title: Effect of alcoholic beverages on surface roughness and microhardness of dental composites.
abstract: The aim of this study was to evaluate the microhardness and surface roughness of composite resins immersed in alcoholic beverages. Three composite resins were used: Durafill (Heraeus Kulzer), Z250 (3M-ESPE) and Z350 XT (3M-ESPE). The inital surface roughness and microhardness were measured. The samples were divided into four groups (n=30): G1-artificial saliva; G2-beer; G3-vodka; G4-whisky. The samples were immersed in the beverages 3× a day for 15 min and 30 days. The surface roughness and microhardness assays were repeated after immersion period. The data were statistically analyzed by two-way ANOVA and Tukey-HSD test (p<0.05). Surface roughness increased for all composite resins immersed in beer and whisky. Microhardness of all groups decreased after immersion in alcoholic beverages. The effect of these beverages on dental composites is depended upon the chemical composition, immersion time, alcohol content and pH of solutions.
authors.affiliation: Department of Restorative Dentistry, School of Dentistry, Alagoas Federal University.
authors.forename: Marcos Aurélio Bomfim
authors.initials: MA
authors.lastname: DA Silva
authors.forename: Rafael Pino
authors.initials: RP
authors.lastname: Vitti
authors.forename: Mário Alexandre Coelho
authors.initials: MA
authors.lastname: Sinhoreti
authors.forename: Rafael Leonardo Xediek
authors.initials: RL
authors.lastname: Consani
authors.forename: José Ginaldo da
authors.initials: JG
authors.lastname: Silva-Júnior
authors.forename: Josealdo
authors.initials: J
authors.lastname: Tonholo
mesh_terms: D000434:Alcoholic Beverages; D001628:Beverages; D003188:Composite Resins; D003764:Dental Materials; D006244:Hardness; D008422:Materials Testing; D013499:Surface Properties
chemical_list: D003188:Composite Resins; D003764:Dental Materials