Planned and achieved orthodontic tooth movement and labiolingual inclination changes of mandibular incisors during nonextraction space closure with clear aligners: A retrospective cohort study

Less than half of the planned OTM for the mandibular incisors during NESC was achieved. Planned retroclination was overexpressed, and most of planned proclination resulted in retroclination. Clinicians should consider these findings when planning NESC treatment with the Invisalign appliance.