Effect of Successive Bleaching Treatments Followed by Staining on Color, Whiteness, and Translucency of Polymer‐Based CAD ‐ CAM Materials

OBJECTIVE: To evaluate differences in color, whiteness, and translucency of CAD-CAM materials after successive bleaching treatments and coffee immersion. MATERIALS AND METHODS: ) were statistically analyzed for each material using two-way ANOVA and Bonferroni's tests and interpreted based on their respective perceptibility and acceptability thresholds. Surface topography was assessed by scanning electron microscopy. RESULTS: . Only WH in VE did not result in topographic changes. CONCLUSIONS: Successive bleaching treatments and coffee immersion resulted in imperceptible or deemed acceptable color, whiteness, and translucency changes of LU and VE. CLINICAL SIGNIFICANCE: Despite the surface topographic changes, all the bleaching methods tested in up to three sessions each followed by exposure to coffee did not adversely affect the esthetic durability of Lava Ultimate and VITA Enamic CAD-CAM materials.