期刊
DENTAL MATERIALS JOURNAL
卷 31, 期 5, 页码 815-820出版社
JAPANESE SOC DENTAL MATERIALS DEVICES
DOI: 10.4012/dmj.2012-065
关键词
Three-dimensional printing; Porous titanium implant; Mechanical properties; Sinter
资金
- Natural Science Foundation of Shanghai [09ZR1416600]
- Shanghai Leading Academic Discipline Project [T0202, S30206]
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 degrees 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.
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