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Influence of the artificial saliva storage on 3-D surface texture characteristics of contemporary dental nanocomposites.
Talu, Stefan; Bramowicz, Miroslaw; Kulesza, Slawomir; Lainovic, Tijana; Vilotic, Marko; Blazic, Larisa.
Afiliación
  • Talu S; Faculty of Mechanical Engineering, Department of AET, Discipline of Descriptive Geometry and Engineering Graphics, Technical University of Cluj-Napoca, Cluj, Romania.
  • Bramowicz M; Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.
  • Kulesza S; Faculty of Mathematics and Computer Science, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland.
  • Lainovic T; Faculty of Medicine, School of Dentistry, University of Novi Sad, Novi Sad, Serbia. tijana.lainovic@gmail.com.
  • Vilotic M; Faculty of Technical Sciences, Department for Production Engineering, University of Novi Sad, Novi Sad, Serbia.
  • Blazic L; Faculty of Medicine, Department of Restorative Dentistry and Endodontics, School of Dentistry, Clinic of Dentistry of Vojvodina, University of Novi Sad, Novi Sad, Serbia.
J Microsc ; 264(2): 198-206, 2016 11.
Article en En | MEDLINE | ID: mdl-27312957
The aim of this study was to analyse the influence of the artificial saliva on a three-dimensional (3-D) surface texture of contemporary dental composites. The representatives of four composites types were tested: nanofilled (Filtek Ultimate Body, FUB), nanohybrid (Filtek Z550, FZ550), microfilled (Gradia Direct, GD) and microhybrid (Filtek Z250, FZ250). The specimens were polymerised and polished by the multistep protocol (SuperSnap, Shofu). Their surface was examined, before and after 3 weeks' exposure to artificial saliva storage. The surface texture was analysed using the atomic force microscope (AFM). The obtained images were processed to calculate the areal autocorrelation function (AACF), anisotropy ratio Str (texture aspect ratio), and structure function (SF). The log-log plots of SF were used to calculate fractal properties, such as fractal dimension D, and pseudo-topothesy K. The analysis showed changes in surface anisotropy ratio Str values, which became higher, whereas the Sq roughness (root-mean-square) reduced after the artificial saliva storage. All the samples exhibited bifractal structure before the saliva treatment, but only half of them remained bifractal afterwards (GD, FZ250), whereas the other half turned into a monofractal (FUB, FZ550). The cube-count fractal dimension Dcc was found to be material- and treatment-insensitive.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saliva Artificial / Resinas Compuestas / Nanocompuestos Tipo de estudio: Guideline Idioma: En Revista: J Microsc Año: 2016 Tipo del documento: Article País de afiliación: Rumanía Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Saliva Artificial / Resinas Compuestas / Nanocompuestos Tipo de estudio: Guideline Idioma: En Revista: J Microsc Año: 2016 Tipo del documento: Article País de afiliación: Rumanía Pais de publicación: Reino Unido