The Mechanical Properties of Bone Tissue Engineering Scaffold Fabricating Via Selective Laser Sintering

摘要

Performance of bone tissue depends on porous scaffold microstructures with specific porosity characteristics that influence the behavior of the ingrown cells. The mechanical properties of porous tissue scaffolds are important for their biomechanical tissue engineering application. In this study, the composite materials powder was developed for the selective laser sintering process, and the parameters of selective laser sintering were optimized. With the aim of evaluating the influence of porosity on mechanical properties, we have studied the load limits for three specimens of scaffolds which have different porosity. Young's modulus was computed by determining the slope of the stress - strain curve along the elastic portion of the deformation. In addition, the final element analysis (FEA) module of UG NX4 was used to analyze these scaffolds. The results showed that the bone tissue engineering scaffolds were fabricated by SLS technology have good mechanical properties, which have good potential for tissue engineering applications.