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J Korean Acad Pediatr Dent. 2010;37(1): 109-116.
Nam-Hyuk Kim, Seong Oh Kim, Je Seon Song, Heung-Kyu Son, Byung-Jai Choi, Jae-Ho Lee, Hyung-Jun Choi
Department of Pediatric Dentistry, Department of Pediatric Dentistry and Oral Science Research Center, College of Dentistry, Yonsei University
Corresponding Author: Hyung-Jun Choi ,Tel: 02-2228-3175, Email: choihj@yuhs.ac
Received: September 15, 2009;  Accepted: November 9, 2009.
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Impaction is defined as a cessation of the eruption of a tooth caused by a clinically or radiographically detectable physical barrier in the eruption path or by an ectopic position of the tooth. The reasons for impaction of the maxillary central incisor are supernumerary tooth, odontoma, ectopic position of tooth germ, dilacerated tooth and so force. Impacted tooth cause space loss due to proximal movement of adjacent tooth, malocclusion, root resorption of adjacent tooth, cyst formation, so careful observation and early detection is important and exact treatment should be applied to prevent these results. The treatment options of impacted tooth include induction an eruption through extraction of deciduous tooth or surgical exposure, reposition of impacted tooth by surgical method or orthodontic treatment. Orthodontic traction is recommended when an eruption does not happen after removal of barrier or surgical exposure, when eruption path is too transpositioned to be corrected spontaneously so eruption does not expected. In these cases, traction of impacted maxillary central incisor was carried out using orthodontic method with closed eruption technique and it showed good clinical results so we report these cases.
Keywords: Tooth impaction | Orthodontic traction | Maxillary central incisor
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