ANALYSIS OF STABILITY OF COLOR RESIN COMPOSITE UNDER THREE CONCENTRATIONS CARB AMIDE PEROXIDE

The objectiveofthepresentstudy was toanalyzethe color stability of a composed resin that was submittedto threeper- formed at the Severino Sombra Universitys Odontology L a- boratory-Vassouras,Rio deJaneiro State ,Brazil.Forty spec- imens were prepared and divided into a groups for the prepar a- tion on the specimens a photopolymeriz able resin Opallis AE , (FGM, Joinville, SC):was used in the A3,5 color. For the ph o- topolymerization of the specimens, a photopolymerizer (Coltoloux AE LED) was used for two hours diary of exposure. There different concentrations of carbamide peroxide were selected 10%, 16% and 22%. The readings to evaluationof the colors were performed by the reflectance spectroph otometer (Vita, Germany). The results showed alteration of color in the specimens that were exposed to the tree concentrations of ca r-