Mechanical and Dentin Bond Strength Properties of the Nanosilver Enriched Glass Ionomer Cement Publisher



Jowkar Z¹ ; Jowkar M² ; Shafiei F¹
Source: Journal of Clinical and Experimental Dentistry Published:2019

Abstract

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 (p < 0.05). A significant increase in the flexural strength was found for the GIC containing 0.2% (w/w) SNPs (p < 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. © Medicina Oral S. L. C.I.F. B 96689336 - eISSN: 1989-5488.