# 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.

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Answer intent ID: `tooth-number-10`
Cluster: Tooth numbering reference
Last verified: 2026-07-08
Reviewer: see source page

## Direct 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.

## 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. <https://www.ada.org/publications/ada-news/2020/november/how-to-count-teeth-numbering-systems>
- `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). <https://www.iso.org/standard/68292.html>
- `TOOTH-3` FDI World Dental Federation — two-digit notation. <https://www.fdiworlddental.org/>

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## Supporting public URLs

- [/tools/tooth-numbering-chart](https://dentovio.com/tools/tooth-numbering-chart)
- [/tools/fdi-to-universal-converter](https://dentovio.com/tools/fdi-to-universal-converter)
- [/tools/palmer-notation-converter](https://dentovio.com/tools/palmer-notation-converter)
- [/tools/tooth-numbering-chart/tooth-10](https://dentovio.com/tools/tooth-numbering-chart/tooth-10)

## Related answers

- [FDI to Universal tooth number converter](https://dentovio.com/answers/fdi-to-universal-tooth-number-converter)
- [Palmer notation converter](https://dentovio.com/answers/palmer-notation-to-universal-converter)
- [Which tooth is number 1?](https://dentovio.com/answers/tooth-number-1)
- [Which tooth is number 2?](https://dentovio.com/answers/tooth-number-2)