Effect Of Nano-Bioactive Glass On Flexural Strength And Antimicrobial Activity Of Resin-Modified Glass Ionomer Cement Containing 58S Nano-Bioactive Glass

Introduction: Bioactive glass (BAG) is increasingly used in dentistry, aiming to provide superior mechanical properties, optimal chemical stability, and favorable antimicrobial activity the oral environment. This study aimed measure flexural strength (FS) of resin-modified ionomer (RMGI) cement containing 58S nano-BAG. Materials Methods: In this vitro study, 0wt (Weight) %, 10wt%, 20wt%, 30wt% nano-BAG particles were added RMGI powder groups 1 4, respectively (n=10). Forty specimens fabricated metal molds (2 x 25 2 mm), their FS was measured by using a three-point bending test at crosshead speed 0.5 mm/min. The antibacterial materials against Streptococcus mutants assessed disc diffusion test. addition abovementioned experimental groups, one control group (n=10) 100% BAG also considered. Data analyzed one-way ANOVA Tukey’s Results: mean (± standard deviation) 38.71±8.84, 43.61±17.34, 45.62±15.89, 54.71±14.25 MPa respectively. No significant difference noted among (P=0.06). A found diameter growth inhibition zone (P<0.05), 4 showed minimal bacterial growth. Conclusion: 20wt% did not significantly change but inhibited