Authors
1 B.DS. Faculty of Misr University for science and technology, Egypt.
2 Lecturer of Oral Medicine, Periodontology, Oral Diagnosis and Dental Radiology Department, Faculty of Dental Medicine for Girls, Cairo, Egypt.
3 Assistant professor of public health and community medicine Faculty of Medicine for Girls Al-Azhar University, Cairo, Egypt.
4 Professor of Oral Medicine, periodontology, Oral Diagnosis, and Dental Radiology Department, Faculty of Dental Medicine for Girls Al-Azhar University, Cairo, Egypt
Abstract
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