Ziebert G J, Hurtado A, Glapa C, Schiffleger B E
J Prosthet Dent. 1986 Mar;55(3):312-7. doi: 10.1016/0022-3913(86)90110-1.
An investigation was conducted to evaluate the relative accuracy of one-piece castings of FPDs of three, four, and five units with those assembled by preceramic soldering and postceramic soldering. The preceramic soldered FPDs were subjected to six simulated porcelain firing cycles to assure a homogeneous sample. A total of 15 FPDs, five of each length, were evaluated for each test condition. A three-piece aluminum mold with stainless steel dies, which allowed for varying the length of the prosthesis, was used to fabricate the FPDs in 52% gold-palladium alloy. Marginal discrepancies of the castings on the dies were compared for the three test techniques. The mesiodistal length of the FPDs that were pre- and postsoldered were also measured at the occlusal and at the gingival margins and compared with the restorations before soldering.
进行了一项研究，以评估三件、四件和五件单位的固定局部义齿（FPD）整体铸造件与通过陶瓷前焊接和陶瓷后焊接组装的铸件的相对准确性。对陶瓷前焊接的FPD进行六次模拟烤瓷烧制循环，以确保样本均匀。每种测试条件下共评估15个FPD，每种长度各5个。使用带有不锈钢模具的三件式铝制模具（可改变修复体的长度），用52%的金钯合金制作FPD。比较了三种测试技术在模具上铸件的边缘差异。还在咬合面和牙龈边缘测量了焊接前后FPD的近远中长度，并与焊接前的修复体进行比较。
