Fabrication of porous titanium implants by three-dimensional printing and sintering at different temperatures
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概要
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This study evaluated the feasibility of using three-dimensional printing (3DP) to fabricate porous titanium implants. Titanium powder was blended with a water-soluble binder material. Green, porous, titanium implants fabricated by 3DP were sintered under protective argon atmosphere at 1,200, 1,300, or 1,400°C. Sintered implant prototypes had uniform shrinkage and no obvious shape distortion after sintering. Evaluation of their mechanical properties revealed that titanium prototypes sintered at different temperatures had elastic modulus of 5.9-34.8 GPa, porosity of 41.06-65.01%, hardness of 115.2-182.8 VHN, and compressive strength of 81.3-218.6 MPa. There were significant differences in each type of these data among the different sintering temperatures (p<0.01). Results of this study confirmed the feasibility of fabricating porous titanium implants by 3DP: pore size and pore interconnectivity were conducive to bone cell ingrowth for implant stabilization, and the mechanical properties matched well with those of the human bone.
- 2012-09-01
著者
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Sun Jian
Department Of Cardiology The First Affiliated Hospital College Of Medicine Zhejiang University
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Sun Jian
Department Of Prosthodontics Ninth People's Hospital Shanghai Jiao Tong University School Of Medicine Shanghai Key Laboratory Of Stomatology
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Xiong Yaoyang
Department Of Prosthodontics Ninth People's Hospital Shanghai Jiao Tong University School Of Medicine Shanghai Key Laboratory Of Stomatology
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Qian Chao
Department Of Prosthodontics Ninth People's Hospital Shanghai Jiao Tong University School Of Medicine Shanghai Key Laboratory Of Stomatology
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