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https://open.uns.ac.rs/handle/123456789/1276
Title: | The effect of dental LED light-curing unit photoactivation mode on 3D surface morphology of dental nanocomposites evaluated by two-dimensional multifractal detrended fluctuation analysis | Authors: | Ţălu Ş. Yadav R. Lainović, Tijana Méndez-Albores A. Trejo G. Kukuruzović, Dragan Nezafat N. Shafiekhani A. Solaymani S. |
Issue Date: | 1-Oct-2018 | Journal: | Microscopy Research and Technique | Abstract: | © 2018 Wiley Periodicals, Inc. The objective of this study was to evaluate the effect of two photoactivation modes of dental LED light-curing unit (LCUs) (conventional and “Soft Start” mode) on surface texture parameters of two dental resin-based nanocomposites. LED LCUs were considered as standard light-curing devices in contemporary dental practice. Atomic force microscopy (AFM) was applied to investigate surface morphology on 90 × 90 μm2 scanning area through 2D multifractal detrended fluctuation analysis with computational algorithms basis. In order to compare 3D surface roughness at nanometer scale, singularity spectrum f[α] was used which characterize local scale properties of multifractal nature of samples. The results confirmed that larger spectrum width Δα (Δα = αmax − αmin) of f(α) is associated with non-uniform surface morphology. Moreover, materials whose polymerization was photoactivated by the “soft start” polymerization mode, showed better quality of the surface microstructure with lower values of AFM surface texture parameters. | URI: | https://open.uns.ac.rs/handle/123456789/1276 | ISSN: | 1059910X | DOI: | 10.1002/jemt.23123 |
Appears in Collections: | FTN Publikacije/Publications |
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