ANATOMY

Detailed explanation-1: -The cells that form cementum are called cementoblasts. The two main types of cementum are cellular and acellular. The cementum attached to the root dentin and covering the upper (cervical) portion of the root is acellular and thus is called acellular, or primary, cementum.

Detailed explanation-2: -A cementoblast is a biological cell that forms from the follicular cells around the root of a tooth, and whose biological function is cementogenesis, which is the formation of cementum (hard tissue that covers the tooth root).

Detailed explanation-3: -Cementocytes are cementoblasts enclosed in a self-generated matrix. Cementoblast is a cell that originates from follicular cells around the root of the tooth, and its function is cementogenesis. Cementocytes reside in a mineralized extracellular matrix of the cellular cementum.

Detailed explanation-4: -The development of acellular cementum seems to be associated with secretion of enamel-related proteins by cells of the epithelial root sheath. Formation of the matrix for cellular cementum appears to be induced by exposure of the inner layer of the epithelial root sheath to the mesenchymal cells in the dental follicle.

Detailed explanation-5: -Cementoblasts are of mesenchymal origin in the tooth germ. As with bone, cementogenesis starts with the deposition of an irregular collagenous matrix with an interfibrillar matrix, termed cementoid.