To determine the proper values of process parameters when milling the pre-sintering zirconia denture,the optimization calculation is made to increase the material removal rate and decrease the surface roughness by using the ideal point method,minimum deviation method and linear combination method in finish milling process.Taking molar crown upper surface milling as a project for finding the suitable tool path planning method,the path planning is made by UG CAM. The cavity milling following periphery plannin...