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Title: Optical detection dental disease using polarized light

Abstract

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.

Inventors:
 [1];  [2];  [1];  [3];  [4]
  1. Livermore, CA
  2. (Livermore, CA)
  3. Danville, CA
  4. San Francisco, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
875063
Patent Number(s):
6522407
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
optical; detection; dental; disease; polarized; light; polarization; sensitive; imaging; detect; changes; tissues; diagnosis; caries; degree; depolarization; measured; illuminating; tissue; measuring; backscattered; reflected; analyzed; polarimetric; techniques; hand-held; fiber; optic; probe; vivo; direct; incident; beam; collect; provide; depth-resolved; characterization; diagnostics; incorporated; coherence; domain; reflectometry; tomography; ocdroct; systems; enables; identification; subsurface; sites; associated; demineralization; enamel; bone; fiber optic; optical imaging; optical detection; sensitive optical; /356/

Citation Formats

Everett, Matthew J, Colston, Jr., Billy W., Sathyam, Ujwal S, Da Silva, Luiz B, and Fried, Daniel. Optical detection dental disease using polarized light. United States: N. p., 2003. Web.
Everett, Matthew J, Colston, Jr., Billy W., Sathyam, Ujwal S, Da Silva, Luiz B, & Fried, Daniel. Optical detection dental disease using polarized light. United States.
Everett, Matthew J, Colston, Jr., Billy W., Sathyam, Ujwal S, Da Silva, Luiz B, and Fried, Daniel. Wed . "Optical detection dental disease using polarized light". United States. https://www.osti.gov/servlets/purl/875063.
@article{osti_875063,
title = {Optical detection dental disease using polarized light},
author = {Everett, Matthew J and Colston, Jr., Billy W. and Sathyam, Ujwal S and Da Silva, Luiz B and Fried, Daniel},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2003},
month = {1}
}

Works referenced in this record:

Endoscopic applications of optical coherence tomography
journal, January 1998


Dental OCT
journal, January 1998


Diffuse backscattering Mueller matricesof highly scattering media
journal, January 1997


Imaging and characterization of dental structure using optical coherence tomography
conference, January 1998

  • 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

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

  • 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

Optical coherence-domain reflectometry: a new optical evaluation technique
journal, January 1987


Optical coherence tomography of dental structures
conference, April 1998

  • Baumgartner, Angela; Hitzenberger, Christoph K.; Dichtl, Sabine
  • BiOS '98 International Biomedical Optics Symposium, SPIE Proceedings
  • https://doi.org/10.1117/12.306017

Characterization of dentin and enamel by use of optical coherence tomography
journal, January 1999


Guided-wave reflectometry with micrometer resolution
journal, January 1987


Polarization-difference imaging: a biologically inspired technique for observation through scattering media
journal, January 1995


Optical coherence tomography
journal, November 1991


In vivo OCT imaging of hard and soft tissue of the oral cavity
journal, January 1998


Profilometry with a coherence scanning microscope
journal, January 1990