Effect of swimming pool water on staining susceptibility of various tooth-colored restorative materials

ObjectiveThe aim of this study was to evaluate the color stability of swimming pool water-treated esthetic restorative materials after exposure to different staining solutions.Methods and materialSix direct restorative materials (nanofilled and hybrid composite resins, compomer, nano and resin-modified ionomers) and one ceramic material (IPS Empress2) were used. Disk specimens: 10 mm in diameter and 2 mm in thickness were prepared from each test material. Specimens were immersed in swimming pool simulated water for 2 weeks. The treated samples were divided into seven groups to be immersed in six different staining solutions and distilled water as a control group. Color measurements were recorded.ResultsThe results showed that the effect of staining solutions on the color change of swimming pool water-immersed direct restoratives was material dependent.ConclusionPhotac-Fil resin-modified glass-ionomer had the highest ΔE while Filtek Z-250 hybrid composite had the lowest ΔE. Nescafe and red tea resulted in the highest discoloration among the tested materials, followed by green tea.