Abstract
Objective: To compare the discoloration potential of Endosequence Bioceramic Root Repair Material fast set putty (ERRMF) and ProRoot MTA (PMTA) when placed coronally in human extracted teeth over a 4-month period.
Methodology: Forty-eight premolars were sectioned 2 mm below the cen-lentoenamel junction.The pulp chambers were cleaned chemo-mechanically.The specimens were randomly assigned to three groups: PMTA, ERRMF, and no fill (control).Tooth color was measured spectrophotometrically at six time points: after material placement, after 2,4, 8, 12, and 16 weeks. Data were transformed into Commission Internationale de l'eclairage (CIE) L*a*b* system and color difference values (AL) were calculated. Specimen images were recorded for each time point. Three random specimens from experimental groups were sectioned longitudinally and examined under a stereomicroscope. For data analyses, we used one-way analysis of variance with repeated measurements and lukey's test (alpha = 0.05).
Results: At 2 weeks, the Delta E means did not differ significantly between the groups. At 4, 8,12, and 16 weeks, PMTA group exhibited a significantly higher Delta E compared with the ERRMF and control groups. The AL did not differ significantly between the ERRMF and control groups. leeth restored using PMTA exhibited a visually progress ve dark discoloration. 1 he control and ERRMF group specimens exhibited color stability. Sections of PMTA specimens revealed grayish discoloration ofthe material with dark dentinal staining that was not visible in the ERRMF specimens. Conclusion: Teeth restored using PMTA exhibited progressive discoloration, whereas teeth restored with ERRMF maintained color stability over a 4-month period.