Fit of porcelain fused-to-metal crown and bridge castings.
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.
D002857:Chromium; D003442:Crowns; D003722:Dental Alloys; D001840:Dental Bonding; D003735:Dental Casting Technique; D003776:Dental Porcelain; D003779:Denture Design; D003829:Denture, Partial; D009532:Nickel; D013499:Surface Properties
D003722:Dental Alloys; D002857:Chromium; D003776:Dental Porcelain; D009532:Nickel