Methods: A total of 55 single-rooted human teeth were divided randomly into three experimental (n = 15) and two control groups (n = 5). Following standardised preparations, the teeth were obturated with GuttaFlow, Resilon/Epiphany or Gutta-percha/AH26. A two-chamber bacterial model using Enterococcus faecalis was employed to assess bacterial apical leakage for a period of 60 days.
Results: Kruskal–Wallis statistical test showed no significant difference between the bacterial seals of root canals obturated with GuttaFlow, Resilon/Ephiphany or Gutta-percha/AH26.
Conclusion: According to the results of the present study, there is no difference between apical microleakage in root canals obturated with GuttaFlow and Resilon/Epiphany or Gutta-percha/AH26.
Key words: Bacterial apical leakage, GuttaFlow, Gutta-percha/AH26, Resilon/Epiphany.