? Crowded dentition easily leads to food residue between teeth, which is not easy to clean and is easy to hurt teeth. Because teeth are uneven, it will lead to abnormal tooth development, and tooth deformity will often become more and more serious. Moreover, patients with crowded dentition can easily lead to symptoms such as gingival inflammation and dental caries. Therefore, it is necessary to correct dentition crowding as early as possible in daily life. ? The correction of dentition crowding is mainly divided into mild dentition crowding correction (braces orthodontic correction), moderate and severe crowding correction (meiosis extraction combined with orthodontic appliance), and the best method to repair orthodontics-beauty crown technique. The following is the introduction of experts. Correct dentition crowding 1. Orthodontic correction of braces: for mild dentition crowding, clinical dentition crowding often manifests as torsional dislocation of upper and lower incisors or slight labial dislocation of canine teeth, and braces are generally used for orthodontic correction. Correction of dentition crowding II. Meiosis extraction combined with appliance: for the correction of moderate and severe crowding, meiosis extraction combined with appliance is generally used to treat moderate and severe crowding. Because the growth and development of adults have been completed, the metabolic rate has slowed down and the biological reactivity has decreased, it will take longer to correct the congestion of dentition in adults than in children. Correction of dentition crowding. Beauty crown technique: The method of German 3D beauty crown is the best method to repair orthodontics at present, and it can also achieve good therapeutic effect for adults. Because the teeth and bones of adults have matured, the effect of orthodontics is not obvious, and it is easy to rebound after correction. Meiguan tooth beauty technology is a new tooth beauty technology. On the basis of traditional porcelain teeth, the cosmetic effect of teeth was emphasized, and professional methods were applied to the clinical crowns of dislocated teeth and deformed teeth. Finally, beauty crown was used to restore them. It has the advantages of no tooth extraction, no pain, short time, firm teeth and no black line in gums after many years, so as to achieve a life-long guaranteed tooth beauty effect. The above is an introduction. Attention must be paid to crowded dentition, so as to achieve early treatment. Crowded dentition will affect the cleaning of teeth, weaken the self-cleaning effect of teeth, and also affect the occlusal relationship between upper and lower teeth, thus affecting the normal chewing function and reducing the chewing efficiency. Over time, it may cause indigestion and gastrointestinal dysfunction.