Galvanic corrosion of metal injection molded (MIM) and conventional brackets with nickel-titanium and copper-nickel-titanium archwires

Siargos, B; Bradley, TG; Darabara, M; Papadimitriou, G; Zinelis, S

dc.contributor.author	Siargos, B	en
dc.contributor.author	Bradley, TG	en
dc.contributor.author	Darabara, M	en
dc.contributor.author	Papadimitriou, G	en
dc.contributor.author	Zinelis, S	en
dc.date.accessioned	2014-03-01T01:26:23Z
dc.date.available	2014-03-01T01:26:23Z
dc.date.issued	2007	en
dc.identifier.issn	0003-3219	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18054
dc.subject	Brackets	en
dc.subject	Galvanic corrosion	en
dc.subject	MIM	en
dc.subject.classification	Dentistry, Oral Surgery & Medicine	en
dc.subject.other	copper	en
dc.subject.other	Copper NiTi	en
dc.subject.other	dental alloy	en
dc.subject.other	nickel	en
dc.subject.other	titanium	en
dc.subject.other	titanium nickelide	en
dc.subject.other	unclassified drug	en
dc.subject.other	article	en
dc.subject.other	chemistry	en
dc.subject.other	comparative study	en
dc.subject.other	corrosion	en
dc.subject.other	dental care	en
dc.subject.other	orthodontic device	en
dc.subject.other	surface property	en
dc.subject.other	Copper	en
dc.subject.other	Corrosion	en
dc.subject.other	Dental Alloys	en
dc.subject.other	Electrogalvanism, Intraoral	en
dc.subject.other	Nickel	en
dc.subject.other	Orthodontic Brackets	en
dc.subject.other	Orthodontic Wires	en
dc.subject.other	Surface Properties	en
dc.subject.other	Titanium	en
dc.title	Galvanic corrosion of metal injection molded (MIM) and conventional brackets with nickel-titanium and copper-nickel-titanium archwires	en
heal.type	journalArticle	en
heal.identifier.primary	10.2319/0003-3219(2007)077[0355:GCOMIM]2.0.CO;2	en
heal.identifier.secondary	http://dx.doi.org/10.2319/0003-3219(2007)077[0355:GCOMIM]2.0.CO;2	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	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°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. © 2006 by The EH Angle Education and Research Foundation, Inc.	en
heal.publisher	E H ANGLE EDUCATION RESEARCH FOUNDATION, INC	en
heal.journalName	Angle Orthodontist	en
dc.identifier.doi	10.2319/0003-3219(2007)077[0355:GCOMIM]2.0.CO;2	en
dc.identifier.isi	ISI:000244619600024	en
dc.identifier.volume	77	en
dc.identifier.issue	2	en
dc.identifier.spage	355	en
dc.identifier.epage	360	en