CAD/CAM System Vs. Laser Milling Zirconia For Fixed Restoration Construction; Narrative Review

TZP ceramic has excellent mechanical properties at roomtemperature; therefore, it is considered the best choice for ceramic restorations Depending on the temperature, unalloyed Zirconia takes one of three crystalline forms: monoclinic, tetragonal, or cubic. Among the three crystal types, tetragonal Zirconia has the best mechanical characteristics. Various oxides (such as CaO, MgO, Y2O3, or CeO2) are employed to achieve a stable tetragonal phase in Zirconia at room temperature To assess phase stability, transformability, and mechanical properties, these oxides should be introduced in an appropriate amount Because of its comparatively tiny grain size and four-directional monoclinic phase transition, the 3 mol percent yttria-stabilized tetragonal Zirconia polycrystalline (3Y-TZP) possesses exceptional mechanical properties.