title: MRI analysis of the relationship between bone changes in the temporomandibular joint and articular disc position in symptomatic patients.
abstract: OBJECTIVE
  The aim of this study was to investigate bone changes in the condyle, articular eminence and glenoid fossa in relation to the position of the articular disc.
  
  
  METHODS
  148 temporomandibular joints (TMJs) of 74 symptomatic patients who underwent MRI were evaluated. The position of the disc was classified as either normal (N), disc displacement with reduction (DDwR), disc displacement without reduction (DDwoR) and posterior displacement (PD). Bone changes were investigated in the condyle and temporal components of the TMJ and classified as osteophytosis, sclerosis or erosion.
  
  
  RESULTS
  There were no bone changes in the glenoid fossa of the temporal bone. Of the total number of TMJs studied, 94 (63.5%) were N, 34 (23%) presented DDwoR, 19 (12.8%) presented DDwR and 1 (0.7%) presented PD. The bone changes in the condyle and posterior aspect of the articular eminence were associated with the position of the disc. The bone changes in the anterior aspect of the articular eminence were not associated with the position of the disc.
  
  
  CONCLUSIONS
  In cases of DDwoR, bone changes in the condyles were more common. The combination of erosion and osteophytosis in the condyle and the bone changes of the posterior aspect of the articular eminence were associated with disc position.
authors.affiliation: University of Sao Paulo, Sao Paulo, Brazil.
authors.forename: C
authors.initials: C
authors.lastname: Gil
authors.forename: K C P
authors.initials: KC
authors.lastname: Santos
authors.forename: M E P
authors.initials: ME
authors.lastname: Dutra
authors.forename: S K
authors.initials: SK
authors.lastname: Kodaira
authors.forename: J X
authors.initials: JX
authors.lastname: Oliveira
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000473:pathology*