Abstract
Tricalcium phosphate (TCP) is recognized as a promising bone replacement material due to its high bioactivity and resorbable properties. To mimic biological apatites, incorporation of magnesium (Mg) in TCP was proposed. Mg-substituted TCP (β-TCMP) and β-TCP dense tablets were obtained by pressing and sintering at 1,000°C Mg-substituted calcium deficient apatite (Mg-CDA) and commercial TCP, respectively. The materials were characterized using X-ray diffraction, infrared spectroscopy and electron microscopy. Human osteoblast cells (SaOs2) were seeded onto the sintered tablets for 4 h, 24 h and 7 days. Results showed that Mg-CDA was completely transformed into β-TCMP. Moreover, β-TCMP stimulated adhesion and proliferation of human osteoblast cells. Consequently, the magnesium incorporation on calcium deficient apatites followed by sintering at 1,000°C seems to be a useful path to obtain biocompatible and non cytotoxic dense tablets with TCP structure with potential application on bone engineering.
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Acknowledgments
The authors acknowledge the financial support given by CNPq, CAPES and FAPERJ. We thank J. C. Araújo, V. C. A. Moraes and E. L. Moreira for Rietveld analyses contribution and the Chemistry Institute of the Federal University of Rio de Janeiro for the FTIR analyses.
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Sader, M.S., LeGeros, R.Z. & Soares, G.A. Human osteoblasts adhesion and proliferation on magnesium-substituted tricalcium phosphate dense tablets. J Mater Sci: Mater Med 20, 521–527 (2009). https://doi.org/10.1007/s10856-008-3610-3
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DOI: https://doi.org/10.1007/s10856-008-3610-3