2026-05-07T07:38:41Z https://www.eurjchem.com/index.php/eurjchem/oai

oai:ojs.www.eurjchem.com:article/1019 2014-09-30T03:41:50Z eurjchem:ART driver

Bactericidal properties of experimental dental composites based on dimethacrylate resins reinforced by nanoparticles Lukomska-Szymanska, Monika Magdalena Kleczewska, Joanna Bielinski, Dariusz Marian Jakubowski, Witold Sokolowski, Jerzy Silver Hardness Depth of cure Nanoparticles Composite resins Antibacterial agents The aim of this study was to examine the possibility of replacing a part of the filler in experimental dental composites by nanoparticles with antibacterial potential. Experimental dental composites containing silver nanoparticles deposited on titanium and silica dioxide of different size were analyzed in terms of antibacterial properties. The depth of cure and mechanical properties of composite surface layer were examined. Bactericidal properties were tested according to the LIVE/DEAD cell viability assay. The mechanical properties were determined with a NanoTest 600 instrument. Composites containing silver nanoparticles deposited on titanium dioxide and nanosilica carrier exhibit the strongest antibacterial properties. High content of TiO2 causes strong absorption of light irradiation, which makes their curing process more difficult. Hardness of surface layer increases but the deeper layers of the samples remain uncured. Composites containing nanosilver on titanium dioxide and nanosilica carrier exhibit the highest antibacterial activity. High content of TiO2 causes strong absorption of light irradiation impairing their curing process. The presence of nanosilver changes composite color causing limited light penetration and lower surface hardness. Atlanta Publishing House LLC 2014-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1019 10.5155/eurjchem.5.3.419-423.1019 European Journal of Chemistry; Vol. 5 No. 3 (2014): September 2014; 419-423 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1019/pdf_1019