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