Fabrication of Bio-ceramic Bone Model

doi:10.3724/SP.J.1077.2012.00348

Abstract

Abstract:

The process parameters and raw materials of current commercial rapid prototyping (RP) machines are limited, thus the bone model is not easily to fabricate. In order to overcome these disadvantages, a self-developed rapid prototyping machine was used to produce bone model. In this work, the hydroxyapatite (HA), silica sol and suspending agent were mixed as raw materials. By adjusting the suitable process parameter, the bio-ceramic green parts could be formed, and then the specimen green parts were sintered at 1200℃, 1300℃, 1400℃, respectively. The shrinkage, surface roughness and compression strength were tested. Furthermore, the cell activities of the bone model were investigated through the osteoblast MG63 cells culture. The results showed that the green part sintered at 1200℃ exhibits optimum properties with greatly improved compression strength and surface roughness of R_a (12.04 μm), which is suitable for the growth of the osteoblast MG63.

Key words: bio-ceramic, bone model, rapid prototyping, laser

CLC Number:

TQ174

LIU Fwu-Hsing, CHEN Ssu-Han. Fabrication of Bio-ceramic Bone Model[J]. Journal of Inorganic Materials, 2012, 27(4): 348-352.

Figures/Tables 7

Fig. 1 A rapid prototyping machine of selective laser curing

Fig. 2 Schematic of the experimental processes

Fig. 3 Forming range of the selective laser curing

Fig. 4 A finished part of femur bone model

Fig. 5 SEM surface image of femur bone model

Fig. 6 Effect of sintering temperatures on the shrinkage (a), surface roughness (b) and compression strength (c) of specimen

Fig. 7 Optical density of osteoblasts cells cultured for different times

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