DOI: 10.36347/sjds.2019.v06i11.002

Pages: 479-483

Aim: The aim of the study was to evaluate the efficacy of 1% peracetic acid, 17% EDTA, 3% NaOCl and 10% citric acid in the removal of calcium hydroxide from the root canals, coupled with passive ultrasonic activation. METHOD: 40 freshly extracted human single rooted teeth were selected. Teeth were decoronated to standardize the root length to 15mm.Working length was determined and biomechanical preparation was done using ProTaper rotary instruments. The canals were irrigated, and filled with calcium hydroxide paste using lentulospiral. The samples were divided into 4 groups depending on the final irrigation sequence. Group 1: 3ml of 17%EDTA with PUI .Group 2: 3ml of 3 % NaOCl with PUI. Group 3: 3ml of 1%peracetic acid with PUI. Group 4: 10% citric acid with PUI. The roots were split longitudinally and viewed under stereomicroscope at 30X magnification. RESULTS: Results showed that 1% peracetic acid was superior in the removal of calcium hydroxide from the root canals when compared to other groups. CONCLUSION: 1% peracetic acid was superior in the coronal, middle and apical third of the root canal followed by 17% EDTA, 10%citric acid and 3% NaOCl.