# Tooth 11: Upper Left Canine

> 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.

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Last verified: 2026-07-08

Neutral tooth-designation reference only; not clinical, diagnostic, or treatment advice. Root counts describe typical permanent-tooth morphology and vary between individuals.

## Direct answer

- Which tooth is number 11? 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.
- Universal number: 11
- FDI / ISO 3950 designation: 23
- Palmer designation: 3 UL
- Plain-language name: Upper Left Canine
- Anatomical name: Maxillary Left Canine
- Quadrant: Upper Left
- Arch and side: upper, left
- Type: canine
- Typical roots: 1

## Conversion table

| System | Designation |
| --- | --- |
| Universal Numbering System | 11 |
| FDI / ISO 3950 | 23 |
| Palmer notation | 3 UL |
| Tooth name | Upper Left Canine |

## Search terms

- which tooth is number 11?
- tooth 11
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- fdi 23
- palmer 3
- upper left tooth 3
- upper left canine

## Sources

- `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/>

## Related

- [Full tooth numbering chart](https://dentovio.com/tools/tooth-numbering-chart/index.html.md)
- [FDI to Universal converter](https://dentovio.com/tools/fdi-to-universal-converter/index.html.md)
- [Palmer notation converter](https://dentovio.com/tools/palmer-notation-converter/index.html.md)
- [Previous tooth: Tooth 10: Upper Left Lateral Incisor](https://dentovio.com/tools/tooth-numbering-chart/tooth-10/index.html.md)
- [Next tooth: Tooth 12: Upper Left First Premolar](https://dentovio.com/tools/tooth-numbering-chart/tooth-12/index.html.md)