Document Type : Original articles
Authors
1 Master of Periodontics, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
2 faculty of dentistry ain shams university
3 Professor of Periodontics , Faculty of Dentistry , King Abdul Aziz University, Saudi Arabia and Faculty of Dentistry , Ain Shams University, Cairo, Egypt.
4 Associate Professor of Oral medicine, Periodontology and Oral Diagnosis, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
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