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Optical detection dental disease using polarized light

Patent ·
OSTI ID:875063
 [1];  [1];  [2];  [3]
  1. Livermore, CA
  2. Danville, CA
  3. San Francisco, CA
+ Show Author Affiliations

A polarization sensitive optical imaging system is used to detect changes in polarization in dental tissues to aid the diagnosis of dental disease such as caries. The degree of depolarization is measured by illuminating the dental tissue with polarized light and measuring the polarization state of the backscattered light. The polarization state of this reflected light is analyzed using optical polarimetric imaging techniques. A hand-held fiber optic dental probe is used in vivo to direct the incident beam to the dental tissue and collect the reflected light. To provide depth-resolved characterization of the dental tissue, the polarization diagnostics may be incorporated into optical coherence domain reflectometry and optical coherence tomography (OCDR/OCT) systems, which enables identification of subsurface depolarization sites associated with demineralization of enamel or bone.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
US 6522407
OSTI ID:
875063
Country of Publication:
United States
Language:
English

References (13)

Imaging and characterization of dental structure using optical coherence tomography
  • Warren, J. A.; Gelikonov, G. V.; Gelikonov, V. M.
  • Technical Digest Summaries of papers presented at the Conference on Lasers and Electro-Optics Conference Edition. 1998 Technical Digest Series, Vol.6, Technical Digest. Summaries of Papers Presented at the Conference on Lasers and Electro-Optics. Conference Edition. 1998 Technical Digest Series, Vol.6 (IEEE Cat. No.98CH36178) https://doi.org/10.1109/CLEO.1998.675955
conference January 1998
Polarization-difference imaging: a biologically inspired technique for observation through scattering media journal January 1995
Diffuse backscattering Mueller matricesof highly scattering media journal January 1997
Guided-wave reflectometry with micrometer resolution journal January 1987
Optical coherence tomography of dental structures
  • Baumgartner, Angela; Hitzenberger, Christoph K.; Dichtl, Sabine
  • BiOS '98 International Biomedical Optics Symposium, SPIE Proceedings https://doi.org/10.1117/12.306017
conference April 1998
Dental OCT journal January 1998
Characterization of dentin and enamel by use of optical coherence tomography journal January 1999
Endoscopic applications of optical coherence tomography journal January 1998
Profilometry with a coherence scanning microscope journal January 1990
Optical coherence tomography journal November 1991
Optical coherence-domain reflectometry: a new optical evaluation technique journal January 1987
In vivo OCT imaging of hard and soft tissue of the oral cavity journal January 1998
Noninvasive diagnosis of early caries with polarization-sensitive optical coherence tomography (PS-OCT)
  • Everett, Matthew J.; Colston, Jr., Bill W.; Sathyam, Ujwal S.
  • BiOS '99 International Biomedical Optics Symposium, SPIE Proceedings https://doi.org/10.1117/12.348347
conference May 1999

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