Comparative Fracture Resistance Analysis of Translucent Monolithic Zirconia Dioxide Milled in a CAD/CAM System

The aim of this study was to evaluate and compare the fracture resistance definitive zirconia dioxide restorations obtained using a computer-aided design manufacturing (CAD/CAM) system. Methods: Two groups ten samples were analyzed for each material (n: 20); first group Zolid Gen X Amann Girrbach (ZGX) second Cercon HT Dentsply Sirona (CDS). designed with identical parameters milled CAD/CAM Each specimen load tested at speed 0.5 mm/min, direction parallel major axis tooth an initial preload 10 N until universal testing machine (Universal/Tensile Testing Machine, Autograph AGS-X Series) equipped 20 kN cell. results recorded in Newtons (N), software connected machine. Results: Statistically significant differences found, monolithic crowns lower CDS (1744.84 ± 172.8 N) compared ZGX (2387.41 516 N). Conclusions: CAD-CAM showed sufficient when used posterior molar premolar zones either material, as they withstood loads greater than maximum masticatory force.