title: Relationship between disk position and degenerative bone changes in temporomandibular joints of young subjects with TMD. An MRI study.
abstract: This study determines the frequency and relationship between disk position and degenerative bone changes in temporomandibular joints in children and adolescent patients with internal derangement. Study design: TMJ, MRI of 88 patients were analyzed (average age: 14.7 years-old, range age: 10-18 years-old), female n = 65 (73.9%) and male n = 23 (26.1%). Images obtained were used to determine the frequency of disk position, joint effusion (JE) and degenerative bone changes (OA). Images were assessed by a calibrated radiologist (Kappa = 0.82).
  
  
  RESULTS
  No significant association was found between disk displacement with reduction and degenerative bone changes (Chi2 = 9.894; OR = 0.375; p = 0.0017), nor disk without displacement (Chi2 = 9.448; OR = 0.223; p = 0.0021). A significant association was found between disk displacement without reduction and degenerative bone changes (Chi2 = 30.951; OR = 6.304; p = 0.0001).
  
  
  CONCLUSIONS
  There is a significant association between disk displacement without reduction and degenerative bone changes (p = 0.0001) in children and adolescent patients with TMD.
authors.forename: G
authors.initials: G
authors.lastname: Moncada
authors.forename: D
authors.initials: D
authors.lastname: Cortés
authors.forename: R
authors.initials: R
authors.lastname: Millas
authors.forename: C
authors.initials: C
authors.lastname: Marholz
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008335:Mandibular Condyle / Q000473:pathology; D010003:Osteoarthritis / Q000175:diagnosis*; D016037:Single-Blind Method; D013582:Synovial Fluid; D013701:Temporal Bone / Q000473:pathology; D019224:Temporomandibular Joint Disc / Q000473:pathology*; D013705:Temporomandibular Joint Disorders / Q000175:diagnosis*