CA2536969A1 - Optical coherence tomography imaging - Google Patents

Optical coherence tomography imaging Download PDF

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Publication number
CA2536969A1
CA2536969A1 CA002536969A CA2536969A CA2536969A1 CA 2536969 A1 CA2536969 A1 CA 2536969A1 CA 002536969 A CA002536969 A CA 002536969A CA 2536969 A CA2536969 A CA 2536969A CA 2536969 A1 CA2536969 A1 CA 2536969A1
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CA
Canada
Prior art keywords
dentition
optical coherence
coherence tomography
tomography imaging
obscured
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002536969A
Other languages
French (fr)
Other versions
CA2536969C (en
Inventor
Mark Quadling
Henley Quadling
Alan Blair
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D4D Technologies LP
Original Assignee
D4D Technologies, L.P.
Mark Quadling
Henley Quadling
Alan Blair
D4D Technologies, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by D4D Technologies, L.P., Mark Quadling, Henley Quadling, Alan Blair, D4D Technologies, Llc filed Critical D4D Technologies, L.P.
Publication of CA2536969A1 publication Critical patent/CA2536969A1/en
Application granted granted Critical
Publication of CA2536969C publication Critical patent/CA2536969C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
    • A61C9/0073—Interferometric means or methods, e.g. creation of a hologram
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/0209—Low-coherence interferometers
    • G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/65—Spatial scanning object beam
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium

Abstract

A digitized image of an object may include representations of portions of the object that are obscured, occluded or otherwise unobservable. The image may be a multi-dimensional visual representation of dentition. Characteristics of the dentition and its surfaces, contours, and shape may be determined and/or analyzed. A light may be directed toward and reflected from the dentition. The reflected light may be combined with a reference to determine characteristics of the dentition, including obscured areas such as subgingival tissue.
CA002536969A 2003-05-05 2004-05-05 Optical coherence tomography imaging Active CA2536969C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US46875903P 2003-05-05 2003-05-05
US60/468,759 2003-05-05
PCT/US2004/014383 WO2004100068A2 (en) 2003-05-05 2004-05-05 Optical coherence tomography imaging

Publications (2)

Publication Number Publication Date
CA2536969A1 true CA2536969A1 (en) 2004-11-18
CA2536969C CA2536969C (en) 2009-09-29

Family

ID=33435202

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002536969A Active CA2536969C (en) 2003-05-05 2004-05-05 Optical coherence tomography imaging

Country Status (6)

Country Link
US (3) US7355721B2 (en)
EP (1) EP1620007A4 (en)
JP (1) JP4571625B2 (en)
AU (1) AU2004237243B2 (en)
CA (1) CA2536969C (en)
WO (1) WO2004100068A2 (en)

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US8144336B2 (en) 2012-03-27
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