The effectiveness of the attachment position in rotated premolar in clear aligner treatment: a finite element study

The utilisation of an attachment for the purpose of rotation correction was found to be more effective. The results obtained with the two different attachment types were found to be similar. The addition of a bevel to the attachment and its positioning buccally and lingually resulted in an increase in the amount of movement in the tooth, the deformation of the clear aligner, and the stress experienced by the periodontal ligament.