5Perdijk FB, Meijer GJ, van Strijen PJ, et al. Effect of extrasseous devices designed for vertical distraction of extreme resorbed mandi- bles on backward rotation of upper bone segments. J Oral Maxilto- fac Surg,2009,4(7) :31-36.
6Vwziroglu F, Soydan SS, Cetinsahin A, et al. Maxillomandibular fix- ation screws early removal of hardware and correction of lingual tilting in alveolar distraction osteogenesis. J Oral Maxillofac Surg, 2010,6(8) :1651-1655.
4Sokol DJ. Effective use of current core and post concepts [J]. J Prosthet Dent 1984, 52(2): 231-234.
5岳松龄.口腔内科学.人民卫生出版社,1987:176.
6[1]Edwards JG.A study of the anterior portion of the palate as it relates to orthodontic therapy[J].Am J Orthodont,1976,69(3):249-273.
7[2]Ten Hoeve A,Mulig RM,Brandt S.Technique modifications to achieve intrusion of the maxillary anterior segment[J].J Clin Orthod,1977,11(3):174-185,188-198.
8[4]Fuhrmann RA,Wehrbein H,Langen HJ,et al.Assessment of the dentate alveolar process with high resolution computed tomography[J].Dentomaxillofac Radiol,1995,24(1):50-54.
9[5]Handelman CS.The anterior alveolus:its importance in limiting orthodontic treatment and its influence on the occurrence of iatrogenic sequelae[J].Angle Orthod,1996,66(2):95-109; discussion 109-110.
10[6]Vardimon AD,Graber TM,Voss LR,et al.Determinants controlling iatrogenic external root resorption and repair during and after palatal expansion[J].Angle Orthod,1991,61 (2):113-122;discussion 123-124.
