Savoldi Fabio, Papoutsi Aggeliki, Dianiskova Simona, Dalessandri Domenico, Bonetti Stefano, Tsoi James K H, Matinlinna Jukka P, Paganelli Corrado
Department of Orthodontics, Dental School, University of Brescia, Brescia, Italy.
Dental Materials Science, Faculty of Dentistry, The University of Hong Kong, Hong Kong.
Korean J Orthod. 2018 Jul;48(4):268-280. doi: 10.4041/kjod.2018.48.4.268. Epub 2018 Jul 6.
Resistance to sliding (RS) between the bracket, wire, and ligature has been largely debated in orthodontics. Despite the extensive number of published studies, the lack of discussion of the methods used has led to little understanding of this phenomenon. The aim of this study was to discuss variables affecting RS in orthodontics and to suggest an operative protocol. The search included PubMed©, Medline©, and the Cochrane Library©. References of full-text articles were manually analyzed. English-language articles published between January 2007 and January 2017 that performed an analysis of RS between the bracket, wire, and ligature were included. Study methods were analyzed based on the study design, description of materials, and experimental setup, and a protocol to standardize the testing methods was proposed. From 404 articles identified from the database search and 242 records selected from published references, 101 were eligible for the qualitative analysis, and six for the quantitative synthesis. One or more experimental parameters were incompatible and a meta-analysis was not performed. Major factors regarding the study design, materials, and experimental setup were not clearly described by most studies. The normal force, that is the force perpendicular to the sliding of the wire and one of the most relevant variable in RS, was not considered by most studies. Different variables were introduced, often acting as confounding factors. A protocol was suggested to standardize testing procedures and enhance the understanding of findings.
正畸治疗中，托槽、弓丝和结扎丝之间的抗滑动性（RS）一直存在很大争议。尽管已发表的研究数量众多，但对所使用方法缺乏讨论，导致人们对这一现象了解甚少。本研究的目的是探讨正畸治疗中影响抗滑动性的变量，并提出一个操作方案。检索范围包括PubMed©、Medline©和Cochrane图书馆©。对全文文章的参考文献进行了人工分析。纳入了2007年1月至2017年1月期间发表的对托槽、弓丝和结扎丝之间的抗滑动性进行分析的英文文章。基于研究设计、材料描述和实验设置对研究方法进行了分析，并提出了标准化测试方法的方案。从数据库搜索中识别出的404篇文章和从已发表参考文献中选出的242条记录中，101篇符合定性分析要求，6篇符合定量综合分析要求。由于一个或多个实验参数不兼容，未进行荟萃分析。大多数研究没有清楚描述关于研究设计、材料和实验设置的主要因素。大多数研究没有考虑法向力，即垂直于弓丝滑动的力，这是抗滑动性中最相关的变量之一。引入了不同的变量，这些变量常常起到混杂因素的作用。建议采用一个方案来标准化测试程序，并增进对研究结果的理解。
