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Am J Orthod Dentofacial Orthop. 2012 Oct;142(4):524-33. doi: 10.1016/j.ajodo.2011.01.027.

Orthodontic correction of a transposed maxillary canine and first premolar in the permanent dentition.

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  • 1Department of Orthodontics, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.


The patient was a 16-year-old Japanese girl whose chief complaints were crowding and transposition of the maxillary canine and first premolar. A setup model was used to preoperatively align the teeth in their transposed positions. The amount of postoperative reshaping was estimated for the occlusal surfaces of the teeth. However, the patient did not wish to have her teeth reduced by reshaping or to have composite materials for restorative camouflage. Because she strongly expected alignment of her teeth in the correct intra-arch position, her transposed teeth were corrected without extraction of the transposed teeth. Cone-beam computed tomography was used to obtain more detailed information about the transposition, and the direction of tooth movement was examined. Although the duration of the treatment was long, both the crowns and the roots of the transposed teeth were aligned correctly.

Copyright © 2012 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.

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