Abstract
Impaction of multiple maxillary anterior teeth is a rare condition; when it occurs, it impacts the patient's chewing function and smile esthetics, and it has always been problematic for clinicians. This case report presents an 11 -year-old girl with impaction of 3 adjacent maxillary anterior teeth, including labiopalatally oriented maxillary right central and lateral incisors and a mesially inclined maxillary right canine. These 3 impacted and stacked teeth were sequentially aligned after surgical exposure and orthodontic traction, and the surrounding dentigerous cyst healed simultaneously. Precise and delicate biomechanics will control root movement and prevent root colli-sion. Gate spring, a novel torquing auxiliary, was used for highly efficient root torque movements of the previ-ously impacted incisors. After 32-month treatment, the patient's occlusion and esthetics greatly improved. (Am J Orthod Dentofacial Orthop 2022;162:763-76)