The effect of Sr and Mg substitutions on the mechanical properties and solubility of the fluorapatite ceramics for biomedical applications

Abstract The ionic substitutions play important role in the modifications of the biological apatites. Recently, the attention has been focused on the co-doping effects of additives on the functional properties of apatite based biomaterials. Under a research work for which the results are presented here, the dense samples of fluorapatites: Ca 10 (PO 4 ) 6 F 2 and Ca 8 MgSr(PO 4 ) 6 F 2 were produced after sintering at a temperature of 1250 °C for 6 hours in air. The XRD, IR and Raman spectrometry results show a high crystallinity of the fluorapatite and strontium-magnesium-doped fluorapatites. The results demonstrate the stability of structural and mechanical properties of fluorapatites after immersion tests in saline and buffer solutions. The durability of mechanical properties and biocompatibility of Ca 10 (PO 4 ) 6 F 2 and Ca 8 MgSr(PO 4 ) 6 F 2 fluorapatites make these materials highly attractive for biomedical application.