STATEMENT OF THE PROBLEM: Several mouth rinses promising whiter smiles are on the market today. PURPOSE: The aim of this study was to investigate the in vitro color recovery effects of six commercial mouth rinses on a stained universal composite resin. MATERIALS AND METHODS: Sixty composite resin specimens were prepared with a universal composite resin (Filtek Z250), and baseline Commission Internationale de l'Eclairage L*a*b* color coordinates were measured by spectrophotometry. Specimens were subjected to two cycles of staining with coffee and cherry juice for 2 weeks, followed by immersion into mouth rinses (Listerine Whitening Vibrant, Scope White, Crest 3D White, Signal White Now, Oral-B 3D White, and Colgate Optic White). Changes in color coordinates were measured after staining and after 24- and 72-hour immersion periods. Color alterations were calculated both by CIEDE2000 and CIELAB formulas. Data were submitted to analysis of variance for repeated measures and Tukey's multiple comparison test. (α = 0.05). RESULTS: Immersion in colorant beverages caused perceptible discolorations on composite resin samples (ΔE00 > 2.25 and ΔEab * > 3.46). Immersion period and mouth rinses were significant factors for the color recovery procedure (p < 0.001). The interaction between immersion time and WMR was also significant (p < 0.001). CONCLUSIONS: The color recovery of composite resin was affected by the brand of mouth rinse and the period of immersion. CLINICAL SIGNIFICANCE: This in vitro study revealed that tested mouth rinses are capable of recovering discolored composite resin colors after a prolonged exposure period.
STATEMENT OF THE PROBLEM: Several mouth rinses promising whiter smiles are on the market today. PURPOSE: The aim of this study was to investigate the in vitro color recovery effects of six commercial mouth rinses on a stained universal composite resin. MATERIALS AND METHODS: Sixty composite resin specimens were prepared with a universal composite resin (Filtek Z250), and baseline Commission Internationale de l'Eclairage L*a*b* color coordinates were measured by spectrophotometry. Specimens were subjected to two cycles of staining with coffee and cherry juice for 2 weeks, followed by immersion into mouth rinses (Listerine Whitening Vibrant, Scope White, Crest 3D White, Signal White Now, Oral-B 3D White, and Colgate Optic White). Changes in color coordinates were measured after staining and after 24- and 72-hour immersion periods. Color alterations were calculated both by CIEDE2000 and CIELAB formulas. Data were submitted to analysis of variance for repeated measures and Tukey's multiple comparison test. (α = 0.05). RESULTS: Immersion in colorant beverages caused perceptible discolorations on composite resin samples (ΔE00 > 2.25 and ΔEab * > 3.46). Immersion period and mouth rinses were significant factors for the color recovery procedure (p < 0.001). The interaction between immersion time and WMR was also significant (p < 0.001). CONCLUSIONS: The color recovery of composite resin was affected by the brand of mouth rinse and the period of immersion. CLINICAL SIGNIFICANCE: This in vitro study revealed that tested mouth rinses are capable of recovering discolored composite resin colors after a prolonged exposure period.
Authors: Mehmet Mustafa Özarslan; Ulviye Şebnem Büyükkaplan; Çağatay Barutcigil; Merve Özarslan; Kubilay Barutcigil; Nurullah Türker Journal: Head Face Med Date: 2018-11-26 Impact factor: 2.151