Based on data from scientific research, USA in 2012, the prevalence of C las s 111 malocclusion i n Asia is high enough (Malaysia 12.58%, Japan 13%, C hina 14.5%, and Korea 19%), it show that Class 111 malocclusion is a serious problem. In addition, Class III malocclusion have a complex problem, hecause i t involves the skelelal and dentoalveolar components. and it will affect the development o…