TY - GEN AU - Khaled Ali Taha Elbanna AU - Ahmed Naguib Hussien , AU - Mona Attia ElAgroudi , TI - Retention of selected core materials to Two types of zirconia posts / PY - 2006/// CY - Cairo : PB - Khaled Ali Taha Elbanna , KW - Celay KW - Composite KW - Tps empcess KW - Zirconia posts N1 - Thesis (M.Sc.) - Cairo University - Faculty Of Oral and Dental Medicine - Department Of Prosthodontics; Issued also as CD N2 - A total number of thirty sample prior to the development of non - metal post systems cast metal posts and stainless steel post systems were commonly used as the treatment of choice for pulpless teeth The increasing demand for aesthetic posts and cores has led to the development of metal - free post and core systems specifically zirconia and fiber reinforced postsThese new posts have been developed to improve light transmission and the optical effects of aesthetic restorations ER -