Document Type : Original Article
Authors
1 Assistant Lecturer at Pedodontics and public Health Department, Faculty of Dental Medicine, October 6th Universit, Cairo, Egypt.
2 Professor of Endodontics Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
3 Associate Professor and Head of Pedodontics and Oral Dental Health Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
Abstract
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