Review of Invisalign Effectiveness
The Invisalign appliance has been in the market for nearly 20 years. Its popularity has largely been fueled by its superior aesthetics over conventional fixed braces especially among the adult population. The early appliances were limited in their range of movements and therefore largely restricted to correction of simple malocclusions. With continuous research and improvements in software and material, the Invisalign appliance is now also used by some practitioners to treat more complicated malocclusions.
Studies comparing treatment with the Invisalign system with conventional fixed appliance have largely been retrospective, with only a handful of randomized controlled trials, often considered the gold standard of study design. The debate among the dental community thereby still persists- is Invisalign just as effective as fixed appliances? A few authors have reviewed the literature available so far, disregarding those deemed to be of poor design or of excessive bias.
The bulk of evidence indicates that Invisalign can be used to treat mild to moderate cases, preferably non-extraction. However the results are not as precise as that with fixed appliances. Fixed appliances are preferred when treating complex cases due to greater control of tooth movements.
1. A systematic review of the accuracy and efficiency of dental movements with Invisalign®
Lidia Galan-Lopez, a,b,c Jorge Barcia-Gonzalez,d and Eliseo Plasenciaa,b
Korean J Orthod. 2019 May; 49(3): 140–149.
Published online 2019 May 21. doi: 10.4041/kjod.2019.49.3.140
2. Clinical effectiveness of Invisalign® orthodontic treatment: a systematic review
Aikaterini Papadimitriou,1 Sophia Mousoulea,2 Nikolaos Gkantidis,3 and Dimitrios Kloukos 1,3
Prog Orthod. 2018; 19: 37.
Published online 2018 Sep 28. doi: 10.1186/s40510-018-0235-z