Effect of Mouth Rinses on Surface Roughness of Two Methacrylate-Based and Siloraine-Based Composite Resins

Abstract

ABSTRACTBackground: Various fluids in the oral environment can affect the surface roughness of resin composites. This in vitrostudy was conducted to determine the influence of the mouth rinses on surface roughness of two methacrylatebasedresin (nanofilled and packable composite) and siloraine-based resin composites.Materials and methods: Disc-shaped specimens (12 mm in diameter and 2mm in height) were prepared from threetypes of composite resin materials: Filtek™ Z350 XT, Filtek™ P60 and Filtek™ P90.Thirty specimens were prepared fromeach composite type and subdivided into three subgroups (n=10) according to the type of treatment solution:distilled water (control), Listerine (alcohol-containing), Sensodyne Pronamel (alcohol free fluoride- containing).Eachsubgroup was immersed in 20 ml of treatment solutions and incubated at 37°C for 24 hr and then subjected tosurface roughness test by profilometer .The resulting data were statistically analyzed using ANOVA and LSD testat0.05 significance level.Results: The results of this study showed that both mouth rinses irrespective of the presence or absence of alcoholresulted in significant increase in the surface roughness of the tested resin composite materials compared to controlwith no significant difference between the two mouth rinses. Comparison among the three types of resin in eachtreatment solution showed that there was a statistically high significant difference in surface roughness between allsubgroupsConclusion: Both alcohol-containing and alcohol-free fluoride containing mouth rinses cause highly significantincrease in surface roughness of composite resins. Composite changes depended on the material itself rather thanthe mouth rinse solution used.