Bacterial adhesion of Streptococcus mutans to dental material surfaces

Kozmos, Mirjam (author), Virant, Petra (author), Rojko, Franc (author), Abram, Anže (author), Rudolf, Rebeka (author), Raspor, Peter (author), Zore, Anamarija (author), Bohinc, Klemen (author)

The aim of this study was to investigate and understand bacterial adhesion to different dental material surfaces like amalgam, Chromasit, an Co-Cr alloy, an IPS InLine ceramic, yttrium stabilized tetragonal polycrystalline zirconia (TPZ), a resin-based composite, an Au-Pt alloy, and a tooth. For all materials, the surface roughness was assessed by profilometry, the surface hydrophobicity was determined by tensiometry, and the zeta potential was measured by electrokinetic phenomena. The arithmetic average roughness was the lowest for the TPZ ceramic (R$_a$ = 0.23 µm ± 0.02 µm), while the highest value was observed for the Au-Pt alloy (R$_a$ = 0.356 µm ± 0.075 µm). The hydrophobicity was the lowest on the TPZ ceramic and the highest on the Co-Cr alloy. All measured streaming potentials were negative. The most important cause of tooth caries is the bacterium Streptococcus mutans, which was chosen for this study. The bacterial adhesion to all material surfaces was determined by scanning electron microscopy. We showed that the lowest bacterial extent was on the amalgam, whereas the greatest extent was on tooth surfaces. In general, measurements showed that surface properties like roughness, hydrophobicity and charge have a significant influence on bacterial adhesion extent. Therefore, dental material development should focus on improving surface characteristics to reduce the risk of secondary caries.

• Language: English
• Keywords: bacterial adhesion, Streptococcus mutans, dental materials, 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
• Year: 2021
• Number of pages: 15 str.
• Numbering: Vol. 26, iss. 4, art. 1152
• PID: 20.500.12556/RUL-124835
• UDC: 544.722.54:6161.31
• ISSN on article: 1420-3049
• DOI: 10.3390/molecules26041152
• COBISS.SI-ID: 52565251
• Publication date in RUL: 22.02.2021

Record is a part of a journal

• Title: Molecules
• Shortened title: Molecules
• Publisher: MDPI
• ISSN: 1420-3049
• COBISS.SI-ID: 18462981

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.
• Licensing start date: 22.02.2021

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P3-0388
• Name: Mehanizmi varovanja zdravja