Effects of different corticotomy approaches on anterior retraction with clear aligners: a finite element study

Corticotomy affected the mechanical response of alveolar bone during anterior retraction, promoting bone remodeling and tooth movement. Incisions near the apical region or aligned with the direction of tooth movement may better facilitate anterior retraction. During anterior retraction with clear aligners, anterior teeth exhibited tipping movement, and corticotomy modified this movement pattern. Horizontal and vertical incisions may exacerbate the inclination of anterior teeth. The changes in tooth movement patterns after corticotomy should be carefully considered in orthodontic treatment planning.