Document Type : Original Article
Authors
1 B.D.S. Cairo University, 2006, Dentist at the Ministry of Interior..
2 Professor of Oral Medicine, Periodontology, Diagnosis and Oral Radiology. Faculty of Dental Medicine (Girls Branch) Al-Azhar University.
3 Assisstant Professor and Head of Pedodontics and Oral Dental Health Department. Faculty of Dental Medicine (Girls Branch) Al-Azhar University.
Abstract
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