Document Type : Original Article
Authors
1 Dentist at Ministry of health and population, Cairo, Egypt
2 Professor of Endodontics, Endodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University. Professor and Head of Endodontic Department, Future University in Egypt ( FUE ), Cairo, Egypt
3 Lecturer of Endodontics, Endodontic Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt
Abstract
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