| Project/Area Number |
25463002
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | The University of Tokushima |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SHIGEMOTO Shuji 徳島大学, 大学院医歯薬学研究部, 助教 (20294704)
KORI Motoharu 徳島大学, 大学院医歯薬学研究部, 助教 (50253216)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 噛み心地 / 咀嚼運動 / 咀嚼筋活動 / 6自由度顎運動測定 / 顆頭運動 / 運動論的顆頭点 / 主機能部位 / 咀嚼筋筋活動 |
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| Outline of Final Research Achievements |
We investigated the development of an objective evaluation method for comfortable occlusion and mastication by analyzing jaw movements. The jaw movements in six degrees of freedom and masticatory muscle activities were recorded simultaneously. At the start of the burst activity of the masseter muscle on the working side during biting on the dental stopping, the working kinematic condylar point reached its rearmost position significantly before the balancing kinematic condylar point reached its intercuspal position. At the peak of the burst, both kinematic condylar points reached their intercuspal positions more closely, however, the balancing kinematic condylar point reached a more superior position than its intercuspal position. At the peak of the burst during all chewing periods of a piece of bread, the working kinematic condylar points reached their intercuspal positions more closely, compared with at the start of burst activity of the working masseter muscle.
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