The aim of this study is to evaluate tooth discoloration caused by different root canal sealers and the effect of subsequent bleaching treatment. In the present study, the coronal areas of the teeth whose crowns were cut and filled with the bioceramic root canal sealer and the resin-based root canal sealer, and before filling, after waiting for 1 week, 1 month and applying bleaching treatment. Color changes were observed. Resin-based root canal sealer group showed more coloration in the t2 measurement compared to the first measurement, which showed a statistical difference compared to the control group values. After the bleaching treatment, more bleaching was observed in the teeth with root canal sealer and also, the control group showed a statistically significant difference due to the small change in the control group. It has been shown that color changes can achieve the desired appearance by applying bleaching treatment after root canal treatment.
