| Introduction. The purpose of this prospective clinical study was to evaluate the efficacy of tooth movement with Invisalign. Methods. 401 anterior teeth were measured from the virtual models of 37 participants treated with Anterior Invisalign. The virtual model of the predicted-tooth position was superimposed over the virtual model of the achieved-tooth position. Results. The mean accuracy of tooth movement with Invisalign was 41%. The most accurate movement was lingual constriction (47.1%), and the least accurate movement was extrusion (29.6%). The accuracy of canine rotation was significantly lower than the rotation of all other teeth, with the exception of the upper lateral. Lingual crown tip was significantly more accurate than labial crown tip, particularly for the upper central and lateral incisors. Conclusion. We still have much to learn regarding the biomechanics and efficacy of the Invisalign system. |
