Investigation of the Effect of Whitening Mouthwashes on the Translucency of Composite Resins at Different Times

The aim of this study is to evaluate the effect of whitening mouthwashes on translucency change (ΔTP) at different times of composite resins after coloring with coffee. In the study, a total of 90 samples (30 samples from each composite resin) were prepared from resin materials (Estelite Σ Quick, G-Aenial Anterior; Omnichroma). After kept in coffee for 12 days, the samples were divided into three subgroups (n=10). The initial (T0) measurement of TP values ​​were recorded. Control groups were kept in distilled water and the other groups were kept in two different mouthwashes (Listerine Advanced White, Crest 3D White). TP values ​​at the end of 24 hours (T1) and 72 hours (T2) were recorded. TP values ​​were determined using the CIEDE2000 formula. Two-way analysis of variance and Tukey test were used (p< 0.05). The lowest ΔTP value was observed in the control group at T0-T1 and T0-T2 times. The highest ΔTP value was observed in Crest 3D White mouthwash at T0-T2 time. However, there was no difference with Listerine Advance White. Among the composites, the highest ΔTP value was found in G-Aenial Anterior at T0-T2 time, and the lowest ΔTP value was found in Omnichroma at T0-T1 time. Whitening mouthwashes caused an increase in the translucency values of resin composites over time. It should be noted that long-term use of whitening mouthwashes may affect the translucency values of composite resins.