20.500.12556/DiRROS-17590 Antibacterial effect of polymethyl methacrylate resin base containing TiO2 nanoparticles Restorations in dentistry must reproduce the aspect of the patient’s natural teeth and require non-toxicity, biocompatibility, and good mechanical properties in order to last longer. Restorations are permanently in contact with microbes that can adhere to and form biofilms. The purpose of this study was to determine the adhesion extent of Streptococcus mutans to polymethyl methacrylate (PMMA) resin base containing TiO2 nanoparticles. To understand the adhesion of Streptococcus mutans on the modified resin-based surfaces, the following surface properties were measured: the roughness, contact angle, zeta potential and CIE color parameters. Evaluation of tensile stress performance in TiO2 modified PMMA showed that the maximum tensile stress of the modified PMMA resin decreases with an increasing amount of TiO2 nanoparticles. The increasing amount of TiO2 decreases the roughness and causes contact angles in the border between hydrophilic and hydrophobic surfaces. All the studied surfaces are negatively charged and added TiO2 tends to increase the zeta potential. The addition of TiO2 nanoparticles increases the lightness and decreases the intensity of the red and yellow color. The increasing addition of TiO2 nanoparticles into PMMA increases the morphological change of bacterial cells. bacterial adhesion Streptococcus mutans polymethyl methacrylate resin TiO2 surface properties bakterijska adhezija Streptococcus mutans polimetil metakrilatna smola TiO2 površinske lastnosti true false true MDPI AG Angleški jezik Slovenski jezik © 2022 by the authors. Licensee MDPI, Basel, Switzerland. Neznano 2023-12-20 08:12:34 2023-12-20 08:12:34 2023-12-21 03:38:27 0000-00-00 00:00:00 2022 0 0 Nasl. z nasl. zaslona; Soavtorji: Anže Abram, Aleksander Učakar, Ivo Godina, Franc Rojko, Roman Štukelj, Andrijana Sever Škapin, Rajko Vidrih, Olivera Dolic, Valentina Veselinovic, Klemen Bohinc; Opis vira z dne 16. 11. 2022; Članek št.: 1757; str. 1-17 no. 11 Vol. 12 2022 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2022-11-16 577:620-1/.2 2079-6412 10.3390/coatings12111757 129678851 https://www.mdpi.com/2079-6412/12/11/1757 1 c4b69e6a-9efe-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23912 RAZ_Zore_Anamarija_2022.pdf RAZ_Zore_Anamarija_2022.pdf 1 0B1E958B5B545653520629504D606B09 87fc50ab9c466cf3cd06565f46c1ff8d26ead5c0893956ea6c2cfbb7fe52df63 1809f765-9eff-11ee-9ccb-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23913 Zavod za gradbeništvo Slovenije 0 0 0