# Tooth #18 (FDI 37): lower left second molar

> FDI tooth 37 is the lower left second molar (quadrant 3): Universal #18, Palmer LL7. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-37  
Last updated: 2026-10-17T11:13:37Z  
German version: https://hajto.de/zahnschema/zahn-37.md

- **FDI (ISO 3950):** 37
- **Universal (ADA):** #18
- **Palmer:** ┌7 (LL7)
- **Name:** Lower left second molar
- **Tooth type:** Second molar
- **Group:** Posterior tooth
- **Quadrant:** Quadrant 3: lower left (mandibular left)
- **Dentition:** Permanent dentition

## Neighbouring teeth

- [Tooth 36](https://hajto.de/en/tooth-chart/tooth-36.md): lower left first molar
- [Tooth 38](https://hajto.de/en/tooth-chart/tooth-38.md): lower left third molar (wisdom tooth)

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

- [Tooth 27](https://hajto.de/en/tooth-chart/tooth-27.md): upper left 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.