PDF: CEMENTAL TEAR: a case report with nonsurgical periodontal therapy

Cementum is a dental hard tissue that acts functionally in the insertion apparatus embedding the collagen fibers of periodontal ligament to the root surface.

cemental-tear


Cementum is a nonuniform, mineralized connective tissue composed by 50% of inorganic matrix in the form of hydroxyapatite crystals. Organic matrix consists of type I collagen fibrils (approximately 90%) and type III collagen fibrils (approximately 5%). 

► Read also: PDF: Effects of Nonsurgical Periodontal Treatment on the Alveolar Bone Density

Dental cementum also contains noncollagenous proteins, glycolipids, glycoproteins and proteoglycans. As an avascular tissue it does not undergo continuous remodeling.

The cementum-dentin junction is characterized by penetrating cytoplasmic processes of pre-cementoblasts in the array of pre-dentin with subsequent deposition of collagen fibers, forming interdigitations.

Cemental tear has been described as an rare periodontal condition characterized by a total or partial separation of the cementum. 

This detachment mainly occurs in the cementum-dentin junction, and may also include dentin . According to the current classification of periodontal diseases, cemental tears are categorized as localized tooth-related factors that modify or predispose to plaque-induced gingival diseases and periodontitis.




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