Cross-sectional and en-face depolarization imaging for the assessment of dental lesions

Jonas Golde 1 , Florian Tetschke 2 , Julia Walther 2 , Tobias Rosenauer 3 , Franz Hempel 2 , Christian Hannig 3 , Edmund Koch 2  and Lars Kirsten 2
  • 1 TU Dresden, Faculty of Medicine Carl Gustav Carus, Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring, Fetscherstrasse 74, 01307, Dresden, Germany
  • 2 TU Dresden, Faculty of Medicine CGC, Anesthesiology and Intensive Care Medicine, Clinical Sensoring and Monitoring,, Dresden, Germany
  • 3 TU Dresden, Faculty of Medicine CGC, Policlinic of Operative and Pediatric Dentistry,, Dresden, Germany


Dental caries is one of the most widespread diseases and the early and non-invasive detection of carious lesions remains an ongoing topic in biomedical research. In contrast, optical coherence tomography (OCT) is an emerging, non-invasive imaging technique for near-surface structures, that has already proved its capability for manifold biomedical applications and can be extended by several modalities such as polarization sensitivity. We have recently shown that polarization sensitive OCT combined with an algorithm for depolarization imaging, visualizing the degree of polarization uniformity (DOPU), is a promising tool for the detection and assessment of carious lesions. In this paper, we evaluate different visualization approaches based on both the intensity and DOPU data with cross-sectional and en-face representations and discuss limitations and the potential of the proposed method for the assessment of dental lesions on the example of a molar tooth with a brown spot.

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Current Directions in Biomedical Engineering is an open access journal and closely related to the journal Biomedical Engineering - Biomedizinische Technik. CDBME is a forum for the exchange of knowledge in the fields of biomedical engineering, medical information technology and biotechnology/bioengineering for medicine and addresses engineers, natural scientists, and clinicians working in research, industry, or clinical practice.