| 초록 |
Porous titanium(Ti) have been widely used for application of the implants replacing hard tissues or their functions on account of their ability to promote implant fixation via bone ingrowth in pores, due to their excellent mechanical properties and superior biocompatibility. In this study, Ti scaffolds having a uniform porous structure were fabricated by indirect method using Fused Deposition Modeling (FDM), which is one of the Solid Free Form (SFF) techniques. Then, mechanical properties of two kinds of porous architectures, which is isotropic or anisotropic, were evaluated and the micro arc oxidation (MAO) surface treatment was performed to improve biocompatibility. The microstructure, porosity, compressive strength were measured and in-vitro & in-vivo test was performed for evaluation of osseointegration. As a result, the compressive strength was 129 ± 10 MPa in anisotropic structure and 86 ± 7 MPa in isotropic structure. The porosity was 71vol%, 74vol% respectively. Also, the excellent of biocompatibility was verified through in-vitro & in-vivo test. Thus, porous titanium scaffolds are able to be designed variously in accordance with their intended use. |
