Black stains on teeth cannot be removed by yourself. Black color on teeth may be due to pigmentation, plaque, etc. It may also be due to the occurrence of dental caries, which needs to be removed through oral irrigators, scaling, fillings, etc. 1. Oral irrigator: black stains on the teeth may be caused by chocolate and other food left on the surface of the teeth, which can be cleaned by using oral irrigators and brushing. 2. Scaling: black stains on the teeth may also be plaque, tobacco stains, tea stains and other pigmentation, this situation needs to go to the hospital stomatology application of the principle of ultrasonic oscillation to clean, the stains are serious need to cooperate with the sandblasting in order to completely clean. 3. Dental fillings: black stains on the teeth may also be caused by dental caries, this situation requires the use of high-speed turbine handpiece will appear caries black lesions on the dentin thoroughly clean, moisture sterilization and then use the resin and other fillings to fill the restoration. Black stains on the teeth can not be removed by themselves, it is best to go to the hospital stomatology examination to remove the causes of stains, and then take different treatments.