Aqrabawi, J Prevalence of post-treatment pain after cleaning and shaping of the root canal system using manual step-back versus rotary nickel titanium. [electronic resource] - Odonto-stomatologie tropicale = Tropical dental journal Mar 2006 - 5-9 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0251-172X Subjects--Topical Terms: AdolescentAdultFemaleHumansMaleMiddle AgedNickelPain, Postoperative--epidemiologyPrevalenceRegression AnalysisRoot Canal Preparation--adverse effectsRotationTitanium