When you find that your child’s teeth are misaligned, some parents think that all you have to do is go to an orthodontist for treatment, but that’s not entirely true. There is a specialty in orthodontics, namely orthodontics. Children in the growth period, the jaws and craniofacial structures where the teeth are located are constantly growing and changing, so orthodontics should also be a dynamic process, which requires orthodontists to have a comprehensive knowledge of dental, jaw, craniofacial growth and development, and must also have a considerable foundation in oral aesthetics. As different types of malocclusion, or even the same type of malocclusion, the pathogenesis of different patients is not the same, which determines its orthodontic methods, treatment intervention time is different. For some malocclusions (such as crowding caused by tooth replacement disorder, malocclusion caused by bad habits), some simple treatments can be taken at an early stage to stop the occurrence and development of malocclusion in a very short period of time and achieve twice the result with half the effort. For example, some abnormal jaw development, there is still a lot of room for growth improvement in the early growth and development, early correction can make the child’s jaw and facial skeletal structure back to normal, to avoid the development of serious bone deformity later and must use surgical treatment. However, in some serious bony deformities (such as bony backbite of the jaw with family history), the growth trend and severity are beyond the ability of orthodontic intervention, and it is difficult to correct them no matter what treatment is used in the early stage. The most important point is not to generalize that all patients should wait until after tooth replacement to undergo orthodontic treatment, but to seek medical attention early after discovering the child’s dental problems to avoid missing the best time for orthodontic treatment. Since orthodontic treatment requires tooth extraction in 60% of patients, parents may want to consult an orthodontist first when a child has severe decay with misaligned teeth. If orthodontic treatment requires extraction, the orthodontist will choose to remove the unhealthy teeth first, so as to avoid excessive or unnecessary treatment of dental caries. For example, if some teeth are missing due to trauma or caries, orthodontic treatment can be used to replace the missing teeth with adjacent teeth to avoid denture repair.