Corrosion evaluation of orthodontic wires in artificial saliva solutions by using response surface methodology

Barcelos, Arianne Madureira; Luna, Aderval S.; Ferreira, Nancy de Assis; Braga, A. V. C.; Lago, Dalva Cristina Baptista do; Senna, Lílian Ferreira de

doi:10.1590/s1516-14392012005000172

Cited by 24 publications

(16 citation statements)

References 25 publications

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“…Different research results were presented by Barcelos et al who investigated the susceptibility to corrosion of Morelli Ortodontia (Brazil) orthodontic archwires made of various materials (18). The authors stated that steel archwires evaluated in the study were characterised by higher corrosion resistance than nickel-titanium archwires.…”

Section: Badania Kliniczne / Clinical Researchmentioning

confidence: 87%

Assessment of corrosion processes in steel orthodontic archwires – in vitro studies

Małkiewicz¹,

Boryczko²,

Sztogryn³

et al. 2019

for

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Section: Badania Kliniczne / Clinical Researchmentioning

confidence: 87%

Assessment of corrosion processes in steel orthodontic archwires – in vitro studies

Małkiewicz¹,

Boryczko²,

Sztogryn³

et al. 2019

for

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“…However, the body fluid is highly corrosive and the corrosion resistance is not provided by just the TiO 2 layer. Therefore, it is required to modify the surface of NiTi devices to improve surface corrosion resistance and develop implant-safe conditions [43,44].…”

Section: Shape Memory Alloys For Vascular Stentsmentioning

confidence: 99%

Self-expanding stents based on shape memory alloys and shape memory polymers

Omid

Goudarzi

Kangarshahi

et al. 2020

jcc

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A stenotic vessel can be opened using net-shape tubes called "stents" leading to the restoration of the bloodstream.Compared to the commonly used stainless steel stent, self-expandable stents have some advantages. They do not suffer from the risks of damage to the vascular tissue due to the balloon expansion. Moreover, overexpansion for compensating the elastic recoil is not needed, and there is no constant force applied on the artery until the occlusion of the device by the artery stops. However, the stent cannot restore the original dimensions of the vessel in the case of calcified plaques. Self-expandable stents can be utilized for the treatment of atherosclerotic lesions in the carotid, coronary, and peripheral arteries. Shape memory alloys (SMAs), mainly NiTi (nitinol), are employed for self-expandable vascular stent applications. Nitinol is widely applied for medical devices and implants due to its excellent fatigue performance, mechanical properties, and biocompatibility, which make this alloy suitable for long-term installations. Other materials used for self-expandable cardiovascular stents are shape memory polymers (SMPs). Shape memory effect is triggered by the hydration of polymers or temperature change preventing the collapse of small blood vessels. This review has focused on the mechanisms and properties of SMAs and SMPs as promising materials for stent application.

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“…Corrosion of the SS and Ni-Ti alloys depend on a combination among saliva pH, the exposition time, and the concentration of F-ions. The critical condition was observed for Ni-Ti wires at pH = 3.0, and high concentration of F-ions, causing an increase in Ni dissolution and corrosion current density [12]. It is a proven fact that corrosion of orthodontic devices occurs, but the impact of corrosion on orthodontic treatment and on patient's health is still not fully understood.…”

Section: Experimental Partmentioning

confidence: 99%

Corrosion Behaviour and Surface Modification of Intra-orally Engaged Orthodontic Ni-Ti Wires

Martha¹,

Ogodescu²,

Bică³

et al. 2017

Rev. Chim.

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Almost all orthodontic wires suffer from corrosion as they are intra-orally engaged. This chemical structure alteration appears on the surface of these wires, surface topography can be easily visualised with scanning electron microscope method. The aim of our study was to assess the intraoral corrosion of the retrieved orthodontic Ni-Ti archwires. Archwire retrieval procedure yielded approximately 30 retrieved wires, placed intra-orally for 1-5 months. SEM analysis was performed and surface changes were interpreted. Our SEM results showed, that surface corrosion and pitting can be seen on the surface of retrieved Ni-Ti wires, the depth of corrosion depends on the time wires have been engaged in the oral cavity. With regards of metal liberation consequently surface corrosion, practitioners should be avare of these chemical changes which can affect the resistence of the orthodontic appliance and patient health.

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Corrosion evaluation of orthodontic wires in artificial saliva solutions by using response surface methodology

Cited by 24 publications

References 25 publications

Assessment of corrosion processes in steel orthodontic archwires – in vitro studies

Assessment of corrosion processes in steel orthodontic archwires – in vitro studies

Self-expanding stents based on shape memory alloys and shape memory polymers

Corrosion Behaviour and Surface Modification of Intra-orally Engaged Orthodontic Ni-Ti Wires

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