Document Type : Original Article
Authors
1 Teaching Assistant at Egyptian Russian University. B.D.S. (2014), Misr International University, Cairo, Egypt.
2 Professor of Oral medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
3 Lecturer of Oral medicine, Periodontology, Oral Diagnosis and Radiology, Faculty of Dental Medicine for Girls, Al Azhar University, Cairo, Egypt.
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