Document Type : Original Article
Authors
1 Demonstrator of Oral Medicine, Periodontology, Diagnosis and Oral Radiology Faculty of Dental Medicine, AL-Azhar University, Assiut.
2 Assistant professor and head of Oral Medicine, Periodontology, Diagnosis and Oral Radiology Faculty of Dental Medicine, AL-Azhar University, Assiut.
3 Professor of Oral Medicine, Periodontology, Diagnosis and Oral Radiology, Dean Faculty of Dental Medicine, AL-Azhar University, Assiut.
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