1 咬合部位の前後差が顎関節部負荷に及ぼす影響 : 咬筋活動を想定した乾燥頭蓋骨を用いた実験(第489回大阪歯科学会例会)

概要

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We investigated the magnitude of occlusal pressure and stress distribution on the condylar head produced by experimental occlusal forces imparted at different positions of occlusal support using a dry human skull Occlusal pressure increased as the occlusal support was moved distally Pressure on the frontal area of the head of the condyle on the nonworking side decreased as the posterior occlusal support increased, while pressure on the top of the condyle increased Little pressure was measured on the frontal and lateral areas of the head of the condyle on the working side when occlusal support was on the first premolar Pressure on the frontal and lateral areas of the nonworking condyle head was decreased when occlusal support was on the posterior teeth, and the working side condyle head floated in the maxillary fossa when occlusal support was on the second and third molars Pressure on the condyle head changed position and magnitude depending on the occlusal support Special care should be taken when changing the antero-postenor positions of molars during orthodontic treatment
大阪歯科学会の論文
2003-09-25