In vivo assessment of the corrosion of nickel-titanium orthodontic archwires by using scanning electron microscopy and atomic force microscopy

Ogawa, Celso Massahiro; Faltin, Kurt; Maeda, Fernando Akio; Ortolani, Cristina Lúcia Feijó; Guaré, Renata de Oliveira; Cardoso, Cristiane de Almeida Baldini; Costa, André Luiz Ferreira

doi:10.1002/jemt.23486

Cited by 6 publications

(10 citation statements)

References 25 publications

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“…The oral cavity offers ideal conditions for the phenomena of corrosion in the structure of archwires. These phenomena may secondarily have detrimental effects on both the health of the patient and the mechanical properties of archwires themselves [36,37]. The enhancement of nickel ion release under the influence of electrochemical phenomena is an additional aspect.…”

Section: Discussionmentioning

confidence: 99%

“…Due to that, applied materials for orthodontic treatments, working in a very aggressive oral environment, should have tribological, antibacterial properties and high corrosion resistance. Consequently, many researchers conducted studies on the formation of corrosion phenomena for different types of archwires, and some of these studies involved archwires with applied functional coatings [37][38][39]. Neuman et al [40] demonstrated increased corrosion resistance of orthodontic wires covered with a Teflon coating.…”

Section: Discussionmentioning

confidence: 99%

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Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

et al. 2021

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Orthodontic treatment carries the risk of major complications such as enamel demineralization, tooth decay, gingivitis, and periodontal damage. A large number of elements of fixed orthodontic appliance results in the creation of additional plaque retention sites which increase the risk of biofilm creation. Modification of the surface of orthodontic elements may prevent the formation of bacterial biofilm. In this paper, surface modification of stainless steel orthodontic wires with TiO2: Ag was carried out by the sol-gel thin film dip-coating method. To obtain the anatase crystal structure, substrates were calcined for 2 h at 500 °C. The properties of the obtained coatings were investigated using scanning electron microscopy, X-ray diffraction, and electrochemical tests. Corrosion studies were performed in a Ringer’s solution, which simulated physiological solution. SEM and XRD analyses of the coated surface confirmed the presence of Ag nanoparticles which may have antimicrobial potential.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

et al. 2021

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“…Prilikom korozije dolazi do degracije materijala što je paraćeno otpuštanjem jona i stupanjem jona u kontakt sa okolinom [2]. Osim degradacije materijala ovi procesi imaju izuzetno negativno dejstvo na ljudski organizam u kojem se oni odvijaju [3] . Veliki broj istraživanja imao za cilj karakterizaciju korozije nitinola u različitim medijumima [4,5].…”

Section: Uvodunclassified

KARAKTERIZACIJA TOPOGRAFIJE Ni-Ti ORTODONTSKE ŽICE NAKON IZLAGANJA RAZLIČITIM KOROZIONIM MEDIJUMIMA

Bobić¹,

Petrović²,

Kojić³

et al. 2020

Zbornik radova FTN

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“…The corrosion properties of orthodontic archwires have been widely studied because of the associated biocompatibility issues [14][15][16][17][18][19][20], whereas very little information is available regarding their tribocorrosion properties [9,[21][22][23]. In particular, mainly as-received orthodontic archwires have been studied [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Tribocorrosion Susceptibility and Mechanical Characteristics of As-Received and Long-Term In-Vivo Aged Nickel-Titanium and Stainless-Steel Archwires

et al. 2022

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To evaluate the effect of long-term in-vivo aging on orthodontic archwires, we aimed to assess the triboelectrochemical and mechanical characteristics of as-received and in-vivo aged nickel-titanium (NiTi) and stainless-steel (SS) orthodontic archwires. Four consecutive tribocorrosion cycles on six NiTi and six SS archwires, as-received and in-vivo aged, were performed on a reciprocal tribometer. Electrochemical noise and friction coefficient measurements, three-dimensional surface profiling, and hardness measurements were performed. Repassivation times of as-received archwires were longer than of the in-vivo aged; however, were shorter for NiTi. Friction coefficients were higher for NiTi than for SS archwires. Sudden major current drops concomitant with inverse potential shifts and friction coefficients’ fluctuations, were seen for as-received (last cycle) and in-vivo aged (last three cycles) NiTi archwires. More pronounced tribocorrosion damage was observed on in-vivo aged NiTi than on other archwires. Hardness was generally higher inside the wear track of archwires. Long-term in-vivo exposure decreases the corrosion susceptibility of archwires, more evidently for the NiTi ones. Sudden major fluctuations in electrochemical current, potential, and friction coefficient detected for NiTi archwires, might be related to localized residual parts of the oxide layer persisting due to increased surface roughness or to phase transformations of the alloy’s crystal structure.

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In vivo assessment of the corrosion of nickel-titanium orthodontic archwires by using scanning electron microscopy and atomic force microscopy

Cited by 6 publications

References 25 publications

Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

Improvement of Properties of Stainless Steel Orthodontic Archwire Using TiO2:Ag Coating

KARAKTERIZACIJA TOPOGRAFIJE Ni-Ti ORTODONTSKE ŽICE NAKON IZLAGANJA RAZLIČITIM KOROZIONIM MEDIJUMIMA

Tribocorrosion Susceptibility and Mechanical Characteristics of As-Received and Long-Term In-Vivo Aged Nickel-Titanium and Stainless-Steel Archwires

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