4Marker JC,Goodkind RJ,Gerberich WW.The compressive strength of nonprecious versus precious ceramometal restorations with various frame designs.J Prosthet Dent,1986,55(5)∶560-567
5Semberg J-I,Ekenback J,Lothigius E,et al.Two-year follow-up study of Procera ceramic fixed partial dentures.Int J Prosthodont,1998,11∶145-149
6Hammad IA,Goodkind RJ,Gerberich WW.A shear test for the bond strength of ceramometals. J Prosthet Dent,1987,58(4)∶431-437
7Strietzel R. The Nickel Error[J]. J Multidiscipl Collab Prosthodont, 1999,1(1):76-81.
8Adachi M, Macker JR, Parry EE, et al. Oxide adherence and porcelain bonging to titanium and Ti-6Al-4V alloy[J]. J Dent Res, 1990,69(6):1230-1235.
9Craig RG. Cytotoxicity of experimental casting alloys evaluated by cell culture test[J]. J Dent Res, 1990,69(8):1539-1545.
10Blackman R, Baez R, Barghi N. Marginal accuracy and geometry of cast titanium copings [J]. J Prosthet Dent, 1992,67: 435 ~ 440
8Willershausen B, Gruber I, FMsehmann C, et al. Gingiva pigmentation in PFM and amalgam restorations [ J]. Dtsch Zahnaml Z, 1990,45 (6) :360 - 362.
9Kedici PS,Memikoglu MM, Kansu G. Case report :Ionisation tendencyof a base metal alloy in the oral environment [ J ]. Eur J Prosthodont Restor Dent, 1995,3 ( 5 ) :231 - 234.
10Sakai T,Sakai H, Hashimoto N,et al. Gingival pigmentation beneath a melallic crown: Lingt and electron microscopic obsenations and energy dispersiv X-ray analysis [ J ]. J Oral Pathol,1988,17(8) :409 -415.