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Foreign object identification and image augmentation and/or filtering for intraoral scanning

An intraoral scanning and image technology, applied in the field of intraoral scanning, which can solve problems such as interference with image registration

Pending Publication Date: 2021-10-22
ALIGN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, foreign objects may move between the generation of different intraoral images, which may interfere with image registration

Method used

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  • Foreign object identification and image augmentation and/or filtering for intraoral scanning
  • Foreign object identification and image augmentation and/or filtering for intraoral scanning
  • Foreign object identification and image augmentation and/or filtering for intraoral scanning

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Embodiment Construction

[0058]Described herein is a method and apparatus for improving the quality of intraoral scans of dental sites that include one or more foreign objects. Interference situations often exist during intraoral scans, where each interference situation includes the presence of one or more foreign objects in an intraoral image generated during the intraoral scan. In some embodiments, the intraoral image may be or include a height map. For example, the intraoral image may be a 2D height map including a depth value for each pixel in the height map. An example of an intraoral scanner that generates such a height map during an intraoral scan is manufactured by Align Technology, Inc. Intraoral digital scanner.

[0059] Foreign objects in intraoral scans (e.g., in intraoral images and / or height maps) may be objects that occur naturally in the mouth but are not part of the dental arch being scanned (e.g., such as saliva, blood, tongue, air bubbles, etc.) . Such foreign objects may also ...

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PUM

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Abstract

In a method of generating a virtual 3D model of a dental site, scan data comprising a plurality of images of a dental site is received during an intraoral scan. An analysis of an image is performed. A representation of a foreign object possibly with known properties is identified in the image based on the analysis. A virtual 3D model of the dental site is generated based on the plurality of images. The image and / or the virtual 3D model of the dental site is modified by adding additional data about the foreign object to or removing data for the foreign object from the intraoral image and / or the virtual 3D model. If the image is modified, it may be modified prior to generation of the virtual 3D model, and the virtual 3D model may be generated using the modified image.

Description

technical field [0001] Embodiments of the present disclosure relate to the field of intraoral scanning, and more particularly to a system and method for real-time filtering of intraoral images generated during intraoral scanning. Background technique [0002] In prosthetic procedures designed to insert dental prostheses in the oral cavity, the dental site where the prosthesis is to be placed should in many cases be accurately measured and carefully studied so that items such as crowns, dentures, etc. ) or bridges may, for example, be appropriately designed and dimensioned to fit in place. For example, a good fit enables the correct transfer of mechanical stress between the prosthesis and the jaw and prevents infection of the gums via the interface between the prosthesis and the tooth site. [0003] Some procedures also call for the fabrication of removable prostheses to replace one or more missing teeth (eg, partial or full dentures), in which case it is necessary to accura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C9/00A61C13/00A61C7/00
CPCA61C7/002A61C9/0046A61C9/0053A61C13/0004A61B1/24A61C9/006G16H50/50G16H30/40G16H50/20G06T2207/30036G06T2207/10016G06T7/11G06T7/55G06T2207/20081G06T2207/20084G06N3/084A61B1/000096A61B1/000094A61B1/00194G06N3/044G06N3/045A61C19/04A61B5/0088G06Q50/22G06N20/00G06T1/0007G06T17/00G06T19/20A61B2018/20353G06T2210/41G06T2200/08A61C9/0073G06T7/0014G06T7/70A61B1/00108A61B1/00009
Inventor A·科佩尔曼迈克尔·萨比娜
Owner ALIGN TECH
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