title: Multiple osseous dysplasia arising from impacted teeth: report of a case associated with odontogenic lesions.
abstract: We report a case of osseous dysplasia (OD) showing extremely rare clinical features. A 37-year-old Japanese woman was referred to our clinic complaining of a left alveolar bony swelling at an impacted canine. Radiographic examinations revealed a mixed radiopaque lesion involving the impacted left canine and also revealed an impacted left wisdom tooth with a cystic change and a clear radiopaque lesion suspected to be odontoma. All the extracted upper teeth and odontoma showed hypercementosis and the canine was fully involved in it. Histopathologically, they showed the same features and were diagnosed as OD. The findings of multiple OD from incompletely erupted teeth and odontoma in our case may well show that OD can arise from any tooth with periodontal ligaments and that focal OD can show expansive growth like the ossifying fibroma.
authors.affiliation: The First Department of Oral and Maxillofacial Surgery, Osaka University Graduate School of Dentistry, Osaka, Japan. iida@dent.osaka-u.ac.jp
authors.forename: Seiji
authors.initials: S
authors.lastname: Iida
authors.forename: Mitsunobu
authors.initials: M
authors.lastname: Kishino
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Sakai
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ishida
authors.forename: Masaya
authors.initials: M
authors.lastname: Okura
authors.forename: Satoru
authors.initials: S
authors.lastname: Toyosawa
authors.forename: Mikihiko
authors.initials: M
authors.lastname: Kogo
mesh_terms: D000328:Adult; D001706:Biopsy; D002485:Cementoma / Q000175:diagnosis*; D003481:Cuspid / Q000473:pathology; D003803:Dentigerous Cyst / Q000175:diagnosis; D005260:Female; D006801:Humans; D008441:Maxillary Neoplasms / Q000175:diagnosis*; D008964:Molar, Third / Q000473:pathology; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis*; D009810:Odontoma / Q000175:diagnosis*; D011862:Radiography, Panoramic; D014057:Tomography, X-Ray Computed; D014095:Tooth, Impacted / Q000175:diagnosis*