Mandibular Internal Dental Fistula in a Dog with Odontoclastic Resorptive Lesions Complicated by Deformed Teeth

KOBE Yoshiaki, WATANABE Kazuhiro, TAKAGI Mitsuru, MURAKAMI Mami, MASEGI Toshiaki, YAMAZOE  Kazuaki

doi:10.12935/jvma.62.229

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奇形歯に破歯細胞性吸収病巣が併発した下顎内歯瘻の犬の1例
キケイシニハシサイボウセイキュウシュウビョウソウガヘイハツシタカガクナイシロウノイヌノ 1レイ

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Abstract

The authors found an ulcer of the oral mucosa, resorption of the dentin and an abnormal groove in the enamel on the first molar of the left mandibular in a three-year-old miniature dachshund. A radiographic examination of the first molar revealed that the periapical alveolar bone and the cervical dentin on the mesial root was resorbed. A convergence of the roots was also identified. The ulcer was thus an internal dental fistula that had advanced from the periapical abscess and arose with the resorption of dentin or an accessory canal in the deformed teeth. At the owner's request, root canal therapy was used to conserve the teeth. After the treatment, the ulcer and alveolar bone resorptive image disappeared. Seven months later, however, the teeth were extracted as the resorption of dentin had advanced. In a histopathological examination, the tooth was diagnosed with odontoclastic resorptive lesions. This is a rare case of internal dental fistula, deformed teeth and odontoclastic resorptive lesions developing together.

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Journal of the Japan Veterinary Medical Association

Journal of the Japan Veterinary Medical Association 62 (3), 229-232, 2009

Japan Veterinary Medical Association

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