Noninvasive diagnosis of early caries with polarization-sensitive optical coherence tomography (PS-OCT)

Matthew J. Everett; Bill W. Colston Jr.; Ujwal S. Sathyam; Luiz Barroca Da Silva; Daniel Fried; John D. B. Featherstone

doi:10.1117/12.348347

19 May 1999 Noninvasive diagnosis of early caries with polarization-sensitive optical coherence tomography (PS-OCT)

Matthew J. Everett, Bill W. Colston Jr., Ujwal S. Sathyam, Luiz Barroca Da Silva, Daniel Fried, John D. B. Featherstone

Proceedings Volume 3593, Lasers in Dentistry V; (1999) https://doi.org/10.1117/12.348347
Event: BiOS '99 International Biomedical Optics Symposium, 1999, San Jose, CA, United States

Abstract

There is no diagnostic technology presently available utilizing non-ionizing radiation that can image the state of demineralization of dental enamel in vivo for the detection, characterization and monitoring of early, incipient caries lesions. In this study, a Polarization Sensitive Optical Coherence Tomography (PS-OCT) system was evaluated for its potential for the non-invasive diagnosis of early carious lesions. We demonstrated clear discrimination in PS-OCT imags between regions of normal and demineralized enamel in bovine enamel blocks containing well-characterized artificial lesions. Moreover, high-resolution, cross- sectional images were acquired that clearly discriminate between the normal and carious regions of extracted human teeth. Regions that appeared to be demineralized in the PS- OCT imags were verified using histological thin sections examined under polarized light. The PS-OCT system discriminates between normal and carious regions by measuring the state of polarization of the back-scattered 1310 nm light, which is affected by the state of demineralization of the enamel. The demineralized regions of enamel have a large scattering coefficient, thus depolarizing the incident light. This initial study shows that PS-OCT has great potential for the detection, characterization, and monitoring of incipient caries lesions.

Citation Download Citation

Matthew J. Everett, Bill W. Colston Jr., Ujwal S. Sathyam, Luiz Barroca Da Silva, Daniel Fried, and John D. B. Featherstone "Noninvasive diagnosis of early caries with polarization-sensitive optical coherence tomography (PS-OCT)", Proc. SPIE 3593, Lasers in Dentistry V, (19 May 1999); https://doi.org/10.1117/12.348347

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available