These innovative Invisalign aligners are the first FDA-approved clear aligner treatment for Class II malocclusion, or an overbite, meaning we can do skeletal correction with no hardware at all. The aligners are crafted from the same BPA-free, smooth, plastic as standard Invisalign, Invisalign Teen and Invisalign First. However, they also feature precision wings made from the patented SmartTrack® material that are situated between the premolars and first molars. As you bite down, the wings engage and hold the lower jaw (mandible) in a forward (advanced) position. The jaw shifts incrementally forward into its proper place and the lower jaw grows into the ideal size so it’s matched with upper jaw and the overbite disappears. While the aligners are hard at work on the orthopedic correction, they also simultaneously align and level the teeth.