What are Cementocytes?
Cementocytes are cementoblasts enclosed in a self-generated matrix. Following matrix mineralization, cementoblasts lose their secretory ability and become cementocytes.
What are extrinsic fibers?
Abstract. Acellular extrinsic fiber cementum is a mineralized tissue that covers the cervical half of the tooth root surface. It contains mainly extrinsic or Sharpey’s fibers that run perpendicular to the root surface to anchor the tooth via the periodontal ligament.
What are the physiologic changes in cementum?
Normal physiologic dynamics for cementum is either appositional growth or resorption. Studies have hypothesized that the mechanism for this appositional growth is attributed to mineralization of the organic matter by the cementoblasts in response to mechanical strain along the PDL-cementum interface [7, 52–56].
What do Cementocytes do?
Cementum is a mineralized tissue covering the tooth root that functions in tooth attachment and posteruptive adjustment of tooth position.
How can you tell the difference between hypercementosis and cementoblastoma?
Radiographically, the teeth affected by hypercementosis show thickening of the root, surrounded by radiolucent periodontal ligament space, and intact lamina dura. In turn, cementoblastoma is a calcified mass attached to the dental root, with loss of contour due to root resorption and fusion with tumor.
What are extrinsic and intrinsic fibers of cementum?
1) Cementum contains two types of fibers, i.e. extrinsic (Sharpey’s) fibers which are embedded ends of the principal fibers and intrinsic fibers which are fibers of cementum proper. “Cellular intrinsic fiber cementum (CIFC)” contains intrinsic fibers and cementocytes.
What is primary and secondary cementum?
Primary cementum is frequently the only type of cementum found on the roots of incisors and canines (single-rooted teeth). Secondary cementum is found chiefly in the apical regions of the roots of premolars and molars (multi-rooted teeth).
What is the function of the cementum?
The main function of cementum is tooth support or tooth anchorage together with the principal fibers and alveolar bone.
What is the role of cementum?
The main function of cementum is to provide attachment to the collagen fibres present in the periodontal ligament. This helps maintain the integrity of the root and its position in the gum and bone. Cementum is also deeply involved in the repair and regeneration of teeth.