In Vitro Corrosion Behavior of Lingual Orthodontic Archwires
Objectives. To investigate the in vitro electrochemical corrosive behavior of archwires used in lingual orthodontics and the effects on the phase transition temperatures. Materials and Methods. Six different types of archwires of stainless steel, titanium-molybdenum, nickel-titanium and nickel-titan...
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2011-01-01
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Series: | International Journal of Corrosion |
Online Access: | http://dx.doi.org/10.1155/2011/482485 |
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doaj-c5f2ce7dc7854787b10984f84bbd368a2020-11-24T21:35:11ZengHindawi LimitedInternational Journal of Corrosion1687-93251687-93332011-01-01201110.1155/2011/482485482485In Vitro Corrosion Behavior of Lingual Orthodontic ArchwiresCarlos Suárez0Teresa Vilar1Pablo Sevilla2Javier Gil3Department of Orthodontics, Université de Genève, SwitzerlandDepartament d'Odontoestomatologia, Facultat d'Odontologia, Universitat de Barcelona, c/Feixa Llarga, s/n, 08907 L'Hospitalet de Llobregat, SpainDepartament de Ciència dels Materials i Enginyeria Metallúrgica, Escola Tècnica Superior d'Enginyeria Industrial, Universitat Politècnica de Catalunya, Avenida Diagonal, 647, 08028 Barcelona, SpainDepartament de Ciència dels Materials i Enginyeria Metallúrgica, Escola Tècnica Superior d'Enginyeria Industrial, Universitat Politècnica de Catalunya, Avenida Diagonal, 647, 08028 Barcelona, SpainObjectives. To investigate the in vitro electrochemical corrosive behavior of archwires used in lingual orthodontics and the effects on the phase transition temperatures. Materials and Methods. Six different types of archwires of stainless steel, titanium-molybdenum, nickel-titanium and nickel-titanium-copper were used. Corrosion tests were performed following ISO-standard 10993-15:2000. Differential scanning calorimetry and scanning electron microscopy were used. Results. The stainless steel archwires showed an Epit around −600 mV, and those of titanium alloys showed Epit values around 1000 mV. Differential scanning calorimetry detected a rhombohedral phase in nickel-titanium archwires, while it was not detected in nickel-titanium-copper wires. A difference of 2°C to 3.5°C from the manufacturer's claim was found in the as-received and polarized samples, respectively. Conclusions. The 0.016 stainless steel archwires were found to be the less resistant to corrosion. A rhombohedral phase was detected on the nickel-titanium archwires. No major differences were observed among groups concerning phase transformation temperatures.http://dx.doi.org/10.1155/2011/482485 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Carlos Suárez Teresa Vilar Pablo Sevilla Javier Gil |
spellingShingle |
Carlos Suárez Teresa Vilar Pablo Sevilla Javier Gil In Vitro Corrosion Behavior of Lingual Orthodontic Archwires International Journal of Corrosion |
author_facet |
Carlos Suárez Teresa Vilar Pablo Sevilla Javier Gil |
author_sort |
Carlos Suárez |
title |
In Vitro Corrosion Behavior of Lingual Orthodontic Archwires |
title_short |
In Vitro Corrosion Behavior of Lingual Orthodontic Archwires |
title_full |
In Vitro Corrosion Behavior of Lingual Orthodontic Archwires |
title_fullStr |
In Vitro Corrosion Behavior of Lingual Orthodontic Archwires |
title_full_unstemmed |
In Vitro Corrosion Behavior of Lingual Orthodontic Archwires |
title_sort |
in vitro corrosion behavior of lingual orthodontic archwires |
publisher |
Hindawi Limited |
series |
International Journal of Corrosion |
issn |
1687-9325 1687-9333 |
publishDate |
2011-01-01 |
description |
Objectives. To investigate the in vitro electrochemical corrosive behavior of archwires used in lingual orthodontics and the effects on the phase transition temperatures. Materials and Methods. Six different types of archwires of stainless steel, titanium-molybdenum, nickel-titanium and nickel-titanium-copper were used. Corrosion tests were performed following ISO-standard 10993-15:2000. Differential scanning calorimetry and scanning electron microscopy were used. Results. The stainless steel archwires showed an Epit around −600 mV, and those of titanium alloys showed Epit values around 1000 mV. Differential scanning calorimetry detected a rhombohedral phase in nickel-titanium archwires, while it was not detected in nickel-titanium-copper wires. A difference of 2°C to 3.5°C from the manufacturer's claim was found in the as-received and polarized samples, respectively. Conclusions. The 0.016 stainless steel archwires were found to be the less resistant to corrosion. A rhombohedral phase was detected on the nickel-titanium archwires. No major differences were observed among groups concerning phase transformation temperatures. |
url |
http://dx.doi.org/10.1155/2011/482485 |
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