{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T21:44:00Z","timestamp":1768513440751,"version":"3.49.0"},"reference-count":27,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2023,7,29]],"date-time":"2023-07-29T00:00:00Z","timestamp":1690588800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Applied Sciences"],"abstract":"<jats:p>The aim of this in vitro study was to evaluate the accuracy of impressions made using two different silicones and corresponding stone casts in full-arch implant rehabilitation, using two laboratory scanners. A master model with six dental implants was created, scanned with a 12-megapixel scanner and used as digital master model. Ten implant impressions were obtained via two silicone impressions systems\u2014Coltene\u00ae and Zhermack\u00ae\u2014using the open-tray technique and poured gypsum. Two extraoral scanning systems (S600 ARTI Zirkonzhan\u00ae and Identica T500 Medit\u00ae) were used to scan the impressions and stone casts. Best-fit superimpositions were conducted between the master model and the virtual models obtained. A significance level of p &lt; 0.05 was considered. The accuracy of the Medit\u00ae scanner was 82.26 [53.18; 111.34] \u00b5m for Coltene\u00ae silicone and 87.43 [72.00; 102.86] \u00b5m for Zhermack\u00ae silicone, and the accuracy of the Zirkonzhan\u00ae scanner was 69.90 [62.37; 77.43] \u00b5m for Coltene\u00ae silicone and 80.67 [65.77; 95.57] \u00b5m for Zhermack\u00ae silicone, without significant differences between scanners. When comparing the two silicones, no significant differences were found for the Medit\u00ae (p = 0.112) or Zirkonzhan\u00ae scanners (p = 0.162). The Zhermack\u00ae scanner showed better accuracy than the corresponding stone casts in the two scanners, Medit\u00ae (p = 0.019) and Zirkonzahn\u00ae (p = 0.002). The extraoral digitalization of impressions in edentulous dental arches with six implants proves to be a valid technique.<\/jats:p>","DOI":"10.3390\/app13158769","type":"journal-article","created":{"date-parts":[[2023,7,31]],"date-time":"2023-07-31T03:30:02Z","timestamp":1690774202000},"page":"8769","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Accuracy of Extraoral Digital Impressions with Multi-Unit Implants"],"prefix":"10.3390","volume":"13","author":[{"given":"Manuel Ant\u00f3nio","family":"Sampaio-Fernandes","sequence":"first","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, 4200-393 Oporto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9710-5444","authenticated-orcid":false,"given":"Ricardo","family":"Pinto","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade de Lisboa, 1649-003 Lisbon, Portugal"}]},{"given":"Paulo Rocha","family":"Almeida","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, 4200-393 Oporto, Portugal"}]},{"given":"Maria Margarida","family":"Sampaio-Fernandes","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, 4200-393 Oporto, Portugal"},{"name":"INEGI, Universidade do Porto, 4200-465 Oporto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1966-8281","authenticated-orcid":false,"given":"Duarte","family":"Marques","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade de Lisboa, 1649-003 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8583-8096","authenticated-orcid":false,"given":"Maria Helena","family":"Figueiral","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, 4200-393 Oporto, Portugal"},{"name":"INEGI, Universidade do Porto, 4200-465 Oporto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"783948","DOI":"10.1155\/2014\/783948","article-title":"Trends in computer-aided manufacturing in prosthodontics: A review of the available streams","volume":"2014","author":"Abduo","year":"2014","journal-title":"Int. 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