Bone-Like Apatite-Forming Ability of Ca₃(PO₄)₂-CaMg(SiO₃)₂ Ceramics in Simulated Body Fluid

Abstract:

In this study a ceramic composite with nominal composition 40 wt% Ca3(PO4)2 – 60 wt% CaMg(SiO3)2 was obtained by solid state sintering of compacts of both synthetic fine powders. The ceramic composite showed a fine grained and homogeneous microstructure consisting of CaMg(SiO3)2 and b-Ca3(PO4)2 grains. The results of X-ray diffraction and scanning electron microscopy demonstrated that, during soaking in SBF, the grains of β-Ca3(PO4)2 dissolved preferably than those of CaMg(SiO3)2, leaving a porous surface layer rich in CaMg(SiO3)2. Subsequently, partial dissolution of the remaining CaMg(SiO3)2 occurred and the porous surface of the b-Ca3(PO4)2-CaMg(SiO3)2 ceramic became coated by a bone-like apatite layer after 7 days in SBF.

• Periodical: Key Engineering Materials (Volumes 396-398)
• Pages: 103-106
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.396-398.103
• Online since: October 2008
• Authors: R. García Carrodeguas, E. Córdoba, Antonio de Aza, S. De Aza, P. Pena
• Keywords: Apatite, Bioactivity, Ceramic, Diopside, Simulated Body Fluid (SBF), Tricalcium Phosphate

References

[1] L.L. Hench: J. Am. Ceram. Soc. Vol. 74 (1991), p.1487.

[2] P.N. De Aza, A.H. De Aza and S. De Aza: Bol. Soc. Esp. Ceram. V. Vol. 44 (2005), p.135.

DOI: 10.3989/cyv.2005.v44.i3.382

[3] P.N. De Aza, Z.B. Luklinska and M. Anseau: J. Biomed. Mater. Res. Part B: Appl. Biomater. Vol. 73B (2005), p.54.

[4] M. Kamitakahara, C. Ohtsuki, Y. Kozaka, S. Ogata, M. Tanihara and T. Miyazaki: J. Ceram. Soc. Japan Vol 114 (2006), p.82.

DOI: 10.2109/jcersj.114.82

[5] T. Sata: Bull. Chem. Soc. Japan Vol. 32 (1959), p.105.