Noha Abdelmagied Said <br/><br/>
An Evaluation of the cleaning efficacy of protaper rotary files versus hedstrom hand files in the removal of Gutta-percha and Resilon obturating materials during root canal retreatment :   An in vitro study /  
 تقييم كفاءة التنظيف لمبارد البروتابر الدوارة مقابل مبارد هيدستروم اليدوية لاخراج الجتابركا والرزيلون فى اعادة علاج الجذور :   دراسة معملية 
Noha Abdelmagied Said ; Supervised Medhat Abdelrahmen Kataia , Hoda Abdelkader Saleh , Geraldine Mohamed Ahmed 
 - Cairo :   Noha Abdelmagied Said ,   2012 
 - 115 Leaves :   facsimiles ;   30cm 
<br/><br/>Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Endodontics 
<br/><br/> Objectives: The aim of this study was to evaluate the efficacy of protaper universal retreatment rotary files and hedstrom hand files for the removal of Gutta-percha/AHPLus and Resilon/ Epiphan filling materials during root canal retreatment. Materils and Methods: Eighty extracted human single-rooted teeth were instrumented with K-files and irrigated with 2.5% NaOCI followed by 17% EDTA and the last flush before obturation was by saline 
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<br/><br/><label>Subjects--Index Terms: </label>Hedstrom files  ProTaper Universal retreatment files  Retreatment