2011 Fiscal Year Final Research Report
Development of a high accuracy analytical system for medical treatment of malfunction of mandibular movement
| Project/Area Number |
21300187
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Medical systems
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
INOU Norio 東京工業大学, 大学院・理工学研究科, 教授 (70126308)
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| Co-Investigator(Kenkyū-buntansha) |
KOSEKI Michihiko 信州大学, 繊維学部, 准教授 (50334503)
MAKI Koutarou 昭和大学, 歯学部, 教授 (80219295)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 顎運動 / 運動機能 / 咬合状態 / 咀嚼 / 運動分析 / 干渉検出 |
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| Research Abstract |
The human mandible produces variety of movements because the mandibular joints are able to move to both rotational and translational directions. To make a proper diagnosis of the malfunction of occlusion, it needs to observe exact mandibular movements. This study aims to develop a 3-D mandibular display system that provides useful biomechanical information for medical diagnosis of the malfunction of occlusion.
1. The display system was successfully to decrease the measurement error within 0. 1mm optimizing allocation of video cameras and selecting a proper frame rate of the cameras.
2. We developed a method to produce a precise mandibular model for each patient by use of the CT data of gypsum mold of teeth. Contact states and detection of interference between up and down teeth were demonstrated.
3. It was clarified that masticatory muscles cooperatively worked in mastication by analyzing time change of muscular lengths of masticatory muscles.
4. We proposed a method to synthesize chewing motion from three basic motion modes. The method provides a unified estimation for malfunction of mandibular movement.
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