Abstract
The purpose of this study was to evaluate the effect of roughness parameters and hydrophobicity of restorative material used to restore non-carious cervical lesions on the biofilm formation. Four restorative materials were investigated: conventional glass ionomer cement (KF, Ketac Fill Plus, 3M ESPE), resin-modified glass ionomer cement (VT, Vitremer, 3M ESPE), nanofilled resin-modified glass ionomer cement (KN, Ketac Nano, 3M ESPE), and nanofilled resin composite (FZ, Filtek Z350 XT, 3M ESPE). Forty disk specimens were prepared from each material, dived in four groups. Five samples were used for topography parameters analysis using a 3D profilometry. The amplitude parameters (Sa and Sq), spatial parameter (Sds), and hybrid parameter (Ssc) were extracted in area using cut-off of 0.25 mm. Hydrophobicity was determined by the contact angle measurement of deionized water on the surface. The biofilm collected from a 24-year-old subject was grown on modified brain–heart infusion agar under aerobic conditions at 37 °C for 24 h. Each test disk was immersed in 200 µL of biofilm suspension (n = 10) and incubated for 24 h at 37 °C. Biofilm was evaluated after 24 h formation on each disk after stained with 1 % fluorescein using confocal laser-scanning microscopy. Data were analyzed using one-way ANOVA and Tukey test (α = 0.05), Pearson correlation was used to compare topography parameters with biofilm formation. Significant differences were found in related amplitude parameters (Sa and Sq, FZ = KN > VT > KF). KN presented the highest hydrophobicity. FZ and KN presented the lowest thickness and biovolume of biofilm when compared with VT and KF. All topography parameters were significantly correlated with biofilm formation. FZ and KN, material with nanoparticles presented better performance-related topography parameters and biofilm formation. Clinical relevance: The incorporation of nanotechnology into restorative materials promotes better surface topography with lower biofilm formation.
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Acknowledgements
The authors are grateful to FAPEMIG for financial support; the Microscopy Laboratory, Federal University of Uberlandia for the contribution of the confocal images and the Microbiology Laboratory, Technical School of Health of Federal University of Uberlandia for biofilm formation.
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The authors of this article certify that they have no proprietary, financial, or other personal interest of any nature or type in any product, service, or company that is mentioned in this article.
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Flausino, J.S., Soares, P.B.F., Carvalho, V.F. et al. Biofilm formation on different materials for tooth restoration: analysis of surface characteristics. J Mater Sci 49, 6820–6829 (2014). https://doi.org/10.1007/s10853-014-8384-z
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DOI: https://doi.org/10.1007/s10853-014-8384-z