title: A case of complex odontoma associated with an impacted lower deciduous second molar and analysis of the 107 odontomas.
abstract: OBJECTIVE
  Odontoma is a comparatively common odontogenic tumor, and it may lead to interference with the eruption of its associated tooth. Odontomas are mostly associated with permanent teeth, and they are rarely associated with deciduous teeth. The purpose of this report is to analyze 107 odontomas and to present a case of complex odontoma associated with a lower deciduous second molar.
  
  
  METHODS
  The 106 cases were analyzed with regard to the following parameters: age, gender, location, erupted teeth, congenital missing teeth, radiological features, histopathological features and prognosis.
  
  
  RESULTS
  Of the 106 cases, 41 were complex odontoma, 62 were compound odontoma, and three were immature odontoma. Compound odontoma had a predilection for the anterior. Complex odontoma occurred more often at the mandible.
  
  
  CONCLUSIONS
  Odontoma located above the tooth crown of lower deciduous molar did not behave clinically different from that associated with permanent tooth. An odontoma could be related with a supernumerary tooth or a missing tooth. If odontomas, which interfered with tooth eruption, were extirpated early, the impacted teeth would probably erupt normally and be normal in shape.
authors: Department of Oral and Maxillofacial Radiology, Okayama University Graduate School, Japan. tomi@md.okayama-u.ac.jp
authors: M
authors: M
authors: Hisatomi
authors: J I
authors: JI
authors: Asaumi
authors: H
authors: H
authors: Konouchi
authors: Y
authors: Y
authors: Honda
authors: T
authors: T
authors: Wakasa
authors: K
authors: K
authors: Kishi
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000848:Anodontia / Q000150:complications; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008339:Mandibular Neoplasms / Q000145:classification / Q000150:complications* / Q000000981:diagnostic imaging; D008875:Middle Aged; D008963:Molar / Q000473:pathology*; D009810:Odontoma / Q000145:classification / Q000150:complications* / Q000000981:diagnostic imaging; D011379:Prognosis; D011859:Radiography; D012189:Retrospective Studies; D012737:Sex Factors; D014094:Tooth, Deciduous / Q000473:pathology*; D014095:Tooth, Impacted / Q000209:etiology*; D014096:Tooth, Supernumerary / Q000150:complications