Black on teeth can be divided into two cases: 1, pigmentation on top of the teeth, such as frequent smoking, drinking tea, drinking some special drinks, or eating some food with special colors, all of which may cause the coloring on the tooth surface of the teeth. This kind of pigmentation can be better removed by sandblasting, polishing and scaling. 2, there is another kind of black on teeth, such as ink dip color, which has penetrated into the enamel or even dentin, and this is caries, that is, worm-eaten teeth. At this time, you need to go to professional dentistry for filling treatment of tooth decay in order to achieve better treatment effect.