Dental calculus can be removed by means of scaling. 1. For the calculus that has been formed at the root of the teeth, it is difficult to remove it by brushing; patients can go to professional dental hospitals to use ultrasonic scaling to remove the calculus; this method is mainly through the high-frequency vibration of the ultrasonic equipment to remove calculus from the surface of the teeth, and subgingival calculus needs to be scraped by hand with an instrument. 2. After scaling can be carried out according to the situation of tooth polishing, which can not only make the teeth become whiter, but also can make the growth of dental calculus slow down. Patients should choose regular professional hospitals when scaling, in order to effectively avoid the occurrence of adverse symptoms.