Effects of disclosing rinses on the gloss/color of restorative materials

OBJECTIVES: The aim of this study was to evaluate the effects of commercially available pre-brush (Listerine® Agent Cool Blue®) and post-brush (Listerine^® Smart Rinse™) dental plaque tinting mouth rinses on the gloss and color of a composite resin (GC Kalore) and a glass ionomer cement (GC Fuji IX) restorative material. METHODS: Ten disc-shaped specimens (10x2 mm, shade A3) were prepared from each of the restorative materials according to the manufacturer's instructions in a mold. The specimens were stored in distilled water at 37°C for 5 days. The baseline color values (L*a*b*) of each specimen was measured with a spectrophotometer against a white background and the baseline specular gloss was measured using a gloss meter with 60^o geometry. Five specimens from each material were immersed in 20ml of the pre-brush and post-brush solutions and stored at 37°C. The color and gloss values of the specimens were recorded after 24 and 72 hours. Differences were analyzed using repeated-measures ANOVA and Newman-Keuls tests (P = 0.05).  Overall color changes (ΔE) from baseline were calculated. RESULTS:

Differences in the color characteristics (L*a*b) and gloss of composite resin and glass ionomer cement restorative materials were found to be significant after exposure to pre-rinse and post-rinse solutions. ΔE values, with the exception of the 24 hour exposure of composite resin/post-rinse group, were considered clinically significant (ΔE>3.3). CONCLUSION: Dental plaque tinting solutions can alter the color and gloss of polymeric restorative materials.

Abstract ID#: 144650 Password: 171874 Submitter's Email: famegid@hotmail.com Submitter's Full Name: Faika Abdelmegid Program Selection: Dental Materials 7: Polymer-based Materials-Physical Properties and Performance Mode preference: Poster Preferred Presentation Format: Poster Session Intends to withdraw abstract if preferred mode is not assigned.