2012 Fiscal Year Final Research Report
Establishment of the surface treatment applied by silicate techniques to zirconia ceramics and application of the treatment to resin materials for veneering
| Project/Area Number |
22592192
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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 |
Dental engineering/Regenerative dentistry
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| Research Institution | Showa University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Masato 昭和大学, 教養部, 准教授 (50277844)
HOTTA Yasuhiro 昭和大学, 歯学部, 講師 (00245804)
MIYAZAKI Takashi 昭和大学, 歯学部, 教授 (40175617)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 歯科医用工学 / 再生歯学 |
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| Research Abstract |
The aim of this study was to investigate the highest bonding strength and superior bonding durability to partially stabilized tetragonal zirconia (Y-TZP) for coping material of dental prostheses.The surface of Y-TZP were treated by no modification (NMD), sandblasting by alumina particles (ASB), and tribochemical (TBC) treatment+ silane coupling agent(SLC). Two phosphate acid ester monomers (AZ: AZ primer, EP: Epricord) were applied to each surface modification followed by application of resin-based luting cement (Rely-X ARC). Bonding specimens were placed in deionized water at 37℃ and stored for 24 h. The other groups were subjected to 30,000 cycles of a thermal stress for the durability test. Shear bond tests were done using a universal testing machine at 1 mm/min. Shear bond strengths of combination treatments using EP and AZ on TBC treatment after thermal stress showed no significant difference (p>0.05) compared with those of storage after 24 h. Combination treatment using phosphoric acid ester monomer, especially for EP, could achieve a durable bond, and was suitable surface treatment for enhancement of bonding characteristics to Y-TZP.
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