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

• Zahra Jowkar ^[1] ; Mohammad Jowkar ^[2] ; Fereshteh Shafiei ^[1]
  1. [1] Shiraz University of Medical Sciences

     Shiraz University of Medical Sciences

     Irán

     
  2. [2] Isfahan University of Medical Sciences

     Isfahan University of Medical Sciences

     Irán

     
• Localización: Journal of Clinical and Experimental Dentistry, ISSN-e 1989-5488, Vol. 11, Nº. 3 (March ), 2019, págs. 275-281
• Idioma: inglés
• Enlaces
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• Resumen

  • 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).

    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.

    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.

    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.