Abstract
Porous <TEX>${\beta}-tricalcium$</TEX> phosphate <TEX>$({\beta}-TCP)$</TEX> bioceramic was fabricated by pressureless sintering using commercial HAp and different volume percentages of PMMA powders (30-60 vol.%). The range of spherical pore size was about <TEX>$200-250\;{\mu}m$</TEX> in diameter. By increasing the PMMA content, the number of pores and their morphology were dramatically changed as well as decreased the material properties. In case of using 60 vol.% PMMA content, network-type pores were found, due to the necking of the PMMA powders. The values of relative density, elastic modulus, bending strength and hardness of the 60 vol.% PMMA content sample, sintered at <TEX>$1500^{\circ}C$</TEX>, were about 46%, 22.2 GPa, 5MPa and 182 Hv respectively. Human osteoblast-like MG-63 cells and osteoclast-like Raw 264.7 cells were well grown and fully covered all of the porous <TEX>${\beta}-TCP$</TEX> bodies sintered at <TEX>$1500^{\circ}C$</TEX>.
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