Brushing is an important way to remove plaque, soft tartar and food debris with a toothbrush to keep the mouth clean, and it is also the most important means to remove plaque and prevent the occurrence, development and recurrence of periodontal disease. 1, the period of new teeth: when babies start to grow their first teeth, they should “brush their teeth The baby should be “brushed”. The brushing here does not use a toothbrush, but parents wrap their index finger in clean water with clean gauze to help wash the baby’s mouth, wash away the teeth and dental bed attachment, you can also buy special gauze or silicone finger cover; 2, after 1 year old: from 1 year old onwards, or when more teeth erupt in the mouth, parents should choose the toothbrush for young children to use at this age, brush their teeth every morning and evening and gradually guide Children like and cooperate with brushing; 3, preschool: preschool children, that is, about four years old have gradually mastered the fine hand movements, have a certain understanding, the ability to express, should be able to complete the toothbrushing action independently. Parents’ patience and guidance will help them master the method quickly. However, at this time, children lack initiative and self-consciousness, sometimes the method of brushing teeth is not in place, parents usually have to play a supervisory role to guide the child to develop good oral hygiene habits, and gradually achieve independent brushing. In addition to brushing, parents should check their children’s teeth regularly and treat them promptly after discovering tooth decay or other dental problems.