コンピュータシミュレーションによる顎運動とこう合面形態に関する研究

Abstract

Occlusal surface that is employed for occlusal reconstruction is commonly determined by the clinician's experiments. There are no superior kinematics and scientific evidence that reveal occlusal shape. The purpose of this study was to establish a kinematics standard that determines the morphology of occlusal facet. In this study, a computer simulation model was developed to analyze three-dimensional interocclusal relationship during excursive movement. The main experiment involved the following investigations by using this computer simulation study.1. Eighty-four types of simulated excursion were utilized to design corresponding jaw movement surfaces.2. These jaw movement surfaces were investigated by analyzing interocclusal distance and interocclusal angle during excursion.The results of this study showed that 29 types of simulated excursion could provide stable occlusal contacts at both intercuspal and lateral jaw positions, while others produced interference during excursion. Further researches will be required to confirm the fundamental relationship between jaw movement kinematics and ideal occlusal morphology.