Corrosion of metal orthodontic brackets and archwires caused by fluoride-containing products: Cytotoxicity, metal ion release and surface roughness

IF 0.5 Q4 DENTISTRY, ORAL SURGERY & MEDICINE

Orthodontic Waves Pub Date : 2018-06-01 DOI:10.1016/j.odw.2018.02.001

Tipanan Yanisarapan , Pasutha Thunyakitpisal , Pintu-on Chantarawaratit

{"title":"Corrosion of metal orthodontic brackets and archwires caused by fluoride-containing products: Cytotoxicity, metal ion release and surface roughness","authors":"Tipanan Yanisarapan , Pasutha Thunyakitpisal , Pintu-on Chantarawaratit","doi":"10.1016/j.odw.2018.02.001","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose</h3><p><span>The aims of this study were to determine the cytotoxicity, metal ion release and surface roughness of metal </span>orthodontic appliances after immersion in different fluoride product solutions.</p></div><div><h3>Materials and methods</h3><p><span>Twelve sets of 20 brackets and four tubes were ligated with three types of archwires<span>: stainless steel, nickel-titanium, and beta-titanium. The samples in each archwire group were divided into three subgroups and immersed in solutions of fluoride toothpaste, 1.23% acidulated phosphate fluoride (APF), or </span></span>artificial saliva<span><span> without fluoride as a control group. The immersion times were estimated from the recommended time of using each fluoride product for 3 months. The samples were immersed in cell culture medium for 7 days. Primary gingival fibroblast cell viability was determined by an </span>MTT assay<span>. Metal ion (nickel, chromium, iron, and molybdenum) release and surface roughness were measured by inductively coupled plasma mass spectroscopy and a noncontact optical 3-dimensional surface characterization and roughness measuring device, respectively. The bracket and wire surface morphology was observed using scanning electron microscopy. The data were analysed by Two-way ANOVA.</span></span></p></div><div><h3>Results</h3><p>In the APF groups, the four metal ion levels and surface roughness of the brackets and archwires significantly increased, while cell viability significantly decreased, especially in the TMA subgroup. The SEM results showed that the brackets and wires in the APF groups demonstrated more lines and grooves compared with the other groups.</p></div><div><h3>Conclusion</h3><p>Using APF gel during orthodontic treatment with fixed metal appliances should be avoided.</p></div>","PeriodicalId":43169,"journal":{"name":"Orthodontic Waves","volume":"77 2","pages":"Pages 79-89"},"PeriodicalIF":0.5000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.odw.2018.02.001","citationCount":"20","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Orthodontic Waves","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1344024117301930","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}

引用次数: 20

Abstract

Purpose

The aims of this study were to determine the cytotoxicity, metal ion release and surface roughness of metal orthodontic appliances after immersion in different fluoride product solutions.

Materials and methods

Twelve sets of 20 brackets and four tubes were ligated with three types of archwires: stainless steel, nickel-titanium, and beta-titanium. The samples in each archwire group were divided into three subgroups and immersed in solutions of fluoride toothpaste, 1.23% acidulated phosphate fluoride (APF), or artificial saliva without fluoride as a control group. The immersion times were estimated from the recommended time of using each fluoride product for 3 months. The samples were immersed in cell culture medium for 7 days. Primary gingival fibroblast cell viability was determined by an MTT assay. Metal ion (nickel, chromium, iron, and molybdenum) release and surface roughness were measured by inductively coupled plasma mass spectroscopy and a noncontact optical 3-dimensional surface characterization and roughness measuring device, respectively. The bracket and wire surface morphology was observed using scanning electron microscopy. The data were analysed by Two-way ANOVA.

Results

In the APF groups, the four metal ion levels and surface roughness of the brackets and archwires significantly increased, while cell viability significantly decreased, especially in the TMA subgroup. The SEM results showed that the brackets and wires in the APF groups demonstrated more lines and grooves compared with the other groups.

Conclusion

Using APF gel during orthodontic treatment with fixed metal appliances should be avoided.

查看原文本刊更多论文

含氟产品对金属正畸托架和弓线的腐蚀:细胞毒性、金属离子释放和表面粗糙度

目的研究金属正畸矫治器在不同氟产品溶液中浸泡后的细胞毒性、金属离子释放量和表面粗糙度。材料与方法采用不锈钢、镍钛、β钛三种不同类型的弓线进行结扎，共12组共20个托槽和4根管。每个弓丝组的标本分为3个亚组，分别浸泡在含氟牙膏、1.23%酸化磷酸氟(APF)溶液和不含氟的人工唾液溶液中作为对照组。浸泡时间是根据每种氟化物产品推荐使用时间3个月估算的。样品在细胞培养基中浸泡7天。MTT法测定原代牙龈成纤维细胞活力。金属离子(镍、铬、铁和钼)释放和表面粗糙度分别采用电感耦合等离子体质谱和非接触式光学三维表面表征和粗糙度测量装置进行测量。用扫描电镜观察支架和金属丝的表面形貌。数据采用双向方差分析。结果APF组支架和弓丝的四种金属离子水平和表面粗糙度均显著升高，细胞活力显著降低，其中以TMA亚组明显降低。扫描电镜结果显示，APF组的托槽和导线与其他组相比呈现出更多的线条和凹槽。结论在固定金属矫治器正畸治疗中应避免使用APF凝胶。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Orthodontic Waves DENTISTRY, ORAL SURGERY & MEDICINE-

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： Orthodontic Waves is the official publication of the Japanese Orthodontic Society. The aim of this journal is to foster the advancement of orthodontic research and practice. The journal seeks to publish original articles (i) definitive reports of wide interest to the orthodontic community, (ii) Case Reports and (iii) Short Communications. Research papers stand on the scientific basis of orthodontics. Clinical topics covered include all techniques and approaches to treatment planning. All submissions are subject to peer review.