TY - BOOK AU - Abou El Nasr,Hend Mahmoud AU - Negm,Maged M. TI - An evaluation of the biocompatibility and the sealing ability of a newly introduced resin-based obturating systems U1 - 617.6342 21 PY - 2008/// KW - Endodontics N1 - Supervisors : Maged M. Negm; Thesis (Ph. D.)-Cairo University, Faculty of Oral and Dental Medicine, 2008; Includes bibliographical references ER -