title: Comparative study of the prevalence of temporomandibular joint osteoarthritic changes in cone beam computed tomograms of patients with or without temporomandibular disorder.
abstract: OBJECTIVE
  To compare the prevalence of temporomandibular joint (TMJ) osteoarthritic changes in cone beam computed tomography (CBCT) images of temporomandibular disorder (TMD) and non-TMD patients.
  
  
  METHODS
  A retrospective analysis of CBCT images of the joints of TMD and non-TMD patients was performed. The presence or absence of osteoarthritic changes (condylar erosion, osteophyte, subcortical cyst, or generalized sclerosis) in each TMJ was evaluated. The prevalence within the two study groups were compared by using Chi-square statistics.
  
  
  RESULTS
  At least one type of osteoarthritic change was present in78.6% of joints in the TMD group and 79.7% in the non-TMD group. No significant difference was found in prevalence of osteoarthritic changes between the TMD and non-TMD groups in the overall study sample or within the subsets of gender and age in the groups.
  
  
  CONCLUSIONS
  The lack of a significant difference in prevalence of TMJ osteoarthritic changes in TMD and non-TMD patients highlights the equivocal relationship between osseous TMJ morphology and degenerative bone disease.
authors.affiliation: Assistant Professor, Department of Oral Medicine and Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, College of Dentistry, King Saud University, Riyadh, Saudi Arabia. Electronic address: asma.alekrish@gmail.com.
authors.forename: Asma'a Abdurrahman
authors.initials: AA
authors.lastname: Al-Ekrish
authors.affiliation: Intern, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Hebah Omar
authors.initials: HO
authors.lastname: Al-Juhani
authors.affiliation: Intern, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Roaa Ibrahim
authors.initials: RI
authors.lastname: Alhaidari
authors.affiliation: Associate Professor, Department of Oral Medicine and Diagnostic Sciences, Division of Oral and Maxillofacial Radiology, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
authors.forename: Wafa Mohamed
authors.initials: WM
authors.lastname: Alfaleh
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging* / Q000453:epidemiology; D015995:Prevalence; D012189:Retrospective Studies; D012529:Saudi Arabia / Q000453:epidemiology; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging* / Q000453:epidemiology