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Full-arch accuracy of five intraoral scanners: In vivo analysis of trueness and precision

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Abstract
Objective: To evaluate the trueness and precision of full-arch scans acquired using five intraoral scanners and investigate the factors associated with the dimensional accuracy of the intraoral scan data. Methods: Nine adult participants (mean age, 34.3 +/- 8.3 years) were recruited. Four zirconium spheres ((sic) 6 mm) were bonded to the canines and the molars. Following acquisition of reference scans using an industrial-grade scanner, five intraoral scanners, namely i500, CS3600, Trios 3, iTero, and CEREC Omnicam, were used to scan the arches. Linear distances between the four reference spheres were automatically calculated, and linear mixed model analysis was performed to compare the trueness and precision of the intraoral scan data among the different scanners. Results: The absolute mean trueness and precision values for all intraoral scanners were 76.6 +/- 79.3 and 56.6 +/- 52.4 mu m, respectively. The type of scanner and the measured linear distances had significant effects on the accuracy of the intraoral scan data. With regard to trueness, errors in the intermolar dimension and the distance from the canine to the contralateral molar were greater with Omnicam than with the other scanners. With regard to precision, the error in the linear distance from the canine to the molar in the same quadrant was greater with Omnicam and CS3600 than with the other scanners. Conclusions: The dimensional accuracy of intraoral scan data may differ significantly according to the type of scanner, with the amount of error in terms of trueness being clinically significant.
Author(s)
권미란조영목김동욱김명수김윤지장민호
Issued Date
2021
Type
Article
Keyword
Digital impressionIntraoral scannerPrecisionTrueness
DOI
10.4041/kjod.2021.51.2.95
URI
https://oak.ulsan.ac.kr/handle/2021.oak/8727
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_kisti_ndsl_JAKO202109835825986&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Full-arch%20accuracy%20of%20five%20intraoral%20scanners:%20In%20vivo%20analysis%20of%20trueness%20and%20precision&offset=0&pcAvailability=true
Publisher
KOREAN JOURNAL OF ORTHODONTICS
Location
대한민국
Language
영어
ISSN
2234-7518
Citation Volume
51
Citation Number
2
Citation Start Page
95
Citation End Page
104
Appears in Collections:
Medicine > Medicine
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