# Tooth numbering reference Answers Tooth-specific Universal, FDI, and Palmer answers for permanent and primary teeth. Canonical URL: https://dentovio.com/answers/topic/tooth-numbering-reference Markdown mirror: https://dentovio.com/answers/topic/tooth-numbering-reference/index.html.md Answer hub: [Dentovio Public Answers](https://dentovio.com/answers) Answer bank JSON: https://dentovio.com/answer-bank.json AI search manifest: https://dentovio.com/ai-search.json Answer count: 54 Last verified: 2026-07-13 ## Direct answer This topic groups 54 public Dentovio answer intents for tooth numbering reference. Each answer includes a focused answer URL, the canonical source page, query patterns, and source-citation metadata where available. ## Answers in this topic ### FDI to Universal tooth number converter Answer: Use Dentovio's FDI to Universal converter to enter a two-digit FDI / ISO 3950 tooth number and see the matching Universal number, Palmer label, quadrant, dentition, and tooth name. Answer page: [/answers/fdi-to-universal-tooth-number-converter](https://dentovio.com/answers/fdi-to-universal-tooth-number-converter) Answer markdown: [/answers/fdi-to-universal-tooth-number-converter/index.html.md](https://dentovio.com/answers/fdi-to-universal-tooth-number-converter/index.html.md) Source page: [/tools/fdi-to-universal-converter](https://dentovio.com/tools/fdi-to-universal-converter) Source markdown: [/tools/fdi-to-universal-converter/index.html.md](https://dentovio.com/tools/fdi-to-universal-converter/index.html.md) Answer intent ID: `fdi-to-universal-tooth-number-converter` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - FDI to Universal tooth number converter - convert FDI tooth number to Universal - ISO 3950 to Universal tooth converter - what Universal tooth number is FDI 26 - FDI notation converter for teeth Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Palmer notation converter Answer: Use Dentovio's Palmer notation converter to choose the quadrant and position label, then map it to the matching Universal number and FDI / ISO 3950 notation for permanent or primary teeth. Answer page: [/answers/palmer-notation-to-universal-converter](https://dentovio.com/answers/palmer-notation-to-universal-converter) Answer markdown: [/answers/palmer-notation-to-universal-converter/index.html.md](https://dentovio.com/answers/palmer-notation-to-universal-converter/index.html.md) Source page: [/tools/palmer-notation-converter](https://dentovio.com/tools/palmer-notation-converter) Source markdown: [/tools/palmer-notation-converter/index.html.md](https://dentovio.com/tools/palmer-notation-converter/index.html.md) Answer intent ID: `palmer-notation-to-universal-converter` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Palmer notation converter - convert Palmer notation to Universal tooth number - Palmer tooth chart to FDI - what Universal tooth is Palmer upper left 6 - Palmer dental notation converter Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 1? Answer: In the Universal Numbering System, tooth 1 is the upper right third molar (maxillary right third molar). Its FDI (ISO 3950) designation is 18 and its Palmer designation is 8 in the upper right quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-1](https://dentovio.com/answers/tooth-number-1) Answer markdown: [/answers/tooth-number-1/index.html.md](https://dentovio.com/answers/tooth-number-1/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-1](https://dentovio.com/tools/tooth-numbering-chart/tooth-1) Source markdown: [/tools/tooth-numbering-chart/tooth-1/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-1/index.html.md) Answer intent ID: `tooth-number-1` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 1? - Tooth 1: Upper Right Third Molar - Which tooth is 1? - What is tooth number 1 in FDI and Palmer notation? - Which tooth is FDI 18? - What is FDI 18 in Universal numbering? - FDI 18 to Universal tooth number - ISO 3950 tooth 18 - Which tooth is Palmer 8 Upper Right? - Palmer 8 Upper Right to Universal - Upper Right Palmer 8 tooth - UR Palmer 8 permanent tooth - Upper Right Third Molar tooth number - Universal 1 FDI 18 Palmer 8 - which tooth is number 1? - tooth 1 - tooth number 1 - universal tooth 1 - adult tooth 1 - upper right third molar - maxillary right third molar - fdi 18 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 2? Answer: In the Universal Numbering System, tooth 2 is the upper right second molar (maxillary right second molar). Its FDI (ISO 3950) designation is 17 and its Palmer designation is 7 in the upper right quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-2](https://dentovio.com/answers/tooth-number-2) Answer markdown: [/answers/tooth-number-2/index.html.md](https://dentovio.com/answers/tooth-number-2/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-2](https://dentovio.com/tools/tooth-numbering-chart/tooth-2) Source markdown: [/tools/tooth-numbering-chart/tooth-2/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-2/index.html.md) Answer intent ID: `tooth-number-2` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 2? - Tooth 2: Upper Right Second Molar - Which tooth is 2? - What is tooth number 2 in FDI and Palmer notation? - Which tooth is FDI 17? - What is FDI 17 in Universal numbering? - FDI 17 to Universal tooth number - ISO 3950 tooth 17 - Which tooth is Palmer 7 Upper Right? - Palmer 7 Upper Right to Universal - Upper Right Palmer 7 tooth - UR Palmer 7 permanent tooth - Upper Right Second Molar tooth number - Universal 2 FDI 17 Palmer 7 - which tooth is number 2? - tooth 2 - tooth number 2 - universal tooth 2 - adult tooth 2 - upper right second molar - maxillary right second molar - fdi 17 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 3? Answer: In the Universal Numbering System, tooth 3 is the upper right first molar (maxillary right first molar). Its FDI (ISO 3950) designation is 16 and its Palmer designation is 6 in the upper right quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-3](https://dentovio.com/answers/tooth-number-3) Answer markdown: [/answers/tooth-number-3/index.html.md](https://dentovio.com/answers/tooth-number-3/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-3](https://dentovio.com/tools/tooth-numbering-chart/tooth-3) Source markdown: [/tools/tooth-numbering-chart/tooth-3/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-3/index.html.md) Answer intent ID: `tooth-number-3` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 3? - Tooth 3: Upper Right First Molar - Which tooth is 3? - What is tooth number 3 in FDI and Palmer notation? - Which tooth is FDI 16? - What is FDI 16 in Universal numbering? - FDI 16 to Universal tooth number - ISO 3950 tooth 16 - Which tooth is Palmer 6 Upper Right? - Palmer 6 Upper Right to Universal - Upper Right Palmer 6 tooth - UR Palmer 6 permanent tooth - Upper Right First Molar tooth number - Universal 3 FDI 16 Palmer 6 - which tooth is number 3? - tooth 3 - tooth number 3 - universal tooth 3 - adult tooth 3 - upper right first molar - maxillary right first molar - fdi 16 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 4? Answer: In the Universal Numbering System, tooth 4 is the upper right second premolar (maxillary right second premolar). Its FDI (ISO 3950) designation is 15 and its Palmer designation is 5 in the upper right quadrant. It is a premolar in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-4](https://dentovio.com/answers/tooth-number-4) Answer markdown: [/answers/tooth-number-4/index.html.md](https://dentovio.com/answers/tooth-number-4/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-4](https://dentovio.com/tools/tooth-numbering-chart/tooth-4) Source markdown: [/tools/tooth-numbering-chart/tooth-4/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-4/index.html.md) Answer intent ID: `tooth-number-4` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 4? - Tooth 4: Upper Right Second Premolar - Which tooth is 4? - What is tooth number 4 in FDI and Palmer notation? - Which tooth is FDI 15? - What is FDI 15 in Universal numbering? - FDI 15 to Universal tooth number - ISO 3950 tooth 15 - Which tooth is Palmer 5 Upper Right? - Palmer 5 Upper Right to Universal - Upper Right Palmer 5 tooth - UR Palmer 5 permanent tooth - Upper Right Second Premolar tooth number - Universal 4 FDI 15 Palmer 5 - which tooth is number 4? - tooth 4 - tooth number 4 - universal tooth 4 - adult tooth 4 - upper right second premolar - maxillary right second premolar - fdi 15 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 5? Answer: In the Universal Numbering System, tooth 5 is the upper right first premolar (maxillary right first premolar). Its FDI (ISO 3950) designation is 14 and its Palmer designation is 4 in the upper right quadrant. It is a premolar in the upper arch with typically 2 roots. Answer page: [/answers/tooth-number-5](https://dentovio.com/answers/tooth-number-5) Answer markdown: [/answers/tooth-number-5/index.html.md](https://dentovio.com/answers/tooth-number-5/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-5](https://dentovio.com/tools/tooth-numbering-chart/tooth-5) Source markdown: [/tools/tooth-numbering-chart/tooth-5/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-5/index.html.md) Answer intent ID: `tooth-number-5` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 5? - Tooth 5: Upper Right First Premolar - Which tooth is 5? - What is tooth number 5 in FDI and Palmer notation? - Which tooth is FDI 14? - What is FDI 14 in Universal numbering? - FDI 14 to Universal tooth number - ISO 3950 tooth 14 - Which tooth is Palmer 4 Upper Right? - Palmer 4 Upper Right to Universal - Upper Right Palmer 4 tooth - UR Palmer 4 permanent tooth - Upper Right First