Abstract
Background and Objectives: One of the common matrials as a root-end filling is Mineral trioxide aggregate that has different usages in Endodontics. The purpose of this study was to compare the microleakage of gray and White MTA as a root–end filling material.
Materials and Methods: 50 single–rooted teeth were divided into two experimental groups of 20 teeth each and two positive and negative control groups of 5.
After cleaning, shaping, obturation an cutting away of 3 millimeter from the apex, 3 mm deep preparations were made. The root–end preparation of experimental groups were filled with white MTA and gray MTA. In positive and negative control groups no material was placed. Leakage was determined using a dye penetration method. Leakage was observed with a stereomicroscope at 16 magnifications. Accuracy of 0.1 mm was used for measurements. Data was analyzed using the ANOVA test at the 0.05 level of significance.
Results: Amount of leakage was zero and 3 mm in negative and positive control groups, respectively .The mean leakage was 0.5 mm in the white MTA and 0.3 mm in the gray MTA. There was not any significant difference between two experimental groups (P=0.14).
Conclusion: There was not any difference between apical leakage when we used white and gray MTA as a root-end filling material in this in vitro study.