Bacterial Adhesion of Streptococcus mutans to Dental Material Surfaces

Molecules

Franc Rojko¹  Klemen Bohinc¹  Anamarija Zore¹  Petra Virant¹  Rebeka Rudolf²  Mirjam Kozmos³  Anže Abram⁴  Peter Raspor⁵ 

[1] Faculty of Health Sciences, University of Ljubljana, Zdravstvena 5, 1000 Ljubljana, Slovenia;Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia;Faculty of Medicine, University of Maribor, Taborska 8, 2000 Maribor, Slovenia;Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia;University of Ljubljana, Kongresni trg 12, 1000 Ljubljana, Slovenia;

关键词: bacterial adhesion;    Streptococcus mutans;    dental materials;    surface properties;   

DOI  :  10.3390/molecules26041152

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown