3D打印多孔钛合金孔隙结构对骨诱导性能影响的研究进展

Research progress of the effects of pore structure of 3D printed porous titanium alloy on bone induction properties

多孔钛合金具有密度低、强度高、耐腐蚀等特点,是目前骨科领域广泛应用的骨替代材料。3D打印技术在材料设计上的高度精确性和可控性,使多孔钛合金具有更加理想的骨诱导性能和足够的力学强度,从而为成骨细胞的长入提供更加优良的力学属性及生物相容性。本文介绍多孔钛合金的机械性能,综述3D打印多孔钛合金骨替代材料的孔隙尺寸、孔隙率、孔隙形状、表面形貌对骨诱导性能造成的影响,同时对多孔钛合金3D打印植入物的发展趋势进行展望。

As a kind of widely used bone substitutes in orthopaedic field,porous titanium alloy has the characteristics of low density,high strength and corrosion resistance.Because of the high accuracy and controllability of 3 D printing technology in material design,3 D printed porous titanium alloy has more ideal bone induction property and sufficient mechanical strength which providing better mechanical properties and biocompatibility for the growth of osteoblasts.In this paper,the mechanical properties of porous titanium alloy were introduced,the influences of pore size,porosity,pore shape and surface morphology of 3 D printed porous titanium alloy substitute material on bone-induced performance were reviewed,at the same time,the development trend of 3 D printed porous titanium alloy implants were prospected.