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    Color Stability of Provisional Restorative Materials in Different Mouthwash Solutions
    (Hindawi Ltd, 2022) Deger, Yalcin; Bakir, Metin; Demirci, Fatih; Deveci, Buesra
    Purpose. This study is a comparison of the effects of temporary restorative materials (PRMs) on the color change that occurs due to the use of different mouthwash solutions in two time periods. Material and Methods. One hundred fifty disc-shaped specimens(10 mmx2 mm) were fabricated with three PRMs chemically polymerized PMMA (Imident-I), chemically polymerized bisacrylic composite resin (Acry temp-A), and CAD/CAM PMMA-based polymer (Telio CAD-T) according to manufacturers' instruction and using a CAD/CAM milling system (n=10). CIE L*a*b* values of specimens were recorded before immersion. Samples were immersed in solutions (Distilled water-DW, Kloroben-CHX, Listerine Advanced White-LAW, Listerine Total Care-TC, and Listerine Zero-TCZ) in two time periods (t(1),t(2)). Color measurements of the samples were made with the help of a spectro-photometer before and after they were removed in mouthwashes (VITA Easy shade V).Results. According to the statistical analysis results, significant differences were observed between the results obtained in our study. The highest roughness values in Delta E1 were seen in A-LAW (1.83) and the lowest in T-DW (0.61). In Delta E2, the highest roughness values were observed in I-LAW (2.70), and the lowest in T-DW (1.05). Delta E values of all obtained groups were found within clinically acceptable limits (Delta E < 3.7).Conclusions.The content of temporary restorative materials, the production technique, the type of mouthwash, and the immersion time of the restoration affect the color stability. Mouthwash with a whitening effect caused the most discoloration. Among the temporary restorative materials, it was the CAD/CAM material that best preserved its color stability.