Document Type : Original Article
Authors
1 Assistant Lecturer of Oral Medicine, Periodontology, Oral Diagnosis and Radiology Department Faculty of Dental Medicine for Girls, Al-Azhar 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 Professor of Orthodontic Department Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
4 Professor of maxillofacial surgery Department Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
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