title: Clinical and magnetic resonance imaging study of unilateral sideways disc displacements of the temporomandibular joint.
abstract: The aim of our study was to find symptomatic diagnostic factors for sideways displacement of the temporomandibular joint disc, compared with anterior or rotational disc displacement. A consecutive series of 2310 temporomandibular joints were examined with MRI to define the clinical signs and symptoms particularly related to sideways disc displacement compared to anterior disc displacement with logistic regression model. Bone change of the mandibular condyle and age were negatively related factors in differentiating cases with lateral disc displacement from anterior disc displacement without reduction. Range of mouth opening (over 40 mm) was a significant predictor (odds ratio 4.5865 for lateral disc displacement). This study suggested the wide opening of the mouth to become the predictor for the lateral disc displacement among the cases suspected to have disc displacement without reduction.
authors.affiliation: Maxillofacial Surgery, Maxillofacial Reconstruction and Function, Division of Maxillofacial and Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan. s-aoyama.mfs@tmd.ac.jp
authors.forename: Shigeru
authors.initials: S
authors.lastname: Aoyama
authors.forename: Koji
authors.initials: K
authors.lastname: Kino
authors.forename: Teruo
authors.initials: T
authors.lastname: Amagasa
authors.forename: Ichiro
authors.initials: I
authors.lastname: Sakamoto
authors.forename: Ken
authors.initials: K
authors.lastname: Omura
authors.forename: Eiichi
authors.initials: E
authors.lastname: Honda
authors.forename: Kaoru
authors.initials: K
authors.lastname: Kobayashi
authors.forename: Chinami
authors.initials: C
authors.lastname: Igarashi
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Yoda
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005157:Facial Pain / Q000503:physiopathology; D005260:Female; D006801:Humans; D004204:Joint Dislocations / Q000145:classification* / Q000503:physiopathology; D016015:Logistic Models; D008279:Magnetic Resonance Imaging; D008297:Male; D008335:Mandibular Condyle / Q000473:pathology / Q000503:physiopathology; D008875:Middle Aged; D009068:Movement; D016017:Odds Ratio; D011237:Predictive Value of Tests; D016059:Range of Motion, Articular / Q000502:physiology; D012399:Rotation; D012680:Sensitivity and Specificity; D019224:Temporomandibular Joint Disc / Q000473:pathology* / Q000503:physiopathology