3Bums DR, Unger JW, Elswick RK, et al. Prospective clinical evaluation of mandibular implant overdentures : Part I - retention , stability and tissue response [ J]. J Prosthet Dent, 1995 ,73 (4) : 354 - 363.
4Ali Bolouri, Rosemarie R, Zartman. Fabrication of custom clips for bar - and - clip attachments for implant - supported overdentures [ J ]. J Prosthet Dent, 2006, 96 (5) : 379 - 380.
5Piattelli A, Degidi M, Marchetti C, et al. Histologic analysis of the interface of a titanium implant retrieved from a nonvascularized mandibular block graft after a 10 - month loading period [ J ]. Int J Oral Maxillofac Implants, 1997, 12 (6) : 840 - 843.
7Waddell J, Payne A, Swain M, et al. Physical and metallurgical considerations of failures of soldered bars in bar attachment systems for implant overdentures : A review of the literature [ J ]. J Prosthet Dent, 2006, 96(4) : 283 -288.
8Tipton PA. The milled bar - retained removable bridge implant - supported prosthesis: a treatment alternative for the edentulous maxilla [ J]. J Esther Restor Dent, 2002, 14(4):208 -216.
9Mericske - Stern RD, Taylor TD, Belser U. Management of the edentulous patient [ J ]. Clin Oral Impl Res, 2000, 11 ( Suppl ) : 108 - 125.
10Akca K, Iplikciolu H. Finite element stress analysis of the effect of short implant usage in place of cantilever extensions in mandibular posterior edentulism [ J]. J Oral Rehabil, 2002, 29 (4): 350 - 356.