2010 Fiscal Year Final Research Report
Development of New Nano-Composite Ceramics Suitable for All-Ceramic Restorations
| Project/Area Number |
20592262
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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 |
Prosthetic dentistry
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| Research Institution | Osaka University |
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Principal Investigator |
NAKAMURA Takashi Osaka University, 大学院・歯学研究科, 准教授 (20198211)
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| Co-Investigator(Kenkyū-buntansha) |
WAKABAYASHI Kazumichi 大阪大学, 臨床医工学融合研究教育センター, 特任講師 (50432547)
SEKINO Tohru 東北大学, 多元物質科学研究所, 准教授 (20226658)
YATANI HIROFUMI 大阪大学, 大学院・歯学研究科, 教授 (80174530)
SOUMURA Taiji 大阪大学, 大学院・歯学研究科, 教授 (10154692)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 歯科補綴学一般 |
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| Research Abstract |
The aim of this study was to compare the degradation of a new silica doped Y-TZP material with that of conventional Y-TZP by using accelerated aging tests. The results of the accelerated tests revealed that after 50 hours of aging, the conventional Y-TZP samples had damaged surfaces that were weakened by 50 to 60%, while the silica-doped Y-TZP samples were only weakened by less than 20%. The monoclinic content of the conventional Y-TZP samples increased substantially to 62.7%, however, that of silica-doped Y-TZP samples was 18.9% after 5 hours of aging.
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