| Project/Area Number |
15K20428
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Prosthodontics/ Dental materials science and
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
Ogura Reiko 東京医科歯科大学, 歯学部, 非常勤講師 (50632014)
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| Project Period (FY) |
2017-02-07 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | インプラント / 咬合力 / 咬合感覚 / 咬合面形態 / インプラント対合歯 / VAS / 咬合接触 / 歯根膜感覚 / インプラントの咬合力 / インプラントの咬合感覚 / 主機能部位 |
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| Outline of Final Research Achievements |
In order to search for the occlusal pattern of the implant, the maximum occlusal force and occlusal sensation were measured at the location of the occlusal surface of the implant and the antagonist.
There was no significant difference among the measurement points in the maximum occlusal force of the mandibular first molar implant, and the center of the antagonist, the maxillary first molar, was significantly higher than that on the buccal side. In addition, there was no significant difference in occlusal sensation among the measurement points in the both subject teeth, and no correlation with occlusal sensation and occlusal force was observed. Therefore, while implants can obtain a relatively stable occlusal force and occlusal ease at any part of the occlusal surface, it is difficult to obtain an occlusal sensation on both the maxillary and mandibular molars. It was suggested that it may be difficult to perceive the effect of the antagonist of the implant.
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| Academic Significance and Societal Importance of the Research Achievements |
インプラントを長期にわたり機能させるために，付与すべき咬合接触を模索することを目的として，インプラント及びその対合歯を被験歯として咬合面上の各部位における咬合力と咬合感覚の測定を行った．その結果，インプラントの場合にはどの部位でも安定した咬合力を得ることができるが，インプラントの咬合感覚は鈍磨であり，対合歯の咬合感覚をも鈍磨にさせることが示唆され，対合歯やその周囲組織への影響を感じ取ることが難しい可能性があることがわかった．すなわち，インプラントへの咬合接触は，インプラント自体よりも対合歯への咬合力の影響により一層留意して与える必要があると考えられる．
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