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Main Instructor Chun-Hsiu Yang
Chun-Liang Kuo
Chung-Li Wang
Jung-Chi Hsu
Department / Institution Department of Orthodontics, Chi Mei Medical Center, Tainan City, Taiwan.
Classification Case report
「Objective」To treat cystic lesion between impacted maxillary left canine and lateral incisor and orthodontic traction of impacted canine to its normal position, midline and deep bite correction, achieve canine and molar class I relationship.
「Case」 A 16-year-old female presented her chief complaint was an impacted upper left canine. Clinical examination showed dental Class II division 2 with deep bite and upper midline deviation. Her both lateral incisors were diagnosed with pulp necrosis and apical periodontitis. Periapical radiography showed the impacted canine was buccally positioned with mesial tilting. Radiolucent lesion was significant larger in size and external root resorption of lateral incisor was noted. Treatment plan was root canal treatment of bilateral lateral incisors combined with surgical exposure and orthodontic traction of the impacted canine. In the final results, successful orthodontic traction of the impacted canine with complete healing of cystic lesion, normal overjet, overbite, canine and molar class I relationship were achieved.
「Discussion & Summary」
Impacted canine can cause complications such as dentigerous cysts and external resorption of the canine and the adjacent teeth. The aim of treatment for dentigerous cyst is a complete elimination of pathology and maintenance of dentition with minimal surgical intervention. This case concludes that elimination of pathology followed by surgical exposure of impacted canine can achieve a favorable result. 
Successful Orthodontic Traction of The Unilateral Impacted Maxillary Canine with Cystic Lesion: A Case Report.