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ESTD Year: 2017 | Impact Factor (2026): 8.7
DOI Prefix: 10.47001/IRJIET
ESTD Year: 2017 | Impact Factor (2026): 8.7
DOI Prefix: 10.47001/IRJIET
Vol 10 No 6 (2026): Volume 10, Issue 6, June 2026 | Pages: 209-213
International Research Journal of Innovations in Engineering and Technology
OPEN ACCESS | Research Article | Published Date: 24-06-2026
Biomedical materials such as Stainless Steel SS316L and Nickel-Titanium (NiTi) are widely used in orthodontic practices due to their mechanical properties and corrosion resistance. However, clinical manipulation often induces plastic deformation, which can disrupt the passive oxide layers protecting the metal surfaces. This study aims to evaluate and compare the effect of various levels of plastic deformation via bending on the corrosion rate of SS316L and NiTi wires wiyh wire diameter of 0.012” in an artificial saliva medium. Electrochemical polarization testing was performed using a Potentiostat/Galvanostat CorrTest CS300. Multiple bending diameters ranging from 2 mm to straight wire (0% deformation). The results showed that plastic deformation increases the corrosion rate of 0.012-inch wires for both materials, with NiTi showing extreme sensitivity, experiencing a corrosion rate jump up to 463 times under extreme bending due to TiO₂ film breakdown. Overall, SS316L demonstrated better corrosion resistance than NiTi after undergoing plastic deformation, particularly in smaller dimensions, though both materials strictly maintained an excellent corrosion resistance classification according to Fontana standards (
Plastic Deformation, Corrosion Rate, SS316L, NiTi, Artificial Saliva, Orthodontic Wire.
Seto Panji Kumboro, Agus Suprihanto, & Sri Nugroho. (2026). Study of the Effect of Plastic Deformation on the Corrosion Resistance of 316L and NiTi in Simulated Saliva. International Research Journal of Innovations in Engineering and Technology - IRJIET, 10(6), 209-213. Article DOI https://doi.org/10.47001/IRJIET/2026.106027
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