Journal of the Korean Academy of Pediatric Dentistry 2013;40(2):106-117.
Published online May 31, 2013.
THREE-DIMENSIONAL EVALUATION OF IMPACTED MAXILLARY CANINES USING CONE BEAM COMPUTED TOMOGRAPHY AND PANORAMIC RADIOGRAPHS
Sang-Yun Jeon, Nan-Young Lee, Sang-Ho Lee
Department of Pediatric Dentistry, College of Dentistry, Chosun University 
Correspondence:  Nan-Young Lee,  Tel: 062-225-8240, Email: nandent@chosun.ac.kr
Received: 25 January 2013   • Accepted: 14 May 2013
Abstract
Normal eruption of the canine is important for the transition to the permanent dentition. Etiologies, including premature loss or delayed retention of deciduous teeth, neoplasm and abnormality of lateral incisor can cause impaction of the maxillary canine. Untreated canine impaction can result in malocclusion, cyst formation and obstacles in orthodontic treatment. The aim of this study is to evaluate location of the impacted maxillary canine and to identify correlation between location and management of the impaction including complications. Using panoramic radiographs and CBCT scan, images of 89 children diagnosed with impaction of the maxillary canine, location of impacted canines was evaluated. The choice of treatment and complications were investigated to identify correlation. Results show that the most commonly impacted location of the maxillary canine was in the mid-alveolar area, followed by buccal side and palatal side. Orthodontic traction was selected more frequently than the other treatments. As complications, displacement of adjacent tooth was occurred most frequently. Buccally impacted canines showed increased tendency towards displacement. The more buccally the canine was impacted, the less orthodontic traction was chosen as the treatment. The canine impacted mesially to the central incisor showed increased tendency to occur root resorption. Therefore, early diagnosis by periodic examination, appropriate treatment and intervention is required.
Key Words: Maxillary cuspid, Impacted tooth, Computed tomography


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