title: Effectiveness of bone scans in the diagnosis of osteoarthritis of the temporomandibular joint.
abstract: OBJECTIVE
  The objective of this study was to evaluate the usefulness of bone scan procedures for the diagnosis of temporomandibular joint (TMJ) osteoarthritis.
  
  
  METHODS
  From February 2009 to June 2009, 22 patients (4 males and 18 females) from Seoul National University Bundang Hospital, Republic of Korea, were diagnosed with TMJ disorder. They were examined by clinical examination, plain radiograph and bone scan and were categorized into three groups: normal, internal derangement and osteoarthritis. TMJ uptake ratios and asymmetrical indices were calculated.
  
  
  RESULTS
  There were no significant differences in uptake ratios associated with pain and bone change. However, significant results were obtained when comparing uptake ratios between the osteoarthritis and non-osteoarthritis groups.
  
  
  CONCLUSIONS
  It was concluded from this study that bone scans may help to diagnose osteoarthritis when increased uptake ratios are observed.
authors: Department of Oral and Maxillofacial Surgery, School of Dentistry, Section of Dentistry, Seoul National University Bundang Hospital, Republic of Korea.
authors: J-H
authors: JH
authors: Kim
authors: Y-K
authors: YK
authors: Kim
authors: S-G
authors: SG
authors: Kim
authors: P-Y
authors: PY
authors: Yun
authors: J-D
authors: JD
authors: Kim
authors: J-H
authors: JH
authors: Min
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D018771:Arthralgia / Q000000981:diagnostic imaging; D005157:Facial Pain / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods; D004204:Joint Dislocations / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000000981:diagnostic imaging*; D010294:Parietal Bone / Q000000981:diagnostic imaging; D010808:Physical Examination; D011862:Radiography, Panoramic; D011877:Radionuclide Imaging; D019275:Radiopharmaceuticals; D013669:Technetium Tc 99m Medronate / Q000031:analogs & derivatives; D013705:Temporomandibular Joint Disorders / Q000000981:diagnostic imaging*; D055815:Young Adult
chemical_list: D019275:Radiopharmaceuticals; C024226:technetium Tc 99m hydroxymethylene diphosphonate; D013669:Technetium Tc 99m Medronate