6Sharan A, Macijar D. Maxillary sinus pneumatization following ex-tractions: a radiographic study [ J ]. Int J Oral Maxillofac Implants,2008,23(1):48 -56.
7Emmerich D, Att W, Stappert C. Sinus floor elevation using osteo-tomes :a systematic review and meta-analysis [ J ]. J Periodontol,2005,76(8):1237 -1251.
8Anlekian L, Oved-Peleg E, Marter EE,et al. The clinical signifi-cance of sinus membrane perforation during augmentation of themaxillary sinus[ J]. Oral maxillofac Sui^,2006,64(2) :277 -282.
9Halazonetis DJ. From 2-dimensional cephalograms to 3-dimensionalcomputed tomography scans[ J ]. Am J Orthod Dentofacial Orthop,2005,127(5):627 -637.
10Miller AJ,Maki K,Hatcher DC. New diagnosis tools in orthodontics[J]. Am J Orthod Dentofao Orthop,2004,126(4) :395 -396.