Anterior protrusion of incisors, often with the symptoms of inability to close the mouth, picking teeth, anterior protrusion of upper front teeth and receding lower jaw, is clinically known as anterior protrusion malformation. There are many causes of anterior incisor protrusion, such as bad habits, retained milk teeth, and genetic factors. At this time can be alleviated by changing lifestyle habits, surgical treatment and other methods. 1, the main causes 1, bad habits: mouth breathing habits, biting the lower lip habits, biting thumbs or biting habits and other bad habits may cause the symptoms of protruding incisors; 2, retention of milk teeth: milk teeth failed to fall off on time, resulting in permanent teeth eruption position abnormal, permanent teeth misaligned growth, causing teeth alignment, which will lead to serious incisor protrusion; 3, genetic factors: due to genetic factors, the existence of the previous generation incisors The symptoms of protruding incisors will lead to an increase in the chances of protruding incisors in the next generation; 4, other: due to trauma and other factors, resulting in protruding incisors. Second, treatment methods 1, improve habits: If the symptoms are mild, the patient is still in the teething period of the child, and the symptoms are mainly caused by bad habits, you can consider improving habits to alleviate the symptoms, such as applying some bitters on the lower lip, while wearing orthodontic appliances to change the behavior of biting the lower lip, biting pens, etc.; 2, surgical treatment: under the guidance of professional doctors, can be extracted to improve the retention of milk teeth caused by The incisor protrusion; also through traditional orthodontics, semi-invisible orthodontics, invisible orthodontics, implant restoration and other methods to improve the symptoms, can be combined with their own situation to choose.