4MOHAMMAD H, KALANTAR M, FATANEH A, et al. Assessment of radiographic factors affecting surgical exposure and orthodontic alignment of impacted ca- nines of the palate: a 15-year retrospective study[J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2009, 107(6): 772-775.
5OLIVE R J. Factors influencing the non-surgical eruption of palatally impacted canines[J]. Aust Or- thod J, 2005, 21(2): 95-101.
6ZUCCATI G, GHOBADLU J, NIERI M, et al. Fac- tors associated with the duration of forced erup- tion of impacted maxillary canines: a retrospective study[J]. Am J Orthod Dentofacial Orthop, 2006, 130(3): 349-356.
7ROBERTs-HARRY D, SANDY J. Orthodontics. Part 10: impacted teeth[J]. Br Dent J, 2004, 196(6): 319- 327.
8BOUQUET A, COUDERT J L, BOURGEOIS D, et al. Contributions of refotmatted computed tomogrphy in the localization of third molars relative to the maxillary sinus[J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2004, 98(3): 342-347.
9Lee SIr,Kim H J, Son MK,et al. Anthropometric analysis of maxillary anterior buccal bone of Korean adults using cone-beam CT[J]. J Adv Prosthodont, 2010,2(3) : 92-96.
10Domann CE, Kau CH, English JD, et al. Cone beam computed tomography analysis of dentoalveolar changes immediately after maxillary expansion [J ]. Orthodontics (Chic.), 2011,12(3) :202-209.
