Two rows of human teeth, regular arrangement, clear division of labor, a normal mouth of teeth can not only make you comfortable when you cope with a variety of food, but also in your smile when you bloom to add to your charm. However, life is not always satisfactory, some people’s teeth arrangement shows a phenomenon commonly known as “the sky”, so that people have a big headache for this. Under normal circumstances, the upper and lower teeth bite, it should be the upper front teeth bite in the lower front teeth outside, if the opposite that is the lower front teeth bite in the upper front teeth outside, “anticuspids” is also commonly known as the “earth”, or called “pocket teeth This is also known as a “pocket tooth”. This is medically known as “anterior anti-mandibular”, this situation belongs to a kind of malocclusion, according to statistics, the population of about 45% of the people are present in different degrees, different kinds of malocclusion. First, the etiology, morbidity: 1, genetic factors according to statistics, nearly half of the patients with anterior antimandibular, one to three generations of blood relatives have similar deformities. 2, congenital diseases congenital underdevelopment of the middle of the face, maxilla, such as Crouzon syndrome, Binder syndrome, etc., cleft lip and palate is also one of the etiology of anterior antomandibular. These congenital malformations affect the bone seam proliferation and the surface proliferation of bone, while the surgery has some limitations on the development of the maxilla, thus leading to anterior teeth anti-maxilla. 3.Acquired reasons lead to anterior anti-mandibular many acquired factors, such as the pituitary gland secretes too much growth hormone after adulthood, resulting in mandibular protrusion, anterior teeth or full arch anti-mandibular; severe tonsillitis or swollen glands in order to maintain breathing, reduce pressure and stimulation tend to extend the tongue to drive the lower jaw forward and the formation of the anterior teeth anti-mandibular; mastoid or replacement of teeth caused by dental abnormalities can also lead to anti-mandibular occurrences and is one of the most important acquired causes. It is one of the important acquired reasons. Dysfunction 1, hindering the function of teeth: due to antimaxilla, the teeth arrangement is disordered, the upper and lower front teeth cannot bite normally, the function of cutting food is reduced, and the grinding teeth, which are mainly used for occlusion and grinding, can not perform their functions effectively. 2.Prone to digestive system diseases: the above reasons make the food can not be sufficiently milled and chopped, the gastrointestinal load is increased, the patient’s eating speed is slow, and if you speed up the speed of eating, the gastrointestinal burden is even worse, and in the long run, it will lead to chronic digestive system diseases. 3.Maxillary development deformity: the patient’s lower anterior teeth wrapped around the upper anterior teeth outside, the lower anterior teeth will be on the growth and development of the maxilla to produce limitations, so that it can not be normal development, and the development of the lower jaw is generally later than the maxilla, the growth of the latter stops and can still continue to develop, coupled with the normal circumstances of the lower jaw of the lower jaw of the limitations were lifted, will make the middle of the face become short and small depressed and the lower part of the wide and prominent, seriously affecting the patient’s This will seriously affect the patient’s appearance. Diagnostic examination, nature and degree of deformity The diagnosis of mandibular protrusion and antomandibular deformity is mainly based on physical examination and imaging examination to confirm the diagnosis. Through localized X-ray cephalometric measurement or three-dimensional CT image measurement and analysis, the nature and degree of mandibular protrusion and malocclusion can be determined, i.e., it is due to the retrusion of the upper jaw, the protrusion of the lower jaw, or both of them. Treatment principles, surgical methods, corresponding orthodontics Since the “parietal” brings so much inconvenience to people, early treatment has become a priority. The disease can be prevented and treated by wearing orthodontic appliances during childhood, while adult bone development is complete, the treatment process is far more complex than the former. Patients must go to the orthopedic surgery department of regular hospitals for consultation and treatment, and can obtain satisfactory results through targeted professional facial plastic surgery with orthodontics. 1, for the mandibular protrusion caused by the anti-mandibular deformity need to perform mandibular osteotomy backward, that is, through a special osteotomy, the mandible as a whole backward to correct the anti-mandibular deformity of the purpose. The surgery not only improves the anti-mandibularity but also corrects the angle of the jaw angle while retracting, which makes it more aesthetically pleasing when viewed from the side. For those who have a long chin bone, chin bone osteotomy can be performed to shorten the chin bone. 2.Not all of the anti-mandibular is caused by the mandible, but also because of the maxillary retraction, for this kind of patients need to perform maxillary osteotomy anterior displacement. After anterior displacement, the face which was like a curved moon in the side will be greatly improved. Individual patients who have a relatively low-slung nose after surgery can also have a rhinoplasty to further increase their sense of three-dimensionality. 3, the upper and lower jaw are deformed people need to be through the fine surgical design at the same time for the above upper and lower jaw corrective surgery, if necessary, but also for the chin osteotomy. Improvement of the circumcision is not only the pursuit of beauty, but also a correct treatment of their own health. You should choose a qualified regular plastic surgery hospital for plastic surgery, and actively communicate with the doctor to get good results.