Orthodontic treatment alone and combined orthodontic and orthognathic treatment are available. Dentition is known as deep overjet. There are two types of orthodontic treatment: 1. Simple orthodontic treatment: the most commonly used orthodontic braces are fixed braces, removable braces, lingual braces, ceramic braces, pressure film braces, etc. The most common orthodontic braces are fixed braces and removable braces. 2. Combined orthodontic and orthomandibular treatment: if the patient is caused by the lack of development of the upper jaw, the maxillary osteotomy can be carried out under the guidance of the doctor, and if it is caused by the mandibular anterior extension of the teeth of the sky, can be mandibular cleavage surgery, and at the same time in the preoperative and postoperative combined orthodontic treatment. Specific orthodontic methods need to go to the hospital under the guidance of the doctor, according to their own situation to choose, the patient should go to the hospital on a regular basis for review, the doctor can be adjusted according to the review of the situation of the orthodontic program.