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Sharpey's Fibers of Cementum

Collagen fibers produced by cementoblasts are intrinsic fibers of cementum and are confined to that layer. Collagen fibers formed by fibroblasts of the PDL (E) forming the principal fiber bundles, are partly incorporated into the cementum (A). They are referred to as extrinsic or Sharpey's fibers (F). Note that the terminology corresponds to that used in bone tissue. Trace the collagen fibers of the PDL (following F) into the cementum. Identify the remaining features indicated.


Legend

A - primary cementum
B - dentin
C
- resting line

D - periodontal region
E - intrinsic collagen fibers
F - Sharpey's fibers

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