Affiliation: | 1. Professor and Head of Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Minia University, Minia, Egypt;2. General Manager of Cranio-Maxillofacial Surgery Unit, Faculty of Dentistry, Minia University, Minia, Egypt;3. Director of Shifa Oral and Maxillofacial Surgery Center, Cairo, Egypt;4. Lecturer, Oral and Maxillofacial Surgery Department Faculty of Dentistry, Beni Suef University, Beni Suef, Egypt |