24 February 2015 Serial removal of caries lesions from tooth occlusal surfaces using near-IR image-guided IR laser ablation
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Proceedings Volume 9306, Lasers in Dentistry XXI; 93060G (2015) https://doi.org/10.1117/12.2083651
Event: SPIE BiOS, 2015, San Francisco, California, United States
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.
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Kenneth H. Chan, Kenneth H. Chan, Henry Tom, Henry Tom, Cynthia L. Darling, Cynthia L. Darling, Daniel Fried, Daniel Fried, } "Serial removal of caries lesions from tooth occlusal surfaces using near-IR image-guided IR laser ablation", Proc. SPIE 9306, Lasers in Dentistry XXI, 93060G (24 February 2015); doi: 10.1117/12.2083651; https://doi.org/10.1117/12.2083651
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