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Proceedings Paper

Imaging early demineralization with PS-OCT
Author(s): Hobin Kang; Jane J. Jiao; Chulsung Lee; Cynthia L. Darling; Daniel Fried
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Paper Abstract

New methods are needed for the nondestructive measurement of tooth demineralization and remineralization to monitor the progression of incipient caries lesions (tooth decay) for effective nonsurgical intervention and to evaluate the performance of anti-caries treatments such as chemical treatments or laser irradiation. Studies have shown that optical coherence tomography (OCT) has great potential to fulfill this role since it can be used to measure the depth and severity of early lesions with an axial resolution exceeding 10-μm, it is easy to apply in vivo and it can be used to image the convoluted topography of tooth occlusal surfaces. In this paper we attempt to determine the earliest stage at which we can detect significant differences in lesion severity. Automated methods of analysis were used to measure the depth and severity of demineralized bovine enamel produced using a simulated caries model that emulates demineralization in the mouth. Significant differences in the depth and integrated reflectivity from the lesions were detected after only a few hours of demineralization. These results demonstrate that cross polarization OCT is ideally suited for the nondestructive assessment of early demineralization.

Paper Details

Date Published: 6 March 2010
PDF: 6 pages
Proc. SPIE 7549, Lasers in Dentistry XVI, 75490M (6 March 2010); doi: 10.1117/12.849343
Show Author Affiliations
Hobin Kang, Univ. of California, San Francisco (United States)
Jane J. Jiao, Univ. of California, San Francisco (United States)
Chulsung Lee, 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. 7549:
Lasers in Dentistry XVI
Peter Rechmann; Daniel Fried, Editor(s)

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