1- Gu, J et al. Evaluation of Invisalign treatment effectiveness and efficiency compared with conventional fixed appliances. AJO-DO February 2017, 151: 259-66
2- Buschang, P et al. Comparative time efficiency of aligner therapy and conventions, edgewise braces. Angle Orthodontist, 2014. B4:3
3- Invisalign Go and Lite only. Treatment times vary with Invisalign Go and Invisalign Lite depending on individual patient needs.
4- As of October 29, 2018, provided by Align Technologies.