Preferably 12 to 18 years old. After tooth replacement, permanent teeth are growing, and bones and teeth are developing. At this time, correction is the best. However, after all, it is best to go to a regular hospital to find a professional orthodontist, even at other ages. Teeth are the key parts that affect the beauty of the human body, and there is even a saying that "whole teeth are comparable to plastic surgery". Indeed, when children's teeth look bad, they should not be ignored. They should have a plan to correct their teeth as soon as possible and choose the right time.

Before the age of 6, children's teeth are deciduous teeth. Once the child is found to have obvious deformities such as deciduous teeth and malocclusion, it must be corrected in time. Early correction at the age of 3-6 can be done by wearing removable braces in the mouth. If "half-mouth correction" is carried out, it is very likely to destroy its original locking relationship. In the long-term operation, the uncoordinated collision between teeth will cause problems such as tooth cracking, early contact, occlusal trauma, decreased chewing function, temporomandibular joint disorder and so on.

During the deciduous period, any factors that are not conducive to the normal growth and development of the whole body and oral cavity may lead to abnormal tooth development, eruption, arrangement and occlusion, thus causing abnormal development of jaws and faces and affecting the facial beauty of individuals. Such as sucking your fingers, licking your tongue, spitting out your tongue, sticking out your tongue, biting your lower lip, chewing sideways, and breathing with your mouth open. Parents should pay attention to helping their children get rid of these habits as soon as possible. If you find that these bad habits have caused certain changes to your child's face or mouth, please seek medical advice as soon as possible. The treatment is mainly prevention and blocking.

In infancy, from birth to three years old, the maxillofacial region has a period of rapid growth and development. Its growth rate is very fast at birth, then slowly decreases, and the growth rate is the lowest at the age of three. There is no age limit for orthodontics, and adults can also correct their teeth. Clinically, a 48-year-old orthodontist has also achieved ideal results, so orthodontics is not the latest, but there is an "optimal orthodontic age stage" in the growth of children.