A case of odontoameloblastoma arising in the maxilla

  • HOSOKAWA Hiroyoshi
    Department of Oral Medicine, Medical Science for Oral and Maxillofacial Regeneration, Medico-Dental Dynamics and Reconstruction, Institute of Health Biosciences, The University of Tokushima Graduate Faculty of Dentistry
  • MOMOTA Yukihiro
    Department of Oral Medicine, Medical Science for Oral and Maxillofacial Regeneration, Medico-Dental Dynamics and Reconstruction, Institute of Health Biosciences, The University of Tokushima Graduate Faculty of Dentistry
  • FUJISAWA Kenji
    Department of Oral Surgery, Integrated Sciences of Translational Research, Molecular Oral Medicine, Institute of Health Biosciences, The University of Tokushima Graduate Faculty of Dentistry
  • KANI Koichi
    Department of Oral Medicine, Medical Science for Oral and Maxillofacial Regeneration, Medico-Dental Dynamics and Reconstruction, Institute of Health Biosciences, The University of Tokushima Graduate Faculty of Dentistry
  • AZUMA Masayuki
    Department of Oral Medicine, Medical Science for Oral and Maxillofacial Regeneration, Medico-Dental Dynamics and Reconstruction, Institute of Health Biosciences, The University of Tokushima Graduate Faculty of Dentistry

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Other Title
  • 上顎に発生した歯牙エナメル上皮腫の1例
  • ウワアゴ ニ ハッセイ シタ シガ エナメル ジョウヒ シュ ノ 1レイ

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Odontoameloblastoma is a rare odontogenic tumor, in which dentin and enamel are formed. Histologically, odontoameloblastoma is similar to ameloblastoma. We report a case of odontoameloblastoma arising in the maxilla.<br>A 12-year-old boy complained of swelling and pain at the incisor region on the left side of the maxilla and visited our department. Computed tomography showed a unilocular radiolucency, in which many calcified bodies were observed around the impacted canine. The clinical diagnosis was an odontogenic tumor, and the lesion was extirpated under general anesthesia. Histopathological examination of the resected specimens showed the presence of hard tissues, enamel, and dentin, accompanied by an enamel organ. Consequently, the tumor was diagnosed to be an odontoameloblastoma. There has been no evidence of recurrence for 3.5 years after the operation.

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