骨格性下顎前突者の咬合に関する研究 : 第2報側方滑走運動時の大臼歯部の対合関係と咀嚼運動パターンとの関係について

概要

論文の詳細を見る
Patients having skeletal class III malocclusion are knccwn to exhibit a wide variety of chexving patterns. This situation is believed to be caused by differences in occlusal conditions, the nature of which have not been clarified. I therefore investigated the relationship between their occlusal condition of the molars during lateral excursion and their chewing patterns. With regard to occlusion, I measured the distance between each occlusal surface of the lower molars and its opposing surface in a lateral occlusal position. Repxarding masticatory patterns, I classified chewing strokes of the incisal point into 4 patterns, depending on whether or not the gliding phase was in evidence. The results were as follows : 1) In cases where gliding movements appeared during chewing strokes, the average of the measured distance on the working side was less than 0.7mm ; 2) even if this condition regarding distance was satisfied, gliding movement did not appear, if occlusal contact occurred on the non-working side. The results cited above show that disclusion of the working side molars and the tooth contact of the non-working side molars during lateral excursion directly affect the commencement of the gliding phase in chewing strokes.
日本補綴歯科学会の論文
1990-12-01