Relevant bibliographies by topics / Wire Wire Orthodontic Wires

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Academic literature on the topic 'Wire Wire Orthodontic Wires'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Wire Wire Orthodontic Wires"

1

Batista, Deric Meschiari, Melissa Faccini, Fabricio Pinelli Valarelli, Rodrigo Hermont Cançado, Renata Cristina Oliveira, Ricardo Cesar Gobbi de Oliveira, and Karina Maria Salvatore Freitas. "Attractiveness of different esthetic orthodontic wires." Dental Press Journal of Orthodontics 25, no. 6 (December 2020): 27–32. http://dx.doi.org/10.1590/2177-6709.25.6.027-032.oar.

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ABSTRACT Objective: The aim of this study was to evaluate the attractiveness of different types of esthetic orthodontic wires by laypeople and dentists. Methods: Five different types of orthodontic wires were evaluated: three esthetic wires (Teflon-coated, epoxy resin-coated and rhodium-coated wires), and two metallic wires (stainless steel and NiTi), as control. Monocrystalline ceramic brackets were installed in the maxillary arch of a patient presenting good dental alignment. The five evaluated wires were attached to the orthodontic appliance with an esthetic silicone elastic and photographed. The photographs were evaluated by 163 individuals, 110 dentists and 53 laypeople. The data were statistically evaluated by two-way ANOVA and one-way ANOVA, followed by Tukey tests. Results: There was a statistically significant difference in the attractiveness among the wires evaluated; the most esthetic was the rhodium-coated wire, followed by the epoxy resin-coated wire and, finally, the Teflon-coated wire, with no significant difference from the stainless steel and NiTi control archwires. There was no significant difference between the groups of evaluators. Conclusion: The most attractive was the rhodium-coated wire, followed by the epoxy resin-coated wire and, finally, the least attractive wire was the Teflon-coated wire, without statistically significant difference to the stainless steel and NiTi wires, used as control.
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Anuwongnukroh, Niwat, Surachai Dechkunakorn, Pornkiat Churnjitapirom, Ekkapot Sukhanun, Tunwa Intrarasuksanti, Pattara Jarounkonkit, and Sutipong Sarakul. "Comparison of Properties between General Purpose Stainless Steel Wire and Commercial Orthodontic Stainless Steel Wire." Advanced Materials Research 378-379 (October 2011): 706–10. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.706.

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In Thailand, commercial orthodontic stainless steel wires are imported from overseas and expensive. However, lower cost general purpose stainless steel wires, the same type and number as commercial orthodontic stainless steel wires may be used for orthodontic purposes. Objective: This study aimed to determine the physical, mechanical and chemical properties of general purpose stainless steel wire compared with commercial orthodontic stainless steel wires. Materials and Method: Two commercial orthodontic stainless steel wires (Ormco and Highland) and general purpose stainless steel wire (SUS 304H) were evaluated. The physical and mechanical properties were studied according to ISO 15841:2006 and corrosion resistance was studied according to ISO 10271:2001. Surface characteristics and composition were studied by scanning electron microscope (SEM) and electron probe micro analyzer, respectively. Results: The experiment indicated that SUS 304H had the diameter and mechanical properties in the range of orthodontic stainless steel wires. The surface characteristics SUS 304H were similar from observation by SEM magnifications but SUS 304H had lower corrosion resistance due to lower nickel content. The composition confirmed that the three samples wires were genuine type 304. Conclusion: SUS 304H properties are comparable to commercial orthodontic wire properties.
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KOIKE, Fernando, Hiroshi MARUO, Rogério LACERDA-SANTOS, Matheus Melo PITHON, and Orlando Motohiro TANAKA. "Mechanical properties of orthodontic wires on ceramic brackets associated with low friction ligatures." Revista de Odontologia da UNESP 46, no. 3 (March 28, 2017): 125–30. http://dx.doi.org/10.1590/1807-2577.19716.

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Abstract Introduction Few studies investigated the mechanical properties of orthodontic wires on ceramic brackets associated the ligatures. Objective This study aimed to compare the load-deflection of orthodontic wires with round section of 0.016” made of stainless steel (SS), nickel-titanium (NiTi) and glass fiber-reinforced polymer composite (GFRPC). Material and method Sixty specimens obtained from 10 sectioned pre-contoured arches (TP Orthodontics), were divided into 3 groups of 20 according to each type of material (1 esthetic-type wire and 2 not esthetic) and length of 50 mm. The methodology consisted of a 3-point bending test using esthetic ceramic brackets (INVU, TP Orthodontics, Edgewise, 0.022”x 0.025”) as points of support. The tensile tests were performed on a mechanical test machine, at a speed of 10 mm/min, deflection of 1 mm, 2 mm and 3 mm. Friedman’s Non Parametric Multiple comparisons test was used (P<0.05). Result The nickel-titanium wire presented smaller load/ deflection compared with stainless steel. GFRPC wires had lower strength values among all groups evaluated (P<.05). The steel wire showed permanent deformation after 3 mm deflection, NiTi wire demonstrated memory effect and the esthetic type had fractures with loss of strength. Conclusion It can be concluded that steel wires have high strength values, requiring the incorporation of loops and folds to reduce the load / deflection. NiTi and GFRPC wires produced low levels of force, however the esthetic wire was shown to fracture and break.
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Pratomo, Harris Gadih, Endah Mardiati, Eky Soeria Soemantri, and Ida Ayu Evangelina. "Deflection test on different orthodontic wire materials sized 0.016 x 0.022 inches." Majalah Kedokteran Gigi Indonesia 4, no. 3 (September 6, 2019): 142. http://dx.doi.org/10.22146/majkedgiind.31236.

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The development of technology in orthodontic field produces some orthodontic wires that have different deflection abilities. Loading force is the force needed to place an orthodontic wire in bracket slot (activation). Unloading force is the force produced by an orthodontic wire to move tooth (deactivation). Deflection test with three-point bending technique is a technique that is often used to determine the magnitude of the activation and deactivation force of orthodontic wire. Stainless steel (SS), nickel titanium (NiTi), copper nickel titanium (CuNiTi), and beta titanium (TMA), are the types of frequently used wires. This study aimed to compare loading and unloading force on the deflection test of SS, NiTi, CuNiTi, and TMA orthodontic wires sized 0.016 x 0.022 inch on the load-deflection graph. This is a laboratoryexperimental research on a total of 16 pieces of SS, NiTi, CuNiTi, and TMA orthodontic wires sized 0.016 x 0.022 inches. The group was divided based on the type of material. The deflection test was performed using a universal testing machine with a press speed of 5 mm/minute. Loading and unloading forces were recorded on deflections of 0.5; 1; and1.5 mm. Statistical tests of differences among groups were carried out by ANOVA analysis (p-value ≤ 0.05) and post-hoc analysis with T-test. There were significant differences in the loading and unloading forces recorded on deflections of 0.5; 1; and 1.5 mm; except for deflections of 0.5 mm of the SS and nickel-titanium wires. The wire deflection force fromthe lowest to the highest was CuNiTi wire, nickel-titanium wire, TMA wire, and stainless-steel wire.
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5

Sarul, Michał, Marcin Kozakiewicz, and Kamil Jurczyszyn. "Surface Evaluation of Orthodontic Wires Using Texture and Fractal Dimension Analysis." Materials 14, no. 13 (July 1, 2021): 3688. http://dx.doi.org/10.3390/ma14133688.

