Document Type : Original Article
Authors
1 General Authority for Health Insurance, Assiut
2 Oral Medicine, Periodontology Oral Diagnosis and Dental Radiology Faculty of Dental Medicine Al – Azhar University (Assiut branch
3 Professor of Oral Medicine, Periodontology Oral Diagnosis and Dental Radiology, Dean, Faculty of Dental Medicine, Al – Azhar University (Assiut branch).
4 Oral and Maxillofacial Surgery, Faculty of Dentistry, Assiut Universit
Abstract
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