Dental scaling, also called scaling, is a routine oral health care and treatment measure, so it is important to develop a good habit of regular scaling, preferably once every six months or so, and at the same time to check the condition of the teeth and find problems for timely treatment. Scaling is divided into ultrasonic scaling, sandblasting scaling and polishing, which have different principles and effects. Tooth calculus is the place where teeth hide dirt, and is often the focal point of periodontal inflammation, brushing bleeding is often caused by periodontal inflammation caused by dental calculus, ultrasonic scaling is through ultrasonic vibration, so that the calculus is loosened, easy to scrape the calculus. Sandblasting scaling uses high pressure airflow to spray solid salts onto the tooth surface to remove attachments on the tooth surface that are not easily scraped off, and these granular salts dissolve in the mouth. Polishing is the use of polishing paste to grind the tooth surface to make it smoother, reduce the attachment of dirt on the tooth surface, and taste better.