Setting time, mechanical and adhesive properties of magnesium oxide nanoparticles modified glass-ionomer cement

Abstract

Nanoparticle modifications of glass-ionomer cement are interesting research subjects. This study investigated the effect of MgO nanoparticles on the setting time, compressive and diametral tensile strength, and adhesive properties of glass-ionomer cement. A conventional GIC was modified by the incorporation of MgO nanoparticles at 1%, 2.5%, 5%, and 10% (w/w) ratios with an unmodified GIC used as the control group. The data were analysed using a one-way analysis of variance (ANOVA) and Tukey's HSD test (p 0.05).Within the limitations of this study, the current findings suggest that modifying GICs by incorporating MgO nanoparticles up to 2.5% (w/w) could be a promising restorative material for clinical dental applications. Keywords: Glass-ionomer cement, MgO nanoparticles, Compressive strength, Diametral tensile strength, Setting time, Shear bond strength