Evaluation of Sr- and/or Mg-Containing Hydroxyapatite Behavior in Simulated Body Fluid

Liga Stipniece; Kristine Salma-Ancane; Andris Putnins; Liga Berzina-Cimdina

doi:10.4028/www.scientific.net/KEM.631.61

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 631Evaluation of Sr- and/or Mg-Containing...

Evaluation of Sr- and/or Mg-Containing Hydroxyapatite Behavior in Simulated Body Fluid

Abstract:

The main goal of this study was to evaluate the behavior of Sr- and/or Mg-containing hydroxyapatite (HAp) bioceramics in simulated body fluid (SBF). Sr-and/or Mg-containing HAp powders were synthesized by modified wet chemical precipitation method. Sr-and/or Mg-containing HAp bioceramics were prepared by uniaxial pressing of the precipitated powders and subsequent sintering at 1100 °C for 1 h. The synthesis products were characterized in terms of chemical, phase and molecular composition. Influence of the substitutions on thermal stability, morphology and microstructure of the HAp products were evaluated. Results suggest that incorporation of Sr (up to 1.45 wt.%) in HAp structure induced an increasing of particle sizes, but incorporation of Mg (up to 1.05 wt.%) led to a reduction of particle sizes of the HAp powders. The ability to simultaneously release bioactive ions and the apatite-formation ability of the Sr-and/or Mg-containing HAp bioceramics were evaluated through immersing the samples in SBF for different time periods. Ca ions release and apatite-formation ability on the surfaces of the Sr-and/or Mg-containing HAp bioceramics in SBF depends on Sr and/or Mg concentration in the samples.

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Key Engineering Materials (Volume 631)

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61-66

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https://doi.org/10.4028/www.scientific.net/KEM.631.61

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November 2014

Authors:

Liga Stipniece*, Kristine Salma-Ancane, Andris Putnins, Liga Berzina-Cimdina

Keywords:

Bioceramic, Hydroxyapatite (HA), Magnesium Ions, Simulated Body Fluid, Strontium Ions

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