Fit of porcelain fused-to-metal crown and bridge castings.

  title={Fit of porcelain fused-to-metal crown and bridge castings.},
  author={Gideon Eden and O M Franklin and John M Powell and Yasusada Ohta and George Dickson},
  journal={Journal of dental research},
  volume={58 12},
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. 

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