{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:11:40Z","timestamp":1760145100161,"version":"build-2065373602"},"reference-count":25,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2024,6,15]],"date-time":"2024-06-15T00:00:00Z","timestamp":1718409600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the trueness of impressions obtained with two types of silicone and their corresponding stone casts, using two laboratory scanners in a full-arch implant rehabilitation. A master cast with six dental implants was scanned with a 12-megapixel scanner to obtain a digital master cast. Ten implant impressions were made using two silicones (Zhermack and Coltene) with the open-tray technique. The impressions and stone casts were scanned by two extraoral scanners (Identica T500, Medit; and S600 ARTI, Zirkonzhan). Trueness was assessed by comparing linear and angular distances in digital casts with the master cast. A p &lt; 0.05 significance level was considered. The results showed that for the linear measurements, 72% were higher than the master cast measurements, and no consistent pattern was observed in the angular measurements. The greatest deviations were detected between the most posterior implants, with mean values ranging between 173 and 314 \u00b5m. No significant differences were found between scanners. However, differences were observed in the distances between silicones (46.7%) and between impressions and stone casts (73.3%). This work demonstrates that the direct scanning of silicone impressions yields results comparable to those obtained from scanning gypsum casts in full-arch implant-supported rehabilitation.<\/jats:p>","DOI":"10.3390\/ma17122932","type":"journal-article","created":{"date-parts":[[2024,6,17]],"date-time":"2024-06-17T06:29:43Z","timestamp":1718605783000},"page":"2932","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Trueness of Extraoral Digital Impressions for Full-Arch Implant Impressions\u2014In Vitro Study"],"prefix":"10.3390","volume":"17","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, 1600-277 Lisbon, Portugal"}]},{"given":"Paulo Rocha","family":"Almeida","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria, Universidade do Porto, 4200-393 Oporto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9814-041X","authenticated-orcid":false,"given":"Maria Margarida","family":"Sampaio-Fernandes","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina Dent\u00e1ria and INEGI researcher, Universidade do Porto, 4200-393 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, 1600-277 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 and INEGI researcher, Universidade do Porto, 4200-393 Oporto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"359","DOI":"10.1111\/jerd.12481","article-title":"Soft tissue replication in single unit implant impressions\u2014A three dimensional clinical study","volume":"31","author":"Pinto","year":"2019","journal-title":"J. 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Materials, 15.","DOI":"10.3390\/ma15062103"}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/17\/12\/2932\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:59:11Z","timestamp":1760108351000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/17\/12\/2932"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,6,15]]},"references-count":25,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2024,6]]}},"alternative-id":["ma17122932"],"URL":"https:\/\/doi.org\/10.3390\/ma17122932","relation":{},"ISSN":["1996-1944"],"issn-type":[{"type":"electronic","value":"1996-1944"}],"subject":[],"published":{"date-parts":[[2024,6,15]]}}}