Comparison of multiforce nickel–titanium wires to multistrand wires without force zones in bending and torque measurements

Sanders, Eva; Johannessen, Leif; Nadal, Jennifer; Jäger, Andreas; Bourauel, Christoph

doi:10.1007/s00056-021-00321-2

Cited by 7 publications

(13 citation statements)

References 25 publications

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“…A recent study by L. Lombardo et al [ 14 ] performed on several multi-force orthodontic archwires (Ni-Ti Bio-Active GC ® ); Ni-Ti MultiForce Bio-Vis (ACME ® ) and (MultiForce Bio-Vis, ACME ® ) found that the frontal segment released 0.6N(63 cN); the premolar 1.09 N (109 cN) and the molar 1.28 N (128 cN). Sanders et al [ 13 ] compare rectangular multi-force nickel-titanium wires with rectangular wires with one force zone. In their study, they used the Orthodontic Measuring and Simulation System.…”

Section: Discussionmentioning

confidence: 99%

“…From the research of the orthodontic literature [ 13 , 14 , 15 ], we found that the information is insufficient for the multi-force archwires TriTanium ® and Bio-Active ® , used in clinical orthodontic practice (in-vivo use). When choosing an appropriate archwire for a certain stage of orthodontic treatment with a fixed technique, information about the mechanical properties is of the utmost importance for the practitioners.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Clinical Use on the Mechanical Properties of Bio-Active® (BA) and TriTanium® (TR) Multiforce Nickel-Titanium Orthodontic Archwires

et al. 2023

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Multiforce orthodontic archwires are thermodynamic wires made of nickel-titanium alloy (Ni-Ti). They release biologically tolerable forces along their length, progressively increasing from front to back. The frontal archwires’ segments distribute the weakest force: the premolar, the greater, and the molar, the greatest. The aim of the present study was to determine the influence of clinical use on the mechanical properties of two types of multi-force orthodontic archwires (TriTanium®, American orthodontics; Bio-Active®, GC) with dimensions of 0.016 × 0.022 inches for periods of up to 8 weeks and over 8 weeks of in-vivo use. A three-point bending test was used, and the data gained is statistically analyzed through a multi-variance comparison Mann-Whitney test. We found that after uses of up to 8 weeks and over 8 weeks, the shape memory effect and superelasticity are preserved, as well as the tendency for differential force release along the length of the archwires is kept.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Clinical Use on the Mechanical Properties of Bio-Active® (BA) and TriTanium® (TR) Multiforce Nickel-Titanium Orthodontic Archwires

et al. 2023

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“…However, the authors did not recommend the use of the tested multizone wires for tooth displacements more than 1.5 mm. 19 Another study demonstrated a force difference between the posterior and anterior segments of multizone archwires to be at least 45%. 34 Additionally, the present investigation compared new and retrieved wire pieces.…”

Section: Three-point Bending Test and Ebmentioning

confidence: 98%

“…The sample size was calculated based on a recent in vitro experiment, which measured the differences in the force magnitude between the posterior and the anterior segments of similar wires. 19 The results showed that a sample of four pairs of measurements would be required for the test to detect the resulting difference with a power of 80%. However, the present study mea- https://doi.org/10.4041/kjod22.183 sured a total number of 12 retrieved and new wires.…”

Section: Sample Size Calculationmentioning

confidence: 99%

Thermo-mechanical properties in bending of a multizone nickel-titanium archwire: A retrieval analysis

et al. 2023

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Objective: This study aimed to compare the mechanical and thermal properties in the anterior and posterior segments of new and retrieved specimens of a commercially available multizone superelastic nickel-titanium (NiTi) archwire. Methods:The following groups of 0.016 × 0.022-inch Bioforce NiTi archwires were compared: a) anterior and b) posterior segments of new specimens and c) anterior and d) posterior segments of retrieved specimens. Six specimens were evaluated in each group, by three-point bending and bend and free recovery tests. Bending moduli (Eb) were calculated. Furthermore, the new specimens were evaluated with scanning electron microscopy/energy-dispersive X-ray spectrometry. A multiple linear regression model with a random intercept at the wire level was applied for data analysis. Results: The forces in the posterior segments or new specimens were higher than those recorded in the anterior segments or retrieved specimens, respectively. Accordingly, Eb also varied. Higher austenite start and austenite finish (Af) temperatures were recorded in the anterior segments. No statistically significant differences were found for these temperatures between retrieved and new wires. The mean elemental composition was (weight percentage): Ni, 52.6 ± 0.5; Ti, 47.4 ± 0.5. Conclusions:The existence of multiple force zones was confirmed in new and retrieved Bioforce archwires. The retrieved archwires demonstrated lower forces during the initial stages of deactivation in three-point bending tests, compared with new specimens. The Af temperature of these archwires may lie higher than the regular intraoral temperature. Even at 2 mm deflections, the forces recorded from these archwires may lie beyond biologically safe limits.

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“…(Franco et al 2015) Sanders en 2021 en su estudio por averiguar la efectividad de expresión de torque, incluyo 1 brackets de autoligado pasivo, 1 de autoligado activo y 1 de ligadura convencional elastomérica, determinó que el torque logró una mayor expresión en los brackets de autoligado activo y en los convencionales a los que se les coloco ligadura metálica en comparación con los brackets de autoligado pasivo, además de que los dos primeros no mostraron juego torsional. (Sanders et al 2021) Badawi en 2008 comparo la efectividad de expresión del torque entre 1 brackets de autoligado activo y 1 autoligado pasivo, en donde determino que existe mayor eficacia por parte de los brackets de autoligado activo en cuanto a la expresión del torque, además de que el rango de activación del torque para los activos es mayor que para los pasivos debido a que su tapa presiona el arco. (Badawi et al 2008)…”

Section: Brackets De Autoligado Pasivounclassified

Expresión del torque en brackets de auto ligado activo versus el pasivo

Salazar-Ojeda

Ramírez-Romero

2022

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Los brackets de autoligado se han hecho populares en los últimos 10 años, su importancia radica en el modo de ligadura que utilizan y los beneficios que representa. Existen dos tipos, los autoligados activos en donde la compuerta tiene contacto directo con el arco metálico, y autoligado pasivo en donde los brackets actúan como tubos principalmente en la etapa inicial del tratamiento ortodóncico. El objetivo de esta revisión de la literatura es conocer el torque de los brackets de autoligado activo versus el, así como también actualizar datos importantes de los mismos. Se recopilaron 28 artículos científicos de la base de datos Scopus, PubMed, Web of Science, Portal Regional de la Bvs, Scielo, los cuales aportaron evidencia a partir de estudios in vitro, en donde la eficacia de expresión de torque es superior en los brackets de autoligado activo durante las etapas finales del tratamiento.

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Comparison of multiforce nickel–titanium wires to multistrand wires without force zones in bending and torque measurements

Cited by 7 publications

References 25 publications

Effects of Clinical Use on the Mechanical Properties of Bio-Active® (BA) and TriTanium® (TR) Multiforce Nickel-Titanium Orthodontic Archwires

Effects of Clinical Use on the Mechanical Properties of Bio-Active® (BA) and TriTanium® (TR) Multiforce Nickel-Titanium Orthodontic Archwires

Thermo-mechanical properties in bending of a multizone nickel-titanium archwire: A retrieval analysis

Expresión del torque en brackets de auto ligado activo versus el pasivo

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