cementum

cementum /ce·men·tum/ (sĕ-men´tum) the bonelike connective tissue covering the root of a tooth and assisting in tooth support.

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ce·men·tum (s-mntm)

n.

A bonelike substance covering the root of a tooth. Also called cement.

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cementum

[simen′təm]

the bonelike connective tissue that covers the roots of the teeth and helps to support them by providing a place of attachment for the periodontal ligament fibers and overlying dentin.

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cementum (smen´tum),

n a specialized, calcified connective tissue that covers the anatomic root of a tooth, giving attachment to the periodontal ligament.

Cementum.

cementum, abnormalities of,

n.pl includes the reversal lines in the cementum, which represent bone tissue resorption or cementum resorption. Cementicles are calcified epithelial cells found in older persons. Hypercementosis is cementum overgrowth on the roots. See also reversal lines, cementicle, and hypercementosis.

cementum, acellular,

n the cementum that contains no cementocytes.

cementum, cellular,

n the portion of the calcified substance covering the root surfaces of the teeth. It is bonelike and contains cementocytes embedded within lacunae, with protoplasmic processes of the cementocytes coursing through canaliculi that anastomose with canaliculi of adjacent lacunae. The lacunae are dispersed through a calcified matrix arranged in lamellar form. It is localized primarily at the apical portion of the root but may deposit over the acellular cementum or serve to repair areas of cemental resorption.

cementum, collagen fibrils of,

n the fibrils that penetrate the cementum surface and are continuous with the periodontal fibers necessary for tooth support.

cementum, lamellar,

n the cementum in which layers of appositional cementum are arranged in a sheaflike pattern, the layers of cementum being more or less parallel to the cemental surface and demarcated by incremental lines that represent periods of inactivity of cementum formation.

cementum, necrotic,

n nonvital cementum that is situated coronal to the bottom of the periodontal pocket.

cementum, properties of,

n.pl the calcified, avascular connective tissue that is derived from the dental sac and functions in protecting the roots of teeth.

cementum, secondary,

n the term used to describe all subsequent layers of cementum formed after the primary layer. It may be cellular or acellular.

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cementum

the bonelike connective tissue covering the root of a tooth and assisting in tooth support.