Comparison of microleakage with three different thickness of Calcium Enriched Mixture(CEM) as a root-end filling material

Abstract

Surgical endodontic retreatment may be necessary if healing fails after conventional endodontic treatment or if conventional treatment cannot be performed. Different materials have been introduced for root-end filling purposes. The aim of this study was to evaluate the dye penetration in different thicknesses of CEM cement as retrograde filling material in root-end cavities prepared by Ultrasonic retrotips. Materials & Methods: After carrying out of root canal therapy in 70 human premolar teeth, 3 mm of their root ends was resected and root-end cavities were prepared by Ultrasonic retrotips in 1, 2, and 3 mm depth. The prepared cavities were filled by CEM cement and after immersing in Rhodamine B 2%, the dye leakage was assessed under stereomicroscope (16X). The collected date was analyzed by one-way ANOVA and Bonferoni post hoc test. P<0.05 was presumed significant in this study. Results: The mean Std. variance of 1, 2, and 3 mm groups were 3395.58 1893.442, 3410.47 1440.58, and 2581.65 1852.90, respectively. The one-way ANOVA analysis indicated that the difference between groups is statistically significant (P=0.000). But the Bonferoni post hoc test analysis revealed that only the difference between control group and other experimental groups was statistically significant (P=0.000). Conclusions: Based on the findings of this In-vitro study, there is not any difference among the sealing ability of different thicknesses of CEM cement as root- end filling material.