Virtual model of articulation from intra-oral scans

A technology of joint motion and model, applied in the fields of compression mold cup, medical science, image enhancement, etc., can solve the problems of expensive simulation device, time-consuming and so on

Active Publication Date: 2019-03-01
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current data acquisition for mechanical joint motion is time consuming and requires expensive simulation setups

Method used

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  • Virtual model of articulation from intra-oral scans
  • Virtual model of articulation from intra-oral scans
  • Virtual model of articulation from intra-oral scans

Examples

Experimental program
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Embodiment Construction

[0032] The use of digital 3D models is becoming more and more popular in the dental market. These models can be obtained directly in the body using intraoral scanners, cone beam computed tomography (CBCT) scans (i.e. 3D X-rays), or magnetic resonance imaging (MRI); The castings made are obtained indirectly. Some examples of indirect data acquisition methods include, but are not limited to, industrial computed tomography (CT) scans (ie, 3D X-rays), laser scanning, and patterned light scanning. Digital 3D models can be used for a variety of clinical tasks, including treatment planning, crown and implant preparation, prosthodontic restoration, orthodontic setting design, orthodontic appliance design, and diagnostic aids such as assessing or visually illustrating tooth wear.

[0033] overview

[0034] Embodiments of the present invention calculate a virtual model of mandibular joint motion from several extreme occlusal scans captured with an intraoral scanner. Since the virtu...

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Abstract

The invention provides a method for determining virtual articulation from dental scans. The method includes receiving digital 3D models of a person's maxillary and mandibular arches, and digital 3D models of a plurality of different bite poses of the arches. The digital 3D models of the maxillary and mandibular arches are registered with the bite poses to generate transforms defining spatial relationships between the arches for the bite poses. Based upon the digital 3D models and transforms, the method computes a pure rotation axis representation for each bite pose of the mandibular arch withrespect to the maxillary arch. The virtual articulation can be used in making restorations or for diagnostic purposes.

Description

Background technique [0001] Digital dentistry is a growing trend as more and more dentists rely on digital impression systems. These systems use intraoral scanning cameras or scan traditional physical impressions and associated processing systems to generate digital three-dimensional (3D) models of the patient's teeth. [0002] The digital 3D model can then be used for prosthodontics and advanced diagnostics such as detecting tooth wear. Accurate joint motion is a key factor in performing such repairs and diagnostics. Current data acquisition for mechanical joint motion is time consuming and requires expensive simulation setups. Specifically, current techniques involve manual procedures using facebows and laboratory articulators to capture mandibular joint motion data for complex rehabilitation. [0003] Therefore, a digital replacement is needed for the current manual process for obtaining joint motion information. Contents of the invention [0004] According to the inv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C9/00A61C13/30
CPCA61C11/00A61C19/05G06T2207/10016G06T7/74G06T19/20G06T2219/2004G06T2219/2016A61C7/002A61C9/0053G06T7/0016G06T2207/30036G06T7/344G06T7/75A61C2007/004
Inventor 阿尔贝托·阿尔瓦雷斯埃里克·S·汉森史蒂文·C·德姆洛理查德·E·拉比
Owner 3M INNOVATIVE PROPERTIES CO
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