Evaluation of the color stability of two different posterior tooth colored restorative materials

Background: The aim of this in vitro study was to evaluate the color stability of esthetic restorative materials (Cention N, Solare Sculpt) after exposure to different staining solutions (coffee, green tea and Diet Coke). Methods: Cylindrical specimens of both materials (n=40/material) were prepared using 4x8 mm metal molds. They were further divided (n=10) based on the beverages in which they are immersed. The color of each sample was recorded immediately after sample preparation and at 60 days after the staining procedure. Color changes were then analyzed statistically. Results: Color differences (ΔE) were statistically significant between Cention N and Solare sculpt in all beverages with Cention N showing highest staining after 60 days. Among all the beverages, coffee showed the highest level of staining. Conclusions: Staining beverages caused significant discolorations for both test materials. Cention N showed greater color variations with all beverages compared to Solare Sculpt. Coffee showed the highest staining with both materials, followed by Diet Coke then green tea.