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Proceedings Paper

A SWIR imaging handpiece for the clinical assessment of lesion activity via dehydration: preclinical assessment
Author(s): William A. Fried; Yihua Zhu; Vincent Yang; Nai-Yuan Chang; Daniel Fried
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Paper Abstract

New imaging methods are needed to assess the activity of caries lesions on tooth surfaces. Recent studies have shown that changes in the contrast of lesions during dehydration with air at SWIR wavelengths can be used to determine if lesions are active or arrested. In this study changes in the reflectance of caries lesions during dehydration with air was monitored at 1500-1750-nm on extracted teeth using an imaging system with an InGaAs camera, a light source and a 3D printed handpiece with an integrated air nozzle suitable for clinical use. Lesion structure was also assessed with optical coherence tomography and microCT for comparison. This small preclinical study demonstrated that a 3D printed appliance with integrated air for dehydration can be used to acquire SWIR dehydration curves similar to those acquired previously for benchtop imaging systems.

Paper Details

Date Published: 19 February 2020
PDF: 4 pages
Proc. SPIE 11217, Lasers in Dentistry XXVI, 112170I (19 February 2020);
Show Author Affiliations
William A. Fried, Univ. of California, San Francisco (United States)
Yihua Zhu, Univ. of California, San Francisco (United States)
Vincent Yang, Univ. of California, San Francisco (United States)
Nai-Yuan Chang, 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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