The required time for the sealer to set, each tooth was divided into three sections at 3, 6, and 9 mm from the apex, and a scanning electron microscope was used to look at each section. G* Power Software v3.1 was used to measure each sample's marginal gap, and the Kruskal-Wallis test was followed by a post hoc Dunn's test for statistical analysis. Except for the middle third of root canals, where AHP, ES, and GF sealers showed a statistically significant difference, the results showed that there were no statistically significant differences in terms of the marginal gap between the two above mentioned obturation techniques for each sealer. In conclusion, when the shape of the root canal is not rounded, the thermo mechanical compaction of hydraulic sealers and gutta-percha ensures better sealing than the single-cone method.
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