論文

査読有り
2006年7月

Galvanic corrosion behavior of orthodontic archwire alloys coupled to bracket alloys

Angle Orthodontist
  • Masahiro Iijima
  • ,
  • Kazuhiko Endo
  • ,
  • Toshihiro Yuasa
  • ,
  • Hiroki Ohno
  • ,
  • Kazuo Hayashi
  • ,
  • Mitsugi Kakizaki
  • ,
  • Itaru Mizoguchi

76
4
開始ページ
705
終了ページ
711
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1043/0003-3219(2006)076[0705:GCBOOA]2.0.CO;2
出版者・発行元
E H ANGLE EDUCATION RESEARCH FOUNDATION, INC

The purpose of this study was to provide a quantitative assessment of galvanic corrosion behavior of orthodontic archwire alloys coupled to orthodontic bracket alloys in 0.9% NaCl solution and to study the effect of surface area ratios. Two common bracket alloys, stainless steels and titanium, and four common wire alloys, nickel-titanium (NiTi) alloy, beta-titanium (beta-Ti) alloy, stainless steel, and cobalt-chromium-nickel alloy, were used. Three different area ratios, 1:1, 1:2.35, and 1:3.64, were used; two of them assumed that the multibracket appliances consists of 14 brackets and 0.016 inch of round archwire or 0.016 X 0.022 inch of rectangular archwire. The galvanic current was measured for 3 successive days using zero-impedance ammeter. When the NiTi alloy was coupled with Ti (1:1, 1:2.35, and 1:3.64 of the surface area ratio) or beta-Ti alloy was coupled with Ti (1:2.35 and 1:3.64 of the surface area ratio), Ti initially was the anode and corroded. However, the polarity reversed in 1 hour, resulting in corrosion of the NiTi or beta-Ti. The NiTi alloy coupled with SUS 304 or Ti exhibited a relatively large galvanic current density even after 72 hours. It is suggested that coupling SUS 304-NiTi and Ti-NiTi may remarkably accelerate the corrosion of NiTi alloy, which serves as the anode. The different anode-cathode area ratios used in this study had little effect on galvanic corrosion behavior.

リンク情報
DOI
https://doi.org/10.1043/0003-3219(2006)076[0705:GCBOOA]2.0.CO;2
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/16808581
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000239016800026&DestApp=WOS_CPL
ID情報
  • DOI : 10.1043/0003-3219(2006)076[0705:GCBOOA]2.0.CO;2
  • ISSN : 0003-3219
  • PubMed ID : 16808581
  • Web of Science ID : WOS:000239016800026

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