In Vitro Three-Dimensional Accuracy of Digital Implant Impressions: The Effect of Implant Angulation

Abstract

This assignment applies to all translations of the Work as well as to preliminary display/posting of the abstract of the accepted article in electronic form before publication. If any changes in authorship (order, deletions, or additions) occur after the manuscript is submitted, agreement by all authors for such changes must be on file with the Publisher. An author's name may be removed only at his/her written request. (Note: Material prepared by employees of the US government in the course of their official duties cannot be copyrighted.

Accuracy of printed casts generated from digital implant impressions versus stone casts from conventional implant impressions: A comparative in vitro study

“…The propagation and accumulation of error in digital workflow from scanning to milling of a partially edentulous arch with single implant scenario has been shown (Koch et al, ). The STL file accuracy is comparable to or even superior to the conventional approach, and this finding has also been reported in several studies with Kennedy class II scenarios (Chew et al, ; Chia et al, ; Marghalani et al, ). The present study takes one step further and reports the outcomes when the actual STL files are used to print physical casts.…”

“…A systematic review found that digital impressions resulted in better marginal and internal fit than conventional for tooth-supported single crowns and FDPs (Chochlidakis et al, 2016). Regarding implant-supported prostheses, there are less available data currently, but there is a constant increase of published data on the accuracy of digital impressions with IOS systems, and the results seem promising for both partially and fully edentulous arches (Amin et al, 2017;Basaki, Alkumru, Souza, & Finer, 2017;Chew et al, 2017;Chia et al, 2017;Lee, Betensky, Gianneschi, & Gallucci, 2015;Marghalani et al, 2018;Papaspyridakos et al, 2016;Papaspyridakos, Rajput, Kudara, & Weber, 2017;Vandeweghe, Vervack, Dierens, & Bruyn, 2017).…”

The effect of scanning the palate and scan body position on the accuracy of complete‐arch implant scans

“…Digital workflows play an important role in implant dentistry through acquiring implant positions and displaying them in a virtual model . Scan bodies have been developed to take digital implant scans by creating an accessible surface for optical acquisition and are readily detectable and can be matched with the corresponding digital implant library by the software . Geometrical features on the scan bodies supply information about the implant orientation, angulation, and 3D spatial position within the dental arch .…”

“…Scan bodies have been developed to take digital implant scans by creating an accessible surface for optical acquisition and are readily detectable and can be matched with the corresponding digital implant library by the software . Geometrical features on the scan bodies supply information about the implant orientation, angulation, and 3D spatial position within the dental arch . Digital implant scans can be performed directly following a digital workflow using intraoral scan bodies (ISBs) attached to the implants and an intraoral scanner (IOS) to capture the topography of the ISBs and the surrounding oral structures .…”

“…Digital implant scanning techniques using direct digital workflow have been popular in recent years parallel with the development of various intraoral scanners (IOSs) and their reported advantages . Nevertheless, the accuracy of intraoral digital implant scan is affected by several factors; the IOS system, software program associated with the digital scan system, different scan bodies, experience of the operator, angulation and position of the implant(s), and quadrant . In the literature, few studies have investigated the accuracy of ISBs that represents the 3D spatial position of implants …”