INFLUENCE OF ARTIFICIAL SALIVA AND ESSENTIAL OIL-BASED SOLUTIONS ON THE ELECTRICAL PARAMETERS OF NITINOL AND STAINLESS STEEL ARCHWIRES

This paper analyzes the variation in the electrical characteristics of NiTi and stainless steel archwires under exposure to different liquid media and temperatures. The archwires were enclosed in a microfluidic chip to obtain a controlled environment, mimicking oral cavity conditions. Five liquids were selected for testing: artificial saliva, Listerine mouthwash, cinnamon essential oil added to artificial saliva, eucalyptus essential oil added to artificial saliva and orange essential oil added to artificial saliva. Impedance spectroscopy was performed at three temperatures, (25, 37 and 50) °C, and in three different time intervals: at the start of the experiment, after three weeks and after six weeks of exposure. The impedance, its modulus and phase, and Nyquist diagrams were plotted, as well as the root-mean-square (RMS) deviation parameter. The results showed that both materials exhibited comparable responses with small changes over time.

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