2018
DOI: 10.1590/2177-6709.22.3.058-062.oar
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Welding strength of NiTi wires

Abstract: Objective: To identify the appropriate power level for electric welding of three commercial brands of nickel-titanium (NiTi) wires. Methods: Ninety pairs of 0.018-in and 0.017 × 0.025-in NiTi wires were divided into three groups according to their manufacturers - GI (Orthometric, Marília, Brazil), GII (3M OralCare, St. Paul, CA) and GIII (GAC,York, PA) - and welded by electrical resistance. Each group was divided into subgroups of 5 pairs of wires, in which welding was done with different power levels. In GI a… Show more

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Cited by 3 publications
(3 citation statements)
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“…All welding techniques altered the original properties of the wires, with significant differences between the methods. Despite this reduced resistance, all techniques generated structures strong enough to withstand orthodontic forces (Mathew et al, 2016;Mesquita et al, 2018;Muguruma et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…All welding techniques altered the original properties of the wires, with significant differences between the methods. Despite this reduced resistance, all techniques generated structures strong enough to withstand orthodontic forces (Mathew et al, 2016;Mesquita et al, 2018;Muguruma et al, 2018).…”
Section: Discussionmentioning
confidence: 99%
“…For a fraction of a second, a high-intensity current is passed, which develops heat within the area in contact with the electrodes, allowing for localized fusion. The solidification of the metal, which occurs while the electrodes are still pressed, leads to the formation of the welding point [70]. The melting of the metal occurs only within the contact area with the electrodes.…”
Section: Electric Spot Weldingmentioning
confidence: 99%
“…Resistance spot welding was successfully used to join cylindrical NiTinol wire with rectangular one for orthodontic applications [22]. The kind of orthodontic wires, made of NiTinol and used for tooth adjustment, improve the design flexibility by fabricating a small piece of NiTinol wire with a leveling wire.…”
Section: Inevitability and Obligations For Nitinol Weldingmentioning
confidence: 99%