Scanning electron microscopy of the dog periodontium

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Abstract
The periodc‐ntium of premolar teeth of dogs has been examined by scanning electron microscopy. lighl microscopy and microradiography. Scanning electron microscopy reveals a highly developed plexus of indifferent fibers associated with the principal fibers, The indifferent fiber plexus may be important in accomodalion of the periodontal ligament to tooth movement through anastomotie relationships between the plexus and principal fibers. Principal fibers perforate alveolar bone as compact bundles of smaller fibers. Perforating fibers of cementum enter calcified matrix as coiled or straight fibers. The number of coiled fibers is greatest in acellular cementum and the straight fibers are largest in diameter at root apices.

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