title: A 10-year retrospective study on odontogenic tumors in Iran.
abstract: OBJECTIVE
  The aim of this study was to review cases of odontogenic tumors diagnosed in two pathology centers in Tehran, Iran, during a 10-year period.
  
  
  METHODS
  Patients' records were seen at two teaching pathology Centre's of Shahid Beheshti University between the months of March 2000 to 2010 with histologic diagnosis of any type of odontogenic tumors. The records were analyzed for frequency, age, sex, site, as well as clinical, radiographic and histopathologic findings.
  
  
  RESULTS
  Of 30706 biopsies, 4767 (15.5%) cases were diagnosed as oral and maxillofacial lesions. Among these, 720 cases were tumoral with 188 (26.1%) cases of odontogenic tumors. Tumors with odontogenic epithelium origin formed 70.2% of total numbers of odontogenic tumors. Mixed odontogenic tumors and tumors of odontogenic ectomesenchyme comprised 12.2% and 17.5% of the cases respectively. Ameloblastoma, with a frequency of 62.2% was the most common tumor in this review which was followed by odontoma and odontogenic myxoma.
  
  
  CONCLUSIONS
  Although there are few studies on odontogenic tumors in literature, the comparison of our results with existing data shows significant differences in the distribution of tumors and age of patients, which may be due to ethnic features and geographic distribution of patients. Future studies on other ethnic groups are essential for further clarification of the findings in this research.
authors: Department of Oral and Maxillofacial Pathology, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors: Nasim
authors: N
authors: Taghavi
authors: Moones
authors: M
authors: Rajabi
authors: Leili
authors: L
authors: Mehrdad
authors: Samad
authors: S
authors: Sajjadi
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000564:Ameloblastoma / Q000453:epidemiology; D001706:Biopsy / Q000706:statistics & numerical data; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D007492:Iran / Q000453:epidemiology; 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; D012737:Sex Factors; D055815:Young Adult