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Influence of surface properties of resin‐based composites on in vitro S treptococcus mutans biofilm development
Author(s) -
Ionescu Andrei,
Wutscher Elisabeth,
Brambilla Eugenio,
SchneiderFeyrer Sibylle,
Giessibl Franz J.,
Hahnel Sebastian
Publication year - 2012
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.2012.00983.x
Subject(s) - biofilm , x ray photoelectron spectroscopy , composite material , polishing , surface roughness , materials science , resin composite , composite number , chemistry , chemical engineering , genetics , bacteria , engineering , biology
The aim of this in vitro study was to evaluate the influence of physicochemical surface properties of resin‐based composites on S treptococcus mutans biofilm formation. Specimens were prepared from each of four resin‐based composites by polymerization against M ylar 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 G randio 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.