| Project/Area Number |
12470424
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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 | Showa University |
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Principal Investigator |
MIYAZAKI Takashi Showa University, School of Dentistry, Professor, 歯学部, 教授 (40175617)
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| Co-Investigator(Kenkyū-buntansha) |
SASAKI Takahisa Showa University, School of Dentistry, Professor, 歯学部, 教授 (50129839)
LEE WonSik Showa University, School of Dentistry, Assistant prof, 歯学部, 助手 (40276605)
SHIBATA Yo Showa University, School of Dentistry, Assistant prof, 歯学部, 助手 (30327936)
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| Project Period (FY) |
2000 – 2001
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 2001: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2000: ¥8,700,000 (Direct Cost: ¥8,700,000)
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| Keywords | titanium / electric discharged machining / surface treatment |
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| Research Abstract |
We have been researching efficient manufacturing process of biomaterials using EDM(electric discharged machining). We studied the surface treatment of together with forming using EDM. At first, we used TCP(tricalcium phospate) and citric acid solution as electrolyte fluid, to form a titanium lod. But we couldn t obtain stable discharging. Then, we investigated MCPM(monocalciuin phosphate monohydryte) solution to obtain stable discharging at lower voltage then using TCP and citric acid solution. In addition, we could usethe higher ion concentration using MCPM solution. Therefore, we used a water through the ion exchange resin as control, with supplying calcium ion and prepared the MCPM solution with different concentration. A machining speed became lower as the ion concentration became higher and the surface was recognized as dull projections. The diffusion speed of plasma generated at the discharging became faster in ionized water than in the control. The XPS analysis proved calcium ions implanted into the titanium surface. Therefore, we suggested this study was useful development of biomaterials and methods of manufacturing processes.
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