Ionescu, Andrei and Wutscher, Elisabeth and Brambilla, Eugenio and Schneider-Feyrer, Sibylle and Giessibl, Franz J. and Hahnel, Sebastian (2012) Influence of surface properties of resin-based composites on in vitro Streptococcus mutans biofilm development. EUROPEAN JOURNAL OF ORAL SCIENCES, 120 (5). pp. 458-465. ISSN 0909-8836, 1600-0722
Full text not available from this repository. (Request a copy)Abstract
The aim of this in vitro study was to evaluate the influence of physicochemical surface properties of resin-based composites on Streptococcus mutans biofilm formation. Specimens were prepared from each of four resin-based composites by polymerization against Mylar strips. Half of the number of specimens received no further surface treatment, whereas the other half were subjected to a polishing treatment. Surface roughness (SR) and topography were assessed using profilometry and atomic force microscopy. Surface free-energy (SFE) was determined, and the chemical surface composition was analysed by X-ray photoelectron spectroscopy (XPS). S. mutans biofilms were formed on the surface of the resin-based composite specimens for either 48 or 96 h using an artificial mouth system (AMS). Polishing caused a significant decrease in SFE, and XPS analysis indicated an increase of surface silicon and a decrease of surface carbon. Only for Grandio was a significant increase in SR identified after polishing, which was probably related to the higher concentration of filler particles on its surface. Significantly less S. mutans biofilm formation was observed on polished resin-based composites than on unpolished resin-based composites. These results indicate that the proportions of resin matrix and filler particles on the surface of resin-based composites strongly influence S. mutans biofilm formation in vitro, suggesting that minimization of resin matrix exposure might be useful to reduce biofilm formation on the surface of resin-based composites.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUARTZ TUNING FORK; FREE ENERGY; POSTERIOR COMPOSITES; ARTIFICIAL MOUTH; ADHESION; ROUGHNESS; RESTORATIONS; MICROSCOPE; SUCROSE; SENSOR; atomic force microscopy; biofilm; bioreactors; resin-based composite; Streptococcus mutans |
| Subjects: | 500 Science > 530 Physics 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Zahnärztliche Prothetik Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 May 2020 11:43 |
| Last Modified: | 05 May 2020 11:43 |
| URI: | https://pred.uni-regensburg.de/id/eprint/18045 |
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