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

This article evaluated tooth discoloration after the use of calcium silicate based materials to examine the effect of internal bleaching on tooth discoloration. The specimens were randomly divided into two experimental groups (n = 45) and a control group (n = 6). Cavities were filled with ProRoot MTA (Dentsply Sirona) in Group 1 and Biodentine (Septodont) in Group 2. Color measurements were taken with a spectrophotometer before and after the application of materials at 1 week, 13 weeks, and 6 months. After 6 months, Groups 1 and 2 were divided into three subgroups according to internal bleaching techniques. All color change ratios and lightness differences were calculated using the CIE L*a*b* system. Data were analyzed using repeated ANOVA and Kruskal-Wallis test (P =.05). There were statistically significant differences between Groups 1 and 2 at all time intervals (P <.05). Group 1 showed more discoloration than Group 2 (P <.05). There were no significant differences between the bleaching agents (P >.05). Additionally, specimens in both groups became lighter than their initial color (P <.05). Teeth treated with ProRoot MTA exhibited darkening at 1 week that increased over time, whereas those treated with Biodentine maintained the lightness for 6 months.