A liga de cromo de cobalto foi usada pela primeira vez como material de implante . posteriormente, a fim de resolver o problema de alergia do níquel que contém metais, Europa e América desenvolveram a liga de cromo de cobalto usada especialmente para o reparo de porcelana ({1}}} não causará a descoloração de ligas na boca e na boca de {}}}}}}} Um sinal de sua biocompatibilidade e tem sido usado até agora .
As early as 1929, it was used in dentistry and was initially used in the repair of removable partial dentures. Cobalt chromium alloy: it is mainly developed for the toxicity of Ni and beryllium. Its cobalt content is higher than that of nickel based alloy, generally 25%. There are also elements such as Cu, W, Nb, Si, Ru, Al and mo. Because of its high cobalt content, its corrosion resistance is better than that of nickel based alloy, and the metal porcelain bond is good. Because it contains more chromium, its melting point is high, and there is a certain reaction between the alloy and the embedded material.
The cobalt chromium alloy used for porcelain teeth has an elastic modulus of 213745mpa and a hardness of 335 Vickers. Higher elastic coefficient, high comfort, no alloy discoloration in the patient's mouth. The difference between the cobalt chromium alloy used for porcelain fused to metal teeth and the cobalt chromium alloy used for partial denture O suporte é a diferença no teor de carbono da liga . geralmente, a primeira contém pouco ou nenhum carbono .