title: Ameloblastic fibrodentinoma with a congenitally missing second premolar tooth: a case report.
abstract: Ameloblastic fibrodentinoma (AFD) is a rare benign mixed odontogenic tumor that occurs predominantly in children and young adults. AFD is usually associated with delayed eruption of the tooth and shows painless swelling. We present a case of AFD affecting an 8-year-old Japanese girl with a complaint of delayed eruption of her left mandibular second premolar tooth. Intraoral examination did not reveal any sign of pain or swelling in the left mandible. Panoramic radiography revealed a radiolucent and well-circumscribed lesion, which contained radiopaque material at the premolar lesion of the left mandible. The second deciduous molar tooth was unerupted and the second premolar tooth was congenitally lacking. Our provisional diagnoses were odontogenic tumor. The biopsy confirmed AFD. The treatment included total excision of the tumor and the second premolar tooth. No recurrence has been noted during the 2 years of follow-up.
authors.affiliation: Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan. Electronic address: hisazumi@nagasaki-u.ac.jp.
authors.forename: Hisazumi
authors.initials: H
authors.lastname: Ikeda
authors.affiliation: Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
authors.forename: Tokutarou
authors.initials: T
authors.lastname: Minamizato
authors.affiliation: Department of Oral Pathology and Bone Metabolism, Unit of Basic Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Fujita
authors.affiliation: Department of Regenerative Oral Surgery, Unit of Translational Medicine, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
authors.forename: Izumi
authors.initials: I
authors.lastname: Asahina
mesh_terms: D001641:Bicuspid / Q000002:abnormalities*; D001706:Biopsy; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008339:Mandibular Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery*; D009810:Odontoma / Q000000981:diagnostic imaging / Q000601:surgery*; D011862:Radiography, Panoramic; D014057:Tomography, X-Ray Computed