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2000
Volume 21, Issue 5
  • ISSN: 1573-4137
  • E-ISSN: 1875-6786

Abstract

Background

Orthodontic treatment relies on stainless steel (SS) wires to apply forces and torque to reposition teeth. However, SS wires are susceptible to wear and corrosion in the oral environment, necessitating improvements in their durability.

Objective

This study explores the potential of a coating comprising titanium dioxide (TiO) and polyhexamethylene biguanide (PHMB) to enhance the corrosion resistance of SS wires.

Methods

SS wires were coated with a solution containing PHMB and TiO using a drop-casting technique. Field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDAX), and electrochemical tests, including impedance spectroscopy and potentiodynamic polarization, were conducted to characterize the coated wires and evaluate their corrosion resistance.

Results

FE-SEM, EDAX, and Emap analysis confirmed the presence and uniform deposition of PHMB/TiO onto the SS wire surface. Electrochemical tests revealed that the PHMB/TiO-coated SS wires exhibited a significantly lower corrosion rate (7.08×10−6 mm/year) and higher corrosion resistance (562466 Ω) compared to bare SS.

Conclusion

The PHMB/TiO coated SS wire exhibited high corrosion resistance and offered potential benefits for orthodontic treatments. Further research and optimization of this coating may help to improve the durability and reliability of orthodontic appliances.

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2025-11-02

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Deposition of TiO2/Polyhexamethylene Biguanide on Stainless Steel Wire for the Enhancement of Corrosion Resistance and Stability
Curr. Nanosci. 21, 919 (2025); https://doi.org/10.2174/0115734137310115240812071132
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  • Article Type:     Research Article
Keyword(s): EIS; electrochemical studies; polyhexamethylene biguanide; potentiodynamic polarization; Stainless steel ortho wire; titanium dioxide

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