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Proceedings Paper

Serial removal of caries lesions from tooth occlusal surfaces using near-IR image-guided IR laser ablation
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Paper Abstract

Previous studies have established that caries lesions can be imaged with high contrast without the interference of stains at near-IR wavelengths greater than 1300-nm. It has been demonstrated that computer controlled laser scanning systems utilizing IR lasers operating at high pulse repetition rates can be used for serial imaging and selective removal of caries lesions. In this study, we report our progress towards the development of algorithms for generating rasterized ablation maps from near-IR reflectance images for the removal of natural lesions from tooth occlusal surfaces. An InGaAs camera and a filtered tungsten-halogen lamp producing near-IR light in the range of 1500-1700-nm were used to collect crosspolarization reflectance images of tooth occlusal surfaces. A CO2 laser operating at a wavelength of 9.3- μm with a pulse duration of 10-15-μs was used for image-guided ablation.

Paper Details

Date Published: 24 February 2015
PDF: 6 pages
Proc. SPIE 9306, Lasers in Dentistry XXI, 93060G (24 February 2015); doi: 10.1117/12.2083651
Show Author Affiliations
Kenneth H. Chan, Univ. of California, San Francisco (United States)
Henry Tom, 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. 9306:
Lasers in Dentistry XXI
Peter Rechmann; Daniel Fried, Editor(s)

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