1. Compared to aligners made of off-the-shelf, single-layer .030in material. Data on file at Align Technology. 
  2. Based on two-week wear. 
  3. SmartTrack material when combined with SmartForce features and smartstage technology allows more predictable tooth movement. 
  4. Treatment times are up to 50% faster with technological advances to the Invisalign system, including SmartTrack material. With weekly aligner changes, compared with two-week aligner wear.