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1 2013

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In vitro biological activity comparison of some hydroxyapatite-based composite materials using simulated body fluid

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Czikó M. , Bogya E.-S. , Barabás R. , Bizo L. , Stefan R.

Open Chemistry

2013

tom 11

nr 10

1583-1598

Hydroxyapatite composites are the main biomaterials used for metal implant coatings. Their in vitro study is very important. That is why their behavior was monitored in simulated body fluid (SBF), which is a solution with ion concentrations and pH value similar to those of human blood plasma. Silica, chitosan and gelatin-doped hydroxyapatite-based biomaterials were studied in SBF; the samples were characterized pre-, during and post-SBF immersion using infra-red, scanning and transmission electron spectroscopy and X-ray diffraction methods. The solubility of materials in SBF was determined, and the variation of Ca2+ and phosphorus concentration was also recorded during SBF experiments. The results were compared and their in vitro biological activity was determined. [...]