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Title: Method for detection of dental caries and periodontal disease using optical imaging

A method is disclosed for detecting the presence of active and inactive caries in teeth and diagnosing periodontal disease uses non-ionizing radiation with techniques for reducing interference from scattered light. A beam of non-ionizing radiation is divided into sample and reference beams. The region to be examined is illuminated by the sample beam, and reflected or transmitted radiation from the sample is recombined with the reference beam to form an interference pattern on a detector. The length of the reference beam path is adjustable, allowing the operator to select the reflected or transmitted sample photons that recombine with the reference photons. Thus radiation scattered by the dental or periodontal tissue can be prevented from obscuring the interference pattern. A series of interference patterns may be generated and interpreted to locate dental caries and periodontal tissue interfaces. 7 figs.
Inventors:
; ;
Issue Date:
OSTI Identifier:
392643
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 550600; PA: EDB-96:167885; SN: 96001682411
Patent Number(s):
US 5,570,182/A/
Application Number:
PAN: 8-250,492
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 29 Oct 1996
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; CARIES; IMAGE PROCESSING; DENTISTRY; PHOTON BEAMS; SCATTERING; DIAGNOSIS

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