RESULTS
pain
In this study, the mean age of patients was 30.90 years (±7.72) and 62.5% of them were male, and 37.5% were female. In Table Distribution of patients by age, sex, and VAS scores before treatment.Abbreviations: ANOVA, analysis of variance; VAS, visual analog scale.For qualitative variables Chi‐square test was used and for quantitative variables, the ANOVA test was used.According to Table Means and standard deviations of changes in patients' VAS pain scores over time.Abbreviation: VAS, visual analog scale.

Means and standard deviations of changes in patients' VAS pain scores over time. VAS, visual analog scale.With Bonferroni test, comparing the times of pairs in Table Comparison of the studied times two by two.Abbreviation: VAS, visual analog scale.Bonferroni tests were used to show the differences between every two‐time point.In Table Distribution of patients in different groups of irrigation solutions and time intervals after treatment in terms of median and first and third quartiles of pain scores.Friedman's nonparametric test was used to compare the intragroup mean score of pain over time and Kruskal–Wallis for comparing the intergroup mean score.According to Table Distribution of patients in different groups of irrigation solutions and time intervals after treatment in terms of median and first and third quartiles of analgesics used.Friedman's nonparametric test was used to compare the intragroup mean score of pain over time and Kruskal‐Wallis for comparing the intergroup mean score.As part of this study, we examined the samples on periapical radiographs to determine if overfill had occurred but there was none.