A dual handheld SWIR transillumination/reflectance probe for imaging lesions on tooth occlusal and proximal surfaces

Yihua Zhu; Nai-Yuan Chang; William A. Fried; Vincent Yang; Daniel Fried

doi:10.1117/12.2550984

19 February 2020 A dual handheld SWIR transillumination/reflectance probe for imaging lesions on tooth occlusal and proximal surfaces

Yihua Zhu, Nai-Yuan Chang, William A. Fried, Vincent Yang, Daniel Fried

Author Affiliations +

Proceedings Volume 11217, Lasers in Dentistry XXVI; 112170J (2020) https://doi.org/10.1117/12.2550984
Event: SPIE BiOS, 2020, San Francisco, California, United States

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.

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Yihua Zhu, Nai-Yuan Chang, William A. Fried, Vincent Yang, and Daniel Fried "A dual handheld SWIR transillumination/reflectance probe for imaging lesions on tooth occlusal and proximal surfaces", Proc. SPIE 11217, Lasers in Dentistry XXVI, 112170J (19 February 2020); https://doi.org/10.1117/12.2550984

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