Document Type : Original Article
Authors
1 department of oral and maxillofacial surgery, faculty of dentistry, Badr university in cairo
2 oral and maxillofacial Surgery department Faculty of Dental Medicine for Girl’s Al-Azhar University
3 professor of oral and maxillofacial surgery
4 Department of Oral&Maxillofacial Surgery, Faculty of Dental Medicine for Girls, Al-Azhar University,Cairo,Egypt and College of Dentistry, Taibah University, KSA
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