title: Galvanic corrosion between various combinations of orthodontic brackets and archwires.
abstract: BACKGROUND
  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.
authors: Department of Developmental Sciences, School of Dentistry, Marquette University, Milwaukee, WI, USA.
authors: Arash
authors: A
authors: Bakhtari
authors: Thomas Gerard
authors: TG
authors: Bradley
authors: William K
authors: WK
authors: Lobb
authors: David W
authors: DW
authors: Berzins
mesh_terms: D000704:Analysis of Variance; D003343:Corrosion; D003722:Dental Alloys; D004553:Electric Conductivity; D004570:Electrogalvanism, Intraoral; D008422:Materials Testing; D009532:Nickel; D016382:Orthodontic Appliance Design; D016910:Orthodontic Brackets; D009969:Orthodontic Wires; D011199:Potentiometry; D012464:Saliva, Artificial; D013193:Stainless Steel; D018709:Statistics, Nonparametric; D014025:Titanium
chemical_list: D003722:Dental Alloys; D012464:Saliva, Artificial; C023988:beta titanium; C040654:titanium nickelide; D013193:Stainless Steel; D009532:Nickel; D014025:Titanium