The cleaning process of dental calculus is ultrasonic cleaning, sandblasting, polishing and so on. 1. Ultrasonic cleaning: ultrasonic cleaning machine is the use of electrical energy into kinetic energy principle, generating high-frequency vibration, the teeth around the calculus broken to remove the calculus attached to the surface of the teeth, in order to reduce the stimulation of calculus on the gums. 2. Sandblasting: put the right amount of sandblasting powder in the sandblasting gun, the main ingredient is sodium bicarbonate particles, through the pressure of the water vapor jet to the tooth surface, the teeth attached to the pigmentation, tobacco stains, tea stains, as well as the teeth of the gap between the small plaque thoroughly cleaned. 3. Polishing: After ultrasonic cleaning and sandblasting, then use the rubber cup on the tooth surface, the roots of the teeth for fine polishing, so that the tooth surface is smoother, reducing the adhesion of plaque. It is recommended that you go to a regular hospital stomatology department and follow the doctor’s instructions to receive treatment.