PMID: 15348432Sep 7, 2004Paper

Apatite-forming ability of glass-ceramic apatite-wollastonite - polyethylene composites: effect of filler content

Journal of Materials Science. Materials in Medicine
J A JuhaszT Nakamura

Abstract

The bioactivity of a range of glass-ceramic apatite-wollastonite (A-W) - polyethylene composites (AWPEXs) with glass-ceramic A-W volume percentages ranging from 10 to 50, has been investigated in an acellular simulated body fluid (SBF) with ion concentrations similar to those of human blood plasma. The formation of a biologically active apatite layer on the composite surface after immersion in SBF was demonstrated by thin-film X-ray diffraction (TF-XRD) and field-emission scanning electron microscopy (FE-SEM). An apatite layer was formed on all the composites, with the rate of formation increasing with an increase in glass-ceramic A-W percentage. For composites with glass-ceramic A-W filler contents >or=30 vol %, the apatite layer was formed within 12 h of immersion, which is a comparable time for apatite formation on monolithic glass-ceramic A-W. Inductively coupled plasma atomic emission spectroscopy (ICP-AES) demonstrated that the apatite formation on AWPEX samples with 50 vol % filler content occurred in a manner similar to that seen on pure glass-ceramic A-W, in that the calcium, silicon, and magnesium ion concentrations increased and, conversely, a decrease was observed in the phosphate ion concentration. These results in...Continue Reading

Citations

Nov 24, 2006·Journal of Materials Science. Materials in Medicine·Wolfram HölandUrsula Graf-Hausner
Aug 12, 2015·Journal of Functional Biomaterials·Sergey V Dorozhkin
Jul 2, 2010·Journal of the Royal Society, Interface·K E Tanner
Feb 6, 2007·Journal of Materials Science. Materials in Medicine·F BalasT Nakamura
Aug 19, 2017·Expert Review of Medical Devices·Arnold PopkovDmitry Popkov

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