Metal ion release from new and recycled stainless steel brackets

doi:10.1093/ejo/26.2.171

中山醫學大學機構典藏 CSMUIR > 口腔醫學院 > 牙醫學系暨碩士班 > 期刊論文 > Item 310902500/18282

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/18282

Title:	Metal ion release from new and recycled stainless steel brackets
Authors:	Huang, T.-H.;Ding, S.-J.;Min, Y.;Kao, C.-T.
Date:	2004
Issue Date:	2017-08-09T04:44:43Z (UTC)
ISSN:	1415387
Abstract:	As orthodontic appliances can corrode with time in the oral environment, the aim of this study was to compare the release of metal ions from new and recycled brackets immersed in buffers of different pH values over a 48 week period. To simulate commercial recycling, the stainless steel brackets were divided into two groups: new and recycled. The bases of the latter were coated with adhesive and the brackets were heat treated before being immersed in the test solution for 48 weeks. The release of nickel, chromium, iron, copper, cobalt and manganese ions was analysed by atomic absorption spectrophotometry. Differences were compared using one-way analysis of variance. The results showed that recycled brackets released more ions than new brackets (P < 0.05). Brackets immersed in solutions of pH 4 released more ions than those immersed in solutions of pH 7, and the total amount of ions released increased with time over the 48 week period (P < 0.05). This study demonstrates that both new and recycled brackets will corrode in the oral environment. To avoid clinical side-effects, metal brackets should be made more resistant to corrosion, and recycled brackets should not be used. © European Orthodontic Society 2004; all rights reserved.
URI:	http://dx.doi.org/10.1093/ejo/26.2.171 https://www.scopus.com/inward/record.uri?eid=2-s2.0-2942644822&doi=10.1093%2fejo%2f26.2.171&partnerID=40&md5=63f595b615c50bffa73d3c647e32e783 https://ir.csmu.edu.tw:8080/ir/handle/310902500/18282
Relation:	European Journal of Orthodontics 26(2) ,171-177
Appears in Collections:	[牙醫學系暨碩士班] 期刊論文

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