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Mechanical properties of orthodontic wires can have a very significant impact both on the resistance of the entire appliance to the oral cavity conditions and directly on the effectiveness of the therapy. Striving to achieve repeatability of mechanical characteristics of orthodontic wires of a given type should be an obligatory condition in their production. To achieve it, these components should be thoroughly analyzed using various mechanical tests. Twenty-four steel and nickel-titanium orthodontic wires from four different manufacturers were examined. Each wire was subjected to fractal dimension analysis and texture analysis. The two sides of each wire were compared against each other, as well as in terms of variation in the surface area for each wire type made by different manufacturers. Most wires showed significant variation in fractal dimension and texture, both when comparing two sides of the same wire and between individual wires of a given type made by a single manufacturer. When conducting research and clinically using orthodontic wires made of Ni-Ti alloys and stainless steel, it should be assumed that the surface of orthodontic wires shows a significant degree of variation, and wires of the same type from the same manufacturer may differ significantly in this respect.
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Noonai, Nakhon, Anak Khantachawana, Pongpan Kaewtatip, and Julathep Kajornchaiyakul. "Improvement of Mechanical Properties and Transformation Behavior of NiTi Drawn Wires for Orthodontics Applications." Advanced Materials Research 378-379 (October 2011): 623–27. http://dx.doi.org/10.4028/www.scientific.net/amr.378-379.623.

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NiTi shape memory alloy is widely used in dental applications such as orthodontics arch wire, mini screw implant, orthodontics spring, etc., because of its favorable superelasticity and shape memory effect. Wire drawing is a fundamental manufacturing process used for producing orthodontics arch wires. It is well known that cold-work occurred during wire drawing operation is also important to control mechanical properties and transformation temperature of NiTi wires. Thus, the purpose of this work is to study the effect of cold working by means of reduction ratio of cross -sectional area and heat-treatment temperatures on transformation and mechanical behavior of the drawn wires for utilized as orthodontic wires. The wire material used in this study is Ni51.4Ti48.6 (at%) alloy with various initial diameters with targeted wire diameter of 0.51mm (0.02 inch). The die for wire drawing is made of tungsten carbide which is inserted into a steel case. The dies were designed to have different reduction ratio of cross sectional area for 4 levels; 10%, 20%, 30% and 40%, respectively. The lubricant used in this study is sodium stearate powder. In order to investigate the influences of heat-treatment temperatures, the drawn wires are heat-treated at 400 °C and 600 °C for 3.6ks. The results showed that percentages of reduction of cross sectional area and heat-treatment temperature strongly affect mechanical properties and transformation temperatures. Superelasticity was confirmed in an alloy heat-treated at 400 °C. The results obtained can be used to determine the optimum properties of NiTi wire in order to utilized as orthodontics arch wires.
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Anuwongnukroh, Niwat, Yosdhorn Chuankrerkkul, Surachai Dechkunakorn, Pornkiat Churnjitapirom, and Theeralaksna Suddhasthira. "Bending Properties of General Purpose Stainless Steel Wire Formed for Orthodontic Use." Advanced Materials Research 746 (August 2013): 394–99. http://dx.doi.org/10.4028/www.scientific.net/amr.746.394.

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The archwire is generally used in fixed appliances for orthodontic treatment to correct dental malocclusion. However, it is interesting to know whether general purpose stainless steel wire could replace commercial orthodontic archwire in orthodontic practice for economic reasons. The purpose of this study was to determine the bending properties of general purpose stainless steel wire compared with commercial orthodontic stainless steel wires after forming as an archwire for orthodontic use. The samples used in this study were 90 general purpose and 45 commercial (Highland) round stainless steel wires in 0.016, 0.018, and 0.020 sizes (30 general purpose and 15 commercial wires for each size). All 15 general purpose stainless steel wires with different sizes were formed into orthodontic archwire with a Universal Testing Machine. All samples were tested (three-point bending test) for mechanical properties. The results showed no significant difference between general purpose and commercial orthodontic wires in size 0.016 for 0.1 mm offset bending force, 0.2% yield strength, and springback. Although many mechanical properties of general purpose wires differed from commercial wires, their values conformed to other previous studies within the range of clinical acceptance. In conclusion, orthodontic formed general purpose round stainless steel wires had statistically different (p <0.05) mechanical properties from commercial orthodontic stainless steel wires (Highland) but the mechanical properties were acceptable to use in orthodontic treatment.
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WANG, QIANG, YANG ZHANG, FENGYU HAO, KE YANG, and LILI TAN. "COMPARATIVE STUDY OF CLINICALLY USED NiTi ORTHODONTIC WIRES." International Journal of Modern Physics B 24, no. 30 (December 10, 2010): 5929–37. http://dx.doi.org/10.1142/s0217979210057493.

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The purpose of the study was to comparatively investigate two NiTi orthodontic wires. It is valuable to determine the phase transformation temperature and corrosion characteristics of the orthodontic wires to further study the shape memory effect and corrosion resistance properties. Optical microscope and EDX analysis were used for microstructure characteristics and composition analysis. Differential scanning calorimetry (DSC) was carried out to identify the phase transformation behavior of the two wires. Electrochemical tests in artificial saliva at 37 ±1°C including polarization and electrochemical impedance spectroscopy (EIS) were used to assess the corrosion resistance and corrosion mechanism of the wires. It was found that the transformation temperature range of A-wire (imported) is narrower while the As and Af are close to the body temperature, which is more suitable in the orthodontic operation at early stage. The corrosion current density of A-wire is lower than that of B-wire (domestically made) while the corrosion potential is higher. EIS test results indicated that the corrosion mechanism was the same. However, the oxide layer formed on the surface of A-wire is more protective.
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Takada, Megumi, Akira Nakajima, Shingo Kuroda, Shinya Horiuchi, Noriyoshi Shimizu, and Eiji Tanaka. "In vitro evaluation of frictional force of a novel elastic bendable orthodontic wire." Angle Orthodontist 88, no. 5 (May 25, 2018): 602–10. http://dx.doi.org/10.2319/111417-779.1.

