4Dr. Marita Freisfeld,Isak Arne Dahl,Andreas J?ger,Dieter Drescher,Heinrich Schüller. X-ray diagnosis of impacted upper canines in panoramic radiographs and computed tomographs[J] 1999,Journal of Orofacial Orthopedics / Fortschritte der Kieferorthop?die(3):177～184
3Bishara SE, Kommer DD, Mcneil MH ,et al. Management of impacted canines. Am J Orthod, 1976,69(4 ) : 371.
4Bishara SE. Impacted maxillary canines: a review. Am J Orthod Dentofacial Orhtop, 1992. 101(2) :159.
5Adrian Becker. The orthodontic treatment of impacted tooth. First published. London:Martin Dunitz Lid, 1998. 1-40.
6Crescini A,Clauser C,Giorgetti R,et al. Tunnel traction of infraosseous impacted maxillary canines:a three year periodontal follow-up. Am J Orthod Dentofacial Orthop, 1994,105(1) :61-72.
7Dr. Marita Freisfeld,Isak Arne Dahl,Andreas J?ger,Dieter Drescher,Heinrich Schüller.X-ray diagnosis of impacted upper canines in panoramic radiographs and computed tomographs[J]. Journal of Orofacial Orthopedics / Fortschritte der Kieferorthop?die . 1999 (3)
8Checchi L,Bonetti GA,Pelliccioni GA,et al.Removing high-risk impacted mandibular third molar:A surgical-orthodontic approach. The Journal of The American Dental Association . 1996
