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Proceedings Paper

Near-IR imaging of interproximal lesions from occlusal surfaces and the influence of stains and plaque
Author(s): Daniel Fried; Christopher M. Bühler; Patara Ngaotheppitak; Cynthia L. Darling
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Paper Abstract

Dental enamel manifests high transparency in the near-IR (NIR). Our previous work demonstrated that NIR light at 1310-nm is ideally suited for the transillumination of interproximal dental caries (dental decay in between teeth) and that it can also be used to image decay in the pits and fissures of the occlusal (biting) surfaces of posterior teeth where most new dental decay occurs. Early occlusal lesions cannot be detected by x-rays during the early stages of lesion development due to the overlapping topography of the crown of the tooth. Stains and non-calcified plaque are not visible in the NIR enabling better discrimination of demineralized areas. We also demonstrate that interproximal lesions can be imaged from the occlusal surface (from above). Moreover, multiple illumination and detector angles can be exploited for optimal contrast between caries and sound tissue. These measurements suggest that NIR imaging offers significant advantages over the conventional visual, tactile and radiographic caries detection methods and other optical caries detection and imaging techniques.

Paper Details

Date Published: 15 February 2006
PDF: 7 pages
Proc. SPIE 6137, Lasers in Dentistry XII, 61370N (15 February 2006); doi: 10.1117/12.661801
Show Author Affiliations
Daniel Fried, Univ. of California, San Francisco (United States)
Christopher M. Bühler, Univ. of California, San Francisco (United States)
Patara Ngaotheppitak, Univ. of California, San Francisco (United States)
Cynthia L. Darling, Univ. of California, San Francisco (United States)


Published in SPIE Proceedings Vol. 6137:
Lasers in Dentistry XII
Peter Rechmann; Daniel Fried, Editor(s)

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