咬合治療支援のためのハイブリッド型三次元顎運動診断システムの開発（個体別ハイブリッド顎骨モデルを利用した上下歯の接触状態の解析）

概要

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Contact state of upper and lower teeth is very important for diagnostic treatment of occlusal disorders. This paper discusses a 3-D motion display system with a patient-specific hybrid model to analyze detailed contact state of upper and lower teeth. The hybrid model consists of maxillary and mandibular bone data with cone beam X-ray CT and precise teeth shape data with industrial X-ray CT. In terms of 3-D motion measurement, appropriate camera angles and frame rates are also discussed to improve the accuracy of the display system. With these improvements, this study achieves 0.1 mm accuracy which enables to evaluate the contact state of teeth. Several masticatory movements are analyzed with the new system and the analytical results provide detailed information of contact state during mastication of foods.
一般社団法人日本機械学会の論文