Torque movement of the upper anterior teeth using a clear aligner in cases of extraction: a finite element study

ConclusionAnalysis indicates that pure palatal tipping movement of the upper anterior teeth is generated without torque control, thus resulting in the bowing effect. The required torque control of the upper anterior teeth with oversize axial inclination is weaker than that of the upper anterior teeth with normal axial inclination because limited torque loss is expected for oversize axial inclination teeth. Variation sensitivity of the rotation center should be considered carefully due to biological problems when designing translation of the upper anterior teeth with normal axial inclination.

Source: Progress in Orthodontics - August 1, 2022 Category: Dentistry Source Type: research