“Ground Bunion”, is a kind of oral malocclusion, which has a serious impact on oral function, facial aesthetics and psychological health, and the symptoms gradually worsen as the patient grows. The normal occlusal relationship is that the upper front teeth cover the front of the lower front teeth. If the lower front teeth are located in front of the upper front teeth, it is often referred to as the “circumcision”, which is medically known as anterior anti-mandibular teeth. There are many causes of “teres”, and children often have a family background; certain congenital diseases, such as congenital cleft lip and palate, can also cause “teres”. Respiratory diseases such as chronic tonsillitis, abnormal replacement of milk and permanent teeth, bad oral habits such as tongue thrusting, finger sucking, upper lip biting, jaw thrusting, and incorrect artificial feeding (e.g., breastfeeding while lying on the back, forcing the baby to thrust forward and suck). The abnormalities of oral function caused by “teratoid”, including reduced chewing efficiency and occlusal trauma, have a large impact on the patient’s aesthetics, which in turn can lead to psychological problems and affect the patient’s normal school life. If you find a case of “circumcision”, you should go to the hospital in time, and the treatment methods for different causes of “circumcision” are also different. Generally speaking, premolar antimaxilla can be treated at around 4 years old (3–5 years old), if the child can cooperate, treatment should be carried out as early as possible to prevent the antimaxilla from continuing to develop and aggravate. For adult patients who have already completed their development, the less serious skeletal causes can be masked by fixed orthopedic treatment; if the skeletal factors are more serious, surgery is needed to correct the wrong skeletal relationship.