Document Type : Original Article
Authors
1 Assistant Lecturer of Dental Biomaterials, Faculty of Dental Medicine for Girls, Al-Azhar University, Egypt.
2 Professor of Dental Biomaterial, and Vice Dean of Post Graduated studies and Researches, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
3 Professor of Removable Prosthodontics, and Dean of Faculty of Dental Medicine for Girls Al-Azhar University, Cairo, Egypt.
4 Assistant Professor of Crowns and Bridges, Faculty of Dental Medicine for Girls, Al-Azhar University, Cairo, Egypt.
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