成人正常者における咬頭嵌合位および側方運動時の咬合状態に関する研究 : 第1編立体的検索方法および咬頭嵌合位の咬合状態

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The occlusions of premolars and molars were measured at the intercuspal position of 20 normal natural dentitions (average age : 24. 5 years old). Taking the interocclusal record of the upper and lower molars, a plane figure was constructed by using the "Superposed rubber pattern method". It was the method in which the interocclusal record was sliced perpendicularly to the Camper's plane. The sliced patterns were then traced and a plane figure was graphed by superposing each traced figures. The whole area in the unilateral lower four molars, the five different areas divided the intraocclusal distance, and the intraocclusal cubic volumes were measured, respectively. The results were as follows : 1. In the whole area the average value was 318.31mm^2. 2. The average values were 136.47mm^2, 57.02mm^2, 50.12mm^2, and 74.72mm^2 in each of the areas of the intraocclusal distance over 2.0mm, the from 2.0mm to 1.0mm, the from 1.0mm to 0.5mm, and the under 0.5mm, respectively. 3. The average value was 21.44mm^2 in the area of the intraocclusal distance under 0.05mm. 4. The intraocclusal cubic volume was measured by applying the Simpson's rule. The average value was 289.78mm^3.
1991-08-01