# Tooth #28 (FDI 44): lower right first premolar

> FDI tooth 44 is the lower right first premolar (quadrant 4): Universal #28, Palmer LR4. With neighbouring teeth and the full chart.

Source: https://hajto.de/en/tooth-chart/tooth-44  
Last updated: 2026-10-17T11:14:27Z  
German version: https://hajto.de/zahnschema/zahn-44.md

- **FDI (ISO 3950):** 44
- **Universal (ADA):** #28
- **Palmer:** 4┐ (LR4)
- **Name:** Lower right first premolar
- **Tooth type:** First premolar
- **Group:** Posterior tooth
- **Quadrant:** Quadrant 4: lower right (mandibular right)
- **Dentition:** Permanent dentition

## Neighbouring teeth

- [Tooth 43](https://hajto.de/en/tooth-chart/tooth-43.md): lower right canine
- [Tooth 45](https://hajto.de/en/tooth-chart/tooth-45.md): lower right second premolar

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

- [Tooth 14](https://hajto.de/en/tooth-chart/tooth-14.md): upper right first premolar

[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.