# Tooth E (FDI 51): upper right primary central incisor

> FDI tooth 51 is the upper right primary central incisor (quadrant 5): Universal E, Palmer URA. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-51  
Last updated: 2026-10-17T11:14:39Z  
German version: https://hajto.de/zahnschema/zahn-51.md

- **FDI (ISO 3950):** 51
- **Universal (ADA):** E
- **Palmer:** A┘ (URA)
- **Name:** Upper right primary central incisor
- **Tooth type:** Primary central incisor
- **Group:** Anterior tooth
- **Quadrant:** Quadrant 5: upper right (maxillary right)
- **Dentition:** Primary dentition

## Neighbouring teeth

- [Tooth 61](https://hajto.de/en/tooth-chart/tooth-61.md): upper left primary central incisor
- [Tooth 52](https://hajto.de/en/tooth-chart/tooth-52.md): upper right primary lateral incisor

## Opposing tooth (same position in the opposite jaw)

- [Tooth 81](https://hajto.de/en/tooth-chart/tooth-81.md): lower right primary central incisor

[Interactive tooth chart](https://hajto.de/en/tooth-chart) · Reference for dentists and dental students. Notation according to the FDI two-digit system (ISO 3950) and the ADA Universal Numbering System.