- David W. White, Katie C. Julien, Helder Jacob, Phillip M. Campbell and Peter H. Buschang, Discomfort associated with Invisalign and traditional brackets: A randomized, prospective trial. The Angle Orthodontist Nov 2017, Vol. 87, No. 6 pp. 801-808
- Align’s SmartTrack material is covered by multiple US and foreign patents and pending patent applications.
- Compared to Invisalign aligners previously made from single-layer (EX30) material.