Dental scaling for children is not harmful to teeth. Children have poor oral hygiene and cleanliness, and a large amount of food debris and soft tartar accumulates on the tooth surface, which can combine with saliva to form calculus and cover the tooth surface and neck. With ultrasonic scaling, tartar and exogenous pigments can be removed, restoring the original color of the teeth, while relieving swollen and bleeding gums, and reducing bad breath. The high-frequency vibrations of ultrasonic scaling produce a large number of oxygen molecules that break down anaerobic bacteria in the mouth, preventing redness and pain in the gums. The scaler may form slight scratches on the surface of the enamel, creating a rough feeling. Sandblasting and polishing will eliminate the scratches and keep the tooth surface shiny. Children can reduce the redness and pain of gums by enhancing oral hygiene and cleaning and reducing the retention of plaque.