By Amr M. Elnaghy, BDS, MSc, PhD,* and Shaymaa E. Elsaka, BDS, MSc, PhD†
From the *Department of Conservative Dentistry and Endodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt; and†Department of Dental Biomaterials, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
Address requests for reprints to Dr Amr M. Elnaghy, Faculty of Dentistry, Department of Conservative Dentistry and Endodontics, Mansoura University, Mansoura PC 35516, Egypt. E-mail address: aelnaghy@mans.edu.eg