Patients need to do porcelain veneers depending on the patient, there are the following: 1, patients do porcelain veneers is for the overall aesthetic transformation, such as fluorosis, tetracycline teeth or teeth are not very neat patients, want to do porcelain veneers to change the color, shape, alignment of the teeth, the operation is more time-consuming, need to take a model first, and then do a study model on the model, to show patients first, patients think they can operate again; 2, directly can Patients who start, porcelain veneers such as the official start to do, there are basically two times. The first time, the doctor directly tooth grinding and cutting, colorimetric, and then give the patient a temporary veneer, temporary nano-resin to make a veneer to cover the facade, about 1-2 weeks, the official veneer is done, the patient came on time to review, the official veneer replacement, sticky, polished, in place.