Tooth protrusion can be adducted by correction. The specific collection method depends on the individual's specific situation. For example, some patients need to extract teeth to gain space and retract their teeth. In this case, the price will be higher because the cost of tooth extraction is included. However, for some patients with a relatively small degree of crowding, it is not necessary to extract teeth, or to open the space of adduction of anterior teeth by cutting adjacent surfaces. The specific situation needs to go to the department of stomatology of Meilai-Hospital for examination, take a film model to measure the volume, and then get the correction plan. The convexity of the posterior lip of adducted anterior teeth will be improved.