title: Odontogenic tumours: a 15-year review from Ibadan, Nigeria.
abstract: OBJECTIVE
  To establish the incidence of odontogenic tumours in Nigeria we present our experience during the 15-year period 1980-94.
  
  
  METHODS
  Retrospective review of histopathological specimens and case notes.
  
  
  METHODS
  Teaching hospital, Nigeria.
  
  
  METHODS
  128 Patients with histologically confirmed odontogenic tumours out of a total of 415 with tumours of the mouth and jaw.
  
  
  METHODS
  Incidence, treatment, and recurrence rate.
  
  
  RESULTS
  Ameloblastoma (n = 21, 16%) and adenomatoid tumour (n = 16, 13%). Patients' ages ranged from 8 to 75 years (mean 33 for ameloblastoma, 31 for fibromyxoma, and 22 for adenomatoid tumour). The corresponding male:female ratios were 3:2, 2:3, and 1:1, and maxilla:mandible ratios 1:9, 1.1:1, and 2:1. The more radical the resection of ameloblastomas the less likely were they to recur.
  
  
  CONCLUSIONS
  Further research is required to explain the high incidence of odontogenic tumours in Nigeria, particularly ameloblastomas.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Dental Centre, University College Hospital, Ibadan, Nigeria.
authors.forename: J T
authors.initials: JT
authors.lastname: Arotiba
authors.forename: J O
authors.initials: JO
authors.lastname: Ogunbiyi
authors.forename: A E
authors.initials: AE
authors.lastname: Obiechina
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000564:Ameloblastoma / Q000453:epidemiology / Q000601:surgery; D002648:Child; D005260:Female; D005350:Fibroma / Q000453:epidemiology / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008339:Mandibular Neoplasms / Q000453:epidemiology* / Q000601:surgery; D008441:Maxillary Neoplasms / Q000453:epidemiology* / Q000601:surgery; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology; D009549:Nigeria / Q000453:epidemiology; D009808:Odontogenic Tumors / Q000453:epidemiology* / Q000601:surgery; D012189:Retrospective Studies; D012737:Sex Factors