International Journal of Health and Allied Sciences


Background: To create bioactive zinc phosphate (ZP) cement with better compressive strength, solubility, sorption, and pH compared to conventional zinc phosphate cement by adding novel sodium-free bioactive glass (BAG) to it.

Materials and Methods: Two test groups were created by mixing BAG in concentrations of 5 wt% and 10 wt% with ZP cement. The control group consisted of conventional ZP cement. Compressive strength (n=90), solubility, and sorption (n=30) were tested. The pH meter was used to measure the pH of the liquid medium (n=30). All tests were conducted for multiple time periods over 28 days. Fourier Transform Infrared Spectroscopy (FTIR) was used to evaluate bioactivity between ranges of 4000-550 cm-1 and 1500-550 cm-1. Repeated measures ANOVA and independent sample t-tests were used to statistically analyze the results

Results: The study showed that the 10 wt% test group had the highest compressive strength and the lowest water solubility. The 5 wt% group had the highest rise in pH. Both the 5 wt% and 10 wt% concentrations of BAG demonstrated increased water sorption. FTIR showed the presence of the P-O mode and proved the development of a hydroxyl carbonated apatite (HCA) layer.

Conclusion: The addition of sodium-free BAG to ZP cement significantly increased compressive strength, solubility, and pH. The sorption was high for the cement containing bioactive glass. The test groups showed positive results for bioactivity. Key-words: Bioactivity, Compressive Strength, Sodium-free Bioactive Glass, Solubility, Sorption, Zinc Phosphate Cement.