Background: Forty, human, maxillary single-rooted teeth with mature apices were selected. The access cavities were prepared and the working length was determined by placing a 15 K file 1mm short of the apex. All teeth were instrumented at the working length to a 50K file and were irrigated with 2mL of 2.5 % sodium hypochlorite solution. Following instrumentation, the experimental IRC were created. The mounted specimens were randomly separated according to the obturation technique into two groups, Group I- lateral condensation, group II- thermoplasticized obturation. Teeth were sectioned at 7 mm from the apex. Then sectioned root were examined under a dissecting stereomicroscope.(10X magnification) and evaluated by Wardhan India Make with image analysis system MVIG 2005.
Results: It is seen that teeth obturated with Hot-Shot obturating technique Shows show better results then lateral condensation technique.
Conclusion: Within the limitations of my study I like to conclude that to obturate internal resorption cavities thermoplasticized obturartion technique are superior then that of traditional lateral condensation technique.
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