Document Type : Original Article
Authors
1 MSc degree student, Faculty of Dentistry - October University for Modern Sciences and Arts, Cairo, Egypt.
2 Professor of Endodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt.
3 Lecturer of Oral Pathology, Faculty of Dentistry, October University for Modern Sciences and Arts, Cairo, Egypt.
4 Lecturer of Endodontics, Department of Endodontics, Faculty of Dentistry, October University for Modern Sciences and Arts, Cairo, Egypt.
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