During the tooth changing period, the child's teeth are changing, the jaw is developing, and then the occlusal relationship is gradually established, and sometimes temporary malocclusion occurs. In the process of tooth development, they can often adjust themselves and return to normal. Some malocclusion deformities, such as the gap between the upper teeth caused by the low labial frenum position of the upper lip, cannot be adjusted by itself, which will affect the facial development. You should go to the hospital for treatment, otherwise it will affect the child's appearance. First of all, some children's tooth replacement deformities are not real dentofacial deformities. With the development of deciduous teeth and permanent teeth, the physiological function of the body will make these "deformities" disappear, so there is no need to correct them. Secondly, some children's front teeth are big and crowded when they grow out, which is not in harmony with the proportion of face and alveolar bone. If you find the above phenomenon, you must take your child to the hospital for examination and decide as soon as possible whether it is necessary to pull out the deciduous teeth first and then the permanent teeth. Third, if a child changes his teeth for the first time, if his upper incisors protrude slightly forward and have problems biting his lower lip or licking his teeth, parents can not only educate him to overcome bad habits, but also teach him to hold paper on his upper and lower lips, pull his mouth with his hands, shut up hard, play the flute and strengthen his lip muscles. Fourth, always remind children to protect their front teeth and avoid falling. Fifth, the time required for orthodontic treatment of dentofacial deformities usually ranges from several months to several years, which varies with the age, deformity type and degree of children. The correction of dentofacial deformity is to act on the deformed or dislocated teeth by corrective force, which causes the changes of dentofacial tissue, thus interrupting abnormal development and leading to normal development. After orthodontic treatment, the new balance and coordination relationship between tooth occlusion and muscle function needs to be consolidated for a period of time before it can be stable. So correction actually includes two stages: treatment and maintenance. If there is no retention period, the appliance will be pulled out when the teeth are arranged, and the deformity will soon revive. Note 4: Malocclusion of teeth will affect the child's appearance. During the tooth changing period, the teeth are replaced, the jaw is developing, and then the occlusal relationship is gradually established. Sometimes there will be temporary malocclusion, and in the process of tooth development, it can often adjust itself and return to normal. Some malocclusion deformities, such as the gap between the upper teeth caused by the low labial frenum position of the upper lip, cannot be adjusted by itself, which will affect the facial development. You should go to the hospital for treatment, otherwise it will affect the child's appearance. Note 6: When changing teeth, eat chewy food. When the child is about six or seven years old, permanent teeth will begin to sprout one after another, replacing the original deciduous teeth. Although some children's permanent teeth have erupted, primary teeth often refuse to "give way", forcing permanent teeth to grow out of the inner side of primary teeth, forming "double-layer teeth", resulting in irregular arrangement of permanent teeth. There are many reasons for the delay in extraction of deciduous teeth. The most common thing is that children eat too carefully and do not give full play to the physiological stimulation of teeth. The main function of teeth is to chew food, which can promote the growth, natural absorption and shedding of milk roots. Therefore, with the growth of children's age, children should eat more chewy food to maintain a good stimulating effect on deciduous teeth and urge them to fall off on time. When the child's front teeth and back molars have erupted, you can add some celery, corn, apples and other foods to make the tooth change complete smoothly and let the child have a healthy and tidy tooth.