In vitro corrosion characteristics of commercially available orthodontic wires

Yasuyuki Yonekura, Kazuhiko Endo, Masahiro Iijima, Hiroki Ohno, Itaru Mizoguchi

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


The corrosion characteristics of orthodontic alloy wires were investigated both in as-received and grinded conditions in 0.9% NaCl solution by atomic absorption spectrophotometry and potentiodynamic polarization measurements. The amount of each metal ion released from most alloys was larger for the grinded wires than for the as-received wires (p<0.01). The fact that the beta-Ti alloy wire (Ti-Mo-Zr) does not contain allergenic metals such as Ni, Co, and Cr, and the finding that resistance to both general and localized corrosion is the highest among the six wires investigated suggest that this wire is the most biocompatible orthodontic wire. Since a small amount of Ni, Cr or Co ions were released from Ni-Ti, Co-Cr and stainless steel wires, special attention should be paid during their clinical use for patients with allergic tendencies.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalDental Materials Journal
Issue number2
Publication statusPublished - 2004 Jun


  • Corrosion
  • Hypersensitivity reaction
  • Orthodontic wire


Dive into the research topics of 'In vitro corrosion characteristics of commercially available orthodontic wires'. Together they form a unique fingerprint.

Cite this