Document Type : Original Article
Authors
1 BDS 2002 Ain Shams University- A resident in Master Degree program, Orthodontic Department, Faculty of dental medicine for girls, Al-Azhar University.
2 Assistant Professor, Orthodontic Department –Faculty of Dental Medicine for girls Al-Azhar University
3 Professor of ENT, Head of ENT Department –Faculty of Medicine for girls- Al-Azhar University
Abstract
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