# Tooth B (FDI 54): upper right primary first molar

> FDI tooth 54 is the upper right primary first molar (quadrant 5): Universal B, Palmer URD. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-54  
Last updated: 2026-10-17T11:14:40Z  
German version: https://hajto.de/zahnschema/zahn-54.md

- **FDI (ISO 3950):** 54
- **Universal (ADA):** B
- **Palmer:** D┘ (URD)
- **Name:** Upper right primary first molar
- **Tooth type:** Primary first molar
- **Group:** Posterior tooth
- **Quadrant:** Quadrant 5: upper right (maxillary right)
- **Dentition:** Primary dentition

## Neighbouring teeth

- [Tooth 53](https://hajto.de/en/tooth-chart/tooth-53.md): upper right primary canine
- [Tooth 55](https://hajto.de/en/tooth-chart/tooth-55.md): upper right primary second molar

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

- [Tooth 84](https://hajto.de/en/tooth-chart/tooth-84.md): lower right primary first molar

[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.