Ex-vivo evaluation of an early caries detector based on integrated OCT and polarized Raman spectroscopy (conference presentation)

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DOIResolve DOI: http://doi.org/10.1117/12.2253224
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Proceedings titleLasers in Dentistry XXIII
Series titleProceedings of SPIE; no. 10044
ConferenceSPIE BiOS,2017, Jan. 28-Feb. 2, 2017, San Francisco, CA, USA
ISSN0277-786X
1996-756X
ISBN9781510605299
1510605290
AbstractEarly detection of incipient caries would allow dentists to provide more effective measures to delay or to reverse caries’ progression at earlier stage. Such earlier intervention could lead to improved oral health for the patients and reduced burden to the health system. Previously, we have demonstrated that the combination of morphological and biochemical information furnished by optical coherence tomography (OCT) and polarized Raman spectroscopy (PRS), respectively, provided a unique tool for dental caries management. In this study we will report the first pre-clinical caries detection system that includes a hand-held probe with a size slightly larger than a tooth brush. This probe presents a novel platform combining both OCT and PRS optics in a very tight space ideal for clinical practice. OCT cross-sectional images of near-surface enamel morphology are obtained with miniaturized MEMS scanning device and are processed in real-time to identify culprit regions. These regions are sequentially analyzed with polarized Raman spectroscopy for further confirmation. PRS is performed using 830nm laser line and four detection channels in order to obtain polarized Raman spectroscopic data, i.e. depolarization ratio of the hydroxyapatite Raman band at ~960 cm-1. A detailed description of this hand-held caries detector and ex-vivo/in-vivo test results will be presented.
Publication date
PublisherSociety of Photo-Optical Instrumentation Engineers
LanguageEnglish
AffiliationEnergy, Mining and Environment; Medical Devices; National Research Council Canada
Peer reviewedYes
NPARC number23002206
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Record identifierd2f4e2c1-500f-4273-96b5-ecc07d55ba67
Record created2017-09-05
Record modified2017-09-13
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