Background and Aim: To assess the impacts of various energydrinks on the color stability and surface roughness of nanohybridand microhybrid resin-based composites.Materials and Methods: A total of 120 disc-shapedsamples were fabricated using nanohybrid and microhybridcomposite resins. The samples were randomly distributed into6 experimental groups according to the beverage used forimmersion (n=10): Distilled Water (control), Black Bruin, BlackEagle, Burn, Just Power, and Red Bull. Initial surface roughness(Ra) values were measured utilizing a contact profilometer, whilecolor measurements were recorded with a spectrophotometer.After a 7-day immersion period, both surface roughness and colorassessments were repeated. Statistical analysis was conductedusing two-way ANOVA and Tukey’s post hoc test.Results: No statistically difference in color change (ΔE00) wasnoted between nanohybrid and microhybrid composites afterbeverage immersion. Only the Burn group exhibited clinicallyunacceptable ΔE00 values (ΔE00>1.8). Among all groups, Burnresulted in the most significant discoloration (p 0.05). All energy drinks led to increasedsurface roughness in microhybrid resins while Black Eagle,Burn, and Just Power caused significant roughness increasesin the nanohybrid specimens (p < 0.05). The Black Eagle groupdemonstrated higher roughness values in microhybrid resinsthan in nanohybrid ones (p < 0.05).Conclusion: All tested energy drinks increased the surfaceroughness of microhybrid composites, whereas significantchanges in nanohybrid composites were limited to specificgroups. No significant difference in color change was observedbetween the two composite types.
POLAN et al. (Fri,) studied this question.