{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T23:11:25Z","timestamp":1784157085032,"version":"3.55.0"},"reference-count":26,"publisher":"Wiley","license":[{"start":{"date-parts":[[2025,6,14]],"date-time":"2025-06-14T00:00:00Z","timestamp":1749859200000},"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":["Journal of Prosthodontics"],"abstract":"Abstract<\/jats:title>Purpose<\/jats:title>Intraoral scanning of an edentulous full arch with implants is subject to scanning errors. These errors may lead to a misfit of the final implant\u2010supported restoration if a verification procedure is not employed. The purpose of this in vitro study was to compare the passivity of fit of metal frameworks on full arch multi\u2010unit abutments (MUAs) fabricated using different intraoral impressions of full arch dental implants.<\/jats:p><\/jats:sec>Materials and Methods<\/jats:title>Maxillary and mandibular master casts were fabricated with Type IV gypsum with MUAs located 0.5\u00a0mm subgingivally. The maxillary cast consisted of two straight MUA anterior analogs and two distally angulated MUA posterior analogs. The mandibular cast consisted of six MUA straight analogs. Digital scans of the maxillary and mandibular master casts were completed by one operator with a Trios 4 intraoral scanner (3Shape). One set of scans was completed with scan gauges and the other with scan bodies. Screw\u2010retained metal bars were fabricated from each of the four scans. In addition, two bars were fabricated with intentional misfit to serve as a negative control. All bars were milled with the same bar design dimensions. Twelve evaluators were asked to evaluate the bars and to provide a yes or no answer to three questions related to bar fit on the casts. A Fisher's Exact test was used to analyze the data.<\/jats:p><\/jats:sec>Results<\/jats:title>Twelve evaluators completed a clinical assessment of each bar. In the maxilla, a significant number of prosthodontists considered the bar fabricated using the Nexus technology more accurate than the bar fabricated using conventional scan bodies (p<\/jats:italic>\u00a0<\u00a00.001). Ten out of twelve (83.33%, p<\/jats:italic>\u00a0<\u00a00.05) of evaluators reported that the maxillary Nexus bar passed the one screw test and had a clinically acceptable fit. Only 8.33% of evaluators felt that the bars fabricated from the conventional scan bodies had a passive fit and were clinically acceptable. In the mandible, a majority (75%, p<\/jats:italic>\u00a0<\u00a00.05) of evaluators responded that the Nexus bars had a clinically acceptable fit, whereas none of the conventional scan body bars did. Only 16.66% of evaluators determined the conventional scan body bars to have a passive fit, while 58.33% (p<\/jats:italic>\u00a0=\u00a00.089) determined that the Nexus bars did have a passive fit. All the evaluators deemed the bars fabricated with intentional misfit clinically unacceptable.<\/jats:p><\/jats:sec>Conclusion<\/jats:title>Over 75% of the evaluators reported that both the maxillary and mandibular bars fabricated utilizing the Nexus scan gauge system achieved a clinically acceptable result. Future studies are needed that expand on more objective findings.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.14079","type":"journal-article","created":{"date-parts":[[2025,6,14]],"date-time":"2025-06-14T08:19:56Z","timestamp":1749889196000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Passivity of complete arch implant\u2010supported fixed dental prostheses fabricated using a scan gauge system and conventional scan bodies: An in vitro study"],"prefix":"10.1111","author":[{"given":"Stacey","family":"Kerzhner","sequence":"first","affiliation":[{"name":"Advanced Education Program in Prosthodontics Dental Service, New York Harbor Healthcare System New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Huan\u2010Chun","family":"Lin","sequence":"additional","affiliation":[{"name":"Advanced Education Program in Prosthodontics Dental Service New York Harbor Healthcare System New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frank","family":"Tuminelli","sequence":"additional","affiliation":[{"name":"American Board of Prosthodontics New York USA"},{"name":"Graduate Prosthodontics New York VA Harbor Healthcare System New York USA"},{"name":"NYU Dental School New York USA"},{"name":"Hofstra Northwell School of Medicine Hempstead New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2025,6,14]]},"reference":[{"issue":"4","key":"e_1_2_8_2_1","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1177\/0022034517693566","article-title":"Global, regional, and national prevalence, incidence, and disability\u2010adjusted life years for oral conditions for 195 countries, 1990\u20132015: a systematic