Document Type : Original Article
Authors
1 Department of periodontology and oral medicine, Faculty of Dental medicine,Alazhar university (boys), Cairo , Egypt
2 Department of periodontology and oral medicine, Faculty of Dental Medicine (boys),Cairo,Egypt
3 Department of Oral Medicine, Periodontology, Diagnosis and Oral Radiology Faculty of Dental Medicine, Boys, Cairo, Al-Azhar University
Abstract
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