Corrosion resistance and mechanical properties of titanium nitride plating on orthodontic wires

Haruki Sugisawa, Hideki Kitaura, Kyosuke Ueda, Keisuke Kimura, Masahiko Ishida, Yumiko Ochi, Akiko Kishikawa, Saika Ogawa, Teruko Takano-Yamamoto

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Titanium nitride (TiN) coating by ion plating has properties such as high hardness, wear resistance, corrosion resistance, and surface lubricity, therefore TiN coating is often used in various dental appliances and materials. In this study, we evaluated the corrosion behaviors and mechanical properties of TiN coated stainless steel (SS) and nickel titanium (Ni-Ti) orthodontic wires prepared by ion plating. TiN coating by ion plating improves the corrosion resistance of orthodontic wires. The corrosion pitting of the TiN coated wire surface become small. The tensile strength and stiffness of SS wire were increased after TiN coating. In contrast, its elastic force, which is a property for Ni-Ti wire, was decreased. In addition, TiN coating provided small friction forces. The low level of friction may increase tooth movement efficiently. Therefore, TiN coated SS wire could be useful for orthodontics treatment.

Original languageEnglish
Article numberdmj/2016-348
Pages (from-to)286-292
Number of pages7
JournalDental Materials Journal
Issue number2
Publication statusPublished - 2018


  • Ion plating
  • Orthodontic wire
  • Titanium nitride


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