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. 2019 Mar 1;11(3):e275-e281.
doi: 10.4317/jced.55522. eCollection 2019 Mar.

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

Zahra Jowkar  1 , Mohammad Jowkar  2 , Fereshteh Shafiei  3
Affiliations

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

Zahra Jowkar et al. J Clin Exp Dent. .

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. Key words:Glass ionomer cement, mechanical properties, micro-shear bond strength, silver nanoparticle.

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Conflict of interest statement

Conflict of interest statement:The authors have declared that no conflict of interest exist.

Figures

Figure 1
Figure 1
The wrapped stainless steel ligature around the base of the GIC micro-cylinder for measurement of µSBS.
See this image and copyright information in PMC

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