# Tooth P (FDI 81): lower right primary central incisor

> FDI tooth 81 is the lower right primary central incisor (quadrant 8): Universal P, Palmer LRA. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-81  
Last updated: 2026-10-17T11:14:39Z  
German version: https://hajto.de/zahnschema/zahn-81.md

- **FDI (ISO 3950):** 81
- **Universal (ADA):** P
- **Palmer:** A┐ (LRA)
- **Name:** Lower right primary central incisor
- **Tooth type:** Primary central incisor
- **Group:** Anterior tooth
- **Quadrant:** Quadrant 8: lower right (mandibular right)
- **Dentition:** Primary dentition

## Neighbouring teeth

- [Tooth 71](https://hajto.de/en/tooth-chart/tooth-71.md): lower left primary central incisor
- [Tooth 82](https://hajto.de/en/tooth-chart/tooth-82.md): lower right primary lateral incisor

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

- [Tooth 51](https://hajto.de/en/tooth-chart/tooth-51.md): upper 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.