Currently, ultrasonic cleaning is the fastest way to remove dental calculus. 1. Calculus is the calcified plaque and tartar deposits attached to the surface of the teeth, its main component is calcium phosphate, which is difficult to remove by brushing. 2. Currently, the fastest way to remove calculus is ultrasonic cleaning. The principle of ultrasonic cleaning is to destroy and break the calculus through the high-frequency high-energy vibration produced by the ultrasonic waves, so as to make the calculus detached from the teeth. 3. It should be noted that, acute attack of disease, extreme weakness, female menstruation, pregnancy, heart disease patients, especially patients with pacemakers should not be cleaned, and also pay attention to oral hygiene and eat less spicy and stimulating food after cleaning. Therefore, patients with dental calculus should go to the regular medical institutions in time, with the help of the doctor for dental calculus cleaning.