# Tooth S (FDI 84): lower right primary first molar

> FDI tooth 84 is the lower right primary first molar (quadrant 8): Universal S, Palmer LRD. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-84  
Last updated: 2026-10-17T11:13:37Z  
German version: https://hajto.de/zahnschema/zahn-84.md

- **FDI (ISO 3950):** 84
- **Universal (ADA):** S
- **Palmer:** D┐ (LRD)
- **Name:** Lower right primary first molar
- **Tooth type:** Primary first molar
- **Group:** Posterior tooth
- **Quadrant:** Quadrant 8: lower right (mandibular right)
- **Dentition:** Primary dentition

## Neighbouring teeth

- [Tooth 83](https://hajto.de/en/tooth-chart/tooth-83.md): lower right primary canine
- [Tooth 85](https://hajto.de/en/tooth-chart/tooth-85.md): lower right primary second molar

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

- [Tooth 54](https://hajto.de/en/tooth-chart/tooth-54.md): upper 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.