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ABSTRACT Objectives: To determine the frictional force (FF) of the novel, elastic, bendable titanium-niobium (Ti-Nb) alloy orthodontic wire in stainless steel (SS) brackets and to compare it with those of titanium-nickel (Ti-Ni) and titanium-molybdenum (Ti-Mo) alloy wires. Materials and Methods: Three sizes of Ti-Nb, Ti-Ni, and Ti-Mo alloy wires were ligated with elastic modules to 0.018-inch and 0.022-inch SS brackets. The dynamic FFs between the orthodontic wires and SS brackets were measured at three bracket-wire angles (0°, 5°, and 10°) with an Instron 5567 loading apparatus (Canton, Mass). Results: FFs increased gradually with the angle and wire size. In the 0.018-inch-slot bracket, the dynamic FFs of Ti-Nb and Ti-Ni alloy wires were almost the same, and those of the Ti-Mo alloy wire were significantly greater (P&lt;0.05). FF values were 1.5–2 times greater in the 0.022-inch-slot bracket than in the 0.018-inch-slot bracket, regardless of alloy wire type, and the Ti-Mo alloy wire showed the greatest FF. Scanning electric microscopic images showed that the surface of the Ti-Mo alloy wire was much rougher than that of the Ti-Ni and Ti-Nb alloy wires. Conclusion: These findings demonstrate that the Ti-Nb alloy wire has almost the same frictional resistance as the Ti-Ni alloy wire, although it has a higher elastic modulus.
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Tangit, Nathaphon, Surachai Dechkunakorn, Niwat Anuwongnukroh, Pornkiat Churnjitapirom, and Peerapong Tua-Ngam. "Properties of Three Commercial Orthodontic Round Stainless Steel Wire." Advanced Materials Research 884-885 (January 2014): 619–24. http://dx.doi.org/10.4028/www.scientific.net/amr.884-885.619.

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Objective: This study aimed to determine and compare the diameter, mechanical properties (tensile strength: flexural strength, flexural modulus of elasticity, 0.2% yield strength and springback: three point bending test: bending stiffness and 0.1mm. offset bending force) and chemical properties (composition and corrosion resistance) of three commercial orthodontic round stainless steel wires. Materials and Method: The samples of this study are three commercial brands of orthodontic round stainless steel wires, Highland (USA), Dentaurum (Germany) and W&H (China), 0.016 inch and 0.018 inch in size. The diameter was measured by micrometer and the mechanical properties were analyzed with tensile strength and three point bending test by Universal Testing Machine according to ISO 15841:2006. The composition was evaluated by Energy Dispersive X-ray Spectrometer (EDS) and the corrosion resistance was analyzed by a potentiodynamic polarization technique according to ISO 10271:2001. The data were analyzed with the Kolmoforov-Smith test, One-way ANOVA and Tukeys test. Results: There were significant differences (p<0.05) in diameter of the three commercial brands of orthodontic round stainless steel wires in both size except 0.016 in diameter between Dentaurum and Highland stainless steel wire. In terms of tensile strength, there were significant differences (p<0.05) in the flexural strength, flexural modulus of elasticity and springback in each variable, except W&H stainless steel wire with flexural strength in 0.016 and 0.018 wire size and springback in 0.018 wire size. However, in 0.2% yield strength, there was no significant difference in each brand and size except Dentaurum and Highland stainless steel in 0.018 wire size. For the three point bending test, there were significant differences (p<0.05) in bending stiffness and 0.1mm. offset bending force of each brand and size except 0.1mm. offset bending force between Dentaurum and Highland stainless steel in 0.016 wire size. In terms of chemical properties, there were the same elements but difference was found in percentage of each element, and W&H stainless steel had the least corrosion resistance. Conclusion: There were significant differences among three commercial orthodontic stainless steel wires in diameters, mechanical properties and chemical properties which will produce different force on each wire during tooth movement. All three brands, however, are acceptable for orthodontic use. The orthodontist should be aware of these differences in using stainless steel for orthodontic treatment.
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Dissertations / Theses on the topic "Wire Wire Orthodontic Wires"

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Nakandakari, Cláudia [UNESP]. "Caracterização química, metalúrgica e estudo das propriedades mecânicas dos fios ortodônticos de titânio-molibdênio TMA." Universidade Estadual Paulista (UNESP), 2000. http://hdl.handle.net/11449/95816.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Essa pesquisa tem por objetivo a caracterização química, metalográfica e estudo das propriedades mecânicas de fios ortodônticos de titânio-molibdênio - TMA. As amostras foram submetidas a análise química e metalográfica, empregando-se microscopia eletrônica de varredura - MEV com espectroscopia por dispersão de energia de raios X - EDX e mapeamento elementar, determinando-se uma análise semi quantitativa e qualitativa dos elementos (Ti, Mo, Zr e Sn) presentes na amostra. Para se avaliar as propriedades mecânicas foram realizados ensaios de tração até a ruptura dos corpos-de-prova, análise da fratura e ensaios de dureza. Os resultados encontrados foram comparados com os dos fios de aço inoxidável, por serem considerados padrão para a Odontologia. Baseando-se na análise dos dados experimentais, constatou-se que as ligas de TMA em relação às ligas de aço, apresentam resiliência semelhante com maior flexibilidade devido a menor rigidez e baixo módulo de elasticidade. Finalmente, pode-se apresentar subsídios para a seleção de ligas metálicas adequadas as necessidades de cada fase do tratamento ortodôntico.
The aim of this research is the chemical, metalographic characterization and study of the mechanical properties of the titanium-molibidenium orthodontic wire - TMA. The samples were submitted to chemical and metalographic analyses, using na eletronic scanning microscope (MEV) witth spectroscopy by X-ray energy dispersion (EDX) and elementar maping, determinating a semi-qualitative and quantitative analyses of the elements (Ti, Mo, Zr and Sn) present in the sample. To evaluate the mechanical properties it were performed tensile test till the rupture of the body samples frature analyses and hardness test. The found results were compared to the two still wire, because they were considered to be standard for dentistry. Based on the analyses of these experimental data we could observe that the TMA alloy is compared to the steel alloy, presenting similar resistence with higher flexibility due to lower hardness and low elasticity module. At last we were able to present subsides for the selection of the best metal alloy required to the necessity of each Orthodontic treatment phase.
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Rodrigues, Kelly Regina Thomé Portugal. "Análise comparativa in vitro da resistência friccional entre braquetes metálicos e estéticos." Universidade Metodista de São Paulo, 2011. http://tede.metodista.br/jspui/handle/tede/1200.

