Document Type : Original Article
Authors
1 Assistant Lecturer at Pedodontics and Oral Health, Faculty of Dental Medicine Sinai University, Kantara Campus, Egypt.
2 Professor of Oral Medicine, Periodontology, Oral Diagnosis and Radiology Department Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
3 Associate Professor, Head of Pedodontics and oral Health Department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
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