Orthodontic orthodontic treatment with or without tooth extraction needs to be decided based on the tooth alignment. Those with severe overcrowding and protruding tooth growth will need to have their teeth extracted in order to get straightened. Those with mildly uneven or protruding teeth may choose not to have their teeth extracted. When orthodontic treatment is performed for uneven or protruding teeth, many people are reluctant to undergo tooth extraction treatment. In fact, orthodontic treatment after tooth extraction can effectively correct uneven or protruding teeth deformities. In case of severe malocclusion, orthodontic treatment without tooth extraction is not effective in correcting malocclusion. With the further improvement of medical technology, orthodontics after tooth extraction is now commonly used. Clinically some patients orthodontics is necessary to extract teeth, patients with very serious teeth protrusion or crowding, need to extract teeth and then move the corresponding teeth to achieve the purpose of correction; for patients with overcrowded teeth, the teeth or periodontal abnormalities can be extracted, using the space of the extracted teeth to straighten the teeth, improve the bite and achieve the purpose of correction. Orthodontic treatment is recommended to go to a regular hospital and be treated at a professional orthodontist. Orthodontic treatment generally requires tooth extraction, which should be decided according to the individual dental malformation condition.