Physiological Corrosion and Ion Release in Dental Co–Cr–Mo Alloys Fabricated Using Additive Manufacturing

The aim of the article is to review the aspects of the corrosion behaviour, which are most relevant to the clinical application of dental metal alloys.From the point of view of biocompatibility, two corrosion phenomena are considered: the degradation of the surface of dental products and the ion release of alloying atoms during exposure to an artificial physiological environment.While corrosion leads to the partial loss of the material strength, the ion release phenomenon causes cytotoxicity, allergy, and other biological influences in the human body.As noted, the Co-Cr-system alloys are widely known for their biomedical applications in the orthopaedic and dental fields due to their low cost and adequate physical-mechanical properties.The review analyses the microstructure and electrochemical properties of the commercial dental Co-Cr-(Mo, W) alloys fabricated by traditional casting techniques and additive manufacturing by means of the selective laser melting (SLM).Currently, SLM is the most promising technique among the emerging additive fabrication technologies used for metal-products' manufacturing in dentistry.