5Rodrigues RC, Ribeiro RF, de Mattos Mda G, et al. Comparativestudy of circumferential clasp retention force for titanium and cobalt- chromium removable partial dentures. J Prosthet Dent, 2002,88 (3) :290-296.
7Cheng H, Xu M, Zhang H, et al. Cyclic fatigue properties of cobah- chromium alloy clasps for partial removable dental prostheses. J Pros- thet Dent, 2010,104(6) :389-396.
8Kim D, Park C, Yi Y, et al. Comparison of cast Ti-Ni alloy clasp retention with conventional removable partial denture clasps. J Pros- thet Dent, 2004,91 (4) :374-382.
9陈治清.口腔材料学.4版.北京:人民卫生出版社,2008:156.
10Mahmoud A, Wakabayashi N, Takahashi H, et al. Deflection fa- tigue of Ti-6A1-TNb, Co-Cr and gold alloy cast clasps. J Prosthet Dent, 2005,93(2) :183-185.
9DongSuk Kim, ChanJin Park, YangJin Yi, et al. Comparison of east Ti - Ni alloy clasp retention with conventional removable partial denture clasps. The Journal of Prosthetic Dentistry, 2004, 91 (4) :. 374 - 382.
10Ahmad Mahmoud, Noriyuki Wakabayashi, Hidekazu Takahashi, et al. Deflection fatigue of Ti - 6A1 - 7Nb, Co - Cr, and gold alloy cast clasps. The Journal of Prosthetic Dentistry, 2005, 93 (2) : 183 -188.
4Risson L, Feldman RS, Kapur KK, et al. Six year report of the peri- edontal health of fixed and removable partial denture abutment teeth[J]. J Prosthet Dent, 1985,54(4) :461-467.
5Berg T, Angelo A. Load transfer by a maxillary distal-extension re- movable partial denture with cap and ring exfracoronal attach-ments [J]. J Pthet Dent, 1992,68(5) :784-789.
