Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Detecting tooth wear using intra-oral 3D scans

A 3D and dental technology, applied in the processing of 3D images, details related to 3D image data, applications, etc.

Active Publication Date: 2017-03-01
3M INNOVATIVE PROPERTIES CO
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of these methods directly measure the amount of tooth wear exhibited, most are done through subjective characterization

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Detecting tooth wear using intra-oral 3D scans
  • Detecting tooth wear using intra-oral 3D scans
  • Detecting tooth wear using intra-oral 3D scans

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In the field of dentistry, the use of digital 3D models is becoming more and more common. These models can be obtained in vivo using an intraoral scanner, or offline with traditional laser impression scans. Digital 3D models can be used in a variety of clinical tasks, including treatment planning, preparation of crowns and implants, and diagnostic aids, such as to assess the degree of tooth wear.

[0021] figure 1 is a schematic illustration of a system 10 for detecting tooth wear using a digital 3D model based on an intraoral 3D scan. System 10 includes a processor 20 that receives a digital 3D model of tooth 12 from an intraoral 3D tooth scan or dental impression scan. System 10 may also include an electronic display device 16, such as a liquid crystal display (LCD) device, for displaying an indication of tooth wear; and an input device 18 for receiving user commands or other information. Examples of digital 3D models of patient teeth from scans are at figure 2 s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for detecting tooth wear using digital 3D models of teeth taken at different times. The digital 3D models of teeth are segmented to identify individual teeth within the digital 3D model. The segmentation includes performing a first segmentation method that over segments at least some of the teeth within the model and a second segmentation method that classifies points within the model as being either on an interior of a tooth or on a boundary between teeth. The results of the first and second segmentation methods are combined to generate segmented digital 3D models. The segmented digital 3D models of teeth are compared to detect tooth wear by determining differences between the segmented models, where the differences relate to the same tooth to detect wear on the tooth over time.

Description

Background technique [0001] Tooth wear (eg, that associated with bruxism) and receding gums are two conditions (amongst many defects) that can have serious medical consequences if not treated promptly by a dental professional. In the case of bruxism, lateral movement and grinding of teeth can cause significant tooth wear and lead to muscle pain, temporomandibular joint problems, and headaches. In some cases, this can lead to exposed dentin, cavities, and even broken teeth. [0002] Despite the seriousness of these potential consequences, dental professionals have limited tools to diagnose and assess the severity of tooth wear and gingival recession. In the case of tooth wear, these tools include patient questionnaires, clinical examinations by dentists, and bite force measurements. Clinical examination can be performed using an individual tooth wear index, which a dentist can provide a score between 0 and 3 based on visual assessment. However, none of these methods directly...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61B5/00A61B1/24A61C19/04
CPCA61C9/0053A61C7/002A61C19/04A61B5/0088A61B5/4547G06V40/10G06V2201/033G06T7/11G06T7/0016G06T2207/30036G06F30/00G06T13/20G06T15/08G06T19/20G06T2200/04G06T2210/41
Inventor G·索玛桑达拉姆E·J·里布尼克R·西瓦零甘A·艾德T·M·迈耶G·戈尔纳里A·J·萨贝利
Owner 3M INNOVATIVE PROPERTIES CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com