This study aims to evaluate the discoloration effects of various root canal sealers and the impact of subsequent bleaching treatments on tooth color. In this experiment, the coronal sections of teeth were treated with either a bioceramic or a resin-based root canal sealer, and color changes were monitored at intervals of one week, one month, and after the application of bleaching treatment. The results showed that the resin-based root canal sealer caused a more significant color change at the second measurement than in the initial measurement, which showed a statistically significant difference from the control group. After bleaching, the teeth treated with root canal sealers showed a greater whitening, with the control group also showing a significant difference, albeit with a smaller change. The findings suggest that bleaching treatment can effectively restore the desired tooth appearance after root canal treatment.
