Effect of Translucency on Color Stability of Resin-based Composites

Objective: This study evaluated the effect of translucency on the color stability of resin-based composites (RBCs). Methods: Different translucent/opaque shades of RBCs were used: Filtek Ultimate (FU); A2 Enamel, A2 Dentin, A2 Body, IPS Empres Direct (IED); A2 Enamel, A2 Dentin, GC Essentia (GC); LE, MD, Estelite Ʃ Quick (EQ); OA2, A2, CeramX duoSphertec and One (CX); E2, D2, A2. Disc-shaped specimens were stained in coffe and then brushed. The color changes (ΔE) were calculated between baseline and treatment. One-way ANOVA and Tukey’s post-hoc test were used for statistical analysis (α=0.05). Results: After staining, the difference between the ΔE values of RBCs was not statistically significant, except GC LE. After both staining and brushing, the ΔE values of the enamel shades were the highest, and the order of ΔE values was body > dentin for ESQ and CX, dentin > body for FU. Conclusion: The ΔE values of the enamel shades were the highest after both staining and brushing.