Department of Restorative Dentistry and Endodontics, University Medical Centre Ljubljana, Ljubljana, Slovenia; Department of Endodontics and Operative Dentistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
Private Practice, Rome, Italy.
J Endod. 2021 May;47(5):721-731. doi: 10.1016/j.joen.2021.02.002. Epub 2021 Feb 13.
A comparison between root canal transportation studies is nearly impossible because of nonstandardized transportation evaluation methods. The aim of the present review was to search, compare, and critically discuss transportation evaluation methods.
A search of PubMed, Web of Science, Scopus, ScienceDirect, and reference lists of articles was conducted up to March 2020 using appropriate key words to identify transportation evaluation methods. The methods in the included articles were extracted, compared, and categorized.
Seventy-four articles using original methods were selected. All studies share 3 main steps: image acquisition, image measurements, and calculation of parameters. Images were acquired by photography, radiography, and computed tomographic imaging. Two types of measurements were used: the amount of removed material and the canal center point distance. The parameters were calculated and reported as distance or ratio. Relationships between the different transportation parameters were found and confirmed with mathematical simulation.
Although methods were proposed as being novel, similarities between them were found, enabling the classification of the methods and identifying correlations. The canal center point distance is the most suitable for the description of canal transportation because it is comprehensible and it relates to the mathematical concept of translation. Removed material-based measurements are double the value of the canal center point distance. Ratio parameters are not suitable for reporting transportation.
由于根管偏移评价方法未标准化，因此几乎不可能对根管偏移研究进行比较。本综述的目的是搜索、比较和批判性讨论根管偏移评价方法。
截至 2020 年 3 月，使用适当的关键词在 PubMed、Web of Science、Scopus、ScienceDirect 和文章参考文献中进行了搜索，以确定根管偏移评价方法。提取、比较和分类纳入文章中的方法。
共选择了 74 篇使用原始方法的文章。所有研究都有 3 个主要步骤：图像采集、图像测量和参数计算。图像通过摄影、射线照相和计算机断层成像获取。使用了两种类型的测量：去除材料的量和根管中心点距离。参数以距离或比值形式计算和报告。不同根管偏移参数之间的关系已被发现并通过数学模拟得到证实。
尽管提出的方法被认为是新颖的，但仍发现它们之间存在相似之处，从而能够对方法进行分类并确定相关性。根管中心点距离最适合描述根管偏移，因为它易于理解，并且与平移的数学概念相关。基于去除材料的测量值是根管中心点距离的两倍。比值参数不适合报告偏移。
