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Intermediate Plexus of Collagen Fibers in the PDL

Dentin (A) occupies the extreme right of the field. Note the collagen (Sharpey's) fibers anchored in the cementum (B). Intermediate between the bone and the cementum in actively erupting teeth (or orthodontic movements) the fibers of the periodontal ligament form a plexus of intermingling fibers (C). This plexus is called the intermediate plexus.


A - dentin
B - Sharpey's fibers

C - intermediate plexus

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