Document Type : Original Article
Authors
1 Assistant Lecturer at Pedodontics and Oral health department, Faculty of Oral and Dental Medicine, MTI university, Egypt
2 Professor of Pedodontics and Oral Health, Faculty of Dental Medicine for Boys, Al- Azhar University, Cairo, Egypt
3 Associate Professor of Pedodontics and Oral Health, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt
Abstract
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