Zirconium dioxide is an inorganic non-metallic material with high temperature resistance, wear resistance and corrosion resistance. Zirconia all-ceramic teeth are divided *** two production methods: manual manual and digital numerical control. The zirconia all-ceramic teeth processed by computer laser scanning, computer design, and three-dimensional numerical control machine tools (CAD-CAM technology) have extremely high adhesion. Metal-free zirconia all-ceramic restorations are a popular trend in international dental cosmetic restorations.