{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T17:45:23Z","timestamp":1793036723507,"version":"4.5.0"},"reference-count":31,"publisher":"Georg Thieme Verlag KG","issue":"01","license":[{"start":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T00:00:00Z","timestamp":1693267200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur J Dent"],"published-print":{"date-parts":[[2024,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Objective\u2003The aim of this study was to evaluate the effect of adjacent teeth patterns on the accuracy of digital scans of parallel and divergent implants for three-unit prostheses.<\/jats:p><jats:p>\n          Materials and Methods\u2003A maxillary typodont model with implants in the locations of the first premolars and first molars was used to develop three clinical scenarios for three-unit prostheses: (S1) Partially edentulous arch with missing first premolars and first molars only; (S2) partially edentulous arch with missing first premolars, second premolars and first molars; and (S3) partially edentulous arch with missing canines, first premolars, second premolars, first molars, and second molars. On one side, the implants were parallel, and for the other side, the implants had a 15-degree buccolingual angle. With the aid of scan bodies, 10 digital impressions were taken for each scenario and for each side. To evaluate the accuracy, a reverse engineering software was used to measure trueness, precision, and interimplant distance.<\/jats:p><jats:p>\n          Results\u2003The best trueness for parallel implants was observed for S2 (30.0\u2009\u00b5m), followed by S3 (67.3\u2009\u00b5m) and S1 (74.8\u2009\u00b5m) (p\u2009&lt;\u20090.001). Likewise, S2 had the best precision for parallel implants (31.3\u2009\u00b5m) followed by S3 (38.0\u2009\u00b5m) and S1 (70.3\u2009\u00b5m) (p\u2009&lt;\u20090.001). For the divergent implants, S2 exhibited the best trueness (23.1\u2009\u00b5m), followed by S3 (48.2\u2009\u00b5m) and S1 (59.4\u2009\u00b5m) (p\u2009=\u20090.007). Similarly, the S2 had the best precision (12.3\u2009\u00b5m) followed by S3 (62.1\u2009\u00b5m) and S1 (66.9\u2009\u00b5m) (p\u2009&lt;\u20090.001). The S2 had the least interimplant distance deviation followed by S1 and S3. The difference was significant for parallel implants (p\u2009=\u20090.03), but insignificant for divergent implants (p\u2009=\u20090.15).<\/jats:p><jats:p>\n          Conclusion\u2003Regardless of the presenting scenario, digital implant impressions for three-unit prostheses appear to be clinically accurate. A clear interimplant area between scan bodies enhanced the accuracy of digital impressions. This observation can be attributed to more accessible axial surface scanning of the scan body.<\/jats:p>","DOI":"10.1055\/s-0043-1771031","type":"journal-article","created":{"date-parts":[[2023,8,30]],"date-time":"2023-08-30T00:04:57Z","timestamp":1693353897000},"page":"349-355","source":"Crossref","is-referenced-by-count":5,"title":["Influence of Implant Adjacent Teeth on the Accuracy of Digital Impression"],"prefix":"10.1055","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3392-8641","authenticated-orcid":false,"given":"Jaafar","family":"Abduo","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Melbourne Dental School, Melbourne University, Melbourne, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1497-3212","authenticated-orcid":false,"given":"Hossam","family":"El-Haddad","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics, Melbourne Dental School, Melbourne University, Melbourne, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"194","published-online":{"date-parts":[[2023,8,29]]},"reference":[{"issue":"01","key":"ref1","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1186\/s40729-021-00355-6","article-title":"Accuracy of digital impressions versus conventional impressions for 2 implants: an in vitro study evaluating the effect of implant angulation","volume":"7","author":"J Abduo","year":"2021","journal-title":"Int J Implant Dent"},{"issue":"01","key":"ref2","doi-asserted-by":"crossref","first-page":"39","DOI":"10.11607\/jomi.9172","article-title":"In vitro comparison of the accuracy of conventional impression and four intraoral scanners in four different implant impression scenarios","volume":"37","author":"D S Alpk\u0131l\u0131\u00e7","year":"2022","journal-title":"Int J Oral Maxillofac Implants"},{"issue":"04","key":"ref3","doi-asserted-by":"crossref","first-page":"236","DOI":"10.4047\/jap.2022.14.4.236","article-title":"Comparison of accuracy between digital and conventional implant impressions: two and three dimensional evaluations","volume":"14","author":"C Bi","year":"2022","journal-title":"J Adv Prosthodont"},{"issue":"02","key":"ref4","doi-asserted-by":"crossref","first-page":"313","DOI":"10.11607\/jomi.5087","article-title":"In vitro three-dimensional accuracy of digital implant impressions: the effect of implant angulation","volume":"32","author":"V A Chia","year":"2017","journal-title":"Int J Oral Maxillofac Implants"},{"issue":"08","key":"ref6","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1111\/jopr.12457","article-title":"An in vitro study of factors influencing the performance of digital intraoral impressions operating on active wavefront sampling technology with multiple implants in the edentulous maxilla","volume":"26","author":"B 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