Color Stability of Resin Composites Storaged in Staining Solutions

Objectives: The aim of this study was to evaluate the color stability of laboratory-processed resin composites and direct restorative composite after the storage in staining food solution. Methods: Thirty-two samples of Filtek Z250 (3M Espe) and Sinfony (3M Espe) were made, measuring 15 x 1,2mm in depth and photo-cured in a vacuum-light chamber (Visio Beta Vario system, 3M Espe) and LED source (Ultraled, Dabi-Atlante). The color of all specimens were analyzed in a spectrophotometer UV-2450 (Shimadzu) using the CIE L*a*b* parameter. Eight samples of each composite were immersed in Coca-Cola, orange juice, red wine and distilled water as a control during four weeks. The color stability (ΔE) was calculated. Results: The Filtek Z250 showed less color stability than Sinfony when the samples were immersed in Coca-Cola and red wine (p<0.05). There is no statistical difference between the curing sources (p>0.05). Conclusion: Among the staining solutions the red wine caused the highest color change, compared with orange juice, Coca-Cola and distilled water. Fapesp # 06/56111-1