Premolar tooth number - Universal 5 FDI 14 Palmer 4 - which tooth is number 5? - tooth 5 - tooth number 5 - universal tooth 5 - adult tooth 5 - upper right first premolar - maxillary right first premolar - fdi 14 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 6? Answer: In the Universal Numbering System, tooth 6 is the upper right canine (maxillary right canine). Its FDI (ISO 3950) designation is 13 and its Palmer designation is 3 in the upper right quadrant. It is a canine in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-6](https://dentovio.com/answers/tooth-number-6) Answer markdown: [/answers/tooth-number-6/index.html.md](https://dentovio.com/answers/tooth-number-6/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-6](https://dentovio.com/tools/tooth-numbering-chart/tooth-6) Source markdown: [/tools/tooth-numbering-chart/tooth-6/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-6/index.html.md) Answer intent ID: `tooth-number-6` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 6? - Tooth 6: Upper Right Canine - Which tooth is 6? - What is tooth number 6 in FDI and Palmer notation? - Which tooth is FDI 13? - What is FDI 13 in Universal numbering? - FDI 13 to Universal tooth number - ISO 3950 tooth 13 - Which tooth is Palmer 3 Upper Right? - Palmer 3 Upper Right to Universal - Upper Right Palmer 3 tooth - UR Palmer 3 permanent tooth - Upper Right Canine tooth number - Universal 6 FDI 13 Palmer 3 - which tooth is number 6? - tooth 6 - tooth number 6 - universal tooth 6 - adult tooth 6 - upper right canine - maxillary right canine - fdi 13 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 7? Answer: In the Universal Numbering System, tooth 7 is the upper right lateral incisor (maxillary right lateral incisor). Its FDI (ISO 3950) designation is 12 and its Palmer designation is 2 in the upper right quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-7](https://dentovio.com/answers/tooth-number-7) Answer markdown: [/answers/tooth-number-7/index.html.md](https://dentovio.com/answers/tooth-number-7/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-7](https://dentovio.com/tools/tooth-numbering-chart/tooth-7) Source markdown: [/tools/tooth-numbering-chart/tooth-7/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-7/index.html.md) Answer intent ID: `tooth-number-7` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 7? - Tooth 7: Upper Right Lateral Incisor - Which tooth is 7? - What is tooth number 7 in FDI and Palmer notation? - Which tooth is FDI 12? - What is FDI 12 in Universal numbering? - FDI 12 to Universal tooth number - ISO 3950 tooth 12 - Which tooth is Palmer 2 Upper Right? - Palmer 2 Upper Right to Universal - Upper Right Palmer 2 tooth - UR Palmer 2 permanent tooth - Upper Right Lateral Incisor tooth number - Universal 7 FDI 12 Palmer 2 - which tooth is number 7? - tooth 7 - tooth number 7 - universal tooth 7 - adult tooth 7 - upper right lateral incisor - maxillary right lateral incisor - fdi 12 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 8? Answer: In the Universal Numbering System, tooth 8 is the upper right central incisor (maxillary right central incisor). Its FDI (ISO 3950) designation is 11 and its Palmer designation is 1 in the upper right quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-8](https://dentovio.com/answers/tooth-number-8) Answer markdown: [/answers/tooth-number-8/index.html.md](https://dentovio.com/answers/tooth-number-8/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-8](https://dentovio.com/tools/tooth-numbering-chart/tooth-8) Source markdown: [/tools/tooth-numbering-chart/tooth-8/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-8/index.html.md) Answer intent ID: `tooth-number-8` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 8? - Tooth 8: Upper Right Central Incisor - Which tooth is 8? - What is tooth number 8 in FDI and Palmer notation? - Which tooth is FDI 11? - What is FDI 11 in Universal numbering? - FDI 11 to Universal tooth number - ISO 3950 tooth 11 - Which tooth is Palmer 1 Upper Right? - Palmer 1 Upper Right to Universal - Upper Right Palmer 1 tooth - UR Palmer 1 permanent tooth - Upper Right Central Incisor tooth number - Universal 8 FDI 11 Palmer 1 - which tooth is number 8? - tooth 8 - tooth number 8 - universal tooth 8 - adult tooth 8 - upper right central incisor - maxillary right central incisor - fdi 11 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 9? Answer: In the Universal Numbering System, tooth 9 is the upper left central incisor (maxillary left central incisor). Its FDI (ISO 3950) designation is 21 and its Palmer designation is 1 in the upper left quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-9](https://dentovio.com/answers/tooth-number-9) Answer markdown: [/answers/tooth-number-9/index.html.md](https://dentovio.com/answers/tooth-number-9/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-9](https://dentovio.com/tools/tooth-numbering-chart/tooth-9) Source markdown: [/tools/tooth-numbering-chart/tooth-9/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-9/index.html.md) Answer intent ID: `tooth-number-9` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 9? - Tooth 9: Upper Left Central Incisor - Which tooth is 9? - What is tooth number 9 in FDI and Palmer notation? - Which tooth is FDI 21? - What is FDI 21 in Universal numbering? - FDI 21 to Universal tooth number - ISO 3950 tooth 21 - Which tooth is Palmer 1 Upper Left? - Palmer 1 Upper Left to Universal - Upper Left Palmer 1 tooth - UL Palmer 1 permanent tooth - Upper Left Central Incisor tooth number - Universal 9 FDI 21 Palmer 1 - which tooth is number 9? - tooth 9 - tooth number 9 - universal tooth 9 - adult tooth 9 - upper left central incisor - maxillary left central incisor - fdi 21 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 10? Answer: In the Universal Numbering System, tooth 10 is the upper left lateral incisor (maxillary left lateral incisor). Its FDI (ISO 3950) designation is 22 and its Palmer designation is 2 in the upper left quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-10](https://dentovio.com/answers/tooth-number-10) Answer markdown: [/answers/tooth-number-10/index.html.md](https://dentovio.com/answers/tooth-number-10/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-10](https://dentovio.com/tools/tooth-numbering-chart/tooth-10) Source markdown: [/tools/tooth-numbering-chart/tooth-10/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-10/index.html.md) Answer intent ID: `tooth-number-10` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 10? - Tooth 10: Upper Left Lateral Incisor - Which tooth is 10? - What is tooth number 10 in FDI and Palmer notation? - Which tooth is FDI 22? - What is FDI 22 in Universal numbering? - FDI 22 to Universal tooth number - ISO 3950 tooth 22 - Which tooth is Palmer 2 Upper Left? - Palmer 2 Upper Left to Universal - Upper Left Palmer 2 tooth - UL Palmer 2 permanent tooth - Upper Left Lateral Incisor tooth number - Universal 10 FDI 22 Palmer 2 - which tooth is number 10? - tooth 10 - tooth number 10 - universal tooth 10 - adult tooth 10 - upper left lateral incisor - maxillary left lateral incisor - fdi 22 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 11? Answer: In the Universal Numbering System, tooth 11 is the upper left canine (maxillary left canine). Its FDI (ISO 3950) designation is 23 and its Palmer designation is 3 in the upper left quadrant. It is a canine in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-11](https://dentovio.com/answers/tooth-number-11) Answer markdown: [/answers/tooth-number-11/index.html.md](https://dentovio.com/answers/tooth-number-11/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-11](https://dentovio.com/tools/tooth-numbering-chart/tooth-11) Source markdown: [/tools/tooth-numbering-chart/tooth-11/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-11/index.html.md) Answer intent ID: `tooth-number-11` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 11? - Tooth 11: Upper Left Canine - Which tooth is 11? - What is tooth number 11 in FDI and Palmer notation? - Which tooth is FDI 23? - What is FDI 23 in Universal numbering? - FDI 23 to Universal tooth number - ISO 3950 tooth 23 - Which tooth is Palmer 3 Upper Left? - Palmer 3 Upper Left to Universal - Upper Left Palmer 3 tooth - UL Palmer 3 permanent tooth - Upper Left Canine tooth number - Universal 11 FDI 23 Palmer 3 - which tooth is number 11? - tooth 11 - tooth number 11 - universal tooth 11 - adult tooth 11 - upper left canine - maxillary left canine - fdi 23 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 12? Answer: In the Universal Numbering System, tooth 12 is the upper left first premolar (maxillary left first premolar). Its FDI (ISO 3950) designation is 24 and its Palmer designation is 4 in the upper left quadrant. It is a premolar in the upper arch with typically 2 roots. Answer page: [/answers/tooth-number-12](https://dentovio.com/answers/tooth-number-12) Answer markdown: [/answers/tooth-number-12/index.html.md](https://dentovio.com/answers/tooth-number-12/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-12](https://dentovio.com/tools/tooth-numbering-chart/tooth-12) Source markdown: [/tools/tooth-numbering-chart/tooth-12/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-12/index.html.md) Answer intent ID: `tooth-number-12` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 12? - Tooth 12: Upper Left First Premolar - Which tooth is 12? - What is tooth number 12 in FDI and Palmer notation? - Which tooth is FDI 24? - What is FDI 24 in Universal numbering? - FDI 24 to Universal tooth number - ISO 3950 tooth 24 - Which tooth is Palmer 4 Upper Left? - Palmer 4 Upper Left to Universal - Upper Left Palmer 4 tooth - UL Palmer 4 permanent tooth - Upper Left First Premolar tooth number - Universal 12 FDI 24 Palmer 4 - which tooth is number 12? - tooth 12 - tooth number 12 - universal tooth 12 - adult tooth 12 - upper left first premolar - maxillary left first premolar - fdi 24 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 13? Answer: In the Universal Numbering System, tooth 13 is the upper left second premolar (maxillary left second premolar). Its FDI (ISO 3950) designation is 25 and its Palmer designation is 5 in the upper left quadrant. It is a premolar in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-13](https://dentovio.com/answers/tooth-number-13) Answer markdown: [/answers/tooth-number-13/index.html.md](https://dentovio.com/answers/tooth-number-13/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-13](https://dentovio.com/tools/tooth-numbering-chart/tooth-13) Source markdown: [/tools/tooth-numbering-chart/tooth-13/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-13/index.html.md) Answer intent ID: `tooth-number-13` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 13? - Tooth 13: Upper Left Second Premolar - Which tooth is 13? - What is tooth number 13 in FDI and Palmer notation? - Which tooth is FDI 25? - What is FDI 25 in Universal numbering? - FDI 25 to Universal tooth number - ISO 3950 tooth 25 - Which tooth is Palmer 5 Upper Left? - Palmer 5 Upper Left to Universal - Upper Left Palmer 5 tooth - UL Palmer 5 permanent tooth - Upper Left Second Premolar tooth number - Universal 13 FDI 25 Palmer 5 - which tooth is number 13? - tooth 13 - tooth number 13 - universal tooth 13 - adult tooth 13 - upper left second premolar - maxillary left second premolar - fdi 25 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 14? Answer: In the Universal Numbering System, tooth 14 is the upper left first molar (maxillary left first molar). Its FDI (ISO 3950) designation is 26 and its Palmer designation is 6 in the upper left quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-14](https://dentovio.com/answers/tooth-number-14) Answer markdown: [/answers/tooth-number-14/index.html.md](https://dentovio.com/answers/tooth-number-14/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-14](https://dentovio.com/tools/tooth-numbering-chart/tooth-14) Source markdown: [/tools/tooth-numbering-chart/tooth-14/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-14/index.html.md) Answer intent ID: `tooth-number-14` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 14? - Tooth 14: Upper Left First Molar - Which tooth is 14? - What is tooth number 14 in FDI and Palmer notation? - Which tooth is FDI 26? - What is FDI 26 in Universal numbering? - FDI 26 to Universal tooth number - ISO 3950 tooth 26 - Which tooth is Palmer 6 Upper Left? - Palmer 6 Upper Left to Universal - Upper Left Palmer 6 tooth - UL Palmer 6 permanent tooth - Upper Left First Molar tooth number - Universal 14 FDI 26 Palmer 6 - which tooth is number 14? - tooth 14 - tooth number 14 - universal tooth 14 - adult tooth 14 - upper left first molar - maxillary left first molar - fdi 26 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 15? Answer: In the Universal Numbering System, tooth 15 is the upper left second molar (maxillary left second molar). Its FDI (ISO 3950) designation is 27 and its Palmer designation is 7 in the upper left quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-15](https://dentovio.com/answers/tooth-number-15) Answer markdown: [/answers/tooth-number-15/index.html.md](https://dentovio.com/answers/tooth-number-15/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-15](https://dentovio.com/tools/tooth-numbering-chart/tooth-15) Source markdown: [/tools/tooth-numbering-chart/tooth-15/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-15/index.html.md) Answer intent ID: `tooth-number-15` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 15? - Tooth 15: Upper Left Second Molar - Which tooth is 15? - What is tooth number 15 in FDI and Palmer notation? - Which tooth is FDI 27? - What is FDI 27 in Universal numbering? - FDI 27 to Universal tooth number - ISO 3950 tooth 27 - Which tooth is Palmer 7 Upper Left? - Palmer 7 Upper Left to Universal - Upper Left Palmer 7 tooth - UL Palmer 7 permanent tooth - Upper Left Second Molar tooth number - Universal 15 FDI 27 Palmer 7 - which tooth is number 15? - tooth 15 - tooth number 15 - universal tooth 15 - adult tooth 15 - upper left second molar - maxillary left second molar - fdi 27 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 16? Answer: In the Universal Numbering System, tooth 16 is the upper left third molar (maxillary left third molar). Its FDI (ISO 3950) designation is 28 and its Palmer designation is 8 in the upper left quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-16](https://dentovio.com/answers/tooth-number-16) Answer markdown: [/answers/tooth-number-16/index.html.md](https://dentovio.com/answers/tooth-number-16/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-16](https://dentovio.com/tools/tooth-numbering-chart/tooth-16) Source markdown: [/tools/tooth-numbering-chart/tooth-16/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-16/index.html.md) Answer intent ID: `tooth-number-16` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 16? - Tooth 16: Upper Left Third Molar - Which tooth is 16? - What is tooth number 16 in FDI and Palmer notation? - Which tooth is FDI 28? - What is FDI 28 in Universal numbering? - FDI 28 to Universal tooth number - ISO 3950 tooth 28 - Which tooth is Palmer 8 Upper Left? - Palmer 8 Upper Left to Universal - Upper Left Palmer 8 tooth - UL Palmer 8 permanent tooth - Upper Left Third Molar tooth number - Universal 16 FDI 28 Palmer 8 - which tooth is number 16? - tooth 16 - tooth number 16 - universal tooth 16 - adult tooth 16 - upper left third molar - maxillary left third molar - fdi 28 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 17? Answer: In the Universal Numbering System, tooth 17 is the lower left third molar (mandibular left third molar). Its FDI (ISO 3950) designation is 38 and its Palmer designation is 8 in the lower left quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-17](https://dentovio.com/answers/tooth-number-17) Answer markdown: [/answers/tooth-number-17/index.html.md](https://dentovio.com/answers/tooth-number-17/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-17](https://dentovio.com/tools/tooth-numbering-chart/tooth-17) Source markdown: [/tools/tooth-numbering-chart/tooth-17/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-17/index.html.md) Answer intent ID: `tooth-number-17` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 17? - Tooth 17: Lower Left Third Molar - Which tooth is 17? - What is tooth number 17 in FDI and Palmer notation? - Which tooth is FDI 38? - What is FDI 38 in Universal numbering? - FDI 38 to Universal tooth number - ISO 3950 tooth 38 - Which tooth is Palmer 8 Lower Left? - Palmer 8 Lower Left to Universal - Lower Left Palmer 8 tooth - LL Palmer 8 permanent tooth - Lower Left Third Molar tooth number - Universal 17 FDI 38 Palmer 8 - which tooth is number 17? - tooth 17 - tooth number 17 - universal tooth 17 - adult tooth 17 - lower left third molar - mandibular left third molar - fdi 38 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 18? Answer: In the Universal Numbering System, tooth 18 is the lower left second molar (mandibular left second molar). Its FDI (ISO 3950) designation is 37 and its Palmer designation is 7 in the lower left quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-18](https://dentovio.com/answers/tooth-number-18) Answer markdown: [/answers/tooth-number-18/index.html.md](https://dentovio.com/answers/tooth-number-18/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-18](https://dentovio.com/tools/tooth-numbering-chart/tooth-18) Source markdown: [/tools/tooth-numbering-chart/tooth-18/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-18/index.html.md) Answer intent ID: `tooth-number-18` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 18? - Tooth 18: Lower Left Second Molar - Which tooth is 18? - What is tooth number 18 in FDI and Palmer notation? - Which tooth is FDI 37? - What is FDI 37 in Universal numbering? - FDI 37 to Universal tooth number - ISO 3950 tooth 37 - Which tooth is Palmer 7 Lower Left? - Palmer 7 Lower Left to Universal - Lower Left Palmer 7 tooth - LL Palmer 7 permanent tooth - Lower Left Second Molar tooth number - Universal 18 FDI 37 Palmer 7 - which tooth is number 18? - tooth 18 - tooth number 18 - universal tooth 18 - adult tooth 18 - lower left second molar - mandibular left second molar - fdi 37 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 19? Answer: In the Universal Numbering System, tooth 19 is the lower left first molar (mandibular left first molar). Its FDI (ISO 3950) designation is 36 and its Palmer designation is 6 in the lower left quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-19](https://dentovio.com/answers/tooth-number-19) Answer markdown: [/answers/tooth-number-19/index.html.md](https://dentovio.com/answers/tooth-number-19/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-19](https://dentovio.com/tools/tooth-numbering-chart/tooth-19) Source markdown: [/tools/tooth-numbering-chart/tooth-19/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-19/index.html.md) Answer intent ID: `tooth-number-19` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 19? - Tooth 19: Lower Left First Molar - Which tooth is 19? - What is tooth number 19 in FDI and Palmer notation? - Which tooth is FDI 36? - What is FDI 36 in Universal numbering? - FDI 36 to Universal tooth number - ISO 3950 tooth 36 - Which tooth is Palmer 