Antifungal effect of polymethyl methacrylate resin base with embedded Au nanoparticles

Marić, Ivan (author), Zore, Anamarija (author), Rojko, Franc (author), Sever Škapin, Andrijana (author), Štukelj, Roman (author), Učakar, Aleksander (author), Vidrih, Rajko (author), Veselinović, Valentina (author), Gotić, Marijan (author), Bohinc, Klemen (author)

Full and partial restorations in dentistry must replicate the characteristics of the patient’s natural teeth. Materials must have good mechanical properties and be non-toxic and biocompatible. Microbes, which can form biofilms, are constantly in contact with restorations. In this study, we investigate how well Candida albicans adheres to a polymethyl methacrylate (PMMA) resin base with gold (Au) nanoparticles. We synthesized Au nanoparticles and characterized them. The average size of Au nanoparticles embedded in PMMA was 11 nm. The color difference ∆E between PMMA and PMMA/Au composites was 2.7 and was still esthetically acceptable to patients. PMMA/Au surfaces are rougher and more hydrophilic than pure PMMA surfaces, and the isoelectric point of both types of surfaces was 4.3. Above the isoelectric point, PMMA/Au surfaces are more negatively charged than PMMA surfaces. The added Au nanoparticles decreased the tensile strength, while the hardness did not change significantly. Adhesion measurements showed that PMMA surfaces modified with Au nanoparticles reduced the extent of microbial adhesion of Candida albicans.

• Language: English
• Keywords: fungal adhesión, C. albicans, polymethyl methacrylate resin, Au, surface properties, composites
• 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: 01.01.2023
• Year: 2023
• Number of pages: 15 str.
• Numbering: Vol. 13, iss. 14, art. 2128
• PID: 20.500.12556/RUL-152752
• UDC: 66
• ISSN on article: 2079-4991
• DOI: 10.3390/nano13142128
• COBISS.SI-ID: 159528707
• Publication date in RUL: 06.12.2023

Record is a part of a journal

• Title: Nanomaterials
• Shortened title: Nanomaterials
• Publisher: MDPI AG
• ISSN: 2079-4991
• COBISS.SI-ID: 523286297

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: Slovenian
• Keywords: adhezija gliv, C. albicans, polimetilmetakrilat, Au, lastnosti površine, kompoziti