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Automatic intraoral 3D scanner with low coherence ranging

A technology of internal scanning, scanner, applied in the direction of using tomography for diagnosis, application, oral mirror, etc., which can solve the problems of incomplete depth data, inconsistency, difficulty, etc.

Pending Publication Date: 2020-01-03
DENTAL IMAGING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With handheld OCT devices, it can be difficult to maintain control of the probe over the tooth surface in its direction of travel
Poorly controlled movement of the probe can result in inconsistent or incomplete depth data, requiring considerable processing resources to compensate for positioning inaccuracies and inadvertent probe movement during the scanning process
It can be very difficult to obtain accurate images of more than one or two teeth at a time

Method used

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  • Automatic intraoral 3D scanner with low coherence ranging
  • Automatic intraoral 3D scanner with low coherence ranging
  • Automatic intraoral 3D scanner with low coherence ranging

Examples

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Embodiment Construction

[0032] The following is a description of exemplary method and / or apparatus embodiments, reference being made to the drawings in which like reference numerals identify like structural elements in each of the several views.

[0033] Where terms are used in the context of the present disclosure, the terms "first", "second", etc. do not necessarily denote any ordinal, sequential or priority relationship, but are used only to more clearly identify a step, element An element or group of elements is distinguished from another step, element or group of elements unless otherwise indicated.

[0034] As used herein, the term "energizable" refers to a collection of devices or components that, when receiving power, and optionally an enabling signal, perform the indicated function.

[0035] In the context of this disclosure, the term "optics" is used generally to refer to lenses and other refractive, diffractive and reflective components or apertures used to shape and direct a beam of light...

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PUM

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Abstract

An intraoral scanning apparatus has a source of low coherence light. An interferometer directs the low coherence light to a reference path and a sample path and generates image data according to interference from combined light returned along the reference and sample paths. A fixture is optically coupled to the sample path and has a bite portion featured for clamping between the jaws of a patient,a track that defines a curved scan path for scanning, one or more scanners configured to direct the sample path light to and from the teeth, and an actuator and translation apparatus that urges the one or more scanners along the curved scan path. A control logic processor synchronizes light scanning and acquisition from the fixture. A display is in signal communication with the control logic processor for display of acquired scan data.

Description

technical field [0001] The present disclosure relates generally to intraoral diagnostic imaging, and more particularly to devices and methods for intraoral scanning. More specifically, the present disclosure relates to scanning devices and methods for generating depth-resolved 3D images of a patient's teeth. Background technique [0002] Growing interest in the capabilities provided by depth-resolved imaging of teeth has led to the development of various types of handheld scanners using optical coherence tomography (OCT). Using OCT scanners, dental practitioners can obtain depth-resolved image data that shows not only surface structure, but also features of the teeth located within the tooth structure, thereby aiding in the diagnosis of disease and providing insight into dental surgery, orthodontics The usefulness of orthodontic and dental impressions. Additionally, disease conditions such as deep caries can be detected. [0003] One of the problems with existing solution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00
CPCA61B1/247A61B5/0066A61B5/0073A61B5/682A61C9/0073A61B5/0088A61B1/00194
Inventor 范传茂V.C.王Y.关J-M.英格尔斯E.R.舍拉德
Owner DENTAL IMAGING TECH