歯牙滑走時における顆頭点および切歯点運動の解析

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概要

• 論文の詳細を見る

• In order to investigate the condylar path and incisal path without raising occlusal vertical dimension, mandibular movements with excursion in 31 subjects with normal dentition and jaw relation were recorded on pantograph. The mandibular movements were reproduced from the recordings on a Denar SE Fully Adjustable Articulator, and condylar path and incisal path were measured. Their distance of displacement and direction of movement were then examined. The results were as follows : 1. Displacement of incisal point starting from centric occlusion to anterior edgeto-edge occlusion was 5.0±1.4 mm and that of condylar point was 4.9±1.3 mm. Positive correlation was recognized between the two. 2. Inclination of protrusive incisal path was 36.5±9.6° and that of protrusive condylar path was 33.8±5.7°. No correlation was recognized between the two. 3. Inclination of sagittal section of protrusive occlusal facet on the lower central incisor was correlated with inclination of protrusive incisal path but not with inclination of condylar path. 4. Displacement of incisal point starting from centric occlusion to cuspid edge-to-edge occlusion was 4.7±1.0 mm and that of condylar point on the balancing side was 4.3±0.9 mm. Positive correlation was recognized between the two. 5. Inclination of the lateral incisal path was 62.9±10.8° and that of lateral condylar path was 35.8±5.8°. No correlation was recognized between the two. 6. Inclination of lateral condylar path on working side was 29.4±9.8°. No correlation with the inclination of lateral condylar path was recognized. 7. Condylar path and incisal path were in positive correlation in the distance of movement. However, no correlation was recognized in the direction of movement which projected on the sagittal plane. 8. Inclination of protrusive path and that of lateral path of posterior tooth was 36.4±7.1° and 38.2±6.2° respectively. Neither path was correlated with inclination of condylar path. However, both were correlated with inclination of incisal path. The direction of movement of the molar region was greatly affected by incisal path rather than by condylar path.

• 九州歯科学会の論文
• 1984-02-25

著者

• 久保 雅晴

  九州歯科大学口腔機能科学専攻口腔機能再建学講座顎口腔欠損再構築学分野

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• 歯牙滑走時における顆頭点及び切歯点運動の解析 : 主論文の要旨
• 歯牙滑走時における顆頭点および切歯点運動の解析

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