Lower left second molar

Dens molaris

SkeletalSkeletonHeadLeft side

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What it is
Large grinding tooth with four cusps around a central fossa and two roots (mesial and distal). The crown is covered with enamel, the hardest substance in the body.
Function
Grinds food into a paste during chewing.
Size
Crown ≈ 10.5 × 10.0 mm, 7.0 mm tall; root ≈ 13 mm
Clinical note
The second molar erupts at about 12 years.

Nearby skeletal structures Lower left canine, Lower left first molar, Lower left first premolar, Lower left second premolar, Lower left third molar, Mandible, Upper left first molar, Upper left second molar, Upper left second premolar, Upper left third molar