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26 January 2018 Detection of carious lesions utilizing depolarization imaging by polarization sensitive optical coherence tomography
Jonas Golde, Florian Tetschke, Julia Walther, Tobias Rosenauer D.D.S., Franz Hempel, Christian Hannig D.D.S., Edmund Koch, Lars Kirsten
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Journal of Biomedical Optics, Vol. 23, Issue 7, 071203 (January 2018). https://doi.org/10.1117/1.JBO.23.7.071203
Abstract
As dental caries is one of the most common diseases, the early and noninvasive detection of carious lesions plays an important role in public health care. Optical coherence tomography (OCT) with its ability of depth-resolved, high-resolution, noninvasive, fast imaging has been previously recognized as a promising tool in dentistry. Additionally, polarization sensitive imaging provides quantitative measures on the birefringent tissue properties and can be utilized for imaging dental tissue, especially enamel and dentin. By imaging three exemplary tooth samples ex vivo with proximal white spot, brown spot, and cavity, we show that the combination of polarization sensitive OCT and the degree of polarization uniformity (DOPU) algorithm is a promising approach for the detection of proximal carious lesions due to the depolarization contrast of demineralized tissue. Furthermore, we investigate different sizes of the DOPU evaluation kernel on the resulting contrast and conclude a suitable value for this application. We propose that DOPU provides an easy to interpret image representation and appropriate contrast for possible future screening applications in early caries diagnostics.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Jonas Golde, Florian Tetschke, Julia Walther, Tobias Rosenauer D.D.S., Franz Hempel, Christian Hannig D.D.S., Edmund Koch, and Lars Kirsten "Detection of carious lesions utilizing depolarization imaging by polarization sensitive optical coherence tomography," Journal of Biomedical Optics 23(7), 071203 (26 January 2018). https://doi.org/10.1117/1.JBO.23.7.071203
Received: 1 October 2017; Accepted: 23 December 2017; Published: 26 January 2018
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Cited by 31 scholarly publications.
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KEYWORDS
Polarization
Optical coherence tomography
Teeth
Dental caries
Reflectivity
Tissues
Medicine
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