If there are black stains on the teeth, if the black stains are more scattered, you can choose the polishing method to remove them, you can generally use polishing paste and polishing cup to polish, which can remove the black stains on the teeth. If there are more black stains on the teeth, this situation can choose to use the scaling method to remove, and scaling is generally the use of ultrasonic shock, scaling is generally recommended to clean once every six months to a year, routinely everyone needs to be scaled, and there is periodontal disease also needs to be long-term, indirect observation and cleaning. In general, it is recommended to do subgingival scaling, which can maintain periodontal health. In addition, if there are black stains on the teeth that cannot be completely removed and cavities are found during the visit, in this case a filling is needed, and the materials commonly used for filling are glass ionomer and composite resin.