Document Type : Original Article
Authors
1 (B.D.S) 2007G. Faculty of Dental Medicine. AL-Azhar University (Assuit branch).
2 Professor, Pedodontics and Oral Health Department, Faculty of Dental Medicine, Boys-Cairo, Al-Azhar University.
3 Assistant Professor, Pedodontics and Oral Health Department, Faculty of Dental medicine, Boys, Cairo, AL-Azhar University.
4 Lecturer, Department of Microbiology, Faculty of Pharmacy, Al-Azhar University, Assuit
Abstract