2012 Fiscal Year Final Research Report
Development of a sophisticated dental implant based on biomimetic engineering
| Project/Area Number |
23659910
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Dental engineering/Regenerative dentistry
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ISHIHATA Hiroshi 東北大学, 病院, 助教 (40261523)
NEMOTO Eiji 東北大学, 大学院・歯学研究科, 准教授 (40292221)
KANAYA Sousuke 東北大学, 大学院・歯学研究科, 助教 (80375097)
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| Project Period (FY) |
2011 – 2012
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| Keywords | 歯科インプラント / 生体模倣(biomimetics) / スキャフォールド |
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| Research Abstract |
This study was aimed to develop the new fabrication method that can fabricate an ideal surface structure on implant fixture to control the microscopic surface topography suitable for osseointegration and bone regeneration. For this purpose, we used “micro-dimple imprint method" by applying honeycomb films. We fabricated the regularly arrayed micro-dimple structure on the mirror-like finished surface of Type 1 Ti plate masked with honeycomb film by wet-etching. After the etching, we obtained the regularly arrayed dimples on Ti surface with identical diameter and pitch as a honeycomb mesh structure of the mask. Human periodontal ligament (hPDL) or STRO-1^+dental follicle (STRO-1^+DF) cells were seeded and culture on the honeycomb-fabricated and control Ti. hPDL/ STRO-1^+DF cells showed stimulated proliferation and a unique forms on the fabricated Ti, that is completely different from the uniformed pattern of cell behavior on control Ti surface, suggesting that our newly developed micro-dimple imprint method is useful for the processing of implant fixture surface and fabrication the surface topography at a μm order.
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