6 Lower Left? - Palmer 6 Lower Left to Universal - Lower Left Palmer 6 tooth - LL Palmer 6 permanent tooth - Lower Left First Molar tooth number - Universal 19 FDI 36 Palmer 6 - which tooth is number 19? - tooth 19 - tooth number 19 - universal tooth 19 - adult tooth 19 - lower left first molar - mandibular left first molar - fdi 36 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 20? Answer: In the Universal Numbering System, tooth 20 is the lower left second premolar (mandibular left second premolar). Its FDI (ISO 3950) designation is 35 and its Palmer designation is 5 in the lower left quadrant. It is a premolar in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-20](https://dentovio.com/answers/tooth-number-20) Answer markdown: [/answers/tooth-number-20/index.html.md](https://dentovio.com/answers/tooth-number-20/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-20](https://dentovio.com/tools/tooth-numbering-chart/tooth-20) Source markdown: [/tools/tooth-numbering-chart/tooth-20/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-20/index.html.md) Answer intent ID: `tooth-number-20` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 20? - Tooth 20: Lower Left Second Premolar - Which tooth is 20? - What is tooth number 20 in FDI and Palmer notation? - Which tooth is FDI 35? - What is FDI 35 in Universal numbering? - FDI 35 to Universal tooth number - ISO 3950 tooth 35 - Which tooth is Palmer 5 Lower Left? - Palmer 5 Lower Left to Universal - Lower Left Palmer 5 tooth - LL Palmer 5 permanent tooth - Lower Left Second Premolar tooth number - Universal 20 FDI 35 Palmer 5 - which tooth is number 20? - tooth 20 - tooth number 20 - universal tooth 20 - adult tooth 20 - lower left second premolar - mandibular left second premolar - fdi 35 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 21? Answer: In the Universal Numbering System, tooth 21 is the lower left first premolar (mandibular left first premolar). Its FDI (ISO 3950) designation is 34 and its Palmer designation is 4 in the lower left quadrant. It is a premolar in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-21](https://dentovio.com/answers/tooth-number-21) Answer markdown: [/answers/tooth-number-21/index.html.md](https://dentovio.com/answers/tooth-number-21/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-21](https://dentovio.com/tools/tooth-numbering-chart/tooth-21) Source markdown: [/tools/tooth-numbering-chart/tooth-21/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-21/index.html.md) Answer intent ID: `tooth-number-21` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 21? - Tooth 21: Lower Left First Premolar - Which tooth is 21? - What is tooth number 21 in FDI and Palmer notation? - Which tooth is FDI 34? - What is FDI 34 in Universal numbering? - FDI 34 to Universal tooth number - ISO 3950 tooth 34 - Which tooth is Palmer 4 Lower Left? - Palmer 4 Lower Left to Universal - Lower Left Palmer 4 tooth - LL Palmer 4 permanent tooth - Lower Left First Premolar tooth number - Universal 21 FDI 34 Palmer 4 - which tooth is number 21? - tooth 21 - tooth number 21 - universal tooth 21 - adult tooth 21 - lower left first premolar - mandibular left first premolar - fdi 34 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 22? Answer: In the Universal Numbering System, tooth 22 is the lower left canine (mandibular left canine). Its FDI (ISO 3950) designation is 33 and its Palmer designation is 3 in the lower left quadrant. It is a canine in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-22](https://dentovio.com/answers/tooth-number-22) Answer markdown: [/answers/tooth-number-22/index.html.md](https://dentovio.com/answers/tooth-number-22/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-22](https://dentovio.com/tools/tooth-numbering-chart/tooth-22) Source markdown: [/tools/tooth-numbering-chart/tooth-22/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-22/index.html.md) Answer intent ID: `tooth-number-22` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 22? - Tooth 22: Lower Left Canine - Which tooth is 22? - What is tooth number 22 in FDI and Palmer notation? - Which tooth is FDI 33? - What is FDI 33 in Universal numbering? - FDI 33 to Universal tooth number - ISO 3950 tooth 33 - Which tooth is Palmer 3 Lower Left? - Palmer 3 Lower Left to Universal - Lower Left Palmer 3 tooth - LL Palmer 3 permanent tooth - Lower Left Canine tooth number - Universal 22 FDI 33 Palmer 3 - which tooth is number 22? - tooth 22 - tooth number 22 - universal tooth 22 - adult tooth 22 - lower left canine - mandibular left canine - fdi 33 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 23? Answer: In the Universal Numbering System, tooth 23 is the lower left lateral incisor (mandibular left lateral incisor). Its FDI (ISO 3950) designation is 32 and its Palmer designation is 2 in the lower left quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-23](https://dentovio.com/answers/tooth-number-23) Answer markdown: [/answers/tooth-number-23/index.html.md](https://dentovio.com/answers/tooth-number-23/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-23](https://dentovio.com/tools/tooth-numbering-chart/tooth-23) Source markdown: [/tools/tooth-numbering-chart/tooth-23/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-23/index.html.md) Answer intent ID: `tooth-number-23` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 23? - Tooth 23: Lower Left Lateral Incisor - Which tooth is 23? - What is tooth number 23 in FDI and Palmer notation? - Which tooth is FDI 32? - What is FDI 32 in Universal numbering? - FDI 32 to Universal tooth number - ISO 3950 tooth 32 - Which tooth is Palmer 2 Lower Left? - Palmer 2 Lower Left to Universal - Lower Left Palmer 2 tooth - LL Palmer 2 permanent tooth - Lower Left Lateral Incisor tooth number - Universal 23 FDI 32 Palmer 2 - which tooth is number 23? - tooth 23 - tooth number 23 - universal tooth 23 - adult tooth 23 - lower left lateral incisor - mandibular left lateral incisor - fdi 32 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 24? Answer: In the Universal Numbering System, tooth 24 is the lower left central incisor (mandibular left central incisor). Its FDI (ISO 3950) designation is 31 and its Palmer designation is 1 in the lower left quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-24](https://dentovio.com/answers/tooth-number-24) Answer markdown: [/answers/tooth-number-24/index.html.md](https://dentovio.com/answers/tooth-number-24/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-24](https://dentovio.com/tools/tooth-numbering-chart/tooth-24) Source markdown: [/tools/tooth-numbering-chart/tooth-24/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-24/index.html.md) Answer intent ID: `tooth-number-24` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 24? - Tooth 24: Lower Left Central Incisor - Which tooth is 24? - What is tooth number 24 in FDI and Palmer notation? - Which tooth is FDI 31? - What is FDI 31 in Universal numbering? - FDI 31 to Universal tooth number - ISO 3950 tooth 31 - Which tooth is Palmer 1 Lower Left? - Palmer 1 Lower Left to Universal - Lower Left Palmer 1 tooth - LL Palmer 1 permanent tooth - Lower Left Central Incisor tooth number - Universal 24 FDI 31 Palmer 1 - which tooth is number 24? - tooth 24 - tooth number 24 - universal tooth 24 - adult tooth 24 - lower left central incisor - mandibular left central incisor - fdi 31 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 25? Answer: In the Universal Numbering System, tooth 25 is the lower right central incisor (mandibular right central incisor). Its FDI (ISO 3950) designation is 41 and its Palmer designation is 1 in the lower right quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-25](https://dentovio.com/answers/tooth-number-25) Answer markdown: [/answers/tooth-number-25/index.html.md](https://dentovio.com/answers/tooth-number-25/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-25](https://dentovio.com/tools/tooth-numbering-chart/tooth-25) Source markdown: [/tools/tooth-numbering-chart/tooth-25/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-25/index.html.md) Answer intent ID: `tooth-number-25` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 25? - Tooth 25: Lower Right Central Incisor - Which tooth is 25? - What is tooth number 25 in FDI and Palmer notation? - Which tooth is FDI 41? - What is FDI 41 in Universal numbering? - FDI 41 to Universal tooth number - ISO 3950 tooth 41 - Which tooth is Palmer 1 Lower Right? - Palmer 1 Lower Right to Universal - Lower Right Palmer 1 tooth - LR Palmer 1 permanent tooth - Lower Right Central Incisor tooth number - Universal 25 FDI 41 Palmer 1 - which tooth is number 25? - tooth 25 - tooth number 25 - universal tooth 25 - adult tooth 25 - lower right central incisor - mandibular right central incisor - fdi 41 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 26? Answer: In the Universal Numbering System, tooth 26 is the lower right lateral incisor (mandibular right lateral incisor). Its FDI (ISO 3950) designation is 42 and its Palmer designation is 2 in the lower right quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-26](https://dentovio.com/answers/tooth-number-26) Answer markdown: [/answers/tooth-number-26/index.html.md](https://dentovio.com/answers/tooth-number-26/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-26](https://dentovio.com/tools/tooth-numbering-chart/tooth-26) Source markdown: [/tools/tooth-numbering-chart/tooth-26/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-26/index.html.md) Answer intent ID: `tooth-number-26` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 26? - Tooth 26: Lower Right Lateral Incisor - Which tooth is 26? - What is tooth