A comparative evaluation of metallurgical properties of stainless steel and TMA archwires with timolium and titanium niobium archwires - An in vitro study

Rajaram, Vijayalakshmi; Nagachandran, K. S.; Kummi, Pradeep; Jayakumar, P

doi:10.4103/0970-9290.59450

Cited by 10 publications

(4 citation statements)

References 1 publication

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“…The result of the present study showed that stainless steel arch wire material provide the lowest friction resistance in wet condition followed by titanium molybdenum alloy (β-titanium TMA), then Nitinol (NiTi), and copper nickel titanium (Cu Ni Ti) which reported the highest friction resistance. Many studies (14,(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41) reported the superiority of stainless steel archwires as it was associated with the least amount of friction but followed by Ni Ti while beta titanium exhibited the highest frictional resistance. This was explained by the increased surface roughness of β-titanium wire as compared with stainless steel arch wire as reported by scanning electron microscope and laser spectroscopic picture (26,43) .…”

Section: Discussionmentioning

confidence: 99%

Assessment of friction resistance of four orthodontic arch wires using three ligation methods in dry and wet conditions

Yousif

Karim²

2020

Egyptian Orthodontic Journal

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Aim: Comparison of static and dynamic friction resistance of stainless steel (SS), nickel titanium (NiTi), titanium molybdenum alloy (TMA) and copper nickel titanium (CuNiTi) archwires using three different methods of ligation; St St ligature, Slide low friction elastics and conventional elastics in both dry and wet conditions. Materials and Methods: 144 new orthodontic arch wires were divided according to the alloy type into four groups with 36 archwires for each; group 1: stainless steel (SS), group 2: nickel titanium (NiTi), group 3: titanium molybdenum alloy (TMA) and group 4: copper nickel titanium (CuNiTi). Each group was divided according to the method of ligation into three subgroups with 12 archwires for each; subgroup A: ligated with SS ligature, subgroup B: ligated with Slide low friction elastics and subgroup C: ligated with conventional elastics. Static and kinetic friction resistance was measured using Lloyd Instruments in both dry and wet conditions by adding artificial saliva. Student t-test, ANOVA and LSD's test were used for statistical analysis. Significance level was set at P≤ 0.05. Results: Student t-test showed static and kinetic friction for wet conditions were highly significant lower than dry conditions for the same arch wire/ligature cominations (P<= 0.001). Static and kinetic friction resistance of SS archwires had significantly the least amount of friction followed by TMA then NiTi (Nitinol) and lastly CuNiTi. SS ligature exhibited significantly the least amount of friction followed by Slide low friction elastics while conventional elastics exhibited the greatest amount of friction (P<0.001). Conclusions: Wet conditions are essential for reducing friction in stainless steel bracket/archwire/ligature combinations. Stainless Steel archwire ligated to the SS bracket with SS ligatures exhibited the least amount of static and dynamic friction resistance followed by TMA and then NiTi and CuNiTi in an ascending order. SS ligature showed the least amount of friction followed by Slide elastomers and conventional elastic reported the highest friction resistance.

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Section: Discussionmentioning

confidence: 99%

Assessment of friction resistance of four orthodontic arch wires using three ligation methods in dry and wet conditions

Yousif

Karim²

2020

Egyptian Orthodontic Journal

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“…By that time, gold alloys were the first choice for the fabrication of wires [7], bands, clasps, ligatures, and spurs [8,9]. The development of new alloys was benefited by the fact that gold prices were high, which rendered these appliances very expensive, although the controversy between gold and other alloys continued for some decades to come [9].…”

Section: A Brief Historymentioning

confidence: 99%

Stainless Steel: Material Facts for the Orthodontic Practitioner

Santander

Ossa

2015

Rev. nac. odontol.

