Lower left second premolar

Dens premolaris

SkeletalSkeletonHeadLeft side

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What it is
Transitional tooth with two cusps (buccal and lingual) on its biting surface and a single root. The crown is covered with enamel, the hardest substance in the body.
Function
Holds and crushes food.
Size
Crown ≈ 7.0 × 8.0 mm, 8.0 mm tall; root ≈ 15 mm
Clinical note
Premolars replace the deciduous molars at 10–12 years.

Nearby skeletal structures Lower left canine, Lower left central incisor, Lower left first molar, Lower left first premolar, Lower left lateral incisor, Lower left second molar, Upper left first molar, Upper left first premolar, Upper left second molar, Upper left second premolar