Purpose: The aim of this study was to evaluate the effects of two different home bleaching agents on color stability and surface roughness of hybrid ceramics.
Materials and Methods: Three dental hybrid ceramics (Lava Ultimate, Cerasmart, and Vita Enamic) and two different home bleaching agents (9.5% hydrogen peroxide and 22% carbamide peroxide) were used. Thirty specimens of each material were prepared with dimensions of 12 × 14 × 1 mm. Technical polishing kits were applied to one surface of the specimens for the surface finishing procedure. Color parameters (L*a*b*) of the specimens were measured. Three subgroups were determined: control (C), hydrogen peroxide (HP), and carbamide peroxide (CP) (n = 10 each). After the bleaching procedures, color parameters were remeasured and color differences (ΔE) were calculated. Surface roughness values of the specimens were detected with a profilometer. Surface analysis of one specimen of each group was performed with a scanning electron microscope. Data were analyzed by two-way ANOVA and Tukey honest significant difference tests.
Results: There was an interaction between material and bleaching agent type (P < .05). The highest ΔE values were observed in CP groups, and the lowest ΔE values were observed in control groups. For surface roughness, there was not an interaction between material and bleaching agent type (P >.05). Material and bleaching agent factors had a significant effect on surface roughness (P < .05). The highest surface roughness values were detected in HP groups.
Conclusion: Home bleaching agents caused clinically acceptable color differences on hybrid ceramic materials. Hydrogen peroxide increased the surface roughness of hybrid ceramics. Int
