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    The Effect of Home Bleaching on Color Match with Anterior Monochromatic Resin Composite Restoration
    (Selçuk Üniversitesi, 2024 Nisan) Ünal, Merve; Paken, Gamze; Güvenç, Pınar; Yağcı, Özhan
    Background: The aim of this study is to assess the color matching in class III restorations made with monochromatic resin composites after bleaching with different carbamide peroxide concentrations.Methods: Twenty human incisors that were free of caries or enamel abnormalities and freshly extracted were cleaned of blood, debris, and calculus. The mesial and distal surfaces were restored with monochromatic resin composites (Omnichroma, Tokuyama, Japan). Polishing discs (Zenit Flex, President Dental, Germany) were used for the composite restoration. All samples were randomly divided into two groups; all of the mesial surfaces were isolated, and distal surfaces were coated with %10 and %16 carbamide peroxide (Opalescence PF; Ultradent Products, Inc., USA). Color matching was evaluated on photographs with a digital colorimeter. The SPSS software program was used to perform statistical analysis (IBM Corp., Armonk, NY, USA).Results: A statistically significant difference was found between the color matching of the restorations after the 5th treatment with 16% carbamide peroxide (p = 0.004) and at the end of the 10th treatment with 10% carbamide peroxide (p = 0.028). Depending on the carbamide peroxide concentration, after the 5th treatment, a statistically significant difference was found between 16% and 10% carbamide peroxide (p = 0.000), but no statistically significant difference was found after the 10th treatment (p > 0.05).Conclusions: After carbamide peroxide bleaching, the hard tissue color became lighter. Since there is no color pigment in the monochromatic resin composite, the color might be lighter after bleaching. Therefore, these composites may be considered safer for bleaching.