Floriani Franciele, Lopes Guilherme Carpena, Cabrera Alexandre, Duarte Wagner, Zoidis Panagiotis, Oliveira Dayane, Rocha Mateus Garcia
Department of Periodontology, University of Florida College of Dentistry, Gainesville, Florida, United States.
Universidade Federal de Santa Catarina, Florianópolis, SC, Brazil.
Eur J Dent. 2023 Oct;17(4):964-973. doi: 10.1055/s-0042-1758798. Epub 2023 Jan 30.
This article compares the accuracy of intraoral scanners (IOSs) used in the digital impression of full arches to fabricate implant-supported complete prostheses. This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and was registered in the Open Science Framework (DOI 10.17605/OSF.IO/CPM9K). Six electronic databases, gray literature databases, and a manual search were performed in April 2022. Studies that evaluated the accuracy of intraoral scan impressions compared with conventional impressions in full-arch impressions were included for complete implant-supported prostheses. In addition, an adapted checklist for reporting in vitro studies was used to assess the risk of bias. Meta-analysis was conducted using a random-effects Hunter- Schmidt model. Nine studies were included in the analysis. IOS impressions present higher accuracy (137.86 μm) than conventional impressions (182.51 μm) (<0.001). The heterogeneity of the study's methodology was I2¼18.34. However, impression accuracy varies significantly with scan body type, IOS type, scanning strategy, and modification technique. For most IOS systems, the acceptable clinical threshold of linear accuracy of 200 μm can be achieved, except for the True Definition Scanner in one of the studies. Based on the results of the included studies, digital impressions using IOS present similar or better linear accuracy than conventional impression techniques.
本文比较了用于全牙弓数字化印模以制作种植体支持的全口义齿的口内扫描仪（IOS）的准确性。本研究遵循系统评价和Meta分析的首选报告项目指南，并已在开放科学框架（DOI 10.17605/OSF.IO/CPM9K）中注册。2022年4月进行了六个电子数据库、灰色文献数据库和手动检索。纳入了评估全牙弓印模中口内扫描印模与传统印模相比准确性的研究，用于制作完整的种植体支持义齿。此外，使用了一份改编的体外研究报告清单来评估偏倚风险。采用随机效应Hunter-Schmidt模型进行Meta分析。分析纳入了九项研究。IOS印模的准确性（137.86μm）高于传统印模（182.51μm）（<0.001）。该研究方法的异质性为I2¼18.34。然而，印模准确性会因扫描体类型、IOS类型、扫描策略和修改技术而有显著差异。对于大多数IOS系统，除了其中一项研究中的True Definition Scanner外，均可达到200μm线性准确性的可接受临床阈值。基于纳入研究的结果，使用IOS的数字印模在线性准确性方面与传统印模技术相似或更好。