number 26 in FDI and Palmer notation? - Which tooth is FDI 42? - What is FDI 42 in Universal numbering? - FDI 42 to Universal tooth number - ISO 3950 tooth 42 - Which tooth is Palmer 2 Lower Right? - Palmer 2 Lower Right to Universal - Lower Right Palmer 2 tooth - LR Palmer 2 permanent tooth - Lower Right Lateral Incisor tooth number - Universal 26 FDI 42 Palmer 2 - which tooth is number 26? - tooth 26 - tooth number 26 - universal tooth 26 - adult tooth 26 - lower right lateral incisor - mandibular right lateral incisor - fdi 42 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 27? Answer: In the Universal Numbering System, tooth 27 is the lower right canine (mandibular right canine). Its FDI (ISO 3950) designation is 43 and its Palmer designation is 3 in the lower right quadrant. It is a canine in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-27](https://dentovio.com/answers/tooth-number-27) Answer markdown: [/answers/tooth-number-27/index.html.md](https://dentovio.com/answers/tooth-number-27/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-27](https://dentovio.com/tools/tooth-numbering-chart/tooth-27) Source markdown: [/tools/tooth-numbering-chart/tooth-27/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-27/index.html.md) Answer intent ID: `tooth-number-27` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 27? - Tooth 27: Lower Right Canine - Which tooth is 27? - What is tooth number 27 in FDI and Palmer notation? - Which tooth is FDI 43? - What is FDI 43 in Universal numbering? - FDI 43 to Universal tooth number - ISO 3950 tooth 43 - Which tooth is Palmer 3 Lower Right? - Palmer 3 Lower Right to Universal - Lower Right Palmer 3 tooth - LR Palmer 3 permanent tooth - Lower Right Canine tooth number - Universal 27 FDI 43 Palmer 3 - which tooth is number 27? - tooth 27 - tooth number 27 - universal tooth 27 - adult tooth 27 - lower right canine - mandibular right canine - fdi 43 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 28? Answer: In the Universal Numbering System, tooth 28 is the lower right first premolar (mandibular right first premolar). Its FDI (ISO 3950) designation is 44 and its Palmer designation is 4 in the lower right quadrant. It is a premolar in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-28](https://dentovio.com/answers/tooth-number-28) Answer markdown: [/answers/tooth-number-28/index.html.md](https://dentovio.com/answers/tooth-number-28/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-28](https://dentovio.com/tools/tooth-numbering-chart/tooth-28) Source markdown: [/tools/tooth-numbering-chart/tooth-28/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-28/index.html.md) Answer intent ID: `tooth-number-28` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 28? - Tooth 28: Lower Right First Premolar - Which tooth is 28? - What is tooth number 28 in FDI and Palmer notation? - Which tooth is FDI 44? - What is FDI 44 in Universal numbering? - FDI 44 to Universal tooth number - ISO 3950 tooth 44 - Which tooth is Palmer 4 Lower Right? - Palmer 4 Lower Right to Universal - Lower Right Palmer 4 tooth - LR Palmer 4 permanent tooth - Lower Right First Premolar tooth number - Universal 28 FDI 44 Palmer 4 - which tooth is number 28? - tooth 28 - tooth number 28 - universal tooth 28 - adult tooth 28 - lower right first premolar - mandibular right first premolar - fdi 44 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 29? Answer: In the Universal Numbering System, tooth 29 is the lower right second premolar (mandibular right second premolar). Its FDI (ISO 3950) designation is 45 and its Palmer designation is 5 in the lower right quadrant. It is a premolar in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-29](https://dentovio.com/answers/tooth-number-29) Answer markdown: [/answers/tooth-number-29/index.html.md](https://dentovio.com/answers/tooth-number-29/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-29](https://dentovio.com/tools/tooth-numbering-chart/tooth-29) Source markdown: [/tools/tooth-numbering-chart/tooth-29/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-29/index.html.md) Answer intent ID: `tooth-number-29` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 29? - Tooth 29: Lower Right Second Premolar - Which tooth is 29? - What is tooth number 29 in FDI and Palmer notation? - Which tooth is FDI 45? - What is FDI 45 in Universal numbering? - FDI 45 to Universal tooth number - ISO 3950 tooth 45 - Which tooth is Palmer 5 Lower Right? - Palmer 5 Lower Right to Universal - Lower Right Palmer 5 tooth - LR Palmer 5 permanent tooth - Lower Right Second Premolar tooth number - Universal 29 FDI 45 Palmer 5 - which tooth is number 29? - tooth 29 - tooth number 29 - universal tooth 29 - adult tooth 29 - lower right second premolar - mandibular right second premolar - fdi 45 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 30? Answer: In the Universal Numbering System, tooth 30 is the lower right first molar (mandibular right first molar). Its FDI (ISO 3950) designation is 46 and its Palmer designation is 6 in the lower right quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-30](https://dentovio.com/answers/tooth-number-30) Answer markdown: [/answers/tooth-number-30/index.html.md](https://dentovio.com/answers/tooth-number-30/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-30](https://dentovio.com/tools/tooth-numbering-chart/tooth-30) Source markdown: [/tools/tooth-numbering-chart/tooth-30/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-30/index.html.md) Answer intent ID: `tooth-number-30` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 30? - Tooth 30: Lower Right First Molar - Which tooth is 30? - What is tooth number 30 in FDI and Palmer notation? - Which tooth is FDI 46? - What is FDI 46 in Universal numbering? - FDI 46 to Universal tooth number - ISO 3950 tooth 46 - Which tooth is Palmer 6 Lower Right? - Palmer 6 Lower Right to Universal - Lower Right Palmer 6 tooth - LR Palmer 6 permanent tooth - Lower Right First Molar tooth number - Universal 30 FDI 46 Palmer 6 - which tooth is number 30? - tooth 30 - tooth number 30 - universal tooth 30 - adult tooth 30 - lower right first molar - mandibular right first molar - fdi 46 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 31? Answer: In the Universal Numbering System, tooth 31 is the lower right second molar (mandibular right second molar). Its FDI (ISO 3950) designation is 47 and its Palmer designation is 7 in the lower right quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-31](https://dentovio.com/answers/tooth-number-31) Answer markdown: [/answers/tooth-number-31/index.html.md](https://dentovio.com/answers/tooth-number-31/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-31](https://dentovio.com/tools/tooth-numbering-chart/tooth-31) Source markdown: [/tools/tooth-numbering-chart/tooth-31/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-31/index.html.md) Answer intent ID: `tooth-number-31` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 31? - Tooth 31: Lower Right Second Molar - Which tooth is 31? - What is tooth number 31 in FDI and Palmer notation? - Which tooth is FDI 47? - What is FDI 47 in Universal numbering? - FDI 47 to Universal tooth number - ISO 3950 tooth 47 - Which tooth is Palmer 7 Lower Right? - Palmer 7 Lower Right to Universal - Lower Right Palmer 7 tooth - LR Palmer 7 permanent tooth - Lower Right Second Molar tooth number - Universal 31 FDI 47 Palmer 7 - which tooth is number 31? - tooth 31 - tooth number 31 - universal tooth 31 - adult tooth 31 - lower right second molar - mandibular right second molar - fdi 47 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which tooth is number 32? Answer: In the Universal Numbering System, tooth 32 is the lower right third molar (mandibular right third molar). Its FDI (ISO 3950) designation is 48 and its Palmer designation is 8 in the lower right quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-32](https://dentovio.com/answers/tooth-number-32) Answer markdown: [/answers/tooth-number-32/index.html.md](https://dentovio.com/answers/tooth-number-32/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-32](https://dentovio.com/tools/tooth-numbering-chart/tooth-32) Source markdown: [/tools/tooth-numbering-chart/tooth-32/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-32/index.html.md) Answer intent ID: `tooth-number-32` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which tooth is number 32? - Tooth 32: Lower Right Third Molar - Which tooth is 32? - What is tooth number 32 in FDI and Palmer notation? - Which tooth is FDI 48? - What is FDI 48 in Universal numbering? - FDI 48 to Universal tooth number - ISO 3950 tooth 48 - Which tooth is Palmer 8 Lower Right? - Palmer 8 Lower Right to Universal - Lower Right Palmer 8 tooth - LR Palmer 8 permanent tooth - Lower Right Third Molar tooth number - Universal 32 FDI 48 Palmer 8 - which tooth is number 32? - tooth 32 - tooth number 32 - universal tooth 32 - adult tooth 32 - lower right third molar - mandibular right third molar - fdi 48 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter A? Answer: In the Universal Numbering System, primary tooth A is the primary upper right second molar (primary maxillary right second molar). Its FDI (ISO 3950) designation is 55 and its Palmer designation is E in the upper right quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-a](https://dentovio.com/answers/tooth-number-a) Answer markdown: [/answers/tooth-number-a/index.html.md](https://dentovio.com/answers/tooth-number-a/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-a](https://dentovio.com/tools/tooth-numbering-chart/tooth-a) Source markdown: [/tools/tooth-numbering-chart/tooth-a/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-a/index.html.md) Answer intent ID: `tooth-number-a` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter A? - Tooth A: Primary Upper Right Second Molar - Which tooth is A? - What is baby tooth A in FDI and Palmer notation? - Which tooth is FDI 55? - What is FDI 55 in Universal numbering? - FDI 55 to Universal tooth number - ISO 3950 tooth 55 - Which tooth is Palmer E Upper Right? - Palmer E Upper Right to Universal - Upper Right Palmer E tooth - UR Palmer E primary tooth - Primary Upper Right Second Molar tooth number - Universal A FDI 55 Palmer E - which baby tooth is letter a? - tooth A - tooth letter A - baby tooth A - primary tooth A - primary upper right second molar - primary maxillary right second molar - fdi 55 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter B? Answer: In the Universal Numbering System, primary tooth B is the primary upper right first molar (primary maxillary right first molar). Its FDI (ISO 3950) designation is 54 and its Palmer designation is D in the upper right quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-b](https://dentovio.com/answers/tooth-number-b) Answer markdown: [/answers/tooth-number-b/index.html.md](https://dentovio.com/answers/tooth-number-b/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-b](https://dentovio.com/tools/tooth-numbering-chart/tooth-b) Source markdown: [/tools/tooth-numbering-chart/tooth-b/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-b/index.html.md) Answer intent ID: `tooth-number-b` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter B? - Tooth B: Primary Upper Right First Molar - Which tooth is B? - What is baby tooth B in FDI and Palmer notation? - Which tooth is FDI 54? - What is FDI 54 in Universal numbering? - FDI 54 to Universal tooth number - ISO 3950 tooth 54 - Which tooth is Palmer D Upper Right? - Palmer D Upper Right to Universal - Upper Right Palmer D tooth - UR Palmer D primary tooth - Primary Upper Right First Molar tooth number - Universal B FDI 54 Palmer D - which baby tooth is letter b? - tooth B - tooth letter B - baby tooth B - primary tooth B - primary upper right first molar - primary maxillary right first molar - fdi 54 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter C? Answer: In the Universal Numbering System, primary tooth C is the primary upper right canine (primary maxillary right canine). Its FDI (ISO 3950) designation is 53 and its Palmer designation is C in the upper right quadrant. It is a canine in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-c](https://dentovio.com/answers/tooth-number-c) Answer markdown: [/answers/tooth-number-c/index.html.md](https://dentovio.com/answers/tooth-number-c/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-c](https://dentovio.com/tools/tooth-numbering-chart/tooth-c) Source markdown: [/tools/tooth-numbering-chart/tooth-c/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-c/index.html.md) Answer intent ID: `tooth-number-c` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter C? - Tooth C: Primary Upper Right Canine - Which tooth is C? - What is baby tooth C in FDI and Palmer notation? - Which tooth is FDI 53? - What is FDI 53 in Universal numbering? - FDI 53 to Universal tooth number - ISO 3950 tooth 53 - Which tooth is Palmer C Upper Right? - Palmer C Upper Right to Universal - Upper Right Palmer C tooth - UR Palmer C primary tooth - Primary Upper Right Canine tooth number - Universal C FDI 53 Palmer C - which baby tooth is letter c? - tooth C - tooth letter C - baby tooth C - primary tooth C - primary upper right canine - primary maxillary right canine - fdi 53 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter D? Answer: In the Universal Numbering System, primary tooth D is the primary upper right lateral incisor (primary maxillary right lateral incisor). Its FDI (ISO 3950) designation is 52 and its Palmer designation is B in the upper right quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-d](https://dentovio.com/answers/tooth-number-d) Answer markdown: [/answers/tooth-number-d/index.html.md](https://dentovio.com/answers/tooth-number-d/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-d](https://dentovio.com/tools/tooth-numbering-chart/tooth-d) Source markdown: [/tools/tooth-numbering-chart/tooth-d/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-d/index.html.md) Answer intent ID: `tooth-number-d` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter D? - Tooth D: Primary Upper Right Lateral Incisor - Which tooth is D? - What is baby tooth D in FDI and Palmer notation? - Which tooth is FDI 52? - What is FDI 52 in Universal numbering? - FDI 52 to Universal tooth number - ISO 3950 tooth 52 - Which tooth is Palmer B Upper Right? - Palmer B Upper Right to Universal - Upper Right Palmer B tooth - UR Palmer B primary tooth - Primary Upper Right Lateral Incisor tooth number - Universal D FDI 52 Palmer B - which baby tooth is letter d? - tooth D - tooth letter D - baby tooth D - primary tooth D - primary upper right lateral incisor - primary maxillary right lateral incisor - fdi 52 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter E? Answer: In the Universal Numbering System, primary tooth E is the primary upper right central incisor (primary maxillary right central incisor). Its FDI (ISO 3950) designation is 51 and its Palmer designation is A in the upper right quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-e](https://dentovio.com/answers/tooth-number-e) Answer markdown: [/answers/tooth-number-e/index.html.md](https://dentovio.com/answers/tooth-number-e/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-e](https://dentovio.com/tools/tooth-numbering-chart/tooth-e) Source markdown: [/tools/tooth-numbering-chart/tooth-e/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-e/index.html.md) Answer intent ID: `tooth-number-e` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter E? - Tooth E: Primary Upper Right Central Incisor - Which tooth is E? - What is baby tooth E in FDI and Palmer notation? - Which tooth is FDI 51? - What is FDI 51 in Universal numbering? - FDI 51 to Universal tooth number - ISO 3950 tooth 51 - Which tooth is Palmer A Upper Right? - Palmer A Upper Right to Universal - Upper Right Palmer A tooth - UR Palmer A primary tooth - Primary Upper Right Central Incisor tooth number - Universal E FDI 51 Palmer A - which baby tooth is letter e? - tooth E - tooth letter E - baby tooth E - primary tooth E - primary upper right central incisor - primary maxillary right central incisor - fdi 51 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter F? Answer: In the Universal Numbering System, primary tooth F is the primary upper left central incisor (primary maxillary left central incisor). Its FDI (ISO 3950) designation is 61 and its Palmer designation is A in the upper left quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-f](https://dentovio.com/answers/tooth-number-f) Answer markdown: [/answers/tooth-number-f/index.html.md](https://dentovio.com/answers/tooth-number-f/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-f](https://dentovio.com/tools/tooth-numbering-chart/tooth-f) Source markdown: [/tools/tooth-numbering-chart/tooth-f/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-f/index.html.md) Answer intent ID: `tooth-number-f` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter F? - Tooth F: Primary Upper Left Central Incisor - Which tooth is F? - What is baby tooth F in FDI and Palmer notation? - Which tooth is FDI 61? - What is FDI 61 in Universal numbering? - FDI 61 to Universal tooth number - ISO 3950 tooth 61 - Which tooth is Palmer A Upper Left? - Palmer A Upper Left to Universal - Upper Left Palmer A tooth - UL Palmer A primary tooth - Primary Upper Left Central Incisor tooth number - Universal F FDI 61 Palmer A - which baby tooth is letter f? - tooth F - tooth letter F - baby tooth F - primary tooth F - primary upper left central incisor - primary maxillary left central incisor - fdi 61 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter G? Answer: In the Universal Numbering System, primary tooth G is the primary upper left lateral incisor (primary maxillary left lateral incisor). Its FDI (ISO 3950) designation is 62 and its Palmer designation is B in the upper left quadrant. It is a incisor in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-g](https://dentovio.com/answers/tooth-number-g) Answer markdown: [/answers/tooth-number-g/index.html.md](https://dentovio.com/answers/tooth-number-g/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-g](https://dentovio.com/tools/tooth-numbering-chart/tooth-g) Source markdown: [/tools/tooth-numbering-chart/tooth-g/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-g/index.html.md) Answer intent ID: `tooth-number-g` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter G? - Tooth G: Primary Upper Left Lateral Incisor - Which tooth is G? - What is baby tooth G in FDI and Palmer notation? - Which tooth is FDI 62? - What is FDI 62 in Universal numbering? - FDI 62 to Universal tooth number - ISO 3950 tooth 62 - Which tooth is Palmer B Upper Left? - Palmer B Upper Left to Universal - Upper Left Palmer B tooth - UL Palmer B primary tooth - Primary Upper Left Lateral Incisor tooth number - Universal G FDI 62 Palmer B - which baby tooth is letter g? - tooth G - tooth letter G - baby tooth G - primary tooth G - primary upper left lateral incisor - primary maxillary left lateral incisor - fdi 62 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter H? Answer: In the Universal Numbering System, primary tooth H is the primary upper left canine (primary maxillary left canine). Its FDI (ISO 3950) designation is 63 and its Palmer