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The aim of this in vitro study was to compare the friction resistance among conventional and aesthetic orthodontic brackets with metal and vitreous slot with round and rectangular wires of different sections, simulating some situations without wire displacement, 2 mm of displacement and binding of 3o. A group of 125 brackets from 5 brands (Roth Standard, Composite, Elation, Invu and Radiance) was tested, 25 brackets for each brand. Five brackets were set on a device in order to simulate a top right hemi-arch (lateral and central incisors, canine, first and second premolars) and after that, the device was coupled on an universal testing machine EMIC DL2000. The archwires 0.016 , 0.018 and 0.017 x 0.025 NiTi were used on the no displacement and 2 mm displacement tests, while the wires 0.017 x 0.025 , 0.019 x 0.025 and 0.021 x 0.025 stainless steel were used to simulate the binding effect. Variance analysis and Tukey tests (p<0,05) were run to compare brackets with different archwires sizes and angulation. The study demonstrated that the polycarbonate aesthetic bracket Composite had the least friction in all archwires sizes tested. On the other hand, the monocrystalline ceramic bracket Radiance showed the greatest frictional resistance on the tests without wire displacement. Studies with archwire displacement and binding showed a statistically significant difference between the five accessories, of which Composite, Roth Standard, Elation, Invu and Radiance produced the highest friction resistance, in increasing order. Moreover, the insertion of a metal slot in the polycarbonate bracket Elation significantly reduced the friction. However, these friction was greater than the one from a metal bracket. To sum up, the insertion of a vitreous slot in the polycrystalline ceramic bracket Invu offered a greater surface smoothness, reducing consequently the friction and favoring the displacement.
O presente estudo visou comparar in vitro o atrito produzido por braquetes convencionais metálicos e estéticos com canaleta metálica e vítrea quando inseridos fios de secções redonda e retangular de diferentes dimensões, simulando situações sem deslocamento, com deslocamento de 2 mm e com simulação do efeito binding 3º. Foram utilizados 125 braquetes de 5 marcas comerciais (Roth Standard, Composite, Elation, Invu e Radiance), sendo 25 braquetes para cada corpo de prova. Para os ensaios laboratoriais, foram colados 5 braquetes simulando uma hemi-arcada superior direita (incisivos central e lateral, canino, primeiro e segundo premolares) em um dispositivo para posicionamento dos braquetes, sendo este acoplado à máquina universal de ensaios EMIC DL2000. Foram empregados os fios 0,016 , 0,018 e 0,017 x 0,025 NiTi para realização dos ensaios sem deslocamento e com deslocamento de 2 mm e os fios de secção 0,017 x 0,025 , 0,019 x 0,025 e 0,021 x 0,025 CrNi para realização dos ensaios com angulação zero grau e 3º. Para a comparação entre os braquetes nos diferentes fios e angulações, foi utilizada a Análise de Variância e o teste de Tukey (p<0,05). Os resultados demonstraram que nos ensaios sem deslocamento o braquete estético de policarbonato Composite apresentou menor atrito em todos os fios avaliados, enquanto o maior atrito em todas as combinações realizadas foi observado no braquete estético cerâmico monocristalino Radiance em relação aos demais braquetes. Nos ensaios com deslocamento de 2 mm e simulação do efeito binding 3º, os resultados foram semelhantes aos observados nos ensaios sem deslocamento. Contudo, houve uma diferença estatisticamente significante entre os cinco corpos de prova, sendo o atrito verificado, respectivamente e de forma crescente, nos braquetes Composite, Roth Standard, Elation, Invu e Radiance. Pôde-se concluir que a resistência friccional teve influência da composição dos braquetes, diâmetro dos fios e tipo de ensaio realizado (deslocamento de 2 mm e angulação de 3º). Além disso, a inserção da canaleta metálica no braquete estético de policarbonato Elation reduziu de forma estatisticamente significante o atrito, porém esse foi maior do que o gerado por um braquete convencional metálico e, por fim, a incorporação da canaleta vítrea no braquete estético cerâmico policristalino Invu ofereceu uma maior lisura de superfície, reduzindo as irregularidades e imperfeições presentes na canaleta o que levou, consequentemente, a uma redução estatisticamente significante no atrito, o que demonstra que a modificação em sua canaleta favoreceu o deslocamento e reduziu de forma efetiva essa resistência à fricção.
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Nakandakari, Cláudia. "Caracterização química, metalúrgica e estudo das propriedades mecânicas dos fios ortodônticos de titânio-molibdênio TMA /." Araraquara : [s.n.], 2000. http://hdl.handle.net/11449/95816.

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Resumo: Essa pesquisa tem por objetivo a caracterização química, metalográfica e estudo das propriedades mecânicas de fios ortodônticos de titânio-molibdênio - TMA. As amostras foram submetidas a análise química e metalográfica, empregando-se microscopia eletrônica de varredura - MEV com espectroscopia por dispersão de energia de raios X - EDX e mapeamento elementar, determinando-se uma análise semi quantitativa e qualitativa dos elementos (Ti, Mo, Zr e Sn) presentes na amostra. Para se avaliar as propriedades mecânicas foram realizados ensaios de tração até a ruptura dos corpos-de-prova, análise da fratura e ensaios de dureza. Os resultados encontrados foram comparados com os dos fios de aço inoxidável, por serem considerados padrão para a Odontologia. Baseando-se na análise dos dados experimentais, constatou-se que as ligas de TMA em relação às ligas de aço, apresentam resiliência semelhante com maior flexibilidade devido a menor rigidez e baixo módulo de elasticidade. Finalmente, pode-se apresentar subsídios para a seleção de ligas metálicas adequadas as necessidades de cada fase do tratamento ortodôntico.
Abstract: The aim of this research is the chemical, metalographic characterization and study of the mechanical properties of the titanium-molibidenium orthodontic wire - TMA. The samples were submitted to chemical and metalographic analyses, using na eletronic scanning microscope (MEV) witth spectroscopy by X-ray energy dispersion (EDX) and elementar maping, determinating a semi-qualitative and quantitative analyses of the elements (Ti, Mo, Zr and Sn) present in the sample. To evaluate the mechanical properties it were performed tensile test till the rupture of the body samples frature analyses and hardness test. The found results were compared to the two still wire, because they were considered to be standard for dentistry. Based on the analyses of these experimental data we could observe that the TMA alloy is compared to the steel alloy, presenting similar resistence with higher flexibility due to lower hardness and low elasticity module. At last we were able to present subsides for the selection of the best metal alloy required to the necessity of each Orthodontic treatment phase.
Orientador: Antônio Carlos Guastaldi
Coorientador: Maurício Tatsuei Sakima
Banca: Welingtom Dinelli
Banca: José Fernando Castanha Henriques
Mestre
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Santoro, Miller Zaroni. "COMPARAÇÃO DAS FORÇAS DE DEFLEXÃO LIBERADAS ENTRE OS FIOS ORTODÔNTICOS ESTÉTICOS E SUA RELAÇÃO COM O REVESTIMENTO." Universidade Metodista de São Paulo, 2011. http://tede.metodista.br/jspui/handle/tede/1287.

