Effect of Pore Size and Porosity on Cytocompatibility of Porous NiTi Alloys

来源 :2014xi`an Conference of International Society for Maxillofac | 被引量 : 0次 | 上传用户:syw2565
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Purpose: To study the effect of pore size and porosity on the mechanical and biological properties of porous NiTi alloy for orthopedic applications,and seeking the optimal pore size in terms of the cytocompatibility.Methods: Five porous NiTi alloy samples were fabricated with NH4HCO3 powder as a temporary space-holder and pore-size regulator of specified amounts.Microstructural surface characteristics and pore morphology were visualized using metallographic microscopy.Three groups of porous NiTi alloy were selected by compressive and three-point bending tests using a universal testing machine.hFOB 1.19 cells were cultured in the three groups,while commercial pure Ti(cp Ti)and tissue-cultured plates(TCPs)were used as control.Cytocompatibility was examined by cell adhesion,cell proliferation,alkaline phosphatase and scanning electron microscope.
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