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The potential applications of biocompatible Ni-Cr-Mo alloys in dental prosthetics have been evaluated focusing on their resistance to oral environments and biocompatibility behavior. Two types of alloys were examined: a commercially available alloy used as received and a manufactured alloy, which was deposited onto a Teflon substrate via direct current (DC) magnetron sputtering. The corrosion resistance of these two nickel-based alloys was assessed through immersion testing procedures. A total of six samples were analyzed under three different distinct environmental conditions: drinking water, artificial saliva, and water with elevated concentrations of fluoride. The results revealed that the commercially available alloy released nickel ions at remarkably high concentrations in all three solutions, followed by molybdenum and then chromium. However, the DC-deposited manufactured samples presented notable decreases in nickel and molybdenum ion release with increasing release of chromium ion. This trend suggests that the potential of DC magnetron sputtering for improving biocompatible Ni-Cr-Mo alloys can be evaluated to determine the risk of this type of alloy for dental applications .
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Assfour et al. (2026) studied this question.
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