| Project/Area Number |
15H02310
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making/Resorce production engineering
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| Research Institution | Nagoya University |
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Principal Investigator |
OKIDO Masazumi 名古屋大学, 未来材料・システム研究所, 教授 (50126843)
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| Co-Investigator(Kenkyū-buntansha) |
黒田 健介 名古屋大学, 未来材料・システム研究所, 准教授 (00283408)
土屋 周平 名古屋大学, 医学部附属病院, 助教 (20569785)
日比 英晴 名古屋大学, 医学系研究科, 教授 (90345885)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2017: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2015: ¥23,270,000 (Direct Cost: ¥17,900,000、Indirect Cost: ¥5,370,000)
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| Keywords | インプラント / チタン合金 / 生体活性 / 骨伝導性 / 親水性 / タンパク質接着 / 動物実験 / 生体材料 / 表面階層構造 / 表面処理 / 骨電導性 |
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| Outline of Final Research Achievements |
Surface modification of various implant materials was carried out in order to deepen the control of implant surface hierarchical structure. Nb, Ta, Ti-Nb-Ta-Zr and so on were implanted in the rat tibia for 2 weeks, and the osteoconductivity was evaluated from the amount of hard tissue formation on the surface. It is found that it can be arranged by water drop contact angle without depending on the kind of material. With the water drop contact angle of 65 degree as the boundary, osteoconductivity improved as more hydrophilic or hydrophobic. Protein adsorption was strongly dependent on surface hydrophilicity as well as osteoconductivity.
On the other hand, it succeeded in making the surface hydrophilic by surface modification of various plastics. It was clarified that polyether ether ketone (PEEK) with super-hydrophilicity had high osteoconductivity.
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