title: Odontogenic tumors.
abstract: OBJECTIVE
  This study aims to analyze the frequency and distribution of odontogenic tumors in a Greek population and compare the findings with those reported in the recent literature.
  
  
  METHODS
  Records of the Department of Oral Medicine and Pathology, Dental School, University of Athens, with histologic diagnosis of odontogenic tumors (based on the World Health Organization 2005 classification) were reviewed retrospectively from January 1970 to December 2011.
  
  
  RESULTS
  A total of 652 cases of odontogenic tumors were reported. Of these, 651 (99.8%) were benign and only 1 (0.2%) was malignant. Keratocystic odontogenic tumor was the most frequent lesion (52.7%), followed by odontoma (18.9%) and ameloblastoma (16.1%). The mean age of patients was 38.0 years with a wide range (2.5-92 years).
  
  
  CONCLUSIONS
  Odontogenic tumors are rare lesions and appear to show a definite geographic variation. In Athens, Greece, they are presented mainly by the keratocystic odontogenic tumor, odontoma, and ameloblastoma.
authors.affiliation: From the Departments of *Oral Medicine and Pathology and †Oral and Maxillofacial Surgery, Dental School, University of Athens, Athens, Greece.
authors.forename: Evanthia
authors.initials: E
authors.lastname: Chrysomali
authors.forename: Minas
authors.initials: M
authors.lastname: Leventis
authors.forename: Savas
authors.initials: S
authors.lastname: Titsinides
authors.forename: Vasileios
authors.initials: V
authors.lastname: Kyriakopoulos
authors.forename: Alexandra
authors.initials: A
authors.lastname: Sklavounou
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006115:Greece; D006801:Humans; D015994:Incidence; D008297:Male; D008339:Mandibular Neoplasms / Q000453:epidemiology; D008441:Maxillary Neoplasms / Q000453:epidemiology; D008875:Middle Aged; D009808:Odontogenic Tumors / Q000453:epidemiology*; D009810:Odontoma / Q000453:epidemiology; D012189:Retrospective Studies; D055815:Young Adult