Tooth 15 (FDI): maxillary right second premolar
Quick answer
- Tooth 15 in FDI is Universal 4 and Palmer UR5: the maxillary right second premolar.
The three numbers
| System | Number |
|---|---|
| FDI | 15 |
| Universal | 4 |
| Palmer | UR5 |
Careful with plain numbers: Universal 15 is a different tooth, the maxillary left second molar (FDI 27).
About this tooth
- Name
- Maxillary right second premolar
- Set
- Adult (permanent)
- Position
- Upper arch, patient right (upper right, quadrant 1)
- Erupts
- 10 to 12 years
- Roots
- 1
- Root canals
- 1 or 2
- Crown surfaces
- Mesial, distal, buccal, palatal (lingual) and occlusal.
- Also written
- #4 (Universal), 1.5 (FDI with a dot), upper right 5, second bicuspid
Read on 23 October 2026. Sources: American Dental Association, Tooth development charts (primary and permanent); Number of roots and canals, from Ingle's Endodontics; Dental anatomy, citing Ash and Nelson, Wheeler's Dental Anatomy, Physiology and Occlusion. Ages and counts are usual figures, and teeth vary from person to person.
On the chart
Teeth next to it
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