الفهرس 
ACKNOWLEDGMENTOnly 14 pages are availabe for public view
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Abstract
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 2mm 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.