Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials, Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Beijing, P.R. China.
Center of Digital Dentistry, Second Clinical Division, Peking University School and Hospital of Stomatology, National Center of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Research Center of Oral Biomaterials, Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology, Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, Beijing, P.R. China.
J Evid Based Dent Pract. 2024 Mar;24(1):101933. doi: 10.1016/j.jebdp.2023.101933. Epub 2023 Oct 18.
Accuracy is a crucial factor when assessing the quality of digital impressions. This systematic review aims to assess the accuracy of intraoral scan (IOS) in obtaining digital impressions of edentulous jaws.
This systematic review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) and was registered in the International Prospective Register of Systematic Reviews (PROSPERO ID: CRD42022382983). A thorough retrieval of 7 electronic databases was undertaken, encompassing MEDLINE (PubMed), Web of Science, EMBASE, Scopus, Cochrane Library, Virtual Health Library, and Open gray, through September 11, 2023. A snowball search was performed by tracing the reference lists of the included studies. The Population, Intervention, Comparison, and Outcome (PICO) question of this systematic review was: "What is the accuracy of intraoral scan in obtaining digital impressions of edentulous arches?" The Modified Methodological Index for Nonrandomized Studies (MINORS) was employed to assess the risk of bias.
Among the studies retrieved from databases and manual search, a total of 25 studies were selected for inclusion in this systematic review, including 9 in vivo and 16 in vitro studies. Twenty-one of the included studies utilized the 3D deviation analysis method, while 4 studies employed the linear or angular deviation analysis method. The accuracy results of in vitro studies indicated a trueness range of 20-600 μm and a precision range of 2-700 μm. Results of in vivo studies indicated a trueness range of 40-1380 μm, while the precision results were not reported.
According to the results of this study, direct digital impressions by IOS cannot replace the conventional impressions of completely edentulous arches in vivo. Edentulous digital impressions by IOS demonstrated poor accuracy in peripheral areas with mobile tissues, such as the soft palate, vestibular sulcus, and sublingual area.
当评估数字印模的质量时,准确性是一个关键因素。本系统评价旨在评估口内扫描(IOS)获取无牙颌数字印模的准确性。
本系统评价遵循系统评价和荟萃分析的首选报告项目(PRISMA),并在国际前瞻性系统评价注册库(PROSPERO ID:CRD42022382983)中进行了注册。通过 2023 年 9 月 11 日对 7 个电子数据库(MEDLINE(PubMed)、Web of Science、EMBASE、Scopus、Cochrane 图书馆、虚拟健康图书馆和 Open gray)进行了彻底检索,并通过追踪纳入研究的参考文献进行了滚雪球搜索。本系统评价的人群、干预、比较和结局(PICO)问题是:“口内扫描获取无牙弓数字印模的准确性如何?”采用改良的非随机研究方法学指数(MINORS)评估偏倚风险。
从数据库和手动搜索中检索到的研究中,共有 25 项研究被纳入本系统评价,其中包括 9 项体内研究和 16 项体外研究。21 项纳入研究采用三维偏差分析方法,4 项研究采用线性或角偏差分析方法。体外研究的准确性结果表明,真实度范围为 20-600μm,精密度范围为 2-700μm。体内研究的结果表明,真实度范围为 40-1380μm,而精密度结果未报告。
根据本研究结果,IOS 直接数字印模不能替代体内完全无牙弓的传统印模。IOS 获得的无牙数字化印模在具有移动组织的周边区域(如软腭、前庭沟和舌下区域)的准确性较差。