In the orthodontic clinic, I often encounter patients with anterior teeth backbite (commonly known as “enamel”). Because this deformity affects the facial aesthetics and is easily detected by patients and their families, more patients come to the clinic at an early stage. However, many parents still come with many questions about when to start treatment and whether the treatment is stable. From the perspective of the causes and mechanisms of backbite, it can be broadly divided into these categories. 1, the patient does not have a family history of genetic disease, most due to improper breastfeeding posture, over-tip wear of milk cusp teeth or early loss of milk teeth and other factors, the degree of deformity of such patients is relatively light, early manifestation of the front teeth only dental or functional backbite, not easy to find when the child’s lips are relaxed, it is recommended to remove the cause as early as possible at the age of 3-4 years or the use of simple “braces It is recommended to remove the cause or use simple “braces” to correct the problem as early as possible at the age of 3-4 years old, so that not only the treatment effect is stable, but also conducive to the normal development of the jaw, so that when the permanent front teeth grow out, the “enamel” will not appear. 2, a small number of patients due to acquired developmental abnormalities, backbite may affect the establishment of the relationship between the upper and lower jaws, the appearance of a more flat concave face shape, this type of treatment is relatively troublesome, in addition to the early release of the backbite, but also need to use orthopedic devices to improve the poor development of the jaws, such as 6-7 years of age on the need for “front traction” treatment, individual need Continue to the peak of youth development, as long as you insist on wearing orthotics, orthopedic effect is still very obvious. 3, some patients have not been affected by facial shape, only for individual or a few teeth backbite, such patients even if the early untreated or unsatisfactory treatment, orthodontic treatment in the permanent period can still get good results. 4, there is an obvious family history of heredity, or jaw growth far more than normal, although these patients are very few, but the most difficult to treat, even if the patient with good cooperation, the doctor’s skills in place, sometimes there may be “treatment measures can not run the speed of jaw growth” such an embarrassing scene, the author has encountered such patients in the clinic, to I have encountered such patients in the clinic, and the only advice I can give them is to wait until the patient’s jaw growth has completely stopped before undergoing orthognathic surgery. This article only provides a rough identification method for parents. If you still can’t place your child in the right place, please come to a specialist to confirm the diagnosis.