Diana Diaconu Popa, Radu Comaneci, Monica Tatarciuc, Alice Murariu, Anca Mihaela Vitalariu<br>Influence of Silver Nanoparticles on Mechanical Properties of Dental Acrylic Resins

Diana Diaconu Popa, Radu Comaneci, Monica Tatarciuc, Alice Murariu, Anca Mihaela Vitalariu
Influence of Silver Nanoparticles on Mechanical Properties of Dental Acrylic Resins

Abstract:

The purpose of our research is to evaluate the effects of silver nanoparticles (AgNPs), incorporated for antimicrobial reasons in dental acrylic resins, on their mechanical properties. A total of 30 rectangular cross-section of heat curing and 30 rectangular of self-curing acrylic resin specimens were made, and divided into three groups for both resins (ten for each), according to the concentration of AgNPs solution (5%, 10%, and 20% vol.) incorporated into the monomer. One control group without AgNPs for each resin was prepared, as well. The dimensions of the AgNPs, were 20 nm. The specimens were tensile tested to determine the Young’s modulus, yield stress and tensile strength. The results indicate a reduction of the Young’s modulus, yield stress and tensile strength for both resins after AgNPs incorporation, the lowest values being recorded in 20% concentration specimens. Within the limitations of this study, the mechanical properties of acrylic resins were influenced by AgNPs concentration, but without jeopardizing their clinical use. Since this research was limited to one size of AgNps, even for different concentrations, further studies are necessary to evaluate the effects of AgNps size on mechanical properties. Keywords: acrylic resins, silver nanoparticles, mechanical properties, Young’s modulus, yields stress, tensile strength

Issue: 2016, Volume 67, Issue 11

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