| Project/Area Number |
14571861
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | Showa University |
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Principal Investigator |
FUJISHIMA Akihiro Showa University, Oral Biomaterials and Technology, Assistant Prof., 歯学部, 講師 (50209045)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAZAKI Takashi Showa University, Oral Biomaterials and Technology, Prof., 歯学部, 教授 (40175617)
SUZUKI Masako Showa University, Chemistry, Professor, 教養部, 教授 (90053892)
YAMAMOTO Masato Showa University, Chemistry, Assistant Prof., 教養部, 講師 (50277844)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2003: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2002: ¥2,900,000 (Direct Cost: ¥2,900,000)
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| Keywords | Cold plasma / dental metal / surface treatment / bonding / plasma-etching / プラズマエッチング |
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| Research Abstract |
The purpose of this sturdy was to investigate the effectiveness of surface treatment to commercial pure titanium and dental Ag-Pd alloy applied by cold plasma treatment (CP treatment) using the experimentally developed equipment having a DC power supply (Initial voltage: 400V, Current density: 0.2mA/mm^2). Treatment effect to bonding characteristics of resin-based luting cement and adsorption situation of metal primer by CP treatment were also examined. Tensile bond strength of dental metals was increased by CP treatment significantly. CP treatment for three minutes to titanium, and that for ten minutes to Ag-Pd alloy were was suitable for bonding. SEM observation appeared CP treatment did not change the surface texture of titanium. However, the surface of Ag-Pd alloy after CP treatment showed significant rough surface by plasma-etching effect. Titanium plates contaminated with human saliva recovered by CP treatment. FT-IR indicated CP treatment enhanced the reaction of the metal primer to titanium in order to remove the contamination.
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