Background: The resistance of CAD/CAM monolithic esthetic materials to staining by commonly consumed beverages is essential for the success and longevity of such restorations.
Aim: To evaluate the color change of three commercially available esthetic monolithic block materials: Vita Suprinity (zirconia enriched lithium silicate glass ceramic), Lava Ultimate (Nanoceramic resin composite) and Vita Enamic (hybrid ceramic/PICN) after immersion in commonly consumed beverages: coffee and cola compared to distilled water as control.
Methodology: A total of 45 specimens were cut from CAD/CAM blocks where each slice was 2 mm thick. Three subgroups of each material group (n= 5) were tested according to the immersion solutions. Specimens were stored in each solution for 2 weeks before being tested. A spectrophotometer was employed to detect color change (ΔE) before and after immersion.
Results: Coffee produced the highest color change (ΔE) in Vita Enamic while cola had the same influence on Lava Ultimate. Vita Suprinity showed the least color change compared to the other two materials on immersion in both beverages. Distilled water resulted in the highest ΔE value in Lava Ultimate beyond the acceptable threshold (AT) while in Vita Suprinity was within the AT.
Conclusion: Coffee can be considered a potential staining beverage. Also, cola can adversely affect color in resin-containing materials. Vita Suprinity can be considered the most color stable of the tested blocks. Vita Enamic may constitute a compromise regarding its color stability while Lava Ultimate exhibited inferior color stability on immersion in coffee, cola and distilled water.