Quantification of white spot lesions around orthodontic brackets with image analysis.
Publication year
2008Source
Angle Orthodontist, 78, 4, (2008), pp. 585-90ISSN
Publication type
Article / Letter to editor

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Organization
Dentistry
Preventative Restorative Dentistry
Journal title
Angle Orthodontist
Volume
vol. 78
Issue
iss. 4
Page start
p. 585
Page end
p. 90
Subject
EBP 2: Effective Hospital Care; EBP 3: Effective Primary Care and Public Health; NCEBP 2: Evaluation of complex medical interventionsAbstract
OBJECTIVE: To investigate the use of image analysis for diagnosis and quantification of artificial white spot lesions on digital photographs before and after removal of orthodontic brackets. MATERIALS AND METHODS: Enamel demineralization was artificially induced on the labial surface of 20 teeth bonded with orthodontic brackets. Standardized digital photographs were taken at angles of 90 degrees and 110 degrees to the labial surface, before and after bracket removal. All images were analyzed by two observers using image-processing software, and the area of the white spot lesion was calculated. Reproducibility was assessed by the Pearson correlation coefficient for interobserver reliability and by the paired t-test for differences between observers. Differences between the known and the measured demineralization area were tested using the t-test. Differences between both stages and angles were assessed by application of the paired t-test. RESULTS: Reproducibility was very good for all measurements. For the photographs taken at an angle of 110 degrees , there was a statistically significant but clinically irrelevant difference between the observers. The difference between the surface measured and the true surface was dependent on the stages and angles but was always <1 mm2. CONCLUSION: Image analysis is a reproducible and reliable method for quantification of artificial enamel demineralization around orthodontic brackets.
This item appears in the following Collection(s)
- Academic publications [227613]
- Electronic publications [107286]
- Faculty of Medical Sciences [86193]
- Open Access publications [76413]
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