Assessment of simulated vs actual orthodontic tooth movement with a customized fixed lingual appliance using untreated posterior teeth for registration and digital superimposition: A retrospective study.

Introduction: With the advancement of computer-aided design and computer-aided manufacturing (CAD-CAM), digital setups that simulate the outcome of orthodontic treatment are frequently used. Incognito appliance system is a lingual orthodontic system that uses digital setups. A limitation to previous studies evaluating CAD-CAM simulated outcomes is the lack of stable reference points to superimpose on.