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The in vitro and in vivo validation of a mobile non-contact camera-based digital imaging system for tooth colour measurement

Smith, Richard N.; Collins, Luisa Z.; Naeeni, Mojgan; Joiner, Andrew; Philpotts, Carole J.; Hopkinson, Ian; Jones, Clare; Lath, Darren L.; Coxon, Thomas; Hibbard, James and Brook, Alan H. (2008) The in vitro and in vivo validation of a mobile non-contact camera-based digital imaging system for tooth colour measurement. Journal of Dentistry, 36S . S15-S20. ISSN 0300-5712

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Cited 6 times in WoS

Abstract

Objective: To assess the reproducibility of a mobile non-contact camera-based digital imaging system for measuring tooth colour under in vitro and in vivo conditions. Methods: One in vitro and two in vivo studies were performed using a mobile non-contact camera-based digital imaging system (DIS). In vitro study: Two operators used the DIS to image ten dry tooth specimens in a randomised order on three occasions. In vivo study 1: Twenty-five subjects with two natural, straight, upper central incisors had their teeth imaged using the DIS on 4 consecutive days by one operator to measure day-to-day variability. On one of the 4 test days, duplicate images were collected by three different operators to measure inter and intra-operator variability. In vivo study 2: Eleven subjects with two natural, straight, upper central incisors had their teeth imaged using the DIS twice daily over three days within the same week to assess day-to-day variability. Three operators collected images from subjects in a randomised order to measure inter and intra-operator variability. Results: Subject-to-subject variability was the largest source of variation within the data. Pairwise correlations and concordance coefficients were >0.7 for each operator, demonstrating good precision and excellent operator agreement in each of the studies. Intraclass correlation coefficients (ICCs) for each operator indicate that day-to-day reliability was good to excellent, where all ICC’s where >0.75 for each operator. Conclusions: The mobile non-contact camera-based digital imaging system was shown to be a reproducible means of measuring tooth colour in both in vitro and in vivo experiments.

Item Type:Article
Additional Information:Available online 3 April 2008.
Uncontrolled Keywords:tooth whiteness; reproducibility; variability; standardisation
Subjects:R Medicine > RK Dentistry
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Medicine > School of Dental Sciences
DOI:10.1016/j.jdent.2008.02.002
Publisher's Statement:Copyright © 2008 Elsevier B.V.
Refereed:Yes
Status:Published
ID Code:926
Deposited On:24 Oct 2008 09:54
Last Modified:18 Apr 2012 11:57

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