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The aim of this study was to compare the forces of deflection in vitro between aesthetic and wire NiTi wires, to check the maximum force and plateau region and determine its correlation with the diameter of the wire with and without coating. Ten trials were conducted in seven brands of bows pre-skirted, six-wire aesthetic (InVu (I), Optis (O), Flexy Super Elastic Esthetic (FSEE), Orthocosmetic Elastinol (OE), Niticosmetic (N), and Pro Form Coated Nitanium (PFCN)) and a superelastic NiTi wire (Nitinol Super Elastic (NSE), applying The test is three-point bending, associated with universal machine EMIC. We developed a device with ceramic brackets (Transcend), whose strings were arrested for elastic modular, and obtained the values of the force deflection at 3.0, 2.0 and 1.0 mm. The diameter of the wires with and without coating were measured using digital especímetro Micromaster. The analysis of variance with a criterion (p <0.05) showed significant difference between the wires and post-hoc Tukey test determined that the force at 3mm deflection for wire OO objetivo do presente estudo consistiu em comparar as forças de deflexão in vitro entre fios estéticos e fio NiTi, para verificar a força máxima e da região platô e determinar sua correlação com o diâmetro do fio com e sem revestimento. Foram realizados dez ensaios de sete marcas comerciais de arcos précontornados, sendo seis fios estéticos (Invu (I), Optis (O), Flexy Super Elastic Esthetic (FSEE), Niticosmetic (N), Orthocosmetic Elastinol (OE) e Pro Form Coated Nitanium (PFCN)) e um fio NiTi superelástico (Nitinol Super Elastic (NSE)), aplicando-se o teste de curvatura de três pontos, associado a máquina de ensaios universal EMIC. Desenvolveu-se um dispositivo com braquetes cerâmicos (Transcend), cujos fios foram presos por elásticos modulares, sendo obtidos os valores da força de deflexão em 3,0, 2,0 e 1,0mm. O diâmetro dos fios com e sem revestimento foram mensurados com o especímetro digital Micromaster. A análise de variância a um critério (p<0,05) mostrou diferença significante entre os fios e o teste post-hoc de Tukey determinou que a força de deflexão em 3mm para o O
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Reddick, Chad R. "A comparative study of nonextraction treatment efficiency using conventional edgewise brackets and self-ligating brackets." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2009r/reddick.pdf.

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Singh, Jagjit. "The mechanical properties and microstructure of orthodontic wires /." Title page, contents and summary only, 1992. http://web4.library.adelaide.edu.au/theses/09DM/09dms617a.pdf.

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Allen, Katherine Ruth. "Methods of testing the mechanical properties of orthodontic wires /." Title page, table of contents and summary only, 1994. http://web4.library.adelaide.edu.au/theses/09DM/09dma427.pdf.

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Cox, Stan C. "A comparative study of extraction treatment efficiency using conventional edgewise brackets and self-ligating brackets." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2008m/cox.pdf.

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Sakima, Cristiane Graciano Ponce [UNESP]. "Avaliação das propriedades mecânicas de fios de Níquel-Titânio após incorporação de dobras e/ou tratamento elétrico." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/95761.

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A possibilidade de usar fios superelásticos retangulares com níveis de força mais leves (biológicos) permitiria simultâneo alinhamento, nivelamento e torque, o que resultaria em um menor número de fios utilizados, reduzindo custos e tempo de tratamento. Existe uma tendência, principalmente na ortodontia lingual, de se dobrar fios superelásticos (manualmente ou com tratamento térmico/elétrico) para adequar o fio à forma do arco. O objetivo deste trabalho foi avaliar as propriedades mecânicas de fios de NiTi de quatro marcas comerciais diferentes (0,017 x 0,025) após dobras e tratamento elétrico. Os fios foram dobrados com alicates elétricos (sistema DERHT) e com alicate 139 e depois foram comparados com fios retos sem nenhum tratamento (grupo controle) e fios retos com tratamento elétrico sem dobras (grupo controle tratamento elétrico). Na tentativa de simular uma situação clínica, todos os fios foram testados a 36oC na máquina de testes FSI (Sistema Identificador de Forças). Foram testados usando-se braquetes autoligáveis tipo Damon, simulando ativações em segunda ordem de 0 mm a 2 mm. Foram analisadas as seguintes variáveis: força e deslocamento no ponto do limite elástico, força máxima, energia total, energia dissipada, energia perdida, força e deslocamento no início e no fim do platô, inclinação e comprimento do platô. As diferenças estatísticas para os diferentes fios, nos diferentes testes, foram avaliadas pela ANOVA. Os resultados mostraram que: (1) o tratamento elétrico afetou as propriedades mecânicas de todos os fios de maneira geral, existindo uma tendência de diminuição nos níveis de força; (2) quando os fios receberam dobras, todos perderam os platôs de superelasticidade; (3) se o uso de forças leves e constantes é desejável no tratamento ortodôntico, os fios termodinâmicos deveriam ser recomendados na seguinte ordem: Copper NiTi 400, Neo Sentalloy 100 e Copper NiTi 270.
The possibility of using superelastic rectangular Nickel-Titanium wires in early stages of treatment with light forces, could allow more three-dimensional control, a small number of wires, lowering costs and treatment time. There is a tendency, especially in lingual orthodontics of bending superelastic wires (manually or with heat treatment) to adequate the wire in the arch anatomy. The aim of this study was to evaluate the mechanical properties of four commercially available 0.017 x 0.025 inch NiTi archwires after bending and heat treatment. The wires were bent with electrical pliers (DERHT System) and with standard bird beak plier and then compared with straight wires as a control group and another electrical treatment control group. All the wires were tested at 360 C in an orthodontic wire-testing device, a so called Force System Identification (FSI) apparatus. In the FSI a two-bracket system using self ligating Damon brackets simulated second order displacements up to 2 mm. The following variables from the activation/deactivation curves were calculated: force and displacement at yield point, maximum force level, total energy up to maximum displacement, energy loss after deactivation, force and displacement at the beginning and at finish of the plateau, and the slope and length of the plateau. Any statistically significant differences in these variables for the different brands and tests were analyzed using one-way analysis of variance. The results showed that: (1) the electrical treatment affected the characteristics of all the wires tested in a different way but with a tendency of lowering the force levels. (2) When the wires were bent they all lost activation and deactivation plateau of superelasticity. (3) If the use of low and constant force levels are desirable in orthodontic treatment, the thermodynamic wires should be recommended in the following order: Copper Niti 400 , NeoSentalloy 100 and Copper Niti 270.
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Ali, Khaled Abedela Mahdi. "Application of zirconium-coated titanium wires as restorative orthodontic materials." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1532.

