2019 Fiscal Year Final Research Report
Establishment of metal-free posterior restoration technique with predictability and long-term durability
| Project/Area Number |
17K11715
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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 |
Conservative dentistry
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| Research Institution | Matsumoto Dental University (2019)
Tokyo Dental College (2017-2018) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
春山 亜貴子 東京歯科大学, 歯学部, 講師 (30385174)
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 親水化処理 / CAD/CAM / メタルフリー / 接着阻害 / 重合阻害 / 保全 |
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| Outline of Final Research Achievements |
Based on the "metal-free dental restoration" as the new trend of clinical dentistry, we presumed the clinical problems mainly focused on the factor of material application, in order to improve their predictability and long-term durability/stability. The results showed that the irradiation of atmospheric pressure plasma or UV (ultra-violet) light significantly improved the hydrophilicity of the irradiated surface. We also indicated that the residual solvent of the adhesive resin causes the deterioration of the physical properties after light curing. Furthermore, it was shown that the effectiveness of silane treatment in the application of the resin coating method depends on the coating material. When professional mechanical tooth cleaning is conducted after the restoration, the selections of the grain size of prophylaxis paste, polishing pressure and polishing time affected the surface roughness and gloss.
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| Free Research Field |
保存修復学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究では，特に前歯部，臼歯部へのメタルフリー修復にかかわる様々な問題点を提示し，その対処法を検討することで現代の患者ニーズにマッチした，より満足度の高い修復治療を実現するための材料学的，あるいは技術的なアプローチについて，その効果を検証したものである．我々が得た研究成果は，予知性や永続性に与える因子を明らかにし，ひいては患者信頼性の向上に寄与できるものであると考えられる．
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