Effects of Whitening Mouthrinses on the Color Recovery of One-shade and Multi-shade Stained Composite Resins

Authors : Gülşah Yenier Yurdagüven
Pages : 97-104
Doi:10.51122/neudentj.2025.145
View : 41 | Download : 29
Publication Date : 2025-04-28
Article Type : Research Paper
Abstract :Aim: The aim of the present study was to evaluate the efficacy of mouthrinses on the colour recovery of stained one-shade (Charisma Topaz One [CTO]) and multi-shade (Estelite Sigma Quick [ESQ]) composite resins. Methodology: Thirty disc-shaped specimens (8-mm diameterx2-mm thickness) were prepared (n = 30). After polishing (Sof-Lex), the specimens were stored in 37°C for 24h. The specimens were stained by coffee immersion for 168h at 37°C, and then randomized into three subgroups based on the type of mouthrinse (n=10): LAW: Listerine Advanced White; CPWC: Colgate Plax White+Charcoal Capitano Whitening; LTC: Listerine Total Care. Colorimetric measurements were performed at baseline (T0), after staining (T1) and after mouthrinse immersion for 12h at 37°C (T2) with a spectrophotometer (VITA Easy shade). CIELab parameters were used for the anlaysis. Colour change expressed by ΔE and ΔL, Δa, Δb were calculated. The data were subjected to two-way ANOVA, post hoc Tukey, Student t tests (p<0.05). Results: All samples demonstrated clinically unacceptable color change after coffee-discoloration (ΔE>3.3). CTO showed significantly higher ΔE (12,16±1,37) than ESQ (7,48±0,95) (p=0.001). The mouthrinses led to a distinct increase in the L and decrease in the a and b after staining. LAW and CPWC resulted in significant differences in ΔL (p=0.001), Δb (p=0.031) and ΔE (p=0.002) of ESQ, while causing significant difference in Δb of CTO (p=0.037) at T2-T0. Conclusion: Whitening mouthrinse may reduce the discolouration of coffee-stained composite resins, but not match the initial colour. It provides a better whitening effect in multi-shade composite resin than one-shade composite resins.
Keywords : Kompozit rezin, ağız gargarası, renk

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