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Thesis submitted in fulfillment of the requirements for the degree Magister of Technology: Dental Technology In the Faculty of Health & Wellness Sciences At the Cape Peninsula University of Technology 2013
Orthodontic archwires are made from different alloys. It is now possible to match phases of treatment with orthodontic archwires according to its mechanical properties. On this basis, the titanium molybdenum alloys (TMA) in its beta phase have an excellent combination of strength and flexibility when used as archwires to apply biomechanical forces that affect tooth movement. It has recently gained increased popularity in orthodontic treatment. There are, however, disadvantages associated with the use of orthodontic archwires, such as high surface roughness, which increases friction at the archwire-brackets interface during the sliding process. The surface roughness of dental materials is of utmost importance. Properties such as desirable tensile strengths, load deflection, hardness and low modulus of elasticity and resistance against corrosion & wear determine the area of the contact surface, thereby influencing the friction. The main object of this study was to improve the strength and surface roughness of the beta-titanium orthodontic archwires (β-Ti III) and timolium archwires (TIM), taking into account of retention of the archwires strength. The following tasks were performed. Layers of Zr were deposited on the β-Ti archwires and compared with the archwire strength before and after Zr deposition. The structure of selected archwires and its composition and surface roughness was investigated before and after Zr deposition, using scanning electron microscopy (SEM) and atomic force microscopy (AFM). The force of selected archwires before and after deposition with layers of Zr by Hounsfield deflection testing was studied. Two commercially available orthodontic archwires were used in this study, namely, β-Ti III and TIM orthodontic archwires. The archwires were cut into 25 mm long specimens. In this study, the electron beam-physical vapour deposition (EB-PVD) technique was applied to deposit pure Zr (thicknesses of 5, 10, 25 and 50 nm) on selected archwires and the effects thereof were investigated using AFM, SEM and the Hounsfield deflection test. Results of SEM and AFM analysis and deflection tests showed significant differences between Zr-coated archwires compared with uncoated archwires. Zr-coated archwires (5, 10, 25 and 50 nm depositions) had reduced surface roughness compared with uncoated archwires. A high load deflection rate was exhibited by the coated β-Ti III archwires and a low load deflection rate was exhibited by the coated TIM archwires. There was a difference in load deflection rate between the coated and uncoated archwires. Deposition of 5, 10, 25 and 50 nm Zr on both types of β-Ti orthodontic archwires is recommended for even sliding mechanics due to resulting reduced surface roughness with a good load deflection rate compared with uncoated β-Ti orthodontic archwires. KEYWORDS Surface roughness Zirconium Titanium Deflection test Beta titanium orthodontic archwires Orthodontic archwires alloys Coated materials Electron beam-physical vapour deposition Scanning electron microscopy Atomic force microscopy
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Books on the topic "Wire Wire Orthodontic Wires"

1

Nakajima, Eiichirō. Manual of wire bending techniques. Chicago: Quintessence Pub., Co., 2010.

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Andrews, Lawrence F. Straight wire: The concept and appliance. San Diego, CA: L.A. Wells, 1989.

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Andrews, Lawrence F. Straight wire: The concept and appliance. San Diego: L.A. Weels, 1989.

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Mendes, Kevin C. Frictional characteristics of ion implanted orthodontic arch wires and brackets. [Toronto: Faculty of Dentistry, University of Toronto], 1995.

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Lingual orthodontics: A new approach using STb light lingual system & lingual straight wire. London [u.a.]: Quintessence, 2010.

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Gilbertson, Roger G. Working with shape memory wires. San Leandro, CA: Mondo-Tronics, 1992.

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Qi, Zhang. The fabrication and characterisation of quantum dots,wires and wire net works. Leicester: De Montfort University, 1996.

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Gilbertson, Roger G. Motorless motion!: Working with shape memory wires. 2nd ed. San Anselmo, CA: Mondo-Tronics, 1992.

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Arab, Rupert Fazal. Statistical analysis of hot-wire calibration coefficients for normal and inclined wires in heated turbulent flows. Ottawa: National Library of Canada, 1995.

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Gaston, Darilyn M. Selection of wires and circuit protective devices for STS orbiter vehichle payload electrical circuits. Houston, Tex: National Aeronautics and Space Administration, Lyndon B. Johnson Space Center, 1991.

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Book chapters on the topic "Wire Wire Orthodontic Wires"

1

Castro, S., M. J. Ponces, J. D. Lopes, M. Vasconcelos, J. C. Reis Campos, and C. Pollmann. "Orthodontic stainless steel wire and nickel release." In Biodental Engineering V, 113–14. London, UK; Boca Raton, FL: Taylor & Francis Group, [2019] |: CRC Press, 2019. http://dx.doi.org/10.1201/9780429265297-24.

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Kobayashi, S., Y. Ohgoe, K. Ozeki, Li Gei, K. K. Hirakuri, and Hideyuki Aoki. "Biocompatibility of Diamond-Like Carbon Coated NiTi Orthodontic Wire and Acrylic Resin Teeth." In Bioceramics 17, 783–86. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-961-x.783.

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Yamagata, Shuichi, Junichiro Iida, and Fumio Watari. "FRP Esthetic Orthodontic Wire and Development of Matrix Strengthening with Poly(methyl methacrylate)/Montmorillonite Nanocomposite." In Handbook of Polymernanocomposites. Processing, Performance and Application, 319–28. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-38649-7_19.

