{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T20:43:29Z","timestamp":1789764209886,"version":"4.0.1"},"reference-count":36,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2024,5,10]],"date-time":"2024-05-10T00:00:00Z","timestamp":1715299200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clin Implant Dent Rel Res"],"published-print":{"date-parts":[[2024,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objectives<\/jats:title><jats:p>This study aimed to compare the accuracy of implant\u2010level conventional and digital impressions for atrophied maxillary ridges.<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and Methods<\/jats:title><jats:p>Twelve participants with atrophied edentulous maxillary ridges received six implants. Six months later and after soft tissue maturation around healing abutments, a control cast was constructed using the final passive restoration for each patient. Two types of implant\u2010level impression techniques were carried out for each patient: (1) conventional (splinted open\u2010tray) impression technique and (2) digital impression technique. For both techniques, scan bodies were labeled from the most distal implant on the left side (A, B, C, D, E, and F) and scanning was made. Accuracy of both techniques was measured using in vitro (two\u2010dimensional and three\u2010dimensional) and in vivo (clinical) methods. Two\u2010dimensional methods include measurement of the difference in linear distances AB, AC AD, AE, and AF. Geomagic software was used to assess the three\u2010dimensional deviation between the two impression techniques using the superimposition of standard tessellation language files. The incidence and percentage of nonpassive frameworks and framework misfits of final restorations for both types of impression techniques were assessed using the single screw test.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>For all distances, digital impressions recorded significantly higher deviation from control measurements than conventional impressions. The highest two\u2010dimensional linear deviation was noted for AF distance and the lowest difference was noted for AB distance. For all scan bodies, digital impressions recorded significantly higher three\u2010dimensional deviation than conventional impressions. The highest three\u2010dimensional deviation was noted with scan bodies C and D. Digital impressions recorded a significantly higher incidence of nonpassive frameworks and framework misfits than conventional impressions. [Correction added on 11 June 2024, after first online publication: In the preceding sentence, \u201cdigital impressions\u201d was changed to \u201cconventional impressions\u201d in this version.]<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Within the limitations of this study, it could be concluded that the conventional implant\u2010level impression technique showed greater in vitro and in vivo accuracy than the digital impression technique when used for full\u2010arch maxillary fixed restorations on inclined implants.<\/jats:p><\/jats:sec>","DOI":"10.1111\/cid.13336","type":"journal-article","created":{"date-parts":[[2024,5,10]],"date-time":"2024-05-10T11:25:19Z","timestamp":1715340319000},"page":"714-723","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Accuracy of digital and conventional implant\u2010level impression techniques for maxillary full\u2010arch screw\u2010retained prosthesis: A crossover randomized trial"],"prefix":"10.1111","volume":"26","author":[{"given":"Ammar Ghanim","family":"Jasim","sequence":"first","affiliation":[{"name":"Department of Prosthodontics Iraqi Ministry of Health  Baghdad Iraq"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mona Galal","family":"Abo Elezz","sequence":"additional","affiliation":[{"name":"Prosthodontics MTI University  Cairo Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2367-2438","authenticated-orcid":false,"given":"Gilan Y.","family":"Altonbary","sequence":"additional","affiliation":[{"name":"Department of Removable Prosthodontics, Faculty of Dentistry Mansoura University  Mansoura Egypt"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Moustafa Abdou","family":"Elsyad","sequence":"additional","affiliation":[{"name":"Department of Removable Prosthodontics, Faculty of Dentistry Mansoura University  Mansoura 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