In vitro Comparative Study of the Microbial Leakage of One-step, Thermafil and Lateral Condensation Techniques

Abstract

Aim:To compare the apical seal of lateral condensation technique, thermafil and one-step by using this model. Materials and methods:A two-chamber bacterial microleakage model using E. faecalis as microbial marker was used for evaluation of the leakage. Bacterial penetration was monitored over a 60-day period. Leakage was recorded when turbidity was observed in the lower chamber.Results: After comparing the bacterial penetration values, total penetration was observed 45% in lateral condensation technique, 80% in thermafil and 75% in one-step. There was no significant difference between groups after 60 days; however, the microleakage in lateral condensation group was seen later than one-step and thermafil. Conclusion:Thermafil and one-step obturator can be advocated as effective obturation techniques for achieving predictable success in endodontic therapy.Clinical significance: Thermafil and one-step obturator are suitable devices for obturation.

Use of fluid filtration method to evaluate the effect of master cone size on the apical seal of severely curved root canals

“…In the present study, the resin-based sealer AH26 was used in the proper manner. Different techniques are used to evaluate canal obturation quality, including dye penetration (23), clearing (24), bacterial penetration (25), and cone-beam computed tomography (CBCT) (20). In the present study, microleakage was evaluated by the fluid filtration method, as in a study by Moradi et al (6).…”