alexa Galvanic corrosion between various combinations of orthodontic brackets and archwires.
Engineering

Engineering

Journal of Electrical & Electronic Systems

Author(s): Bakhtari A, Bradley TG, Lobb WK, Berzins DW

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Abstract INTRODUCTION: The purpose of this study was to compare galvanic currents generated by different combinations of commonly used brackets and archwires. METHODS: As-received stainless steel, nickel-titanium, and beta-titanium wires were coupled to stainless steel and titanium brackets in an artificial saliva medium. The galvanic current and amount of charge transferred for each pair were monitored with a zero resistance ammeter for 10 hours. RESULTS: Two-way analysis of variance (ANOVA) showed a significant difference in charge and galvanic currents when factored for type of bracket (P <0.001), but no significant difference between them when factored by type of wire (P >0.05). Specifically, a brazed stainless steel bracket was significantly greater in charge transferred and 10-hour galvanic current than metal injection molded stainless steel and titanium brackets (P <0.001), which were not different from each other (P >0.05). CONCLUSIONS: The method of bracket manufacturing might be of equal or more relevance to galvanic corrosion susceptibility than bracket composition. Copyright © 2011 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved. This article was published in Am J Orthod Dentofacial Orthop and referenced in Journal of Electrical & Electronic Systems

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