Nickel titanium alloys as orthodontic archwires: A narrative review

Uysal, İdil; Yılmaz, Bengi; Atilla, Aykan Onur; Evis, Zafer

doi:10.1016/j.jestch.2022.101277

Cited by 9 publications

(4 citation statements)

References 143 publications

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“…Also, two major problems in using NitTi alloys in orthodontics -friction and corrosion which lead to Ni-Ti release and mechanical weakening, can be encountered with different surface modifications of the archwire [57]. The results of a clinical study revealed that TiO 2 coating on the archwire surface decreased the surface roughness and adhesion of Streptococcus mutans.…”

Section: Application Of Ni-ti Alloy In Orthodonticsmentioning

confidence: 99%

A brief overview and application of Nickel-Titanium shape memory alloy in dentistry

Miličić Lazić,

Popović Bajić,

Đorđević

et al. 2024

Titanium-Based Alloys - Characteristics and Applications

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Nickel-titanium alloys are the most common shape memory alloys (SMA) widely used in dentistry. The attractive properties of Ni-Ti BioSMAs (shape memory effect, superelasticity, good corrosion, wear resistance, and good biocompatibility) make them highly desirable candidates for the design of implants, prosthetic components, orthodontic wires, and endodontic files. The aim of this chapter is to present the advantages of Ni-Ti alloy in dentistry through a selection of optimal chemical composition and various surface treatments (mechanical polishing, electrochemical polishing, chemical etching in acid solutions, heat treatment). The osteoconductivity of the Ni-Ti alloy on human bone cells and the anticorrosive and antibacterial effects of nanocoating orthodontic wires were tested. The results on human bone cells suggested good adhesion and proliferation of osteoblast-like cells to nickel-titanium surfaces, which could improve osseointegration of the potential dental implants. A study of magnetron sputtering method (MS) with TiN-Cu-nanocoatings on orthodontic archwires showed favorable results in corrosion resistance and antibacterial properties. Future improvement of mechanical properties is focused on applying various methods of surface modifications, especially applying coatings with antibacterial properties.

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Section: Application Of Ni-ti Alloy In Orthodonticsmentioning

confidence: 99%

A brief overview and application of Nickel-Titanium shape memory alloy in dentistry

Miličić Lazić,

Popović Bajić,

Đorđević

et al. 2024

Titanium-Based Alloys - Characteristics and Applications

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“…Ni-Cr alloys have been applied in the manufacture of crowns and bridges, although nowadays they have fallen into disuse in fixed prosthodontics [7]. Nickel-titanium alloys, also known as Nitinol, are actually widely used in components of orthodontic appliances due to their effectiveness and durability [8,9]. It is also important to highlight that due to the longevity of conventional orthodontic treatments, patients are exposed for many months to the presence of orthodontic metallic components in the oral cavity, which promotes the occurrence of corrosion and wear [9][10][11], and is susceptible to the eventual release of metallic ions from them [8,12,13].…”

Section: Of 10mentioning

confidence: 99%

“…Nickel-titanium alloys, also known as Nitinol, are actually widely used in components of orthodontic appliances due to their effectiveness and durability [8,9]. It is also important to highlight that due to the longevity of conventional orthodontic treatments, patients are exposed for many months to the presence of orthodontic metallic components in the oral cavity, which promotes the occurrence of corrosion and wear [9][10][11], and is susceptible to the eventual release of metallic ions from them [8,12,13]. It is essential to note that prolonged exposure to a small amount of this transition metal can affect various cellular functions and also trigger cytotoxic and mutagenic effects [14][15][16][17].…”

Section: Of 10mentioning

confidence: 99%

Transport Properties in Multicomponent Systems Containing Cyclodextrins and Nickel Ions

Fangaia,

Silva,

Messias

et al. 2024

IJMS

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In this work, we propose a comprehensive experimental study of the diffusion of nickel ions in combination with different cyclodextrins as carrier molecules for enhanced solubility and facilitated transport. For this, ternary mutual diffusion coefficients measured by Taylor dispersion method are reported for aqueous solutions containing nickel salts and different cyclodextrins (that is, α-CD, β-CD, and γ-CD) at 298.15 K. A combination of Taylor dispersion and other methods, such as UV-vis spectroscopy, will be used to obtain complementary information on these systems. The determination of the physicochemical properties of these salts with CDs in aqueous solution provides information that allows us to understand solute–solvent interactions, and gives a significant contribution to understanding the mechanisms underlying diffusional transport in aqueous solutions, and, consequently, to mitigating the potential toxicity associated with these metal ions. For example, using mutual diffusion data, it is possible to estimate the number of moles of each ion transported per mole of the cyclodextrin driven by its own concentration gradient.

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“…Particular attention should be given to additional Ti-based alloys, such as NiTi and Cu-NiTi alloys, due to its high Ni nominal content. Nitinol ® -which stands for "Nickel Titanium Naval Ordnance Laboratory", with near-equiatomic Ni and Ti concentrations-revolutionized orthodontics since its introduction into clinical practice in 1972 [37,51,52]. Due to its distinct mechanical properties, such as shape memory (shape memory alloy-SMA) and superelasticity behavior, this class of metals is now extensively used for the manufacture of orthodontic wires.…”

Section: Main Compositionmentioning

confidence: 99%

Corrosion of Fixed Orthodontic Appliances: Causes, Concerns, and Mitigation Strategies

Fróis,

Santos,

Louro

2023

Metals

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The orthodontic supply market is a prosperous billion-dollar industry, driven by an increasing demand for orthodontic appliances. The supremacy of metallic first-generation biomaterials is evident for manufacturing brackets, archwires, bands, and other components due to their well-recognized chemical inertness, spontaneous passivation, biocompatibility, and favorable mechanical properties combination. However, the oral cavity is the ultimate corrosion-promoting environment for any metallic material. In this work, the general picture of the intraoral degradation of fixed orthodontic appliances is first addressed, from the causes to the harmful effects and their oral clinical implications. Current mitigation strategies are also pointed out, including the alloys’ bulk composition adjustment combined with new and advanced manufacturing processes and/or their surface treatment or coating deposition. The versatile use of thin films and coatings stands out with different deposition technologies: Many in vivo and in vitro efforts have been devoted to oral aging, from monolithic to composite architectures and micro- to nano-scale materials, to meet the best and safest oral practice demands. Unfortunately, literature data suggest that even the existing commercially available protective coatings have drawbacks and are fallible. Further multidisciplinary research is still required to effectively mitigate the corrosion behavior of fixed orthodontic appliances.

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Nickel titanium alloys as orthodontic archwires: A narrative review

Cited by 9 publications

References 143 publications

A brief overview and application of Nickel-Titanium shape memory alloy in dentistry

A brief overview and application of Nickel-Titanium shape memory alloy in dentistry

Transport Properties in Multicomponent Systems Containing Cyclodextrins and Nickel Ions

Corrosion of Fixed Orthodontic Appliances: Causes, Concerns, and Mitigation Strategies

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