预防性牙齿矫正：在牙及颌面部的胚胎发育和后天发育过程中，各种先天性和后天性环境因素均可影响其发育而造成牙颌畸形，如果我们采取各种预防措施来防止各种畸形的发生，则称之为预防矫治。如母亲妊娠期注意营养、过量放射线照射及药物，定期进行口腔检查，早期发现问题，进行早期预防。如龋齿的早期治疗、口腔不良习惯的早期破除，滞留乳牙、多生牙的及时拔除等，通过这些预防措施可预防牙颌畸形的发生。
Preventive orthodontics: in the process of tooth and maxillofacial embryonic development and postnatal development, all kinds of congenital and postnatal environmental factors can affect their development and cause tooth and jaw deformities. If we take various preventive measures to prevent the occurrence of various deformities, it is called preventive orthodontics. For example, during pregnancy, the mother should pay attention to nutrition, excessive radiation and medicine, carry out oral examination regularly, find out problems early, and carry out early prevention. Such as the early treatment of caries, the early removal of bad oral habits, retention of deciduous teeth, timely extraction of supernumerary teeth and so on, these preventive measures can prevent the occurrence of tooth and jaw deformity.