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Journal of Biomedical Optics • Open Access

Effects of enamel abrasion, salivary pellicle, and measurement angle on the optical assessment of dental erosion
Author(s): Adrian Lussi; Anke Bossen; Christoph Hoschele; Barbara Beyeler; Brigitte Megert; Christoph Meier; Ekaterina Rakhmatullina

Paper Abstract

The present study assessed the effects of abrasion, salivary proteins, and measurement angle on the quantification of early dental erosion by the analysis of reflection intensities from enamel. Enamel from 184 caries-free human molars was used for in vitro erosion in citric acid (pH 3.6). Abrasion of the eroded enamel resulted in a 6% to 14% increase in the specular reflection intensity compared to only eroded enamel, and the reflection increase depended on the erosion degree. Nevertheless, monitoring of early erosion by reflection analysis was possible even in the abraded eroded teeth. The presence of the salivary pellicle induced up to 22% higher reflection intensities due to the smoothing of the eroded enamel by the adhered proteins. However, this measurement artifact could be significantly minimized (p<0.05 ) by removing the pellicle layer with 3% NaOCl solution. Change of the measurement angles from 45 to 60 deg did not improve the sensitivity of the analysis at late erosion stages. The applicability of the method for monitoring the remineralization of eroded enamel remained unclear in a demineralization/remineralization cycling model of early dental erosion in vitro.

Paper Details

Date Published: 28 September 2012
PDF: 13 pages
J. Biomed. Opt. 17(9) 097009 doi: 10.1117/1.JBO.17.9.097009
Published in: Journal of Biomedical Optics Volume 17, Issue 9
Show Author Affiliations
Adrian Lussi, Bern Univ. Hospital (Switzerland)
Anke Bossen, Berner Fachhochschule Technik und Informatik (Switzerland)
Christoph Hoschele, Berner Fachhochschule Technik und Informatik (Switzerland)
Barbara Beyeler, Bern Univ. Hospital (Switzerland)
Brigitte Megert, Bern Univ. Hospital (Switzerland)
Christoph Meier, Berner Fachhochschule Technik und Informatik (Switzerland)
Ekaterina Rakhmatullina, Bern Univ. Hospital (Switzerland)


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