ObjectiveThe objective of this study was to assess the impact of various surface finishing protocols on the surface roughness of resin-based hybrid CAD-CAM materialsMaterials and MethodsThree distinct resin-based CAD-CAM blocks Bright Crios (BC), Cerasmart (CS), and Vita Enamic (VE) (n = 10) were used to create 90 specimens (1.5 ± 0.05 mm). Three distinct surface treatments were applied to each group: glazing (G), mechanical polishing (MP), and control (C). One specimen was chosen at random from each group for surface topography analysis, and it was scanned using scanning electron microscopy (SEM) at ×1000 magnification. A profilometer was used to measure the surface roughness values. The normality of the data distribution was evaluated using the Shapiro-Wilk test. The primary and combined impacts of surface treatment and material type on roughness values were assessed using the generalized linear model approach. The Bonferroni test was used for multiple comparisons.Results Surface roughness values showed statistically significant differences among the materials (p 0.001). The highest mean roughness was observed in the control group of the VE material, while the lowest was found in its glaze group. In the VE and CS groups, the glazing procedure resulted in lower roughness values, with no statistically significant difference between them. In the BC groups, both mechanical polishing and glazing led to low roughness values, with no statistically significant difference between these two procedures.Conclusion The application of glaze material may be an effective technique for achieving smoother surfaces in resin-based hybrid CAD-CAM materials.
Yavuz et al. (Tue,) studied this question.