Journal of Prosthodontics News   March 16, 2020

Comparing Digital and Conventional Full‐Arch Implant Impressions


Now online in the Journal of Prosthodontics, Drs. Konstantinos Chochlidakis, Panos Papaspyridakos, Alexandra Tsigarida, Davide Romeo, Yo-wei Chen, Zuhair Natto, and Carlo Ercoli report on their prospective clinical study that compared the accuracy of digital and conventional maxillary implant impressions for completely edentulous patients.

For this study, sixteen patients received maxillary implant supported fixed complete dentures and final casts were scanned with an extraoral scanner. Intraoral full-arch digital scans were also obtained and were superimposed and analyzed with reverse engineering software.

The findings of this study indicate a discrepancy between the digitized stone casts generated from conventional impressions and the virtual casts from intra-oral digital scans in the range of 162 μm. The 3D accuracy of full-arch digital implant scans lies within previously reported clinically acceptable threshold and the authors conclude that a potential complete digital workflow may be feasible in the edentulous maxilla.

Chochlidakis K, Papaspyridakos P, Tsigarida A, et al: Digital Versus Conventional Full‐Arch Implant Impressions: A Prospective Study on 16 Edentulous Maxillae. J Prosthodont. doi:10.1111/jopr.13162


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