| Title |
Special Edition : Symposium on Nano and Biomaterials ; Pore Size Effect on Mechanical Properties and Cell Growing Behavior of Continuously Porous t-ZrO2 Bodies |
| Authors |
(Asit Kumar Gain); (Ho Yeon Song); (Byong Taek Lee) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Keywords |
Porous t-ZrO2; Mechanical properties; Biocompatibility |
| Abstract |
The continuously porous t-ZrO2 bodies with different pore sizes (90 ㎛, 150 ㎛, 180 ㎛, 260 ㎛) were fabricated using a multi-pass extrusion process. As the sintering temperature increased from 1300 to 1500℃, the bending strength value of porous t-ZrO2 bodies (260 ㎛ pore size) increased and its maximum value was about 157 MPa. On the other hand, as increasing the pore size, the relative density and bending strength values were remarkably decreased. In the porous body having 90 ㎛ pore, the bending strength was about 450 MPa. Human osteoblast like MG-63 cells and osteoclast like Raw 264.7 cells were well grown and through the continuously pores as well as on the surface of the continuously porous t-ZrO2 bodies. The osteoblast cell was grown with spindle shape, condensed circular growth and three-dimensional network type. In contrast, the osteoclast cells were appeared with pebble stone type. |