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 ORCID: 0000-0002-3812-8793, Jones, Clare, Lath, Darren L, Coxon, Thomas, Hibbard, James et al (show 1 more authors) (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, 36 Sup. S15-S20.

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Abstract

<h4>Objective</h4>To assess the reproducibility of a mobile non-contact camera-based digital imaging system (DIS) for measuring tooth colour under in vitro and in vivo conditions.<h4>Methods</h4>One in vitro and two in vivo studies were performed using a mobile non-contact camera-based digital imaging system. In vitro study: two operators used the DIS to image 10 dry tooth specimens in a randomised order on three occasions. In vivo study 1:25 subjects with two natural, normally aligned, upper central incisors had their teeth imaged using the DIS on four consecutive days by one operator to measure day-to-day variability. On one of the four test days, duplicate images were collected by three different operators to measure inter- and intra-operator variability. In vivo study 2:11 subjects with two natural, normally aligned, 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.<h4>Results</h4>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.<h4>Conclusion</h4>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, Cuspid, Incisor, Humans, Observer Variation, Photography, Dental, Colorimetry, Reproducibility of Results, Equipment Design, Color, Time Factors, Image Processing, Computer-Assisted, Adolescent, Adult, Aged, Middle Aged, Female, Male
Subjects: ?? RK ??
Divisions: Faculty of Health and Life Sciences > Institute of Life Courses and Medical Sciences > School of Dentistry
Depositing User: Symplectic Admin
Date Deposited: 24 Oct 2008 08:54
Last Modified: 16 Mar 2024 13:25
DOI: 10.1016/j.jdent.2008.02.002
Publisher's Statement : Copyright © 2008 Elsevier B.V.
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/926
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