Clinically used braces are metal braces, ceramic braces, invisible braces and other kinds of braces, of which invisible braces have the advantages of aesthetics and comfort, convenience and efficiency, and the material is relatively good. 1. Metal braces: clinically, metal braces are the most traditional orthodontic material, mainly using metal brackets bonded to the lip side of the teeth and installing archwires to balance the distribution of traction, but this kind of braces has a strong sense of foreign body, and easy to lead to food residues embedded in the probability of increased cavities, and the need for follow-up one to two times a month, the number of visits. 2. Ceramic braces: ceramic braces are also known as translucent braces, mainly using ceramic brackets fixed bonded to the lip and side of the teeth and the installation of archwire way to correct, ceramic braces have a certain aesthetic, but easy to rupture, and therefore the correction of low efficiency. 3. Invisible braces: invisible braces is currently a more advanced clinical orthodontic methods, mainly using translucent bioceramic processing to form transparent braces for orthodontic, with aesthetic comfort, high efficiency, reduce the number of follow-up visits, data and many other advantages, but the relative cost is high. Therefore, the material of braces to choose invisible braces is better, but need to take into account the individual dental conditions and economic consumption level, it is best to consult a doctor before making a choice.