在体外将弹性结扎线暴露于聚维酮碘 1%、洗必泰 0.02%和过氧化氢 5%的环境下，对其拉伸强度进行比较。
In vitro comparison of the tensile strength of elastomeric ligatures exposed to Povidone Iodine 1%, Chlorhexidine 0.02%, and hydrogen peroxide 5.
机构信息
Aja university of Medical Sciences, Dental School, Department of Orthodontics, Tehran, Iran.
Aja university of Medical Sciences, Tehran, Iran.
出版信息
Int Orthod. 2021 Dec;19(4):685-688. doi: 10.1016/j.ortho.2021.09.009. Epub 2021 Oct 20.
OBJECTIVE
In orthodontic patients using any chemical substances in oral environment could change the elastomeric properties of their appliances. Since the beginning of the SARS-CoV-2 pandemic, efforts have been devoted to explore methods of prevention including the use of antiviral mouthwashes. This study aimed to investigate the effects of Povidone Iodine (PVP-I) and two other disinfecting solutions on the mechanical properties of orthodontic elastomeric ligatures.
MATERIALS AND METHODS
In this study, 130 elastomeric ligatures in five groups (three test groups and two control groups) were examined in laboratory conditions for a period of 28 days. In the control group, specimens were kept dry in a dark environment while all other ligatures were stored in artificial saliva. Elastomeric ligatures were immersed into PVP-I solution (1%) Chlorhexidine (0.02%), and hydrogen peroxide (5%) for one minute each day in three time intervals of one day, 7 days and 28 days. Next, the maximum tensile strength of elastomeric ligatures was tested by a universal testing machine (CN 1174, Germany).
RESULTS
The results showed that the tensile strength of elastomeric ligatures was significantly decreased in all three test groups after 28 days (p-value<0.05). However, the difference between groups was not statistically significant. Between-subject ANOVA test showed that there were significant correlations between the time of exposure and type of disinfecting solutions.
CONCLUSIONS
PVP-I has comparable effects on elastomeric ligatures as artificial saliva, chlorhexidine, and hydrogen peroxide.
目的
在口腔环境中使用任何化学物质的正畸患者，其矫治器的弹性特性可能会发生变化。自 SARS-CoV-2 大流行开始以来，人们一直致力于探索预防方法，包括使用抗病毒漱口水。本研究旨在研究聚维酮碘（PVP-I）和另外两种消毒剂对正畸弹性结扎线机械性能的影响。
材料和方法
在这项研究中，在实验室条件下检查了五个组（三个实验组和两个对照组）的 130 个弹性结扎线，为期 28 天。在对照组中，将标本保存在黑暗环境中干燥，而所有其他结扎线均储存在人工唾液中。将弹性结扎线分别浸入 PVP-I 溶液（1%）、洗必泰（0.02%）和过氧化氢（5%）中，每天一分钟，分三个时间段，每天一次、七天一次和二十八天一次。然后，通过万能试验机（CN 1174，德国）测试弹性结扎线的最大拉伸强度。
结果
结果表明，所有三个实验组的弹性结扎线在 28 天后的拉伸强度均显著降低（p 值<0.05）。然而，组间差异无统计学意义。组间方差分析表明，暴露时间与消毒剂类型之间存在显著相关性。
结论
PVP-I 对弹性结扎线的影响与人工唾液、洗必泰和过氧化氢相当。
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