title: Condylar motion in patients with reduced anterior disc displacement.
abstract: The influence of reduced anterior disc displacement on condylar motion has not been fully examined in young adults. Reduced anterior disc displacement was hypothesized to inhibit condylar motion. Using a six-degrees-of-freedom jaw-tracking system, we recorded bilateral condylar motion during maximum open-close jaw movement and gum-chewing on both sides in ten young adults with unilateral reduced anterior disc displacement and in ten control subjects without temporomandibular disorders. The bilateral condylar motion during both maximum open-close jaw movement and chewing on the disc-displacement side was inhibited in the test group. The condylar motion on the disc-displacement side during chewing on the non-disc-displacement side was also inhibited in the test group. These results suggest that the limitation of condylar motion on the disc-displacement side may influence condylar motion on the non-disc-displacement side during maximum open-close jaw movement, and mastication on the disc-displacement side in young adults.
authors: Department of Orthodontics, Okayama University Graduate School of Medicine and Dentistry, Japan.
authors: S
authors: S
authors: Miyawaki
authors: Y
authors: Y
authors: Tanimoto
authors: M
authors: M
authors: Inoue
authors: Y
authors: Y
authors: Sugawara
authors: T
authors: T
authors: Fujiki
authors: T
authors: T
authors: Takano-Yamamoto
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007574:Jaw Relation Record; D004204:Joint Dislocations / Q000503:physiopathology*; D008297:Male; D008335:Mandibular Condyle / Q000503:physiopathology*; D008409:Mastication; D009068:Movement; D019224:Temporomandibular Joint Disc / Q000503:physiopathology*; D013705:Temporomandibular Joint Disorders / Q000503:physiopathology*