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Gill, Daljit S., and Farhad B. Naini. "The Straight Wire Appliance." In Orthodontics: Principles and Practice, 294–99. West Sussex, UK: John Wiley & Sons, Ltd,., 2013. http://dx.doi.org/10.1002/9781118785041.ch31.

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Wielopolski, Mateusz. "Examples of Molecular Wire Systems." In Testing Molecular Wires, 55–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14740-1_5.

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Magoga, M., and C. Joachim. "Tunnel Transport Through a Molecular Wire." In Atomic and Molecular Wires, 219–27. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5882-4_20.

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Wielopolski, Mateusz. "Molecule-Assisted Transport of Charges and Energy Across Donor–Wire–Acceptor Junctions." In Testing Molecular Wires, 27–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14740-1_4.

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Li, Xiao Ji, Jian Qiu Wang, En Hou Han, and Wei Ke. "Stress Corrosion Cracking of NiTi Orthodontic Wires in Sodium Fluoride Solution." In Frontiers in Materials Science and Technology, 79–82. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/0-87849-475-8.79.

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Kono, T., S. Tsukamoto, F. Sogawa, Y. Nagamune, M. Nishioka, and Y. Arakawa. "Exciton Radiative Lifetime in GaAs Quantum Wires: Wire-Width Dependence." In Nanostructures and Quantum Effects, 140–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-79232-8_18.

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Nagamune, Y., T. Kono, S. Tsukamoto, M. Nishioka, Y. Arakawa, K. Uchida, and N. Miura. "Magneto-Optical Effect in GaAs Quantum Wires: Wire-Width Dependence." In Nanostructures and Quantum Effects, 145–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-79232-8_19.

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Conference papers on the topic "Wire Wire Orthodontic Wires"

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Shimoda, Kunio, Satoki Tsuichihara, Hiroshi Takemura, Kohei Soga, Kazuhiro Suga, Wei-Jen Lai, Sunmin Kim, Zuisei Kanno, and Motohiro Uo. "Orthodontic Force and Moment Sensing Device: Influence of Deflection of Wire and Tooth’s Orientation." In 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC). IEEE, 2019. http://dx.doi.org/10.1109/smc.2019.8914173.

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Hajizadeh, Maryam, Farzan Ghalichi, Behnam Mirzakouchaki, and Shirin Shahrbaf. "Comparison of Stress Distribution Pattern in Orthodontic Bracket- Adhesive- Tooth System During Treatment Time and Debonding Stage." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82622.

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Fixed orthodontic treatment is based on effective bonding of bracket to enamel surface. During orthodontic therapy, load is applied on bracket slot by orthodontic wire, and then it is transferred to adhesive layer and enamel surface (state I). After the completion of treatment period, orthodontic brackets are debonded by load application on the incisal region of bracket-adhesive interface (state II). In order to compare the diversity in stress distribution pattern of these two states, micro CT images of maxillary premolar tooth and bracket were transformed to STL files and imported to Hypermesh software to create high quality 3D finite element models. Space between enamel and bracket was filled with orthodontic adhesive material which sets to 0.2 mm at thickest region. Mechanical property was assigned to each layer and appropriate boundary conditions were applied. By using a load distributing element RBE3, firstly 150 N shear load was applied on the bracket slot to simulate bracket-adhesive-tooth system of state I and secondly the same load was applied on the incisal area of bracket and bracket-adhesive bonding to simulate bracket-adhesive-tooth system of state II. Generated stresses on the bracket, the adhesive and the tooth in both systems were obtained and compared to each other. The Findings of this study, reveal that the effect of bonding loads was directly transform to the adhesive layer and the enamel surface; hence, treatment period would decrease. Alternatively, debonding loads would bring about higher stresses on the bracket and facilitate debonding action.
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Khonsari, S. K., N. Towhidi, M. Siadat Cheraghi, S. R. Allahkaram, and T. Rabizadeh. "Pt nanoparticles coating on orthodontic Ni-Ti wires using pulse current." In 2011 IEEE Nanotechnology Materials and Devices Conference (NMDC 2011). IEEE, 2011. http://dx.doi.org/10.1109/nmdc.2011.6155278.

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Kamalzadeh, Amin, and Leila Notash. "Wire Deactivation Methodology for Inverse Dynamics of Wire-Actuated Redundant Manipulators." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61201.

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Wire-actuated robot manipulators are generally lighter than other manipulators as actuated wires are used instead of joint actuators. The inverse dynamic modeling of these manipulators is complicated by the existence of multiple kinematic constraints as well as redundancy in actuation. In wire-actuated parallel manipulators with a constraining linkage and in tendon-driven serial manipulators, wires are used to control the joints. In these manipulators, each wire can provide a torque/force on a link about/along its revolute/prismatic passive joint in one direction, as wires only act in tension. Using one wire for each link sometimes does not fully constrain the motion of the link about/along its passive joint. Therefore, a second wire is attached to some links in a “counterbalance” configuration; i.e., the second wire can provide a “complementary” torque/force in the opposite direction of the torque/force produced by the first wire on the link about/along its passive joint. Depending on the end effector trajectory and external force at each instant, one of the mentioned two wires provides the desired direction of torque/force and the other, “counteracting wire,” imposes a “counteracting” torque/force on the link about/along its passive joint. Using more actuators than degrees of freedom (DOF) in the manipulator causes redundancy in actuation, which means that for a unique end effector trajectory and external force, inverse dynamic results (actuator torques/forces) have infinite solutions within a null space of actuator torques/forces. Obtaining a unique result within the null space requires several considerations, such as avoiding negative tensions in wires and decreasing the actuator torques/forces. The purpose of this article is to find a methodology to limit the infinite inverse dynamic solutions to one while the negative wire tensions are avoided and actuator torques/forces are relatively decreased. As explained in this article, by reducing the counteracting wire tensions, other actuator torques/forces are decreased, because a portion of other actuator torques/forces neutralizes the tensions of counteracting wires. A methodology is developed to detect the counteracting wires in real-time and to present the corresponding tensions to a low positive value; i.e., the counteracting wires are “deactivated.” The proposed methodology can be implemented in the inverse dynamic modeling of wire-actuated parallel manipulators with a constraining linkage and tendon-driven serial manipulators via using the Lagrangian method. This methodology can be used to provide optimum actuator torques/forces and avoid negative tensions in actuated wires. The methodology is implemented in the inverse dynamic modeling of a 4-DOF wire-actuated manipulator where there is one degree of actuation redundancy. In the simulation results, the inverse dynamic model based on the proposed methodology is observed to be quite robust in terms of avoiding negative wire tensions by deactivating the right actuated wire.
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Kirana, Siti Salsabila, and Elza Ibrahim Auerkari. "Genotoxicity of NiTi orthodontic wires induced by the release of metal ions." In THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0047255.

