title: Influence of polishing protocol on flexural properties of several dental composite resins.
abstract: The aim of this study was to determine the influence of the finishing protocol (FP) on flexural properties of several composites (CR). Twenty composite samples (25x2x2 mm) were prepared: G1 HelimolarR; G2 Filtek™ Z350;G3TetricR N Ceram, G4 Point 4™, G5 Premisa™; G6 Esthet.XR HD, G7 ice, G8 Vit-L-escenceR, G9 GrandioR, G10 TPHR3, G11 AmelogenR Plus, G12 Brilliant Enamel; G13 Filtek™ Z100 and randomly divided into four groups according to the finishing system: C control, J JiffyR, SS Super SnapR, AA AstropolR /AstrobrushR. Each sample was polished for 10 seconds with each sequence instrument, and stored in distilled water for 24 hours, after which a three-point flexure test was applied to determine flexural strength (FS) and modulus (Flexural modulus). Data were analyzed using a two-way multivariate ANOVA and means were compared with Tukey's test. Results were: FS level CR p=0.000 with significant differences. FS level FPp= 0.093 with significant differences. In order: FM level CR p 0.00 with significant differences. FM level PS p=0.001; with significant differences. Under the study conditions, the polishing systems based on silicone rubber decreased the flexural properties of composite resins.
authors.affiliation: Department of Operative Dentistry, School of Dentistry, University of Los Andes, Mérida, Venezuela.
authors.forename: Robert
authors.initials: R
authors.lastname: Ramirez-Molina
authors.affiliation: Department of Dental Materials, School of Dentistry, University of Buenos Aires, Buenos Aires, Argentina.
authors.forename: Andrea E
authors.initials: AE
authors.lastname: Kaplan
mesh_terms: D003188:Composite Resins; D003775:Dental Polishing; D006801:Humans; D008422:Materials Testing; D013499:Surface Properties
chemical_list: D003188:Composite Resins