- cementum
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- afibrillar c. c. which, with the electron microscope, appears as laminated, electron-dense reticular material that sometimes overlies the enamel of the tooth.- primary c. c. that has no cementocytes; may cover the entire root of the tooth, but often is missing on the apical third of the root.
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ce·men·tum si-'ment-əm n a specialized external bony layer covering the dentin of the part of a tooth normally within the gum called also cement compare DENTIN, ENAMEL* * *
(cement)n.a thin layer of hard tissue on the surface of the root of a tooth. It attaches the fibres of the periodontal membrane to the tooth.* * *
ce·men·tum (sə-menґtəm) [L. caementum rough stone] [TA] the bonelike, rigid connective tissue covering the root of a tooth from the cementoenamel junction to the apex and lining the apex of the root canal; it also serves as an attachment structure for the periodontal ligament, thus assisting in tooth support. Called also substantia ossea dentis.Cementum covering the anatomical root, thickening toward the apical region, in a ground longitudinal section of a tooth. The dental pulp has been lost in preparation.
Medical dictionary. 2011.