The orthodontic approach in impaired patients is possible thanks to modern CAD-CAM techniques. These techniques result in a faster diagnosis, but above all, the creation of 3D movies that allow visualization of orthodontic treatments and rehabilitation. Thanks to the use of transparent polycarbonate aligners, which contour and stabilize dental arches, it is possible to treat patients of all ages, that otherwise, with traditional techniques, would not be possible because of the aesthetic sacrifice.