Electric toothbrush refers to the effect of cleaning the mouth by impacting the teeth with pulsed water flow. Using electric toothbrush can effectively clean teeth, remove dental plaque and food residues on the surface of teeth, massage gums, promote blood circulation of gums, and enhance the disease resistance of periodontal tissues. When using an electric toothbrush, the brush head of the toothbrush will turn into a throttle, which can clean up the food residues and plaque on the surface of the teeth by squeezing. In addition, the impact of electric toothbrush is large, which can effectively clean gums and remove dental plaque and calculus on the surface of the gums. If there are food residues on the teeth and they are not cleaned up in time, it will easily lead to dental plaque and calculus on the surface of the teeth, which may cause gingivitis, periodontitis and other diseases. The use of electric toothbrush can effectively remove dental plaque and calculus on the surface of teeth, and prevent gingivitis, periodontitis and other diseases.