Fit of porcelain fused-to-metal crown and bridge castings.
作者信息
Eden G T, Franklin O M, Powell J M, Ohta Y, Dickson G
出版信息
J Dent Res. 1979 Dec;58(12):2360-8. doi: 10.1177/00220345790580120501.
PMID:389980
Abstract
The dimensional accuracy of porcelain fused to metal crown and bridge castings was determined on truncated cone-shaped steel dies. Ni-Cr castings produced in manufacturers' laboratories were consistently undersize, while precious metal castings were consistently oversize. Ni-Cr castings, produced in NBS laboratories using a modified investing technique, were routinely oversize.
摘要
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