骨格性下顎前突者の咬合に関する研究 : 第1報前方滑走運動時における臼歯部の対合関係

概要

論文の詳細を見る
Subjects who have skeletal class III malocclusion must have both the occlusion and jaw movements evaluated before treatment. Their three-dimensional features, however, have not been clarified. I therefore investigated their protrusive excursion and the occlusal relationship of molars, from a three-dimensional standpoint. Regarding this movement, I measured the inclinations of the incisal and condylar paths in seven subjects. Regarding this occlusal relationship, I measured the distance between each cusp-tip of the lower molars and its opposing surface in both the intercuspal position and the protrusive occlusal position. The results were as follows : 1) the sagittal inclinations of the paths were gentler than those of normal subjects, on average, 2) the distance between the cusp-tip and its opposing surface tended to be greater than those of normal subjects in the intercuspal position. In the protrusive occlusal position, however, there was no significant difference in the distance between the cusps in the two groups.The results mentioned above show that among the subjects examined there were no excessive disclusion of molars in the protrusive occlusal position, which was attained by gentle inclinations of both the incisal path and the condylar path.
日本補綴歯科学会の論文
1990-10-01