5Motoyoshi M, Yoshida T, Ono A, et al. Effect of cortical bone thickness and implant placement torque on stability of orthodontic miniimplants[J]. Int J Oral Maxillofac Implants, 2007,22 (5) : 779-784.
6Poggio P, Incorvati C, Velo S, et al. Safe zones : a guide for miniscrew positioning in the maxillary and mandibular arch [J]. Angle Orthod, 2006,76(2): 191-197.
7Schnelle MA, Beck FM, Jaynes RM, et al. A radiographic evaluation of the availability of bone for placement of miniscrews [J]. Angle Orthod, 2004,74(6) : 832-837.
8Lim WH, Lee SK, Wikesjo UM, et al. A descriptive tissue evaluation at maxillary interradicular sites:implications for orthodontic miniimplant placement[J]. Clin Anat, 2007,20(7 ):760-765.
9Huang LH,Shotwell JL,Wang HL. Dental implants for orthodontic anchorage[J]. Am J Orthod Dentofacial Orthop,2005,127(6):713- 722.
10Liou EJ,Pai BC,Lin JC. Do miniscrews remain stationary under orthodontic forces [J]? Am J Orthod Dentofacial Orthop,2004,126 ( 1 ) :42-47.
10Ziegler P,Ingervall B.Aclinical study of maxillary canine retraction with a retraction spring and with sliding mechanics[J].Am J Orthod Dentofacial Orthop,1989,95 (2):99-106.