Effect of Chlorhexidine and Povidone-iodine Mouth Rinses on Corrosion Resistance and Surface Characteristics of Stainless Steel Orthodontic Brackets - An in vitro and in vivo Study.
Ragul Pugalendhi, N K Sapna Varma, Parvathy Ghosh, V V Ajith, Deepika Jayakrishnan Nair
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引用次数: 0
Abstract
Background: Stainless steel (SS) orthodontic brackets may have varying corrosion resistance when used with mouthwashes during orthodontic treatment. Studying their effects on orthodontic brackets will be beneficial.
Aim: The study's objective was to analyze the surface characteristics of SS orthodontic brackets and their resistance to corrosion, exposed to chlorhexidine and povidone-iodine mouth rinses - an in vitro and in vivo study.
Materials and methods: The in vitro test: MBT 0.022" slot SS orthodontic brackets were immersed in three groups - Group A - Modified Meyer-Fusayama artificial saliva (AS), Group B - Chlorhexidine, and Group C - Povidone-iodine mouthwash. The in vivo test: Brackets were conventionally bonded on the patient's teeth and divided into Group I - control group, Group II - patients used chlorhexidine, and Group III used povidone-iodine mouth rinse. The corrosion resistance and surface characteristics of SS brackets were determined using scanning electron microscope (SEM), electrochemical impedance spectroscopy, and X-ray photoelectron spectroscopy.
Results: Higher corrosion resistance was obtained for brackets immersed in chlorhexidine mouth rinse. The polarization resistance value of the orthodontic SS bracket was 109 MΩ, 1383 MΩ, and 769 MΩ immersed in AS, chlorhexidine, and povidone-iodine mouth rinse, respectively. After surface chemical analysis, XPS data showed the largest intensity peak of metallic chromium (CrO) fresh sample and in the sample immersed in chlorhexidine mouthwash. According to SEM, brackets immersed in chlorhexidine showed a relatively smooth surface.
Conclusion: In this study, chlorhexidine was found to be less corrosive followed by povidone-iodine.
背景：不锈钢（SS）正畸托槽在正畸治疗期间与漱口水一起使用时可能会产生不同的抗腐蚀性。研究它们对正畸托槽的影响将是有益的。目的：本研究的目的是分析暴露在洗必泰和聚维酮碘漱口水中的 SS 正畸托槽的表面特征及其抗腐蚀性--这是一项体外和体内研究：体外测试：将 MBT 0.022 英寸槽 SS 正畸托槽分别浸入三组--A 组--改良迈耶-富山人工唾液（AS），B 组--洗必泰，C 组--聚维酮碘漱口水。体内测试：托槽按常规粘结在患者的牙齿上，分为 I 组（对照组）、II 组（患者使用洗必泰）和 III 组（使用聚维酮碘漱口水）。使用扫描电子显微镜（SEM）、电化学阻抗谱和 X 射线光电子能谱测定 SS 托槽的抗腐蚀性和表面特征：结果：浸泡在洗必泰漱口水中的支架具有更高的耐腐蚀性。浸泡在 AS、洗必泰和聚维酮碘漱口水中的正畸 SS 托槽的极化电阻值分别为 109 MΩ、1383 MΩ和 769 MΩ。经过表面化学分析，XPS 数据显示新鲜样品和浸泡在洗必泰漱口水中的样品中金属铬（CrO）的峰值强度最大。扫描电镜显示，浸泡在洗必泰漱口水中的托架表面相对光滑：本研究发现，洗必泰的腐蚀性较低，其次是聚维酮碘。
期刊介绍：
The journal Contemporary Clinical Dentistry (CCD) (Print ISSN: 0976-237X, E-ISSN:0976- 2361) is peer-reviewed journal published on behalf of Maharishi Markandeshwar University and issues are published quarterly in the last week of March, June, September and December. The Journal publishes Original research papers, clinical studies, case series strictly of clinical interest. Manuscripts are invited from all specialties of Dentistry i.e. Conservative dentistry and Endodontics, Dentofacial orthopedics and Orthodontics, Oral medicine and Radiology, Oral pathology, Oral surgery, Orodental diseases, Pediatric Dentistry, Periodontics, Clinical aspects of Public Health dentistry and Prosthodontics. Review articles are not accepted. Review, if published, will only be by invitation from eminent scholars and academicians of National and International repute in the field of Medical/Dental education.
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