TY - BOOK AU - Lamis Ali Hassan Alyazji AU - Atef Shaker Ibrahim , AU - Hesham Katamish , TI - Fracture resistance of different non-metallic core and post systems : : Comparative study / PY - 2011/// CY - Cairo : PB - Lamis Ali Hassan Alyazji , KW - Fracture resistance KW - Glass fiber post KW - Zirconia post N1 - Thesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics; Issued also as CD N2 - The aim of this study was to compare the fracture resistance of different aesthetic core materials supported by two different non - metallic posts covered with ceramic crowns . Thirty intact maxillary central incisors were selected . The crowns were decoronated 2 mm coronal to the most apical point of the labial CEJ . After root canal therapy , standardized preparation of the coronal portion of the teeth was done using a milling machine ER -