A HISTOPATHOLOGICAL STUDY OF NECK LESIONS IN FELINE TEETH

Subgingival resorptive lesions in feline teeth were examined with ligh t microscopy and contact microradiography and nondecalcified ground se ctions of intact mandibular feline teeth. Further study with light mic roscopy on decalcified celloidin specimens revealed histopathological details in the resorptive lesions. Data indicates the lesions originat ed from subgingival sites of the buccal side with a sma# lesion on the surface and an extensive resorption within the tooth. Resorptive lesi ons were induced by granulation tissue. Numerous odontoclasts in the g ranulation tissues were arranged regularly along the edge of resorptiv e lesions of the decalcified celloidin sections. Compared to the vicin ity of the alveolar bone, resorptive lesions were more extensive and o f a higher severity in the cervix of affected teeth. In the nondecalci fied ground sections, contact microradiogram revealed decalcification was not present in the dentine, suggesting the resorptive lesions were not derived from dental caries.