The reason for the formation of dental plaque is more complex, and many factors have a certain relationship, such as poor hygiene habits, bacterial action. 1. Human oral saliva China contains proteins, proteins rely on electrostatic interactions, thus selective deposition, attached to the tooth surface, and then due to bacteria, cocci, filamentous bacteria and other bacteria adhere to, thus carrying out a series of material metabolic activities, the formation of dental plaque. 2. Dental plaque itself is a bacterial ecological environment that exists on the surface of the teeth and in the periodontal pockets, in which the bacteria will grow, reproduce and die, and at the same time, they will carry out complex material metabolic activities. If you don’t pay attention to oral hygiene and don’t love brushing your teeth, plaque will easily be formed. The reason for the formation of plaque is more complex, it is recommended that patients can go to the hospital for scaling treatment to remove plaque, so as to improve the periodontal environment and stabilize the periodontal function, and also pay attention to brushing the teeth to reduce the formation of plaque in normal life.