Document Type : Original Article
Authors
1 Assistant Lecturerof Pedodontics and Oral Health, Faculty of Dental Medicine for Girls, AlAzhar University.
2 Professor of Endodontics,Faculty of Dental Medicine for Girls, AlAzhar University.
3 Associate Professor of Pedodontics and Oral Health, Faculty of Dental medicine for Girls , AlAzhar University.
Abstract
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