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Marini, Marco, Michela Talò, Giulia Lanzara, and Walter Lacarbonara. "Ultra-Long Nanocomposite Wire Ropes." In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/smasis2019-5688.

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Abstract Carbon nanotubes (CNT) represent an effective filler to be incorporated into polymer matrices. Their physical properties allow them to exert a remarkable strengthening effect, while their nano-scale leaves the polymer weight unaltered. Exploiting their high strength-to-weight ratio, CNT/polymer nanocomposites appear to be the ideal materials to be shaped as wires and fibers. In this work, an ad-hoc innovative extrusion process is proposed to fabricate though and ultralong CNT/polymer nanocomposite wires. The process parameters are finely tuned to produce nanocomposite filaments exhibiting optimized mechanical properties. Optical analyses validate the morphological features of the fabricated filaments having an averaged diameter of 350 μm. Monotonic tensile tests are carried out to investigate the mechanical response of wires with CNTs content ranging from 1 wt% to 3 wt%. Young’s modulus and tensile strength registered increments of 47% and 43%, respectively, when comparing the 3 wt% CNT nanocomposite wires with the neat polymer wires. Finally, cyclic tensile tests are employed to investigate the change in damping capacity that accompanies the integration of CNTs into the polymer matrix. Such optimized CNTs nanocomposite wires can be easily integrated into several devices or assembled into ropes and yarns with multifunctional, improved properties.
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Petrov, Valeri, Laura Andreeva, George Petkov, Mirella Gueorguieva, Angelina Stoyanova-Ivanova, and Stiliyan Kalitzin. "Modelling of nickel release dynamics for three types of nickel-titan orthodontic wires." In the 2nd International Conference. New York, New York, USA: ACM Press, 2019. http://dx.doi.org/10.1145/3309772.3309792.

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Bruckmann, Tobias, Lars Mikelsons, Thorsten Brandt, Manfred Hiller, and Dieter Schramm. "Design Approaches for Wire Robots." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-86720.

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Wire robots consist of a movable end-effector which is connected to the machine frame by motor driven wires. Since wires can transmit only tension, positive wire forces have to be ensured. During workspace analysis, the wires forces need to be calculated. Discrete methods do not produce satisfying results, since intermediate points on the discrete calculation grids are neglected. Using intervals instead of points leads to reliable results. Formulating the analysis problem as a Constraint-Satisfaction-Problem (CSP) allows convenient transition to the synthesis problem, i.e. to find suitable designs for practical applications. In this paper, two synthesis approaches are employed: Design-to-Workspace (i.e. calculation of an optimal robot layout for a given workspace) and an extension called Design-to-Task (i.e. calculation of the optimal robot for a specific task). To solve these optimization problems, the paper presents approaches to combine the reliability and robustness of interval-based computations with the effectiveness of available optimizer implementations.
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9

Konh, Bardia. "Finite Element Studies of Triple Actuation of Shape Memory Alloy Wires for Surgical Tools." In 2018 Design of Medical Devices Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dmd2018-6857.

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Since the early discovery in 1951 [1], shape memory alloys (SMAs) have been used in design and development of several innovative engineering systems. SMAs’ unique characteristics have introduced unconventional alternatives in design and development of advanced devices. SMA’s field of applications has covered many areas from aerospace to auto industries, and medical devices [2]. During the past couple of decades, scientists have suggested material models to predict the SMA’s shape memory effect (SME) and its superelastic behavior. The superelastic characteristic of SMAs (its capability to exhibit a large recoverable strain) has been widely used to develop innovative products including biomedical implants such as stents, artificial heart valves, orthodontic wires, frames of indestructible spectacles, etc. However, its actuation capabilities, known as SME, hasn’t been thoroughly expanded. The number of products privileging from SMA’s SME behavior has been very limited. The reason relies on the SMA’s complex material properties that depend on the stress, strain and temperature at every stage of actuation as well as the material’s processing and the thermomechanical loading history.
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Notash, Leila, and Derek McColl. "Workspace Investigation of Wire-Actuated Parallel Manipulators With Uncertainties in Wire Connections." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28228.

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In this article, the effect of uncertainties in wire connections on the workspace generation of wire-actuated parallel manipulators is investigated. The geometric representations of uncertainties in the attachments points of wires to the base and to the mobile platform are developed. Two methods for workspace generation with uncertainty are presented. The first method is based on the calculation of positive wire tensions derived from the static force/moment balance. The second method is based on the direction of the wire forces applied to the mobile platform, and does not take into account the wire tensions. The proposed methods are applied for the workspace generation of two planar wire-actuated parallel manipulators.
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Reports on the topic "Wire Wire Orthodontic Wires"

1

Cary, Samantha, Laetitia Delmau, Julie Ezold, Shannon Mahurin, Richard Mayes, and Sam Schrell. Understanding Materials Characteristics of Palladium Lanthanide Cermet Wires as a Mimic of Californium Wire Production. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/1675043.

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Weiss, Charles, William McGinley, Bradford Songer, Madeline Kuchinski, and Frank Kuchinski. Performance of active porcelain enamel coated fibers for fiber-reinforced concrete : the performance of active porcelain enamel coatings for fiber-reinforced concrete and fiber tests at the University of Louisville. Engineer Research and Development Center (U.S.), May 2021. http://dx.doi.org/10.21079/11681/40683.

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A patented active porcelain enamel coating improves both the bond between the concrete and steel reinforcement as well as its corrosion resistance. A Small Business Innovation Research (SBIR) program to develop a commercial method for production of porcelain-coated fibers was developed in 2015. Market potential of this technology with its steel/concrete bond improvements and corrosion protection suggests that it can compete with other fiber reinforcing systems, with improvements in performance, durability, and cost, especially as compared to smooth fibers incorporated into concrete slabs and beams. Preliminary testing in a Phase 1 SBIR investigation indicated that active ceramic coatings on small diameter wire significantly improved the bond between the wires and the concrete to the point that the wires achieved yield before pullout without affecting the strength of the wire. As part of an SBIR Phase 2 effort, the University of Louisville under contract for Ceramics, Composites and Coatings Inc., proposed an investigation to evaluate active enamel-coated steel fibers in typical concrete applications and in masonry grouts in both tension and compression. Evaluation of the effect of the incorporation of coated fibers into Ultra-High Performance Concrete (UHPC) was examined using flexural and compressive strength testing as well as through nanoindentation.
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