Accuracy, reliability, and efficiency of intraoral scanners for full-arch impressions: a systematic review of the clinical evidence

The interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely to verify whether the several scanners proposed for full-arch digital impressions have been tested under clinical conditions for validity, repeatability...

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Published in:	European journal of orthodontics Vol. 38; no. 4; pp. 422 - 428
Main Authors:	Goracci, Cecilia, Franchi, Lorenzo, Vichi, Alessandro, Ferrari, Marco
Format:	Journal Article
Language:	English
Published:	England 01.08.2016
Subjects:	Dental Arch - diagnostic imaging Dental Impression Technique - instrumentation Dental Occlusion Dentition Evidence-Based Medicine - methods Humans Models, Dental Patient Acceptance of Health Care Reproducibility of Results
ISSN:	1460-2210
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Abstract	The interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely to verify whether the several scanners proposed for full-arch digital impressions have been tested under clinical conditions for validity, repeatability, reproducibility, as well as for time efficiency, and patient acceptance. An electronic search of the literature was conducted through PubMed, Scopus, Cochrane Library, Web of Science, and Embase, entering the query terms 'digital impression', 'intraoral digital impression', 'intraoral scanning', 'intraoral scanner', 'intraoral digital scanner', combined by the Boolean operator 'OR'. No language or time limitation was applied. Only studies where digital full-arch impressions had been recorded intraorally were considered. In only eight studies full-arch scans had been performed intraorally. Only four studies reported data on validity, repeatability, reproducibility of digital measurements and their samples were limited to subjects in complete permanent dentition. Only two intraoral scanners, Lava COS and iTero, were tested. Scanning times were measured in six studies and varied largely. Patients' acceptance of intraoral scanning was evaluated in four studies, but it was not specifically assessed for children. The scientific evidence so far collected on intraoral scanning is neither exhaustive, nor up-to-date. Data from full-arch scans performed in children should be collected. For a meaningful assessment of time efficiency, agreement should be reached on the procedural steps to be included in the computation of scanning time.
AbstractList	OBJECTIVESThe interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely to verify whether the several scanners proposed for full-arch digital impressions have been tested under clinical conditions for validity, repeatability, reproducibility, as well as for time efficiency, and patient acceptance.SEARCH METHODSAn electronic search of the literature was conducted through PubMed, Scopus, Cochrane Library, Web of Science, and Embase, entering the query terms 'digital impression', 'intraoral digital impression', 'intraoral scanning', 'intraoral scanner', 'intraoral digital scanner', combined by the Boolean operator 'OR'. No language or time limitation was applied.SELECTION CRITERIAOnly studies where digital full-arch impressions had been recorded intraorally were considered.RESULTSIn only eight studies full-arch scans had been performed intraorally. Only four studies reported data on validity, repeatability, reproducibility of digital measurements and their samples were limited to subjects in complete permanent dentition. Only two intraoral scanners, Lava COS and iTero, were tested. Scanning times were measured in six studies and varied largely. Patients' acceptance of intraoral scanning was evaluated in four studies, but it was not specifically assessed for children.CONCLUSIONSThe scientific evidence so far collected on intraoral scanning is neither exhaustive, nor up-to-date. Data from full-arch scans performed in children should be collected. For a meaningful assessment of time efficiency, agreement should be reached on the procedural steps to be included in the computation of scanning time. The interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely to verify whether the several scanners proposed for full-arch digital impressions have been tested under clinical conditions for validity, repeatability, reproducibility, as well as for time efficiency, and patient acceptance. An electronic search of the literature was conducted through PubMed, Scopus, Cochrane Library, Web of Science, and Embase, entering the query terms 'digital impression', 'intraoral digital impression', 'intraoral scanning', 'intraoral scanner', 'intraoral digital scanner', combined by the Boolean operator 'OR'. No language or time limitation was applied. Only studies where digital full-arch impressions had been recorded intraorally were considered. In only eight studies full-arch scans had been performed intraorally. Only four studies reported data on validity, repeatability, reproducibility of digital measurements and their samples were limited to subjects in complete permanent dentition. Only two intraoral scanners, Lava COS and iTero, were tested. Scanning times were measured in six studies and varied largely. Patients' acceptance of intraoral scanning was evaluated in four studies, but it was not specifically assessed for children. The scientific evidence so far collected on intraoral scanning is neither exhaustive, nor up-to-date. Data from full-arch scans performed in children should be collected. For a meaningful assessment of time efficiency, agreement should be reached on the procedural steps to be included in the computation of scanning time.
Author	Goracci, Cecilia Vichi, Alessandro Franchi, Lorenzo Ferrari, Marco
Author_xml	– sequence: 1 givenname: Cecilia surname: Goracci fullname: Goracci, Cecilia email: cecilia.goracci@gmail.com organization: Department of Medical Biotechnologies, University of Siena, Italy and cecilia.goracci@gmail.com – sequence: 2 givenname: Lorenzo surname: Franchi fullname: Franchi, Lorenzo organization: Department of Surgery and Translational Medicine, Università degli Studi di Firenze, Italy – sequence: 3 givenname: Alessandro surname: Vichi fullname: Vichi, Alessandro organization: Department of Medical Biotechnologies, University of Siena, Italy and – sequence: 4 givenname: Marco surname: Ferrari fullname: Ferrari, Marco organization: Department of Medical Biotechnologies, University of Siena, Italy and
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Copyright	The Author 2015. Published by Oxford University Press on behalf of the European Orthodontic Society. All rights reserved. For permissions, please email: journals.permissions@oup.com.
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Snippet	The interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely to verify... OBJECTIVESThe interest on intraoral scanners for digital impressions has been growing and new devices are continuously introduced on the market. It is timely...
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SubjectTerms	Dental Arch - diagnostic imaging Dental Impression Technique - instrumentation Dental Occlusion Dentition Evidence-Based Medicine - methods Humans Models, Dental Patient Acceptance of Health Care Reproducibility of Results
Title	Accuracy, reliability, and efficiency of intraoral scanners for full-arch impressions: a systematic review of the clinical evidence
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