Background& Objective: This study was carried out to test fracture resistance of crowns with Zirconia
core made by CAD/CAM of two thicknesses, and test the influence of decreasing the core thickness on its
fracture resistance, and study the patterns of failure.
Zirconia-based fixed dental prostheses have been suggested for use
in the posterior regions of the mouth as an alternative to traditional
metal ceramic FDPs because of its favorable mechanical properties0
The effect of framework design modificatio
ns in zirconia-based
FDPs is not fully understood. The aim of this study is to compare
the fracture resistance of Y-TZP zirconia FDPs with two different
framework design.
