Lower right first molar

Dens molaris

SkeletalSkeletonHeadRight 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 ≈ 11.0 × 10.5 mm, 7.5 mm tall; root ≈ 14 mm
Clinical note
The first molar erupts at about 6 years (the "six-year molar") and is the key to the bite.

Nearby skeletal structures Lower right canine, Lower right first premolar, Lower right lateral incisor, Lower right second molar, Lower right second premolar, Lower right third molar, Upper right first molar, Upper right second molar, Upper right second premolar, Upper right third molar