Figure 11.

Schematic diagram depicting how cementoblasts produce intrinsic fibers around principal fibers on extrinsic fiber-rich CIFC. Cementoblasts surround principal fibers (PF) in cylindrical compartments with wing-like processes. With further cementogenesis, they retract the wing-like processes and divide them into finger-like processes. At the same time they secrete intrinsic fibers (IF) along the finger-like processes. As a result, the intrinsic fibers encircle the extrinsic fibers (EF) in the cementum.

Modified from Yamamoto et al. [54].