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In vitro comparative study of the microbial leakage of one-step, thermafil and lateral condensation techniques
Hengameh Bakhtiar1, Neda Heidari, Peiman Mehrvarzfar
1Department of Endodontics, Azad University of Medical Sciences, Tehran, Iran.
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.
Insights
Lateral condensation showed less bacterial penetration than Thermafil and One-Step techniques, though differences weren't significant over 60 days. Thermafil and One-Step are effective endodontic obturation methods.
Area of Science:
- Endodontics
- Dental Materials Science
- Microbiology
Background:
- Achieving a predictable apical seal is crucial for endodontic treatment success.
- Various obturation techniques exist, each with potential advantages and disadvantages regarding sealing ability.
Purpose of the Study:
- To compare the apical seal effectiveness of three endodontic obturation techniques: lateral condensation, Thermafil, and One-Step.
- To evaluate microleakage using a bacterial microleakage model.
Main Methods:
- A two-chamber bacterial microleakage model was employed.
- Enterococcus faecalis served as the microbial marker.
- Bacterial penetration was monitored over a 60-day period, with leakage indicated by turbidity in the lower chamber.
Main Results:
- Lateral condensation exhibited 45% bacterial penetration, Thermafil 80%, and One-Step 75%.
- No statistically significant difference in microleakage was observed between the groups after 60 days.
- However, microleakage was detected later in the lateral condensation group compared to Thermafil and One-Step.
Conclusions:
- Thermafil and One-Step obturation techniques demonstrate effectiveness for predictable success in endodontic therapy.
- These obturators are suitable devices for achieving a reliable apical seal in root canal filling.
