This lecture will compare the Class 2 treatment with INVISALIGN SYSTEM. We will describe the different products available currently for adults and teens, included the new product INVISALIGN TEEN. The different Clincheck strategies and features will be explained and compared as well. In order to maintain the anchorage in Class 2 therapy, we use 2 ways in INVISALIGN Technic : mini-screws and elastics of class 2 . They will be detailled and showed with many pictures. We 'll also speak about the particularities concernong Adults and Teens. Finally we will close the presentation with a complete case gallery.