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Proceedings Paper

A dual handheld SWIR transillumination/reflectance probe for imaging lesions on tooth occlusal and proximal surfaces
Author(s): Yihua Zhu; Nai-Yuan Chang; William A. Fried; Vincent Yang; Daniel Fried
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Paper Abstract

We developed a clinical probe capable of acquiring simultaneous short wavelength infrared (SWIR) reflectance and occlusal transillumination images of lesions on tooth proximal and occlusal surfaces to reduce the potential of false positives. The dual probe is 3D-printed and the imaging system uses a Ge-enhanced camera and fiber-optic light sources that use SWIR light at 1300-nm for occlusal transillumination and SWIR 1450-nm light for reflectance measurements. The purpose of this study was to test the performance of the probe on extracted teeth prior to commencing clinical studies. The dual probe was used to image extracted teeth with proximal and occlusal lesions. SWIR images of each tooth were compared with micro-CT images to assess performance.

Paper Details

Date Published: 19 February 2020
PDF: 7 pages
Proc. SPIE 11217, Lasers in Dentistry XXVI, 112170J (19 February 2020);
Show Author Affiliations
Yihua Zhu, Univ. of California, San Francisco (United States)
Nai-Yuan Chang, Univ. of California, San Francisco (United States)
William A. Fried, Univ. of California, San Francisco (United States)
Vincent Yang, Univ. of California, San Francisco (United States)
Daniel Fried, Univ. of California, San Francisco (United States)


Published in SPIE Proceedings Vol. 11217:
Lasers in Dentistry XXVI
Peter Rechmann; Daniel Fried, Editor(s)

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