Accurate evaluation of balancing-side contacts in relation to internal derangements of the temporomandibular joint: possible roles of balancing-side protection.
Balancing-side contacts were precisely evaluated in relation to internal derangements of the temporomandibular joint. Balancing-side contacts were classified into the three following groups: 1) Severe balancing-side interference, 2) balancing-side interference and 3) balancing-side protective contacts. Balancing-side protective contacts were defined as balancing-side occlusal contacts on lower first and/or second molar in lateral excursive movements, which are observed only when clenching forces are exerted. The prevalence of the balancing-side protection was revealed to be highly correlated with that of internal derangements of temporomandibular joint. These results strongly suggest that balancing-side protection might play an important role as a regulating mechanism in the etiology of internal derangements of temporomandibular joint.
Minagi
S
S
Watanabe
H
H
Tsuru
H
H
D000328:Adult; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000150:complications; D009068:Movement; D013016:Sound; D013705:Temporomandibular Joint Disorders / Q000209:etiology* / Q000473:pathology / Q000503:physiopathology