When there are cracks on the teeth, the following treatment can be done: 1. 1-2 superficial cracks on the surface of the teeth will not affect the aesthetics, and the teeth have no obvious symptoms, so they can be treated without treatment. If the cracks appear in the enamel layer and are accompanied by pigmentation, they can be removed with a smooth needle and polished. 3. If the cracks reach the dentin layer and cause sensitivity to cold or hot stimuli, the cracks can be removed and filled with composite resin. 4. pain, dental preparation should be performed to make all-porcelain or porcelain crown restoration to avoid tooth cracking.