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Proceedings Paper

Transillumination and reflectance probes for in vivo near-IR imaging of dental caries
Author(s): Jacob C. Simon; Seth A. Lucas; Michal Staninec; Henry Tom; Kenneth H. Chan; Cynthia L. Darling; Daniel Fried
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Paper Abstract

Previous studies have demonstrated the utility of near infrared (NIR) imaging for caries detection employing transillumination and reflectance imaging geometries. Three intra-oral NIR imaging probes were fabricated for the acquisition of in vivo, real time videos using a high definition InGaAs SWIR camera and near-IR broadband light sources. Two transillumination probes provide occlusal and interproximal images using 1300-nm light where water absorption is low and enamel manifests the highest transparency. A third reflectance probe utilizes cross polarization and operates at >1500-nm, where water absorption is higher which reduces the reflectivity of sound tissues, significantly increasing lesion contrast. These probes are being used in an ongoing clinical study to assess the diagnostic performance of NIR imaging for the detection of caries lesions in teeth scheduled for extraction for orthodontic reasons.

Paper Details

Date Published: 18 February 2014
PDF: 7 pages
Proc. SPIE 8929, Lasers in Dentistry XX, 89290D (18 February 2014); doi: 10.1117/12.2045630
Show Author Affiliations
Jacob C. Simon, Univ. of California, San Francisco (United States)
Seth A. Lucas, Univ. of California, San Francisco (United States)
Michal Staninec, Univ. of California, San Francisco (United States)
Henry Tom, Univ. of California, San Francisco (United States)
Kenneth H. Chan, Univ. of California, San Francisco (United States)
Cynthia L. Darling, Univ. of California, San Francisco (United States)
Daniel Fried, Univ. of California, San Francisco (United States)


Published in SPIE Proceedings Vol. 8929:
Lasers in Dentistry XX
Peter Rechmann; Daniel Fried, Editor(s)

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