Continuous archwire technique for the correction of completely transposed maxillary incisors

Tooth transposition is an uncommon disorder related to ectopic eruption; it can be classified as complete or incomplete on the basis of the position of the crowns and roots of transposed teeth. Aligning the transposed teeth to a normal sequence is always complex and challenging, especially in patients with complete transposition. The segmented archwire technique with cantilever or loops has been used in many transposition patients; however, it requires considerable laboratory work and is sometimes uncomfortable for the patient. In this case report, we present a novel orthodontic treatment for an 8-year-old boy with unilateral complete transposition of the maxillary central incisor and lateral incisor (Mx.I2.I1). During the alignment stage, the lateral incisor was moved palatally to bypass the central incisor, using a 0.012-in nickel-titanium wire continuously. Active orthodontic treatment was conducted for 44 months, and the final outcome was esthetically and functionally effective. Stable and satisfactory results were achieved within 4 years of follow-up.