If the teeth do not look good, the following treatment measures can be taken: I. When there are malocclusions such as sparse teeth, crowding, double (dentition) protrusion, or reverse (dentition), fixed or invisible orthodontic treatment can be used to align the teeth, flatten the dental arches, and inwardly retract the anterior teeth, so as to make the upper and lower dentition establish the occlusal relationship of shallow overlap and shallow cover, and at the same time correct the facial shape to a straight face, which can be combined with integrative surgical procedures if necessary. If the crowns are too small or too big to affect the aesthetics, the teeth can be prepared and then made into all-ceramic or resin veneers. Third, with fluorosis, tetracycline and other affect the color of the teeth, you can grind off the discolored tooth tissue, making porcelain or all-ceramic crown restoration, to restore the normal color and shape.