الفهرس 
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Abstract
Objectives: The present study aims to evaluate the color change and surface roughness of
reinforced composite (BRILIANT CRIOS) after immersion in acidic beverage (Pepsi).
Methodology: Samples from reinforced composite (BRILIANT CRIOS) were evaluated for colour
change and surface roughness under immersion inartificial saliva and acidic beverage (Pepsi). Atotal of 23 samples were prepared 1mm in thickness and (14 × 12 × 18 (mm) in dimensions. The
average colour difference (Delta E*) was computed following immersion in artificial saliva and an
acidic beverage. Color parameters were measured before and after the immersion using a
spectrophotometer analysis. A non-contact profilometer was used to measure the surface
roughness.The Shapiro-Wilk test was used for statistical analysis. Data had a parametric
distribution, thus we used repeated measures ANOVA and the Bonferroni post hoc test to examine
them. The significance level was set at P ≤ 0.05.
Results: There was a significant color change in samples immersed in Pepsi (3.62±1.80) was
significantly higher than that of samples subjected to artificial saliva. Color change (2.20±0.97)
(t=5.77, p<0.001). There was a significant difference between roughness values measured in
artificial saliva and Pepsi (f=19.29, p<0.001). The highest value was measured in Pepsi samples
(0.2927±0.0021), followed by baseline samples (0.2902±0.0032), while the lowest value was found
in artificial saliva samples (0.2897±0.0039). Post hoc pairwise comparisons showed Pepsi samples
to have significantly higher values than baseline and artificial saliva (p<0.001).
Conclusion: reinforced composite (BRILIANT CRIOS) samples showed color change and surface
roughness beyond the clinically acceptable level after immersion in acidic beverage (Pepsi).
Keywords: reinforced composite, BRILIANT CRIOS, artificial saliva, acidic beverage,
Color Change, surface roughness.