PMID- 17319774
OWN - NLM
STAT- MEDLINE
DCOM- 20070426
LR  - 20131121
IS  - 0003-3219 (Print)
IS  - 0003-3219 (Linking)
VI  - 77
IP  - 2
DP  - 2007 Mar
TI  - Galvanic corrosion of metal injection molded (MIM) and conventional brackets with 
      nickel-titanium and copper-nickel-titanium archwires.
PG  - 355-60
AB  - OBJECTIVE: To compare the galvanic coupling of conventional and metal injection 
      molded (MIM) brackets with commonly used orthodontic archwires. MATERIALS AND 
      METHODS: Six of each type of bracket were suspended in lactic acid along with a 
      sample of orthodontic wire (three nickel-titanium and three 
      copper-nickel-titanium) for 28 days at 37 degrees C. The potential differences 
      between the wires and brackets were recorded per second throughout the duration 
      of the experiment. RESULTS: The MIM brackets exhibited potential differences 
      similar to those seen for the conventional brackets. The greatest potential 
      difference was found for MIM brackets with nickel-titanium wires (512 mV), 
      whereas MIM brackets with copper-nickel-titanium wires had the smallest 
      difference (115 mV). Scanning electron microscope (SEM)-energy-dispersive 
      spectroscopic analysis of the tie-wing area of each bracket type indicated 
      similar elemental composition in both brackets, but in slightly different 
      percentages by weight. The MIM bracket exhibited extensive internal porosity, 
      whereas the conventional bracket was more solid internally. CONCLUSION: The 
      composition and manufacturing processes involved in fabricating MIM brackets 
      impart corrosive properties similar to those seen in the bracket-wing area of 
      conventional brackets and may provide a measurable benefit when taking into 
      account the increased corrosion between the bracket and brazing alloy of 
      conventional brackets.
FAU - Siargos, Barbara
AU  - Siargos B
AD  - Department of Orthodontics, Marquette University, Wisconsin, USA.
FAU - Bradley, Thomas G
AU  - Bradley TG
FAU - Darabara, Myrsini
AU  - Darabara M
FAU - Papadimitriou, George
AU  - Papadimitriou G
FAU - Zinelis, Spiros
AU  - Zinelis S
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Angle Orthod
JT  - The Angle orthodontist
JID - 0370550
RN  - 0 (Copper NiTi)
RN  - 0 (Dental Alloys)
RN  - 12035-60-8 (titanium nickelide)
RN  - 789U1901C5 (Copper)
RN  - 7OV03QG267 (Nickel)
RN  - D1JT611TNE (Titanium)
SB  - IM
MH  - Copper/*chemistry
MH  - Corrosion
MH  - Dental Alloys/*chemistry
MH  - Electrogalvanism, Intraoral
MH  - Nickel/*chemistry
MH  - *Orthodontic Brackets
MH  - *Orthodontic Wires
MH  - Surface Properties
MH  - Titanium/*chemistry
EDAT- 2007/02/27 09:00
MHDA- 2007/04/27 09:00
CRDT- 2007/02/27 09:00
PHST- 2006/02/01 00:00 [received]
PHST- 2006/03/01 00:00 [accepted]
PHST- 2007/02/27 09:00 [pubmed]
PHST- 2007/04/27 09:00 [medline]
PHST- 2007/02/27 09:00 [entrez]
AID - 0003-3219-77-2-355 [pii]
AID - 10.2319/0003-3219(2007)077[0355:GCOMIM]2.0.CO;2 [doi]
PST - ppublish
SO  - Angle Orthod. 2007 Mar;77(2):355-60. doi: 
      10.2319/0003-3219(2007)077[0355:GCOMIM]2.0.CO;2.