2009 Fiscal Year Final Research Report
New electrochemical approach for evaluation of corrosion behavior of dental alloy
| Project/Area Number |
19390500
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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 | 一般 |
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| Research Field |
補綴理工系歯学
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| Research Institution | Tokyo Dental College |
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Principal Investigator |
ODA Yutaka Tokyo Dental College, 歯学部, 教授 (00085838)
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| Co-Investigator(Kenkyū-buntansha) |
TAKEMOTO Shinnji 東京歯科大学, 歯科理工学講座, 講師 (70366178)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 歯科用合金 / 腐食 / 電気化学 / チタン / タンパク質 |
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| Research Abstract |
Although well known for their superior resistance to corrosion, titanium and titanium alloys are unable to withstand discoloration in clinically. This study revealed the corrosion behavior of titanium alloys with electrochemical measurement, discoloration, dissolution, EQCM and EIS analysis. The results confirm that corrosion of titanium takes place in acidulated fluoride- or alkaline peroxide-containing solution, and discoloration mainly results from peroxide-induced oxidation in acidulated peroxide containing solution. The addition of chromium suppresses corrosion of titanium alloys.
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