designation is C in the upper left quadrant. It is a canine in the upper arch with typically 1 root. Answer page: [/answers/tooth-number-h](https://dentovio.com/answers/tooth-number-h) Answer markdown: [/answers/tooth-number-h/index.html.md](https://dentovio.com/answers/tooth-number-h/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-h](https://dentovio.com/tools/tooth-numbering-chart/tooth-h) Source markdown: [/tools/tooth-numbering-chart/tooth-h/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-h/index.html.md) Answer intent ID: `tooth-number-h` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter H? - Tooth H: Primary Upper Left Canine - Which tooth is H? - What is baby tooth H in FDI and Palmer notation? - Which tooth is FDI 63? - What is FDI 63 in Universal numbering? - FDI 63 to Universal tooth number - ISO 3950 tooth 63 - Which tooth is Palmer C Upper Left? - Palmer C Upper Left to Universal - Upper Left Palmer C tooth - UL Palmer C primary tooth - Primary Upper Left Canine tooth number - Universal H FDI 63 Palmer C - which baby tooth is letter h? - tooth H - tooth letter H - baby tooth H - primary tooth H - primary upper left canine - primary maxillary left canine - fdi 63 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter I? Answer: In the Universal Numbering System, primary tooth I is the primary upper left first molar (primary maxillary left first molar). Its FDI (ISO 3950) designation is 64 and its Palmer designation is D in the upper left quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-i](https://dentovio.com/answers/tooth-number-i) Answer markdown: [/answers/tooth-number-i/index.html.md](https://dentovio.com/answers/tooth-number-i/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-i](https://dentovio.com/tools/tooth-numbering-chart/tooth-i) Source markdown: [/tools/tooth-numbering-chart/tooth-i/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-i/index.html.md) Answer intent ID: `tooth-number-i` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter I? - Tooth I: Primary Upper Left First Molar - Which tooth is I? - What is baby tooth I in FDI and Palmer notation? - Which tooth is FDI 64? - What is FDI 64 in Universal numbering? - FDI 64 to Universal tooth number - ISO 3950 tooth 64 - Which tooth is Palmer D Upper Left? - Palmer D Upper Left to Universal - Upper Left Palmer D tooth - UL Palmer D primary tooth - Primary Upper Left First Molar tooth number - Universal I FDI 64 Palmer D - which baby tooth is letter i? - tooth I - tooth letter I - baby tooth I - primary tooth I - primary upper left first molar - primary maxillary left first molar - fdi 64 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter J? Answer: In the Universal Numbering System, primary tooth J is the primary upper left second molar (primary maxillary left second molar). Its FDI (ISO 3950) designation is 65 and its Palmer designation is E in the upper left quadrant. It is a molar in the upper arch with typically 3 roots. Answer page: [/answers/tooth-number-j](https://dentovio.com/answers/tooth-number-j) Answer markdown: [/answers/tooth-number-j/index.html.md](https://dentovio.com/answers/tooth-number-j/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-j](https://dentovio.com/tools/tooth-numbering-chart/tooth-j) Source markdown: [/tools/tooth-numbering-chart/tooth-j/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-j/index.html.md) Answer intent ID: `tooth-number-j` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter J? - Tooth J: Primary Upper Left Second Molar - Which tooth is J? - What is baby tooth J in FDI and Palmer notation? - Which tooth is FDI 65? - What is FDI 65 in Universal numbering? - FDI 65 to Universal tooth number - ISO 3950 tooth 65 - Which tooth is Palmer E Upper Left? - Palmer E Upper Left to Universal - Upper Left Palmer E tooth - UL Palmer E primary tooth - Primary Upper Left Second Molar tooth number - Universal J FDI 65 Palmer E - which baby tooth is letter j? - tooth J - tooth letter J - baby tooth J - primary tooth J - primary upper left second molar - primary maxillary left second molar - fdi 65 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter K? Answer: In the Universal Numbering System, primary tooth K is the primary lower left second molar (primary mandibular left second molar). Its FDI (ISO 3950) designation is 75 and its Palmer designation is E in the lower left quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-k](https://dentovio.com/answers/tooth-number-k) Answer markdown: [/answers/tooth-number-k/index.html.md](https://dentovio.com/answers/tooth-number-k/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-k](https://dentovio.com/tools/tooth-numbering-chart/tooth-k) Source markdown: [/tools/tooth-numbering-chart/tooth-k/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-k/index.html.md) Answer intent ID: `tooth-number-k` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter K? - Tooth K: Primary Lower Left Second Molar - Which tooth is K? - What is baby tooth K in FDI and Palmer notation? - Which tooth is FDI 75? - What is FDI 75 in Universal numbering? - FDI 75 to Universal tooth number - ISO 3950 tooth 75 - Which tooth is Palmer E Lower Left? - Palmer E Lower Left to Universal - Lower Left Palmer E tooth - LL Palmer E primary tooth - Primary Lower Left Second Molar tooth number - Universal K FDI 75 Palmer E - which baby tooth is letter k? - tooth K - tooth letter K - baby tooth K - primary tooth K - primary lower left second molar - primary mandibular left second molar - fdi 75 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter L? Answer: In the Universal Numbering System, primary tooth L is the primary lower left first molar (primary mandibular left first molar). Its FDI (ISO 3950) designation is 74 and its Palmer designation is D in the lower left quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-l](https://dentovio.com/answers/tooth-number-l) Answer markdown: [/answers/tooth-number-l/index.html.md](https://dentovio.com/answers/tooth-number-l/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-l](https://dentovio.com/tools/tooth-numbering-chart/tooth-l) Source markdown: [/tools/tooth-numbering-chart/tooth-l/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-l/index.html.md) Answer intent ID: `tooth-number-l` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter L? - Tooth L: Primary Lower Left First Molar - Which tooth is L? - What is baby tooth L in FDI and Palmer notation? - Which tooth is FDI 74? - What is FDI 74 in Universal numbering? - FDI 74 to Universal tooth number - ISO 3950 tooth 74 - Which tooth is Palmer D Lower Left? - Palmer D Lower Left to Universal - Lower Left Palmer D tooth - LL Palmer D primary tooth - Primary Lower Left First Molar tooth number - Universal L FDI 74 Palmer D - which baby tooth is letter l? - tooth L - tooth letter L - baby tooth L - primary tooth L - primary lower left first molar - primary mandibular left first molar - fdi 74 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter M? Answer: In the Universal Numbering System, primary tooth M is the primary lower left canine (primary mandibular left canine). Its FDI (ISO 3950) designation is 73 and its Palmer designation is C in the lower left quadrant. It is a canine in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-m](https://dentovio.com/answers/tooth-number-m) Answer markdown: [/answers/tooth-number-m/index.html.md](https://dentovio.com/answers/tooth-number-m/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-m](https://dentovio.com/tools/tooth-numbering-chart/tooth-m) Source markdown: [/tools/tooth-numbering-chart/tooth-m/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-m/index.html.md) Answer intent ID: `tooth-number-m` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter M? - Tooth M: Primary Lower Left Canine - Which tooth is M? - What is baby tooth M in FDI and Palmer notation? - Which tooth is FDI 73? - What is FDI 73 in Universal numbering? - FDI 73 to Universal tooth number - ISO 3950 tooth 73 - Which tooth is Palmer C Lower Left? - Palmer C Lower Left to Universal - Lower Left Palmer C tooth - LL Palmer C primary tooth - Primary Lower Left Canine tooth number - Universal M FDI 73 Palmer C - which baby tooth is letter m? - tooth M - tooth letter M - baby tooth M - primary tooth M - primary lower left canine - primary mandibular left canine - fdi 73 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter N? Answer: In the Universal Numbering System, primary tooth N is the primary lower left lateral incisor (primary mandibular left lateral incisor). Its FDI (ISO 3950) designation is 72 and its Palmer designation is B in the lower left quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-n](https://dentovio.com/answers/tooth-number-n) Answer markdown: [/answers/tooth-number-n/index.html.md](https://dentovio.com/answers/tooth-number-n/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-n](https://dentovio.com/tools/tooth-numbering-chart/tooth-n) Source markdown: [/tools/tooth-numbering-chart/tooth-n/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-n/index.html.md) Answer intent ID: `tooth-number-n` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter N? - Tooth N: Primary Lower Left Lateral Incisor - Which tooth is N? - What is baby tooth N in FDI and Palmer notation? - Which tooth is FDI 72? - What is FDI 72 in Universal numbering? - FDI 72 to Universal tooth number - ISO 3950 tooth 72 - Which tooth is Palmer B Lower Left? - Palmer B Lower Left to Universal - Lower Left Palmer B tooth - LL Palmer B primary tooth - Primary Lower Left Lateral Incisor tooth number - Universal N FDI 72 Palmer B - which baby tooth is letter n? - tooth N - tooth letter N - baby tooth