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Abstract. Stainless steel is one of the most widely used materials in current orthodontics. Archwires, brackets, bands, ligatures, tubes, among other appliances, are manufactured using different types of this alloy. The first evidence of the use of this alloy in the orthodontic field dates back to the mid-1920s, when it was introduced as a material to manufacture wires. The alloy has ever since gained popularity among orthodontists and its further development has led to its widespread use in today's different orthodontic techniques. Despite being available for more than 80 years, and the fact that most orthodontists use it on a daily basis, there is still a lack of knowledge about the basic principles, composition, and properties of this material by these professionals. Therefore, the purpose of this literature review is to discuss the main characteristics and properties of stainless steel that are useful in the orthodontic practice for orthodontists to take advantage of this remarkable material.Keywords: stainless steel, orthodontic wires, austenitic, orthodontic brackets. Resumen. El acero inoxidable es uno de los materiales más ampliamente utilizados en la ortodoncia actual. Los arcos de alambre, brackets, bandas, ligaduras, tubos, entre otros aparatos, se fabrican utilizando diferentes tipos de esta aleación. La primera evidencia del uso de esta aleación en el campo de la ortodoncia se remonta a mediados de la década de los veinte cuando se introdujo como un material para fabricar alambres. Desde ese entonces, esta aleación ha ganado popularidad entre los ortodoncistas y su desarrollo posterior ha llevado al uso extendido en las diferentes técnicas de ortodoncia de la actualidad. A pesar de haber estado disponible por más de ochenta años, y del hecho de que la mayoría de los ortodoncistas lo usan a diario, todavía existe un desconocimiento acerca de los principios básicos, la composición y las propiedades de este material por parte de estos profesionales. Por tanto, el objeto de esta revisión de la literatura es discutir las principales características y propiedades del acero inoxidable que son útiles en la práctica de la ortodoncia para que los ortodoncistas se beneficien de este notable material.Palabras clave: acero inoxidable, alambres de ortodoncia, austenítico, brackets de ortodoncia. Aço inoxidável: fatos significativos para o ortodontista praticanteResumo. O aço inoxidável é um dos materiais mais largamente empregados na ortodontia atual. Os arcos de arame, aparelhos, bandas, ligaduras, tubos, dentre outros aparelhos, são fabricados com diferentes tipos desta liga. A primeira evidencia do uso desta liga no campo da ortodontia remonta a meados da década dos vinte quando foi introduzido um material para fabricar arames. Desde essa altura, essa liga ganhou popularidade dentre os ortodontistas e seu desenvolvimento subsequente levou a ampliar seu uso nas diferentes técnicas de ortodontia da atualidade. Embora estivesse disponível por mais de 80 anos, e apesar do fato de que a maioria dos ortodontistas ut...

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“…According to the material, the archwires were classified into Gold, Stainless Steel, Nickle Titanium, Titanium Molybdenum, Cobalt Chromium, Titanium Niobium, fiber reinforced composite, and polymeric archwires. [ 2 ]…”

Section: Introductionmentioning

confidence: 99%

The MH-WIRE, a novel coil-springe wire system

Hasan

Elkolaly²

2022

Journal of Orthodontic Science

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OBJACTIVE: The authors introduced a novel wire system aiming to achieve optimal goals of tooth movement without multiple wire changes or sophisticated wire bending. MATERIALS AND METHODS: The system was composed of a single wire for all phases of treatment. The archwire was composed of NiTi coil springs connecting delta-shaped segments of 0.018˝ × 0.025˝ Titanium Molybdenum Alloy (TMA) segments to fit the 0.018˝ × 0.025˝ bracket slot, or 0.022˝ × 0.028˝ TMA segments to fit the 0.022˝ × 0.028˝ bracket slot. The coil spring was closed and packed in design. The coil-spring loops were constructed with 3 mm lumen. The wires were designed in three sagittal forms and the system provided nine forms of archwires. RESULTS: The wire systems have been an important component of treatment since the development of orthodontic science. Over time, the philosophy has evolved from endorsing wire bending to straight-wire treatment and then to custom-made archwires. CONCLUSION: This wire system was designed to be used as a “single-wire for the case” across all stages of treatment to achieve the ideal goals without any biological damage.

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A comparative evaluation of metallurgical properties of stainless steel and TMA archwires with timolium and titanium niobium archwires - An in vitro study

Cited by 10 publications

References 1 publication

Assessment of friction resistance of four orthodontic arch wires using three ligation methods in dry and wet conditions

Assessment of friction resistance of four orthodontic arch wires using three ligation methods in dry and wet conditions

Stainless Steel: Material Facts for the Orthodontic Practitioner

The MH-WIRE, a novel coil-springe wire system

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