Document Type : Original Article
Authors
1 B.D.S, Faculty of Oral and Dental Medicine, Al Azhar University (2008).
2 Professor and Head of Operative Dentistry Department, Faculty of Oral and Dental Medicine for Girls, Al Azhar University.
3 Lecturer of Operative Dentistry Department, Faculty of Oral and Dental Medicine for Girls, Al Azhar University.
Abstract
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