Figure 8.

Schematic diagram depicting the formation of extrinsic fiber-free CIFC as the initial CMSC genesis. Section 1: Cementoblasts appear and produce the cementum matrix rapidly in a multipolar mode on the unmineralized dentin. Section 2: Dentin mineralization reaches the cementum matrix and progresses into it. Cementoblasts produce cementum matrix slowly in a unipolar mode. Unmineralized cementum matrix is recognized as precementum. CB/m, cementoblasts with multipolar matrix production; CB/u, cementoblasts with unipolar matrix production; CM, cementum matrix; ERM, epithelial cell rests of Malassez; HERS, Hertwig's epithelial root sheath; MCM, mineralized cementum matrix; MD, mineralized dentin; UMD, unmineralized dentin; PC, precementum.

Modified from Schroeder [4].