Influence of artificial accelerated aging on the color stability and opacity of composites of different shades.

摘要: AIM The aim of this study was to evaluate the influence artificial accelerated aging on color stability and opacity composites different shades. METHODS Four for direct use (Heliomolar, 4 Seasons, Tetric EvoCeram; QuiXfil) one indirect (SR Adoro) in two shades were used: light (A2) dark (C3 direct, D4 composite). QuiXfil obtained Universal shade. A Teflon matrix (12 X 2 mm) used obtain 54 specimens (N=6), which submitted analysis (Spectrophotometer PCB 6807, Byk Gardner) before after 384 hours. RESULTS After statistical (2-way ANOVA - Bonferroni P<0.05), significant alteration observed studied (P<0.05), with exception QuiXfil. Composite Seasons/C3 showed less (ΔE=0.91). (ΔOP) higher composites. CONCLUSION Artificial interfered optical properties assessed; however, alterations seemed be more related composition than their