Tooth 28 (FDI): maxillary left third molar
Quick answer
- Tooth 28 in FDI is Universal 16 and Palmer UL8: the maxillary left third molar.
The three numbers
| System | Number |
|---|---|
| FDI | 28 |
| Universal | 16 |
| Palmer | UL8 |
Careful with plain numbers: Universal 28 is a different tooth, the mandibular right first premolar (FDI 44).
About this tooth
- Name
- Maxillary left third molar
- Set
- Adult (permanent)
- Position
- Upper arch, patient left (upper left, quadrant 2)
- Erupts
- 17 to 21 years
- Roots
- 3
- Root canals
- 3 or more
- Crown surfaces
- Mesial, distal, buccal, palatal (lingual) and occlusal.
- Also written
- #16 (Universal), 2.8 (FDI with a dot), upper left 8, wisdom tooth
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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