# Tooth #31 (FDI 47): lower right second molar

> FDI tooth 47 is the lower right second molar (quadrant 4): Universal #31, Palmer LR7. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-47  
Last updated: 2026-10-17T11:13:36Z  
German version: https://hajto.de/zahnschema/zahn-47.md

- **FDI (ISO 3950):** 47
- **Universal (ADA):** #31
- **Palmer:** 7┐ (LR7)
- **Name:** Lower right second molar
- **Tooth type:** Second molar
- **Group:** Posterior tooth
- **Quadrant:** Quadrant 4: lower right (mandibular right)
- **Dentition:** Permanent dentition

## Neighbouring teeth

- [Tooth 46](https://hajto.de/en/tooth-chart/tooth-46.md): lower right first molar
- [Tooth 48](https://hajto.de/en/tooth-chart/tooth-48.md): lower right third molar (wisdom tooth)

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

- [Tooth 17](https://hajto.de/en/tooth-chart/tooth-17.md): upper right second 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.