Dental Alloy Products In Dentistry
Cobalt-chromium alloy was first used in implant materials. Later, in order to solve the allergy problem of nickel-containing metals, Europe and the United States developed a cobalt-chromium alloy specially used for porcelain repair, which will not cause alloy discoloration in the patient’s mouth. Cobalt-chromium alloy was first used in transplantation medicine for hip joints, which is also a sign of its biocompatibility, and it is still used today.
cobalt chromium porcelain teeth advantages
It was used in dental medicine as early as 1929 and was originally used for the restoration of removable partial dentures. Cobalt-chromium alloy: mainly developed for the toxicity of Ni and beryllium. Its cobalt content is higher than that of nickel-based alloys, generally 25%, as well as elements such as Cu, W, Nb, Si, Ru, Al, and Mo. Because of its higher content of cobalt, its corrosion resistance is better than that of nickel-based alloys, and the combination of metal and porcelain is good, and because it contains more chromium, its melting point is higher, and there is a certain reaction between the alloy and the investment material.
The cobalt-chromium alloy for porcelain teeth has an elastic modulus of 213745 Mpa and a hardness of 335 Vickers hardness. Higher elasticity coefficient, high comfort, no alloy discoloration in the patient’s mouth. The difference between the cobalt-chromium alloy for porcelain teeth and the cobalt-chromium alloy for partial denture support lies in the carbon content of the alloy. Generally, the former contains little or no carbon.
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