| Project/Area Number |
21791842
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Conservative dentistry
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
KAZAMA Ryuunosuke Tokyo Medical and Dental University, 大学院・医歯学総合研究科, 非常勤講師 (50387429)
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|---|
| Project Period (FY) |
2009 – 2010
|
| Project Status |
Completed (Fiscal Year 2010)
|
| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | CAD / CAM / 破折強度 / 表面処理 / セラミックス / CAD/CAM / コンポジットレジン / 接着 |
|---|
| Research Abstract |
24CAD/CAM ceramic inlay was fabricated, and their inside surface was treated with either 37%phosphoric acid, 5% hydrofluoric acid or water (n=8, each). All specimens were luted with a resin cement, and fracture load values (N) were measured. Hydrofluoric acid increased the surface roughness, but did not increase the fracture resistance. 40 plates from four brands of ceramic materials were either surface-polished or overglazed (n=10), and bonded to dentin using a resin cement, and failure load (N) were measured. It was concluded that overglazed and polished surfaces produced similar compressive fracture strengths irrespective of the machinable ceramic material tested, and that fracture strength was material-dependent.
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