論文

査読有り
2013年12月

Magnetic fields from electric toothbrushes promote corrosion in orthodontic stainless steel appliances but not in titanium appliances

DENTAL MATERIALS JOURNAL
  • Takashi Kameda
  • ,
  • Kazuo Ohkuma
  • ,
  • Hirotake Oda
  • ,
  • Natsuki Sano
  • ,
  • Nomintsetseg Batbayar
  • ,
  • Yukari Terashima
  • ,
  • Soh Sato
  • ,
  • Kazuto Terada

32
6
開始ページ
959
終了ページ
969
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.4012/dmj.2013-179
出版者・発行元
JAPANESE SOC DENTAL MATERIALS DEVICES

Electric toothbrushes are widely used, and their electric motors have been reported to produce low-frequency electromagnetic fields that induced electric currents in metallic objects worn by the users. In this study, we showed that electric toothbrushes generated low-frequency magnetic fields (MFs) and induced electric currents in orthodontic appliances in artificial saliva (AS), which accelerated corrosion in stainless steel (SUS) appliances, but not in titanium (Ti) appliances; the corrosion was evaluated by using an inductively coupled plasma-optical emission spectrometer and a three-dimensional laser confocal microscope. The pH of AS used for appliance immersion did not change during or after MF exposure. These results suggested that MF-induced currents from electric toothbrushes could erode SUS appliances, but not Ti appliances, because of their high corrosion potentials. Further studies are required to clarify the mechanisms of metallic corrosion by induced currents in dental fields, which may trigger metal allergies in patients.

Web of Science ® 被引用回数 : 4

リンク情報
DOI
https://doi.org/10.4012/dmj.2013-179
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000330489700014&DestApp=WOS_CPL