三次元グラフィックスによる咀嚼運動中の顎関節腔隙の観察

利用三维图形观察咀嚼过程中颞下颌关节间隙

• 批准号: 08771836
• 负责人: 宇佐美 博志
• 金额: $ 0.51万
• 依托单位: Aichi Gakuin University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-08771836/
• 关键词: 顎関節三次元再構築; 咀嚼運動; 顎関節空隙

平成8年度の研究計画では咀嚼運動中の関節空隙の観察と表示用ソフトの開発および顆頭の解剖学的形態と下顎運動の関連性の検討の3つを目標に掲げたが、形態と運動の関連性については被験者数が少なく明確な結論を得るには至らなかった。以下に関節空隙の観察結果について述べる。咀嚼時の任意の下顎位について顆頭上の約8000点での関節窩と顆頭の間の最短距離を計測し空隙量とし、さらに空隙量を1mm間隔で5段階に分け各段階ごとに面積の総和を算出して近接部位の面積として咀嚼時の各下顎位を時系列に配列し検討した。被験者Aの結果は、ガム咀嚼時の終末位で5mm以下の空隙量を示す部位の総面積は作業側が264.6mm^2平衡側が249.6mm^2、1〜2mm空隙量の部位は作業側が36.4mm^2平衡側が53.3mm^2、2〜3mmの空隙量の部位は作業側が156.0mm^2平衡側が128.4mm^2であった。開口路上の下顎位では5mm以下の空隙量の部位の総面積は作業側が128.5mm^2平衡側が211.9mm^2、1〜2mm空隙量の部位は作業側が25.4mm平衡側が53.3mm^2、2〜3mmの空隙量の部位は作業側が49.4mm^2平衡側が42.2mm^2であった。開口路から閉口路への変曲点では5mm以下の空隙量の部位の総面積は作業側が66.8mm^2平衡側が68.4mm^2、1〜2mm空隙量の部位は作業側が20.2mm^2平衡側が28.0mm^2、2〜3mmの空隙量の部位は作業側が21.8mm^2、平衡側が17.3mm^2であった。閉口路上の下顎位では5mm以下の空隙量の部位の総面積は作業側が263.0mm^2、平衡側が150.7mm^2、1〜2mm空隙量の部位は作業側が42.5mm^2、平衡側が36.4mm^2、2〜3mmの空隙量の部位は作業側が140.1mm^2、平衡側が38.0mm^2であった。以上より咀嚼運動中の関節空隙量は作業側と平衡側で動態が異なるものの絶えず1〜2mmであることがわかった。

The research plan of Heisei 8 year is to investigate the joint space in mastication movement and to discuss the relationship between the development of soft tissue and the anatomy of the head and the movement of the jaw. The following joint clearance inspection results are described below. The shortest distance between the joint socket and the head at about 8000 points in any jaw position during chewing was measured. The amount of space was measured at intervals of 1 mm. The sum of the areas of each step was calculated. The area of the proximal part was arranged in a series of jaw positions during chewing. The result of the test for the test A is that the total area of the part with the amount of void less than 5 mm at the end of the test is 264.6 mm^2 on the working side and 249.6 mm^2 on the balance side, and the part with the amount of void of 1~2 mm is 36.4 mm^2 on the working side and 53.3 mm^2 on the balance side. The part with the amount of void of 2~3 mm is 156.0 mm^2 on the working side and 128.4 mm^2 on the balance side. The total area of the lower jaw position of the opening road with the air gap less than 5 mm is 128.5 mm^2 from the working side. The balance side is 211.9 mm^2. The air gap of 1~2 mm is 25.4 mm from the working side. The balance side is 53.3 mm^2. The air gap of 2~3 mm is 49.4 mm^2 from the working side. The balance side is 42.2 mm^2. The total area of the part with the air gap of less than 5 mm at the bending point of the open road is 66.8 mm^2 on the working side, 68.4 mm^2 on the balance side, and 28.0 mm^2 on the balance side. The total area of the part with the air gap of 2~3 mm is 21.8 mm^2 on the working side and 17.3 mm^2 on the balance side. The total area of the part with the clearance of less than 5 mm on the lower part of the closed road is 263.0mm^2 on the working side, 150.7mm^2 on the balance side, 42.5mm^2 on the part with the clearance of 1~2 mm on the working side, 36.4mm^2 on the balance side, 140.1mm^2 on the part with the clearance of 2~3 mm on the working side, and 38.0mm^2 on the balance side. The joint clearance in the above chewing movement is different from the working side and the balance side. The joint clearance is 1~2 mm

项目成果

宇佐美博志 ほか: "下顎機能運動時の顆頭位の解析" 日本補綴歯科学会雑誌96回学術大会論文集. 40. 100 (1996)

Hiroshi Usami 等：“下颌功能运动时髁突位置的分析”日本修复医学会第 96 届学术会议论文集 40. 100 (1996)。