MHRA no: CA007329

Nickel Chrome castings

Maryland bridge unit, palatal view

Often we manufacture castings for porcelain fused to metal (PFM) prosthetics. Cobalt chrome is unsuitable for such work, so other metals are employed. The four commonly used metals are high and low-gold alloys and alloys of silver-palladium. Our PFM work is all cast in nickel chrome.

Most of our nickel chrome castings take the form of Maryland and Rochette bridge frames, but we can also supply splints and direct posts. These are cast in Nicor ® nickel chrome alloy from Schütz Labortechnik, the metal content of which is laid out in the table below.

Nicor ® Metal Content (%)
Ni Cr Mo
62 26 11

We are happy to design cases for clients if preferred, but a downloadable design sheet is provided on this site for the convenience of those who wish to do this for themselves.

Featured Profile

Double Arm Swing-lock

Figure 1: class 3 jaw relationship, left-hand side

This case was first presented to Steve in 1993. The patient has a class 3 bite, as seen in figs 1,2 and 3, and wanted a denture made to present a class 1 appearance. Previous attempts had failed because the anterior teeth needed to be set so far forward of the ridge that they destabilised the whole appliance even with clasps. The challenge was to manufacture an upper denture that would be at once cosmetically pleasing, retentive and stable.

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