PhD student, Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
MSc student, Department of Dentistry, Federal University of Rio Grande do Norte (UFRN), Natal, RN, Brazil.
J Prosthet Dent. 2023 Jun;129(6):855-862. doi: 10.1016/j.prosdent.2021.09.001. Epub 2021 Oct 13.
The direct digitalization of completely edentulous arches rehabilitated with multiple implants still represents a limitation regarding obtaining accurate images for prosthetic purposes.
The purpose of this systematic review was to present the factors that may influence the accuracy of intraoral scanning of completely edentulous arches.
This review was carried out according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) criteria and registered with International Prospective Register of Systematic Reviews (PROSPERO) (CRD42020171021). Three examiners performed an electronic search in the Medline/PubMed, Cochrane Library, Scopus, and Web of Science databases for articles published up to January 2021.
The electronic search resulted in 11 498 studies. After removing duplicates, 11 347 studies remained. Twelve studies were selected (10 in vitro and 2 in vivo) according to the eligibility criteria. Several factors were found to influence the performance of intraoral scanners (Carestream Dental and TRIOS, 3Shape presented the best results), the intraoral scanning technique (Promoting physical paths that join the digitization bodies can increase the accuracy of transferring the position of the implants), environmental conditions (temperature: 20 °C to 21 °C, air pressure: 750 to 760 ±5 mmHg, air humidity: 45%, angle and distance between the implants: up to 15 degrees and 16 to 22 mm, and the material of the scan body: PEEK more accurate).
The accuracy of the intraoral scanning of completely edentulous arches is affected by factors such as the type of intraoral scanner, scanning technique, environmental conditions, angle and distance between implants, and material of the scan bodies.
完全无牙颌经多个种植体修复后的直接数字化仍然是获得用于修复目的的准确图像的一个限制因素。
本系统评价的目的是介绍可能影响完全无牙颌口内扫描准确性的因素。
本研究按照系统评价和荟萃分析的首选报告项目（PRISMA）标准进行，并在国际前瞻性系统评价注册库（PROSPERO）（CRD42020171021）进行了注册。三名检查人员在 Medline/PubMed、Cochrane 图书馆、Scopus 和 Web of Science 数据库中进行了电子检索，检索截至 2021 年 1 月发表的文章。
电子检索共产生了 11498 篇研究。去除重复项后，仍有 11347 篇研究。根据纳入标准，选择了 12 项研究（10 项为体外研究，2 项为体内研究）。研究发现，许多因素会影响口内扫描仪的性能（Carestream Dental 和 TRIOS，3Shape 的表现最佳）、口内扫描技术（促进连接数字化体的物理路径可以提高将种植体位置转移的准确性）、环境条件（温度：20°C 至 21°C，气压：750 至 760±5mmHg，空气湿度：45%，种植体之间的角度和距离：不超过 15 度和 16 至 22 毫米，扫描体的材料：PEEK 更准确）。
完全无牙颌口内扫描的准确性受口内扫描仪的类型、扫描技术、环境条件、种植体之间的角度和距离以及扫描体的材料等因素的影响。
