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This study aims to evaluate the color stability of resin composites after exposure to whitening mouthwash and subsequent coloring solutions.

May 4, 2026

Evaluation of the color stability of resin composites against new color changes following a whitening procedure using mouthwashes.

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Randomized trial evaluates color changes in resin composites after whitening mouthwash, suggesting varying stability.

This study aims to evaluate the color stability of resin composites after exposure to whitening mouthwash and subsequent coloring solutions.
Sixty composite discs prepared and divided into three groups (n = 20).
Samples immersed in whitening mouthwash for 24 hours followed by coffee solution immersion for 6 days.
One-way ANOVA and LSD Post Hoc test used for statistical analysis.
The OMN group exhibited significantly greater color changes compared to the EST and PAL groups (P < 0.001).
Varying degrees of color change were observed in resin samples after exposure to the whitening mouthwash.
No further color change occurred after re-exposure to the coffee solution.

Arslan et al. (2026) studied this question.

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