不同类型扫描仪获取的 3D 图像准确性比较：系统评价。
Comparison of the Accuracy of 3D Images Obtained fromDifferent Types of Scanners: A Systematic Review.
机构信息
Division of Facial Abnormalities, Department of Maxillofacial Orthopedics and Orthodontics, Wroclaw Medical University, Wroclaw, Poland.
Faculty of Dentistry, Wroclaw Medical University, Wroclaw, Poland.
出版信息
J Healthc Eng. 2020 Dec 14;2020:8854204. doi: 10.1155/2020/8854204. eCollection 2020.
INTRODUCTION
The purpose of this systematic review was to compare the accuracy of the three-dimensional images among different scanners, scanning techniques, and substrates. . Electronic databases (PubMed and Elsevier) were searched until March 2020. The systematic search was performed to identify the most precise method of obtaining a 3D image of the dentition.
RESULTS
Thirteen articles out of 221, considering the accuracy of 3D images, were selected. The main factors that are considered to have an influence on the precision are substrate type in the oral cavity, experience of the scanner's operator, direct vs. indirect scanning, and the reproducibility of the procedure.
CONCLUSION
Substrate type does have an impact on the overall accuracy of intraoral scans where dentin has the most and enamel the least accurately recorded dental structure. Experience of the operator has an influence on the accuracy, where more experienced operators and smaller scan sizes are made for more accurate scans. A conventional impression technique in a full-arch image provided the lowest deviation. The reproducibility of direct scanning was comparable to indirect scanning although a slight difference was noticeable (0.02 mm).
简介
本系统评价的目的是比较不同扫描仪、扫描技术和基底的三维图像的准确性。电子数据库（PubMed 和 Elsevier）搜索至 2020 年 3 月。系统搜索旨在确定获得牙齿三维图像的最精确方法。
结果
在考虑 3D 图像准确性的情况下，从 221 篇文章中选择了 13 篇。被认为对精度有影响的主要因素是口腔内的基底类型、扫描仪操作员的经验、直接扫描与间接扫描以及程序的可重复性。
结论
基底类型确实会影响口腔内扫描的整体准确性，其中牙本质记录的牙齿结构最不准确，而牙釉质最准确。操作员的经验会影响准确性，经验丰富的操作员和较小的扫描尺寸会进行更精确的扫描。全牙弓图像中的常规印模技术提供的偏差最小。直接扫描的可重复性与间接扫描相当，尽管有细微差别（0.02 毫米）。
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