Basic Terminology

Welcome to the world of dentistry! We're so glad you're here.

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Enamel, Dentin, and Cementum

Enamel: The hard, calcified, mineralized surface of the tooth that covers the crown. The hardest substance in the body.

The part of the tooth directly under the enamel.

The thin, bonelike structure that covers the root of the tooth.

Dentinoenamel Junction  / Cementoenamel Junction

Dentinoenamel Junction (DEJ): The junction of the enamel and dentin.

Cementoenamel Junction (CEJ):
The anatomical location where the enamel and cementum meet.


Apex: The tip end of a root.
The area that surrounds the tip of a tooth.


Interproximal: Referring to the area between two adjacent teeth. The interproximal area is highlighted here in yellow.

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