Mechanical and dentin bond strength properties of the nanosilver enriched glass ionomer cement.

BACKGROUND

The aim of this study was to investigate the mechanical properties and dentin microshear bond strength of a conventional glass ionomer cement (GIC) compared to GIC supplemented with silver nanoparticles (SNPs) at 0.1% and 0.2% (w/w).

MATERIAL AND METHODS

SNPs were incorporated into a conventional GIC at 0.1% and 0.2% (w/w). The unmodified GIC was used as the control group. Compressive strength, flexural strength, and micro-shear bond strength (µSBS) to dentin were evaluated using a universal testing machine. Surface microhardness was determined using a Vickers microhardness tester. The data were analyzed using one-way analysis of variance (ANOVA) and Tukey's test.

RESULTS

GICs containing 0.1% and 0.2% (w/w) SNPs significantly improved compressive strength, surface microhardness, and dentin µSBS compared to the unmodified GIC (<0.05). A significant increase in the flexural strength was found for the GIC containing 0.2% (w/w) SNPs (<0.05). However, the GIC containing 0.1% (w/w) SNPs did not affect flexural strength.

CONCLUSIONS

GIC supplemented with SNP is a promising material for restoration because of its improved mechanical and bond strength properties. Therefore, it may be suggested for use especially in higher stress-bearing site restorations. Glass ionomer cement, mechanical properties, micro-shear bond strength, silver nanoparticle.