Document Type : Original Article
Authors
1 DEPARTMENT OF ORTHODONTICS,FACULTY OF DENTISTRY, TANTA UNIVERSITY, EGYPT
2 Orthodontic Department, Faculty of Dentistry, Tanta University, Tanta, Egypt.
3 Oral medicine, Periodontology, Oral diagnosis & Radiology Department; Faculty of Dentistry, Tanta University
4 Department of Mechanical Engineering, National Research Centre, Cairo, Egypt.
Abstract
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