Antibacterial effect of polymethyl methacrylate resin base containing ▫$TiO_2$▫ nanoparticles

Zore, Anamarija (author), Abram, Anže (author), Učakar, Aleksander (author), Godina, Ivo (author), Rojko, Franc (author), Štukelj, Roman (author), Sever Škapin, Andrijana (author), Vidrih, Rajko (author), Dolić, Olivera (author), Veselinović, Valentina (author), Bohinc, Klemen (author)

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.

• Language: English
• Keywords: bacterial adhesion, Streptococcus mutans, polymethyl methacrylate resin, TiO2, surface properties
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: ZF - Faculty of Health Sciences; BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2022
• Year: 2022
• Number of pages: 17 str.
• Numbering: Vol. 12, no. 11, art. 1757
• PID: 20.500.12556/RUL-142785
• UDC: 577:620-1/.2
• ISSN on article: 2079-6412
• DOI: 10.3390/coatings12111757
• COBISS.SI-ID: 129678851
• Publication date in RUL: 25.11.2022

Record is a part of a journal

• Title: Coatings
• Shortened title: Coatings
• Publisher: MDPI AG
• ISSN: 2079-6412
• COBISS.SI-ID: 523035673

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Undetermined
• Keywords: bakterijska adhezija, Streptococcus mutans, polimetil metakrilatna smola, TiO2, površinske lastnosti

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P2-0273-2019
• Name: Gradbeni objekti in materiali