title: Association between mandibular condylar position and clinical dysfunction index.
abstract: OBJECTIVE
  Condylar position in the glenoid fossa has been associated with temporomandibular disorders. The purpose of the present study was to investigate the correlation between clinical dysfunction index (Di) and mandibular condylar position in patients with temporomandibular joint dysfunction (TMD) using cone beam computed tomography (CBCT).
  
  
  METHODS
  In this cross-sectional study, participants were recruited from the Department of Maxillofacial Radiology at Shiraz Dental University in Iran. The condylar position was assessed on the CBCT images of 120 temporomandibular joints in 60 patients with TMD. Patients were divided into 3 groups based on Helkimo's clinical Di. The chi-square test was used to correlate degree of the Helkimo's Di with the mandibular condylar position. The p value was set at 0.05.
  
  
  RESULTS
  A total of 60 patients (42 women and 18 men; mean age, 33.4 years) participated in this study. Significant differences in condylar position were found among the 3 groups (Di I, II, and III) (p < 0.05). Patients with mild to moderate TMD were found to have anteriorly and concentric seated condyles. Posteriorly seated condyles were found in patients with severe TMD.
  
  
  CONCLUSIONS
  Condylar position is associated with different severity of TMD.
authors.affiliation: Oral Radiology Department, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran. Electronic address: paknahadmaryam@yahoo.com.
authors.forename: Maryam
authors.initials: M
authors.lastname: Paknahad
authors.affiliation: Oral Radiology Department, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran; Biomaterial Research Center, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Shoaleh
authors.initials: S
authors.lastname: Shahidi
mesh_terms: D000328:Adult; D054893:Cone-Beam Computed Tomography / Q000379:methods*; D003430:Cross-Sectional Studies; D005157:Facial Pain / Q000503:physiopathology; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008297:Male; D008335:Mandibular Condyle / Q000000981:diagnostic imaging*; D063806:Myalgia / Q000503:physiopathology; D016059:Range of Motion, Articular / Q000502:physiology; D013701:Temporal Bone / Q000000981:diagnostic imaging; D013704:Temporomandibular Joint / Q000503:physiopathology; D013705:Temporomandibular Joint Disorders / Q000145:classification* / Q000000981:diagnostic imaging; D013706:Temporomandibular Joint Dysfunction Syndrome / Q000145:classification* / Q000000981:diagnostic imaging; D055815:Young Adult
keywords: Clinical dysfunction index; Condylar position; Cone beam computed tomography; Temporomandibular joint; Temporomandibular joint dysfunction; Temporomandibular joint imaging