Abstract
Drinks may contain aroma compounds, which are also known as an odorant, aroma, fragrance, or flavor. Besides, aroma compounds have been used as corrosion inhibitors. People having irregular growth of teeth get clipped with orthodontic wires made of various alloys, such as SS316L and SS18-8 alloys. These alloys are in contact with saliva in the oral environment. Hence, these wires may undergo corrosion. Further the drink items we take orally such as juices flavored with aroma compounds may influence the corrosion rate of the orthodontic wires. Corrosion behavior at the nanoscale of SS18-8 alloy in artificial saliva with or without the presence of five aroma compounds (viz., vanilla, orange, lemon, pineapple, and rose) has been investigated by polarization study and AC impedance spectra. The hydrophobicity of the surfaces has been analyzed by contact angle measurement. In addition, the surface morphology of the protective film has been analyzed by AFM. The corrosion protection efficiencies of various systems are as follows: vanilla>orange>lemon>pineapple>rose. All these systems offer better corrosion protection to orthodontic wire made of SS18-8 alloy in artificial saliva. Hence, it is implied that people clipped with orthodontic wire made of SS18-8 alloy need not hesitate to take orally food items flavored with the investigated fragrant.
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