Abstract | INTRODUCTION: The purpose of this study was to examine whether nickel-titanium ( Ni-Ti) archwires cause an increase of nickel concentration in the saliva of 18 orthodontic patients to estimate the possible risk of these archwires in patients who have nickel hypersensitivity. METHODS: Saliva samples were collected before orthodontic treatment, after placement of the bands and brackets, 2 weeks later and before placing the Ni-Ti archwires, immediately after placing the Ni-Ti archwires, 4 weeks after placing the wires, and 8 weeks after placing the wires. RESULTS: By using mass spectrometry, no statistically significant differences were found in the nickel concentrations in the samples taken without appliances, in those obtained 2 weeks after placement of the bands and brackets, and 4 and 8 weeks after placement of the archwires. Samples taken immediately after placement of the bands and brackets and the Ni-Ti archwires showed slight but significant increases in nickel concentration of 78 and 56 microg per liter, respectively, compared with the pretreatment value of 34 microg per liter. CONCLUSIONS:
Nickel leaching occurred after placement of the bands and brackets and after placement of the Ni-Ti archwires, associated with an increase of the nickel ion concentration in the patient's saliva. This effect decreased within 10 weeks.
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Authors | Evangelia Petoumenou, Martin Arndt, Ludger Keilig, Susanne Reimann, Hildegard Hoederath, Theodore Eliades, Andreas Jäger, Christoph Bourauel |
Journal | American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics
(Am J Orthod Dentofacial Orthop)
Vol. 135
Issue 1
Pg. 59-65
(Jan 2009)
ISSN: 1097-6752 [Electronic] United States |
PMID | 19121502
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Dental Alloys
- titanium nickelide
- Stainless Steel
- Nickel
- Titanium
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Topics |
- Adolescent
- Child
- Corrosion
- Dental Alloys
(chemistry)
- Female
- Follow-Up Studies
- Humans
- Male
- Mass Spectrometry
- Materials Testing
- Microscopy, Electron, Scanning
- Nickel
(chemistry)
- Orthodontic Brackets
- Orthodontic Wires
- Saliva
(chemistry)
- Stainless Steel
(chemistry)
- Surface Properties
- Titanium
(chemistry)
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