N - primary tooth N - primary lower left lateral incisor - primary mandibular left lateral incisor - fdi 72 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter O? Answer: In the Universal Numbering System, primary tooth O is the primary lower left central incisor (primary mandibular left central incisor). Its FDI (ISO 3950) designation is 71 and its Palmer designation is A in the lower left quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-o](https://dentovio.com/answers/tooth-number-o) Answer markdown: [/answers/tooth-number-o/index.html.md](https://dentovio.com/answers/tooth-number-o/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-o](https://dentovio.com/tools/tooth-numbering-chart/tooth-o) Source markdown: [/tools/tooth-numbering-chart/tooth-o/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-o/index.html.md) Answer intent ID: `tooth-number-o` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter O? - Tooth O: Primary Lower Left Central Incisor - Which tooth is O? - What is baby tooth O in FDI and Palmer notation? - Which tooth is FDI 71? - What is FDI 71 in Universal numbering? - FDI 71 to Universal tooth number - ISO 3950 tooth 71 - Which tooth is Palmer A Lower Left? - Palmer A Lower Left to Universal - Lower Left Palmer A tooth - LL Palmer A primary tooth - Primary Lower Left Central Incisor tooth number - Universal O FDI 71 Palmer A - which baby tooth is letter o? - tooth O - tooth letter O - baby tooth O - primary tooth O - primary lower left central incisor - primary mandibular left central incisor - fdi 71 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter P? Answer: In the Universal Numbering System, primary tooth P is the primary lower right central incisor (primary mandibular right central incisor). Its FDI (ISO 3950) designation is 81 and its Palmer designation is A in the lower right quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-p](https://dentovio.com/answers/tooth-number-p) Answer markdown: [/answers/tooth-number-p/index.html.md](https://dentovio.com/answers/tooth-number-p/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-p](https://dentovio.com/tools/tooth-numbering-chart/tooth-p) Source markdown: [/tools/tooth-numbering-chart/tooth-p/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-p/index.html.md) Answer intent ID: `tooth-number-p` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter P? - Tooth P: Primary Lower Right Central Incisor - Which tooth is P? - What is baby tooth P in FDI and Palmer notation? - Which tooth is FDI 81? - What is FDI 81 in Universal numbering? - FDI 81 to Universal tooth number - ISO 3950 tooth 81 - Which tooth is Palmer A Lower Right? - Palmer A Lower Right to Universal - Lower Right Palmer A tooth - LR Palmer A primary tooth - Primary Lower Right Central Incisor tooth number - Universal P FDI 81 Palmer A - which baby tooth is letter p? - tooth P - tooth letter P - baby tooth P - primary tooth P - primary lower right central incisor - primary mandibular right central incisor - fdi 81 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter Q? Answer: In the Universal Numbering System, primary tooth Q is the primary lower right lateral incisor (primary mandibular right lateral incisor). Its FDI (ISO 3950) designation is 82 and its Palmer designation is B in the lower right quadrant. It is a incisor in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-q](https://dentovio.com/answers/tooth-number-q) Answer markdown: [/answers/tooth-number-q/index.html.md](https://dentovio.com/answers/tooth-number-q/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-q](https://dentovio.com/tools/tooth-numbering-chart/tooth-q) Source markdown: [/tools/tooth-numbering-chart/tooth-q/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-q/index.html.md) Answer intent ID: `tooth-number-q` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter Q? - Tooth Q: Primary Lower Right Lateral Incisor - Which tooth is Q? - What is baby tooth Q in FDI and Palmer notation? - Which tooth is FDI 82? - What is FDI 82 in Universal numbering? - FDI 82 to Universal tooth number - ISO 3950 tooth 82 - Which tooth is Palmer B Lower Right? - Palmer B Lower Right to Universal - Lower Right Palmer B tooth - LR Palmer B primary tooth - Primary Lower Right Lateral Incisor tooth number - Universal Q FDI 82 Palmer B - which baby tooth is letter q? - tooth Q - tooth letter Q - baby tooth Q - primary tooth Q - primary lower right lateral incisor - primary mandibular right lateral incisor - fdi 82 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter R? Answer: In the Universal Numbering System, primary tooth R is the primary lower right canine (primary mandibular right canine). Its FDI (ISO 3950) designation is 83 and its Palmer designation is C in the lower right quadrant. It is a canine in the lower arch with typically 1 root. Answer page: [/answers/tooth-number-r](https://dentovio.com/answers/tooth-number-r) Answer markdown: [/answers/tooth-number-r/index.html.md](https://dentovio.com/answers/tooth-number-r/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-r](https://dentovio.com/tools/tooth-numbering-chart/tooth-r) Source markdown: [/tools/tooth-numbering-chart/tooth-r/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-r/index.html.md) Answer intent ID: `tooth-number-r` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter R? - Tooth R: Primary Lower Right Canine - Which tooth is R? - What is baby tooth R in FDI and Palmer notation? - Which tooth is FDI 83? - What is FDI 83 in Universal numbering? - FDI 83 to Universal tooth number - ISO 3950 tooth 83 - Which tooth is Palmer C Lower Right? - Palmer C Lower Right to Universal - Lower Right Palmer C tooth - LR Palmer C primary tooth - Primary Lower Right Canine tooth number - Universal R FDI 83 Palmer C - which baby tooth is letter r? - tooth R - tooth letter R - baby tooth R - primary tooth R - primary lower right canine - primary mandibular right canine - fdi 83 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter S? Answer: In the Universal Numbering System, primary tooth S is the primary lower right first molar (primary mandibular right first molar). Its FDI (ISO 3950) designation is 84 and its Palmer designation is D in the lower right quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-s](https://dentovio.com/answers/tooth-number-s) Answer markdown: [/answers/tooth-number-s/index.html.md](https://dentovio.com/answers/tooth-number-s/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-s](https://dentovio.com/tools/tooth-numbering-chart/tooth-s) Source markdown: [/tools/tooth-numbering-chart/tooth-s/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-s/index.html.md) Answer intent ID: `tooth-number-s` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter S? - Tooth S: Primary Lower Right First Molar - Which tooth is S? - What is baby tooth S in FDI and Palmer notation? - Which tooth is FDI 84? - What is FDI 84 in Universal numbering? - FDI 84 to Universal tooth number - ISO 3950 tooth 84 - Which tooth is Palmer D Lower Right? - Palmer D Lower Right to Universal - Lower Right Palmer D tooth - LR Palmer D primary tooth - Primary Lower Right First Molar tooth number - Universal S FDI 84 Palmer D - which baby tooth is letter s? - tooth S - tooth letter S - baby tooth S - primary tooth S - primary lower right first molar - primary mandibular right first molar - fdi 84 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ### Which baby tooth is letter T? Answer: In the Universal Numbering System, primary tooth T is the primary lower right second molar (primary mandibular right second molar). Its FDI (ISO 3950) designation is 85 and its Palmer designation is E in the lower right quadrant. It is a molar in the lower arch with typically 2 roots. Answer page: [/answers/tooth-number-t](https://dentovio.com/answers/tooth-number-t) Answer markdown: [/answers/tooth-number-t/index.html.md](https://dentovio.com/answers/tooth-number-t/index.html.md) Source page: [/tools/tooth-numbering-chart/tooth-t](https://dentovio.com/tools/tooth-numbering-chart/tooth-t) Source markdown: [/tools/tooth-numbering-chart/tooth-t/index.html.md](https://dentovio.com/tools/tooth-numbering-chart/tooth-t/index.html.md) Answer intent ID: `tooth-number-t` Last verified: 2026-07-08 Reviewer: see source page Query patterns: - Which baby tooth is letter T? - Tooth T: Primary Lower Right Second Molar - Which tooth is T? - What is baby tooth T in FDI and Palmer notation? - Which tooth is FDI 85? - What is FDI 85 in Universal numbering? - FDI 85 to Universal tooth number - ISO 3950 tooth 85 - Which tooth is Palmer E Lower Right? - Palmer E Lower Right to Universal - Lower Right Palmer E tooth - LR Palmer E primary tooth - Primary Lower Right Second Molar tooth number - Universal T FDI 85 Palmer E - which baby tooth is letter t? - tooth T - tooth letter T - baby tooth T - primary tooth T - primary lower right second molar - primary mandibular right second molar - fdi 85 Source citations: - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ## Topic source citations - `TOOTH-1` American Dental Association — Universal Numbering System. - `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). - `TOOTH-3` FDI World Dental Federation — two-digit notation. ## Publication boundary This answer bank covers public Dentovio surfaces only. It excludes paid lessons, question banks, scenario drills, timed exams, and user-account content. It is not legal, clinical, financial, coding, coverage, board, or testing-vendor advice. Each answer points to a canonical destination page. Use the destination page's visible source notes, reviewer signal, last-verified date, and disclaimer as the authority for page-specific claims.