Authors
1 B.D.S, Faculty of Dentistry and Oral Medicine Cairo University (2003).
2 Professor and Head of Oral Medicine, Periodontology, Diagnosis and Radiology Department, Faculty of Dental Medicine, for Girls, Al Azhar University, Cairo. Egypt.
3 Lecturer Of Pediatric dentistry and dental public health, Faculty of Dental Medicine, for Girls, Al-Azhar University,
4 Lecturer Of Pediatrics, Faculty Of Medicine, Cairo University
Abstract
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