الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
The purpose of this prospective, randomized clinical study was to compare the results of using low concentration of odium hypochlorite irrigating solution (1.3% NaOC1) with using high concentration of sodium hypochlorite irrigating solution (5.25% NaOCI) in decreasing postoperative pain. Fourty four patients were recruited with a posterior tooth
requiring primary endodontic treatment of non vital pulp