Galvanic Corrosion between Various Combinations of Orthodontic Brackets and ArchwiresAmerican Journal of Orthodontics and Dentofacial Orthopedics
Format of Original7 p.
AbstractIntroduction: 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 betatitanium 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.
Citation InformationArash Bakhtari, T. Gerard Bradley, William K. Lobb and David W. Berzins. "Galvanic Corrosion between Various Combinations of Orthodontic Brackets and Archwires" American Journal of Orthodontics and Dentofacial Orthopedics (2011) ISSN: 0889-5406
Available at: http://works.bepress.com/t_bradley/16/