Under normal circumstances, it is recommended that brushing your teeth 3 times a day is more appropriate. Brushing can be done after breakfast, lunch and dinner. The main purpose of brushing is to remove residual substances left in the crevices of the teeth after meals and to prevent the formation of bacteria or other harmful microorganisms from lingering and multiplying inside the mouth. Because bacteria and harmful microorganisms on the teeth will produce acidic substances, over time will cause damage to the tooth surface enamel, and cause the occurrence of many oral system diseases, such as dental caries, periodontitis, oral candidiasis, etc.. In addition, regular brushing measures can effectively reduce the formation of plaque, pigment and other substances attached to the surface layer of the teeth, thus preventing tartar, tartar and other conditions. The best time for daily brushing can be chosen within 15-30 minutes after breakfast, lunch and dinner to ensure better cleaning effect. It is recommended to master the correct way of brushing during daily brushing to avoid damage to teeth, gums, oral mucosa and other tissues due to excessive force.