Document Type : Original Article
Authors
1 Endodontic Specialist at General Organization for Teaching Hospitals &Institutes, Cairo, Egypt.
2 Professor of Endodontics, Endodontic Department, Faculty of Dental Medicine for Girls Al- Azhar University, Cairo, Egypt.
3 Professor of Endodontics, Endodontic Department, Faculty of Dentistry Ain-Shams University, Cairo, Egypt.
Abstract
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