| Project/Area Number |
06807153
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
補綴理工系歯学
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| Research Institution | Okayama University |
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Principal Investigator |
TANAKA Jiro Okayama Univ.Dept.of Dental Materals, Asist.Prof., 歯学部, 助手 (40171764)
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| Co-Investigator(Kenkyū-buntansha) |
NAKAI Hiroyuki Okayama Univ., Dept of Dental Materials, Prof., 歯学部, 教授 (10049372)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Agent with collagen-dissolving ability / Sodium hypochlorite / Amalgam / Gallium alloy / Adhesion / Silver mirror reaction / Surface treatment / Marginal sealing / 次亜塩素酸カルシウム / 次亜塩素酸カリウム / 牛切歯 / サーフェイス・ロス / ハイドロキシアパタイト |
|---|
| Research Abstract |
New surface treatment method for promoting the bonding of direct metal restorative materials and tooth substance without cementing agent was applied. The silver mirror reaction of ammoniacal silver nitrate solution by the use of reducing power of aldehyde group in formaldehyde enabled on the tooth surface pretreated with acid and sodium hypochlorite having collagen-dissolving ability at the room temperature and short time. As the results of metaric silver, which plates out on the tooth surface, reacts with mercurry and/or gallium as a liquid metals in the direct metal restorative materials, direct metal restorative materials were fixed tightly without cementing agent on the tooth substance. Furthermore, there is no construction gap at the interface of direct metal restorative materials and tooth substance through metallic silver on the tooth surface.
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