title: Prevalence of bifid mandibular condyle in a selected population in South of iran.
abstract: BACKGROUND
  Bifid mandibular condyle (BMC) is a rare anomaly of uncertain origin which may play a role in some defects in temporomandibular joints. Since it may be misinterpreted as fractures or tumors in condylar area, proper diagnosis will help to prevent unnecessary treatments. A comprehensive knowledge about BMC may help to understand the developmental course of condyle and temporomandibular joints more clearly.
  
  
  OBJECTIVE
  The purpose of this study was to estimate the prevalence of bifidity of condyle in a selected population in Iran by employing dental panoramic view.
  
  
  METHODS
  Panoramic views of 1000 individuals (767 female, 233 male individuals) were assessed for bifidity. The patients were over 18 years old and had attended the radiology department of Shiraz dental school from September 2012 to March 2013.
  
  
  RESULTS
  A total of 35(3.5%) case of bifidity was detected. Unilateral form was much more prevalent (32 unilateral cases versus 3 bilateral). The left-side bifidity was 3 times more prevalent than the right side. A large number of bifid condyles (63%) have shown symptoms of temporomandibular joint pain or click or both.
  
  
  CONCLUSIONS
  The prevalence of bifidity in our population was about 3.5%, which was significantly high compared to the other published reports. Symptoms (click and pain) were also much more detected in our study.
authors.affiliation: Dept. of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz university of Medical Sciences, Shiraz, Iran.
authors.forename: Abdol Aziz
authors.initials: AA
authors.lastname: Haghnegahdar
authors.affiliation: Dept. of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz university of Medical Sciences, Shiraz, Iran.
authors.forename: Pegah
authors.initials: P
authors.lastname: Bronoosh
authors.affiliation: Dept. of Oral and Maxillofacial Radiology, School of Dentistry, Shiraz university of Medical Sciences, Shiraz, Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Khojastepour
authors.affiliation: Undergraduate Student, School of Dentistry, International Branch of Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Parissa
authors.initials: P
authors.lastname: Tahmassebi
keywords: Bifidity; Mandibular condyle; Panoramic radiography; Prevalence