Evaluation of the Mechanical Properties and Surface Topography of as-Received, Immersed and as-Retrieved Orthodontic Archwires

Pop, S.; Dudescu, Cristian; Merie, Violeta; Cuc, Stanca; Bratu, Cristina

doi:10.15386/cjmed-729

Cited by 9 publications

(12 citation statements)

References 44 publications

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“…Even so, in this study, the unloading force of the wire immersed in NaF solutions increased. Similar results of increasing unloading force were reported by Pop et al ,[ 28 ] where NiTi wires were immersed in fluoride and coke solution, and by Aghili et al ,[ 29 ] where they were immersed in mouthwash solution. This difference did not mean mechanical properties improved after immersion; it was due to the different methods and materials used.…”

Section: Discussionsupporting

confidence: 86%

Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution

Sufarnap,

Harahap,

Cynthiana

et al. 2023

J Orthodont Sci

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OBJECTIVE: Sodium fluoride (NaF) is commonly used in oral hygiene products, leading to corrosion and reduced archwire properties. In addition, ion release can cause allergies and become toxic to the oral environment. This research aimed to observe the Nickel (Ni) and Copper (Cu) ions released that affected initial corrosion as deflection and surface roughness changed in the Copper-Nickel-Titanium (CuNiTi) archwire. MATERIAL AND METHODS: The total samples were 54 copper-nickel-titanium (CuNiTi-Tanzo, American orthodontic®) archwires immersed in three solutions. Artificial saliva was used in the control group NaF 0.05%, and a NaF 0.15% solution was used in the intervention groups ( n = 6). The groups were divided into three observation times (two, four, and six weeks). Cu and Ni ions released, deflection, the surface roughness of the archwires, and solution acidities were recorded and analyzed. RESULTS: Ni and Cu ion release and surface roughness of the CuNiTi archwires significantly increased as the NaF concentration increased. The Ni ion release improved along the immersion period; the opposite was true for the Cu ion release. The solutions became more alkaline after the CuNiTi archwires were immersed. The pH and the archwires’ deflections of the three solutions did not show significant differences. CONCLUSION: The NaF increased Cu-Ni ion release and surface roughness but not the deflection force of the CuNiTi. The increase was affected by the concentration and duration of immersion.

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Section: Discussionsupporting

confidence: 86%

Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution

Sufarnap,

Harahap,

Cynthiana

et al. 2023

J Orthodont Sci

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“…Differences in saliva discharges (i.e., its quality and quantity) may also contribute to the disparity between the upper and lower arches. The reasons for these differences are certainly complex, but the most important element is that the archwires that have already been used are more corroded by salivary secretions, chewing, grinding, and friction potency between the archwires and the braces [10,11]. Despite the surface quality of the same archwire changing slightly and the varying smoothness in the posterior and anterior sections, this study revealed undulated contacts with processing scratches and cracks.…”

Section: Discussionmentioning

confidence: 81%

A new technical study on the characteristics of Nickel-Titanium Orthodontic archwires using stimulated infrared thermography

Chahine¹

2022

IJDM

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Background: Orthodontic treatment becomes an essential field in dentistry since it creates a healthy, functional "bite," which promotes oral health and general physical health. Aim: This study aimed to determine the defects in an old nickel-titanium orthodontic wire in the mouth after four weeks as compared to a new one, as well as their impact on orthodontic treatment quality, and to underline the necessity of restoring these defects using various methods. Methods: For this reason, this research extensively differentiates between two sets of samples of orthodontic arches, both new and used, and quantified their deterioration condition by examining their thermal responses in static and dynamic systems and joule heating. Results:The results showed that the used archwires bear more surface defects in terms of size and area when compared to unused ones. These affirmative conclusions were obtained with accurate results up to 99%. Conclusion:The importance of this study lies in the repetition of this technique for three famous companies in this field that increases the quantity of wire used (291 wires used and new), as no previous study has ever experimented with this large number of patients, if this indicates anything, it is the validity followed in this research, which is reflected in the reduction of errors.

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“…There appear to be limited clinical studies and a notorious inability of in vitro research to simulate in vivo conditions [27][28][29] since the multiplicity of factors present in the oral cavity cannot be simulated [27,[30][31][32]. Due to its reproducibility, the three-point bending test is the standard method for testing and comparing flexural properties [3,5,33,34]. However, studies show wide variability in this method, indicating no established consensus about how testing should be undertaken [3,5,9,35].…”

Section: Discussionmentioning

confidence: 99%

Properties of Superelastic Nickel-Titanium Wires After Clinical Use

Alcaraz,

Moyano,

Pàmies

et al. 2023

Preprint

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The aim of the present study was to describe and determine changes in the superelastic properties of NiTi archwires after clinical use and sterilization. Ten archwires from five different manufacturers (GAC, 3M, ODS, GC, FOR) were cut in two segments and evaluated using a three-point bending test in accordance with ISO 14841:2006. The centre of each segment was deflected to 3.1mm and then unloaded to 0 N to obtain a load-deflection curve. Deflection at the end of the plateau and forces at 3, 2, 1 and 0.5mm on the unloading curve were recorded. Plateau slopes were calculated at 2, 1 and 0.5mm of deflection. Data obtained were statistically analysed to determine differences (p&lt;0.001). Results showed that the degree of superelasticity and exerted forces differed significantly among brand groups. After three months of clinical use, FOR released a greater force for a longer activation period. GC, EURO and FOR archwires seemed to lose their mechanical properties. GC wires released more force than other brand wires after clinical use. Regarding superelasticity after sterilization, GAC, 3M and FOR wires recovered their properties, while EURO archwires lost more.

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Evaluation of the Mechanical Properties and Surface Topography of as-Received, Immersed and as-Retrieved Orthodontic Archwires

Cited by 9 publications

References 44 publications

Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution

Nickel and copper ion release, deflection and the surface roughness of copper-nickel-titanium orthodontic archwire in sodium fluoride solution

A new technical study on the characteristics of Nickel-Titanium Orthodontic archwires using stimulated infrared thermography

Properties of Superelastic Nickel-Titanium Wires After Clinical Use

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