Document Type : Original Article
Authors
1 Demonistrator of Oral and Dental Biology, Faculty of Dental Medicine for Girls, Al- Azhar University.
2 Professor and Head of Oral and Dental Biology Department, the Former Dean of Faculty of Dental Medicine for Girls, Al- Azhar University.
3 Assistant Professor of Oral and Dental Biology, Faculty of Dental Medicine for Girls, Al- Azhar University.
Abstract
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