Color Stability of Different Composite Resin Materials Bleached with Three Bleaching Agents

Authors : Şebnem TÜRKER, Gamze MANDALI, Burcu BUĞURMAN, Işıl ŞENER, Hasan ALKUMRU

Pages : 9-15

Doi:10.12990/MDJ2013120

View : 22 | Download : 6

Publication Date : 2013-07-29

Article Type : Research Paper

Abstract :The aim of this study was to compare the color stability of 3 proprietary carbamide peroxide bleaching agents on composite resins. Specimens were prepared with a polytetrafluoroethylene plate. After initial color measurements, bleaching agents were applied to each composite resin for 2 weeks. Second color measurements were made. Tested specimens including control group were immersed into distilled water for a - 4 month follow-up period. Third and fourth color measurements were made again after 2 weeks and 4 months of follow-up period. Friedman insert ignore into journalissuearticles values(p<.01);, Kruskal Wallis insert ignore into journalissuearticles values(p<.05); and Wilcoxon Tests were used for statistically evaluation. The most significant color change was seen at the Ormocer group insert ignore into journalissuearticles values(p<.011);. The most significant color change ΔE values were obtained for the Ormocer-Voco group and color changes remained stable after 4 months of immersion in distilled water. Slight color changes values were obtained for nanohybrid and fine particle hybrid composite resins.
Keywords : Bleaching, restorative materials, color stability,