TY - BOOK AU - Abou Auf,Eman A AU - Khairy ,Mohamed Adel Ezzat AU - Fahmy,Ola AU - Zidan,Omar TI - In vivo study on four different vital bleaching systems U1 - 617.6 21 PY - 2010/// KW - Dentistry, Operative KW - Surgery, Oral N1 - Supervisors : Mohamed Adel Ezzat Khairy, Ola Fahmy, Omar Zidan; Thesis (Ph.D.)-Cairo university,faculty of oral and dental medicine, 2010; Includes bibliographical references: pages108-115 ER -