2019
DOI: 10.1007/s00784-019-03160-z
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Metal ion quantification in the saliva of patients with lingual arch appliances using silver solder, laser, or TIG welding

Abstract: ObjectivesQuantify metal ion release in the saliva, considering that orthodontic appliances with soldered or welded parts may suffer corrosion and release metal ions into saliva, which can trigger adverse effects, such as hypersensitivity. MethodsSixty-four patients were distributed into four groups: G1 (control), G2 (silver-soldered lingual arch), G3 (laser-welded lingual arch), and G4 (TIG-welded lingual arch). Saliva samples were collected at four different points and were analyzed for ion release with ICP-… Show more

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Cited by 8 publications
(5 citation statements)
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“…The increase in Ni and Cr ions has been reported in saliva, with high initial values but which decrease over time and depending on various factors such as the pH of the solution or mouthwash. 27 In this sense, the highest values reported by the included study were reported for Listerine with an acidic pH (4 ± 0.5) compared to other mouthwashes with a different pH (7 ± 0.5). However, the values also fluctuated over time, with nickel–titanium wires being more susceptible to ion release compared to stainless steel wires.…”
Section: Discussionmentioning
confidence: 70%
“…The increase in Ni and Cr ions has been reported in saliva, with high initial values but which decrease over time and depending on various factors such as the pH of the solution or mouthwash. 27 In this sense, the highest values reported by the included study were reported for Listerine with an acidic pH (4 ± 0.5) compared to other mouthwashes with a different pH (7 ± 0.5). However, the values also fluctuated over time, with nickel–titanium wires being more susceptible to ion release compared to stainless steel wires.…”
Section: Discussionmentioning
confidence: 70%
“…The assessment of the ions eluted was performed using spectrophotometry, a commonly used method for this type of evaluation. [ 5 6 7 8 9 10 13 ] Ions Fe, Ni, Cr, Zn, Cu, and Ag were quantified. In addition to the materials listed by the manufacturers, Cd was also found in the solutions that stayed in contact with the silver-soldered bands.…”
Section: Discussionmentioning
confidence: 99%
“…[ 2 ] Metals in contact with saliva are subject to corrosion, and this is the main concern relating to orthodontic appliance biocompatibility. [ 3 4 ] Orthodontic appliances may release amounts of metal ions;[ 5 6 7 8 9 10 ] this can lead to diverse toxic effects such as DNA damages and oral lesions. [ 11 12 ] Some studies have already shown the release of metal ions into saliva and the cytotoxicity and genotoxicity of silver solder in oral cells.…”
Section: Introductionmentioning
confidence: 99%
“…The placement of dental appliances alone is associated with metal ion release into saliva. The number of ions released is typically well below the toxic limit under normal conditions, but complications may arise in patients with hypersensitivity, particularly to nickel [20,21]. Hypersensitivity to Ni is a type IV T-cell mediated delayed-onset hypersensitivity [22].…”
Section: Discussionmentioning
confidence: 99%