title: Odontogenic tumors: a study of 340 cases in a Brazilian population.
abstract: BACKGROUND
  The aim of this study was to determinate the relative frequency of odontogenic tumors (OTs) in a Brazilian population and to compare this data with previous reports.
  
  
  METHODS
  We reviewed the achieves of 19 123 specimens from oral pathology laboratory of Universidade Federal de Minas Gerais, from 1954 to 2004. Using the criteria of histologic typification published by the World Health Organization in 1992, we classified the OTs.
  
  
  RESULTS
  A total of 340 OTs were found. The frequency of OTs comprises 1.78% of all pathologic specimens in our laboratory. The most frequent tumor was ameloblastoma (45.2%), followed by odontomas (24.91%), and myxomas (9.1%).
  
  
  CONCLUSIONS
  Odontogenic tumors are uncommon lesions in this Brazilian population and malignant OTs are very rare. The relative frequency of various types of OTs, age, and gender distribution are similar to those reported in African, Asian but not to Chilean and North American series.
authors.affiliation: Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
authors.forename: Anacélia Mendes
authors.initials: AM
authors.lastname: Fernandes
authors.forename: Eliza Carla Barroso
authors.initials: EC
authors.lastname: Duarte
authors.forename: Flávio Juliano Garcia Santos
authors.initials: FJ
authors.lastname: Pimenta
authors.forename: Leandro Napier
authors.initials: LN
authors.lastname: Souza
authors.forename: Vagner Rodrigues
authors.initials: VR
authors.lastname: Santos
authors.forename: Ricardo Alves
authors.initials: RA
authors.lastname: Mesquita
authors.forename: Maria Cássia Ferreira
authors.initials: MC
authors.lastname: de Aguiar
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma / Q000453:epidemiology; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008339:Mandibular Neoplasms / Q000453:epidemiology; D008441:Maxillary Neoplasms / Q000453:epidemiology; D008875:Middle Aged; D018333:Odontogenic Cyst, Calcifying / Q000453:epidemiology; D009808:Odontogenic Tumors / Q000453:epidemiology*; D009810:Odontoma / Q000453:epidemiology; D012189:Retrospective Studies; D012737:Sex Factors