The properties and cutting performance of partial sintered Y2O3-stabilized tetragonal zirconia polycrystal (Y-TZP) have been introduced. Then, the CAD/CAM technological chain in the field of dental restoration, the basic grinding theory and technical equipment which are necessary for dental restoration have also been analyzed. Finally, an example for grinding molar crown using partial sintered zirconia has been provided, the specific processing are divided into two steps:1)using standard cylindrical dental diamond burs which is Ф1.6 mm to fabricate the molar crown with grinding parameters(spindle speed 40 000 r/min, grinding depth 0.2 mm, feed rate 300 mm/min)that have high material removal rate;2)using dental diamond burs with ball-end cone wheel, whose diameter is 0.8 mm, with spindle speed 40 000 r/min, grinding depth 0.06 mm, feed rate 100 mm/min, to fine grinding the surface of molar crown. After processing, the surface quality of the molar crown has been tested high and is consistent with the requirements of dental restoration.