Faculté d'Odontologie, Université Lyon 1, Université de Lyon, Lyon, France.
Service de Consultations et Traitements Dentaires, Hospices Civils de Lyon, Lyon, France.
J Healthc Eng. 2017;2017:8427595. doi: 10.1155/2017/8427595. Epub 2017 Sep 5.
To overcome difficulties associated with conventional techniques, impressions with IOS (intraoral scanner) and CAD/CAM (computer-aided design and manufacturing) technologies were developed for dental practice. The last decade has seen an increasing number of optical IOS devices, and these are based on different technologies; the choice of which may impact on clinical use. To allow informed choice before purchasing or renewing an IOS, this article summarizes first the technologies currently used (light projection, distance object determination, and reconstruction). In the second section, the clinical considerations of each strategy such as handling, learning curve, powdering, scanning paths, tracking, and mesh quality are discussed. The last section is dedicated to the accuracy of files and of the intermaxillary relationship registered with IOS as the rendering of files in the graphical user interface is often misleading. This overview leads to the conclusion that the current IOS is adapted for a common practice, although differences exist between the technologies employed. An important aspect highlighted in this review is the reduction in the volume of hardware which has led to an increase in the importance of software-based technologies.
为了克服传统技术相关的困难，口腔内扫描仪（IOS）和计算机辅助设计与制造（CAD/CAM）技术的印模被应用于牙科实践。过去十年中，光学 IOS 设备的数量不断增加，这些设备基于不同的技术；而选择哪种技术可能会影响临床应用。为了在购买或更新 IOS 之前能够做出明智的选择，本文首先总结了目前使用的技术（光投影、距离物体确定和重建）。在第二部分，讨论了每种策略的临床注意事项，如处理、学习曲线、粉末化、扫描路径、跟踪和网格质量。最后一部分专门讨论了 IOS 中文件和颌间关系的准确性，因为文件在图形用户界面中的呈现常常具有误导性。该综述的结论是，目前的 IOS 适应于常见的临床实践，尽管所采用的技术之间存在差异。在本次综述中强调的一个重要方面是硬件体积的减少，这导致基于软件的技术的重要性增加。
