Document Type : Original Article
Authors
1 Dentist: Ministry of Health
2 Professor and Head of Oral Medicine, Periodontology, Oral Diagnosis and Radiology Department, Faculty of Den-tal Medicine (Boys, Cairo), Al-Azhar University
3 Professor of Oral Medicine, Periodontology, Oral Diagnosis and Radiology Department, Faculty of Dental Medi-cine (Boys, Cairo), Al-Azhar University
Abstract