Comparative evaluation of the electrochemical potentials difference indicators of dental alloys obtained by a new domestic device

Relevance. The electrochemical potential measurement method is widely used to diagnose the phenomena of electrogalvanic intolerance and allows for non-invasive unbiased identification of metal inclusions responsible for the onset of pathological processes in the oral cavity. Nowadays, the domestic industry has developed a new domestic multifunctional device, which has a number of advantages over the previously used one.

Material and methods. By casting, we have prepared eight samples of noble and non-noble metal alloys of the same size, common in prosthodontics for denture manufacturing. The electrochemical potentials of the alloy contact pairs were measured relative to the titanium-based alloy in a neutral and acidic solution of artificial saliva using a new domestic multifunctional device and "BPM-03". We compared the indicators of electrochemical potential difference obtained by two devices.

Results. The average deviation values of the electrochemical potential difference indicators between the devices practically do not differ and reach ±0.9 mV. Titanium-based alloys and cobalt-chromium alloys can be combined with each other at acidity of 4.5 and 7.0. When a titanium alloy is combined with noble alloys, the electrochemical potential difference indicators exceed the acceptable limit of 80 mV.

Conclusion. The indicators of the difference in electrochemical potentials between dental noble and non-noble metal alloys, obtained by a new domestic device and previously used, are identical. The studied non-precious titanium-based and cobalt-chromium alloys can be combined for dental prosthesis manufacturing. The combination of a titanium alloy with noble metal alloys can contribute to the onset of electro-galvanic intolerance.

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