The black spots on teeth are considered to be related to pigmentation and caries, and patients can seek medical treatment for supragingival scaling or other treatments. 1. Hyperpigmentation: For long-term smokers and coffee drinkers, the surface of the teeth may have hyperpigmentation. Pigmentation can usually be improved through supragingival cleaning. You should also reduce coffee intake and limit the number of cigarettes smoked in your daily life to help improve hyperpigmentation. 2. Caries: Dark spots caused by caries can be removed by brushing and flossing. Caries patients also need to follow the doctor’s advice with fluoride, silver ammonium fluoride and other drugs to control the degree of tooth damage. For those with severe caries, they can cooperate with the doctor to perform surgical treatments such as amalgam filling, composite resin direct bonding restoration, as well as remineralization therapy and fissure sealing treatment. It is recommended that those who have black spots on their teeth should go to the doctor for examination, and take treatment measures according to the doctor’s instructions after clarifying the cause of the disease. Pay attention to daily oral hygiene, rinse your mouth immediately after meals.