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      In vitro comparative study of the microbial leakage of one-step, thermafil and lateral condensation techniques.

      The journal of contemporary dental practice
      Dental Bonding, Dental Leakage, microbiology, Dental Pulp Cavity, Edetic Acid, therapeutic use, Enterococcus faecalis, isolation & purification, Gutta-Percha, chemistry, Humans, Humidity, Materials Testing, Root Canal Filling Materials, Root Canal Irrigants, Root Canal Obturation, instrumentation, methods, Root Canal Preparation, Sodium Hypochlorite, Temperature, Time Factors, Tooth Apex

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          Abstract

          To compare the apical seal of lateral condensation technique, thermafil and one-step by using this model. 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. 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. Thermafil and one-step obturator can be advocated as effective obturation techniques for achieving predictable success in endodontic therapy. Thermafil and one-step obturator are suitable devices for obturation.

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