Upper left first premolar
Dens premolaris
SkeletalSkeletonHeadLeft side
- What it is
- Transitional tooth with two cusps (buccal and lingual) on its biting surface and usually two roots. The crown is covered with enamel, the hardest substance in the body.
- Function
- Holds and crushes food.
- Size
- Crown ≈ 7.0 × 9.0 mm, 8.5 mm tall; root ≈ 14 mm
- Clinical note
- First premolars are the teeth most often extracted to make space in orthodontics.