THE EFFECT OF CALCIUM SILICATE-BASED MATERIALS ON TOOTH DISCOLORATION AND EVALUATION OF COLOR CHANGE AFTER BLEACHING TREATMENT: A SPECTROPHOTOMETRIC STUDY.

This study investigated the effect of calcium silicate–based materials—specifically ProRoot mineral trioxide aggregate (MTA) by Dentsply Sirona and Biodentine by Septodont—on tooth discoloration and the efficacy of subsequent internal bleaching treatments. Using spectrophotometric analysis on extracted human incisors over six months, ProRoot MTA caused significant and progressive darkening starting at one week, while Biodentine maintained color stability. After removal of these materials, three bleaching protocols (sodium perborate, carbamide peroxide, and carbamide peroxide activated by diode laser) were applied, with no significant differences in bleaching effectiveness among them; all treated teeth became lighter than their original color. The findings suggest Biodentine may be preferable to ProRoot MTA regarding esthetic outcomes, and sodium perborate remains a reliable bleaching agent for discoloration induced by these materials. Further in vivo research is recommended to assess clinical implications.