Abstract
The aim of the study is to investigate the influence of the convergence angle of the tooth preparation and the wear of the burs used in a CAD-CAM system on the fracture strength (Ã) of Y-TZP-based all-ceramic restorations veneered by a feldspathic ceramic. The microstructure of the ceramics (In-Ceram YZ e Vita VM9) will be characterized using scanning electron microscopy (SEM) and EDS. Yo…