Document Type : Original Article
Authors
1 B.D.S. 2010G Faculty of Dental Medicine University of Science and Technology –Sana’a-Yemen.
2 Professor of Oral Medicine, Periodontology, Diagnosis and Radiology department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt
3 Associate Professor of Oral Medicine, Periodontology, Diagnosis and Radiology department, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt
Abstract
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