| Project/Area Number |
25861813
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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 |
Conservative dentistry
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| Research Institution | Nihon University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | 界面科学 / 歯質接着システム / 化学的接着機構 / 歯質接着性 / 表面自由エネルギー / シングルステップアドヒーシブ |
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| Outline of Final Research Achievements |
This study investigated the chemical bonding mechanisms of dental adhesive systems from interfacial science perspectives.
First, the surface free energy of tooth treated with the self-etching adhesives was investigated. The surface free energies of the treated surface was different depending on the type of adhesives. The data suggested that surface free energy measurements might predict differences in the chemical bonding mechanisms of adhesive systems. Second, the surface free energy and bond strength of the self etch adhesives with and without an oxygen inhibited layer were investigated. The γS- values and bond strength significantly decreased when the oxygen inhibited layer was removed. The results of this study indicated that the presence of an oxygen inhibited layer in self etch adhesives promoted higher bond strength.
The results of these studies indicate that interface science analysis provides information about the chemical bonding mechanisms of dental adhesive systems.
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