Anatomy of the Teeth

A basic understanding of dental anatomy is important in understanding dental disease. Iab.!e,..23.4.:.1 lists commonly used dental nomenclature. A tooth consists largely of dentin, which surrounds the pulp, or neurovascular supply of the tooth ( Fig 234:3). Dentin is a homogeneous material produced by pulpal odontoblasts throughout life. It is deposited as a system of microtubules filled with odontoblastic processes and extracellular fluid. Ihe crown, or portion of the tooth that is visible, consists of a thick enamel layer overlying the dentin. Enamel, the hardest substance in the human body, consists largely of hydroxyapatite and is produced by ameloblasts prior to eruption of the tooth into the mouth. Ihe root portion of the tooth extends into the alveolar bone and is covered with a thin layer of cementum.

TABLE 234-1 Commonly Used Dental Terminology frvirwl frvirwl

FIG. 234-3. The dental anatomic unit and attachment apparatus.
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