Antibacterial Efficiency of Zn, Mg and Sr Doped Bioactive Glass for Bone Tissue Engineering
Abstract
Bioactive glasses are inorganic biomaterials that have been used successfully in bone tissue engineering and in dentistry as filling materials. But due to poorer mechanical strength the bioactive glasses have limited application in load-bearing positions. If efforts are made to increase material strength, their bioactivity gets decrease. To comprehend the optimal toning between biological and mechanical properties, we aim to develop the new nano bioactive glass using simple sol-gel method having a composition of 50%SiO2-40%CaO-5%P2O5-2%ZnO-2%MgO-1%SrO (mol%) with three different bivalent metal ions (Zn2+, Mg2+ and Sr2+). The structural morphology, crystallinity, physical and chemical behavior of the prepared bioglass ceramics were analyzed through XRD, N2-adsorption measurements, FTIR, FESEM with EDS and HR-TEM. The bioactivity of the sample was analyzed in Dulbecco's modified eagle's medium solution for ten days. The synthesized nano bioglass-ceramic shows the apatite layer formation which was confirmed through XRD and FTIR and show anti-bacterial properties for the four well-known pathogens/microorganism Bacillus cereus, Candida albicans, Escherichia coli and Staphylococcus aureus.
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