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Proceedings Paper

PS-OCT of natural pigmented and nonpigmented interproximal caries lesions
Author(s): Patara Ngaotheppitak; Cynthia L. Darling; Daniel Fried
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Paper Abstract

Previous studies have demonstrated that Polarization Sensitive Optical Coherence Tomography (PS-OCT) can be used to image early dental caries. The purpose of this study was to compare the measured reflectivity of natural caries lesions with the mineral loss measured using digital microradiography. An all polarization-maintaining fiber based PS-OCT system operating at 1310-nm was used to acquire polarization resolved images of natural white spot lesions and pigmented lesions on the smooth surfaces of extracted teeth. There was a strong positive correlation between the increase in the integrated reflectivity in the perpendicular polarization axis of the PS-OCT system and the increase in the integrated mineral loss or lesion severity for both white-spot and pigmented lesions, P <0.001. Therefore, PS-OCT is well-suited to assess the severity of natural caries lesions and resolve the internal structure of early caries lesions for the potential assessment of the lesion activity.

Paper Details

Date Published: 23 March 2005
PDF: 9 pages
Proc. SPIE 5687, Lasers in Dentistry XI, (23 March 2005); doi: 10.1117/12.604547
Show Author Affiliations
Patara Ngaotheppitak, 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. 5687:
Lasers in Dentistry XI
Peter Rechmann; Daniel Fried, Editor(s)

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