analysis for the Global Burden of Diseases, injuries, and risk factors","volume":"96","author":"Kassebaum NJ","year":"2017","journal-title":"J Dent Res"},{"issue":"4","key":"e_1_2_8_3_1","first-page":"791","article-title":"Patient satisfaction and oral health\u2010related quality of life outcomes of implant overdentures and fixed complete dentures","volume":"25","author":"Brennan M","year":"2010","journal-title":"Int J Oral Maxillofac Implants"},{"issue":"2","key":"e_1_2_8_4_1","doi-asserted-by":"crossref","first-page":"214","DOI":"10.1016\/j.prosdent.2016.06.005","article-title":"Ensuring passivity and retrievability for immediate complete\u2010arch implant\u2010supported prostheses","volume":"117","author":"Spazzin AO","year":"2017","journal-title":"J Prosthet Dent"},{"issue":"2","key":"e_1_2_8_5_1","doi-asserted-by":"crossref","first-page":"85","DOI":"10.1097\/00008505-200104000-00003","article-title":"The significance of passive framework fit in implant prosthodontics: current status","volume":"10","author":"Sahin S","year":"2001","journal-title":"Implant 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A","year":"2022","journal-title":"Materials"},{"issue":"4","key":"e_1_2_8_9_1","doi-asserted-by":"crossref","first-page":"325","DOI":"10.1111\/jopr.13536","article-title":"Digital vs conventional full\u2010arch implant impressions: a retrospective analysis of 36 edentulous jaws","volume":"32","author":"Papaspyridakos P","year":"2023","journal-title":"J Prosthodont"},{"issue":"5","key":"e_1_2_8_10_1","doi-asserted-by":"crossref","first-page":"452","DOI":"10.1111\/jopr.13664","article-title":"Reverse scan body: a complete digital workflow for prosthesis prototype fabrication","volume":"32","author":"Papaspyridakos P","year":"2023","journal-title":"J 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Part 1: operator factors","volume":"35","author":"Revilla\u2010Le\u00f3n M","year":"2023","journal-title":"J Esthet Restor Dent"},{"issue":"2","key":"e_1_2_8_15_1","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1111\/jopr.13749","article-title":"Intraoral digital implant scans: parameters to improve accuracy","volume":"32","author":"Revilla\u2010Le\u00f3n M","year":"2023","journal-title":"J Prosthodont"},{"issue":"2","key":"e_1_2_8_16_1","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1111\/cid.13187","article-title":"Effect of material type, torque value, and sterilization on linear displacements of a scan body: an in vitro study","volume":"25","author":"Diker E","year":"2023","journal-title":"Clin Implant Dent Relat Res"},{"issue":"2","key":"e_1_2_8_17_1","doi-asserted-by":"crossref","first-page":"208","DOI":"10.1111\/jopr.13751","article-title":"Accuracy, scanning time, and patient satisfaction of stereophotogrammetry systems for acquiring 3D dental implant 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and conventional impression techniques for complete\u2010arch implant rehabilitation: an in vitro comparative study","volume":"21","author":"Ma B","year":"2021","journal-title":"BMC Oral Health"},{"issue":"2","key":"e_1_2_8_21_1","first-page":"157","article-title":"Accuracy of full\u2010arch digital implant impressions taken using intraoral scanners and related variables: a systematic review","volume":"14","author":"Zhang YJ","year":"2021","journal-title":"Int J Oral Implantol"},{"issue":"1","key":"e_1_2_8_22_1","doi-asserted-by":"crossref","first-page":"115","DOI":"10.11607\/prd.6733","article-title":"A Paradigm shift using scan bodies to record the position of a complete arch of implants in a digital workflow","volume":"44","author":"Giglio GD","year":"2024","journal-title":"Int J Periodontics Restorative Dent"},{"issue":"6","key":"e_1_2_8_23_1","doi-asserted-by":"crossref","first-page":"543","DOI":"10.1016\/j.prosdent.2018.10.018","article-title":"Conventional open\u2010tray impression versus intraoral digital scan for implant\u2010level complete\u2010arch impression","volume":"122","author":"Kim KR","year":"2019","journal-title":"J Prosthet Dent"},{"issue":"7","key":"e_1_2_8_24_1","doi-asserted-by":"crossref","first-page":"2174","DOI":"10.3390\/jcm9072174","article-title":"Congruence between meshes and library files of implant scanbodies: an in vitro study comparing five intraoral scanners","volume":"9","author":"Mangano F","year":"2020","journal-title":"J Clin Med"},{"issue":"2","key":"e_1_2_8_25_1","doi-asserted-by":"crossref","first-page":"128","DOI":"10.1016\/j.jpor.2019.06.001","article-title":"Influence of implant scanbody material, position and operator on the accuracy of digital impression for complete\u2010arch: a randomized in vitro trial","volume":"64","author":"Arcuri L","year":"2020","journal-title":"J Prosthodont 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