| Project/Area Number |
12557181
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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 | 展開研究 |
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| Research Field |
矯正・小児・社会系歯学
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
SOMA Kunimichi Tokyo Medical and Dental University, Graduate School, Professor, 大学院・医歯学総合研究科, 教授 (10014200)
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| Co-Investigator(Kenkyū-buntansha) |
HISANO Masataka Tokyo Medical and Dental University, Graduate School, Research Associate, 大学院・医歯学総合研究科, 助手 (80282763)
OTSUBO Kunihiko Tokyo Medical and Dental University, Graduate School, Associate Professor, 大学院・医歯学総合研究科, 講師 (20272601)
WARITA Hiroyuki Tokyo Medical and Dental University, Dental hospital, Associate Professor, 歯学部・附属病院, 講師 (30262207)
石田 哲也 東京医科歯科大学, 大学院・医歯学総合研究科, 助教授 (80211043)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 2001: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2000: ¥4,900,000 (Direct Cost: ¥4,900,000)
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| Keywords | orthodontic wire / design system / modeling / optimization |
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| Research Abstract |
In orthodontic treatment, it is very important to decide an effective treatment for each patient. However, at present, decision of orthodontic appliances such as design of orthodontic archwire in the multi-bracket method was made according to the operator's empirical experiences. In this study, based on the improvement of super-elastic Ti-Ni alloy orthodontic archwire and the development of computational analysis method, to make the model by Delaunay lattice formation , to construct the whole system by the optimization algorithm, and to establish the computer simulation system in expectation of a more efficient orthodontic treatment become possible.
1. Tooth and PDL models were produced by Delaunay lattice formation .
Modeling of teeth and periodontal tissues from patients of malocclusion was created. In addition, stress distribution on the periodontal tissues and tooth displacement when the orthodontic forces were applied was checked.
2. Construction of static analytical model of non-linear material wire
The comparative examination between designed orthodontic archwire and actual orthodontic archwire was done.
3. Construction of analytical model combining with tooth and periodontal tissue models and designed orthodontic arch wire model
Tooth displacement and tooth movement when orthodontic forces were applied were investigated in the analytical model. And the periodontal tissues were made to change with the movement of the teeth under orthodontic force loads.
4. Application of the optimization method to adjust the analytical mode
Examination of this system with the optimization method was carried out.
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