{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T14:33:36Z","timestamp":1790346816610,"version":"4.1.0"},"reference-count":22,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2020,8,17]],"date-time":"2020-08-17T00:00:00Z","timestamp":1597622400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100002911","name":"Universidad Complutense de Madrid","doi-asserted-by":"publisher","award":["DECO Department"],"award-info":[{"award-number":["DECO Department"]}],"id":[{"id":"10.13039\/501100002911","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JPM"],"abstract":"<jats:p>(1) Objectives: The aim is to measure the influence of different intraoral (crowding and molar inclination) and extraoral (surface material and ambient light) conditions on the efficacy and efficiency of intraoral scanning. (2) Methods: In a controlled in vitro experimental study, the samples were divided into six groups showing two types of intraoral conditions\u2014lower incisor crowding (groups 1\u20133) and lower molar mesial tipping (groups 4\u20136). Each modified model was replicated using three types of materials with different light-absorption properties (n = 18 models). Each sample was scanned 30 times at light intensities of 0.0, 1800, or 3600 l\u00d7, yielding 3240 scans. Scanning efficiency (digital acquisition; scanning chair-time; and scanning failures) and scanning efficacy (undetected volume) were assessed using virtual superimpositions and Mecano Equate software. The intra- and interobserver error and reliability of the method were calculated and data analyses were performed using the t-test, paired t-test, and one-way analysis of variance (p &lt; 0.05). (3) Results: Digital acquisition was influenced by the degree of crowding and molar inclination (p &lt; 0.05). The scanning surface material affected the efficacy and efficiency, which were lower with a calcium sulfate hemihydrate A modified compound scanning surface (p &lt; 0.05). Higher intensities of ambient light in the scanning room were associated with reduced scanning efficacy (p &lt; 0.05). Moreover, the scanner showed greater amounts of undetected volume as the degrees of crowding and mesial tipping of the lower second molar increased over 25\u00b0, with mean error values of 0.97 mm3 and 1.12 mm3, respectively. (4) Conclusions: For scanning procedures employing digital acquisition, differences in the degrees of crowding and mesial tipping of the lower second molar, scanning surface material, and external light source intensity influence the efficacy and efficiency of the scanning procedures, scanning chair-time, scanning failures, and undetected volume.<\/jats:p>","DOI":"10.3390\/jpm10030092","type":"journal-article","created":{"date-parts":[[2020,8,17]],"date-time":"2020-08-17T21:58:53Z","timestamp":1597701533000},"page":"92","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Personalized Dental Medicine: Impact of Intraoral and Extraoral Clinical Variables on the Precision and Efficiency of Intraoral Scanning"],"prefix":"10.3390","volume":"10","author":[{"given":"C\u00e9sar","family":"Mart\u00ednez-Rodr\u00edguez","sequence":"first","affiliation":[{"name":"Section of Post-Graduate Orthodontic, Faculty of Odontology, University Complutense of Madrid, 28001 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Junco-Plana","family":"Patricia","sequence":"additional","affiliation":[{"name":"Section of Post-Graduate Orthodontic, Faculty of Odontology, University Complutense of Madrid, 28001 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ortega-Aranegui","family":"Ricardo","sequence":"additional","affiliation":[{"name":"Head Radiological Department, School of Dentistry, University of Madrid, 28001 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9063-1612","authenticated-orcid":false,"given":"Iglesias-Linares","family":"Alejandro","sequence":"additional","affiliation":[{"name":"BIOCRAN (Craniofacial Biology) Research Group, Complutense University, 28001 Madrid, Spain"},{"name":"Full Professor of Orthodontics, Associate-Dean for Research, Complutense University of Madrid. Plaza Ram\u00f3n y Cajal sn, 28001 Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,8,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"877","DOI":"10.1016\/j.ajodo.2018.07.013","article-title":"CAD-CAM design and 3-dimensional printing of mini-implant retained orthodontic appliances","volume":"154","author":"Graf","year":"2018","journal-title":"Am. J. Orthod. Dentofac. Orthop."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"109","DOI":"10.1016\/j.jpor.2019.07.010","article-title":"Accuracy and practicality of intraoral scanner in dentistry: A literature review","volume":"64","author":"Kihara","year":"2019","journal-title":"J. Prosthodont. 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