Dental powder usually can not remove calculus, if you want to remove tartar and calculus, you can choose supragingival cleaning, subgingival scraping. 1. Gingival cleaning: this method is mainly the use of related machinery or hand cleaner for cleaning, such as sonic cleaning, sonic vibration process can be shattered calculus, while sandblasting can also remove attached to the surface of the teeth plaque, so that the teeth back to clean. 2. Subgingival scraping: the same operation mode as gingival cleaning, more suitable for removing subgingival calculus, plaque; for periodontal disease and other diseases have obvious treatment effect. After removal, periodontal pockets are rinsed with hydrogen peroxide to clean up any remaining debris. In order to better remove calculus and tartar, you should also pay attention to oral hygiene, brush your teeth every morning and evening on time, and clean up food residues after meals to avoid food impaction. If you have any questions about the treatment process, it is recommended that you consult your doctor, and for those who do not get good results from one treatment, you can have multiple treatments.