الفهرس 
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Abstract
The aim of this study was to compare postoperative pain using 1.3% and 5.25% sodium hypochlorite irrigating solution in two-visit root canal treatment at different time intervals: preoperative, immediately post-instrumentation, after 3 hours, 24 hours, 48 hours and 7 days post-instrumentation and post-obturation utilizing a modified visual analogue scale (VAS).