Читать книгу Periodontics - Fernando Suarez - Страница 105

Cementicles are defined as calcified spherical bodies (0.2 to 0.3 mm) composed of cementum lying free within the periodontal ligament, attached to the cementum, or embedded within it.^1,3–6 It has been suggested that their formation is influenced by epithelial rest cells of HERS and only present on a tooth surface covered with cementum.^3,5 True cementicles consists of a collagenous matrix intermixed with a noncollagenous ground substance.⁶

Cementicles may enlarge by deposits of calcium salts from the connective tissue. These salts fuse with adjacent free cementicles and become embedded in the root surface during cementum deposition.^164,165 According to Holton et al, cementicles are often observed in canines and molars with an overall prevalence of 34%.¹⁶⁶

The presence of cementicles has not been correlated with the pathogenesis of periodontal disease; however, root surfaces with cementicles might hinder mechanical instrumentation.