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.

Dentin:
The part of the tooth directly under the enamel.

Cementum:
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

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

Interproximal

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

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