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

Dental crown data extraction method based on digital model

A technology for data extraction and dental crown, applied in the field of tooth model image processing, can solve the problems of low accuracy and low success rate, and achieve the effect of satisfying mass production, reducing requirements and reducing complexity

Active Publication Date: 2015-08-26
杭州一牙数字口腔有限公司
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of low accuracy and low success rate in the existing methods for separating the crown and gingiva, the present invention provides a digital model-based dental model that can accurately segment the data of the crown and gingiva, and has a high success rate of segmentation. crown data extraction method

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
  • Dental crown data extraction method based on digital model
  • Dental crown data extraction method based on digital model
  • Dental crown data extraction method based on digital model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] With reference to accompanying drawing, further illustrate the present invention:

[0042]A method for extracting dental crown data based on a digital model, comprising the following steps:

[0043] 1) Obtain the patient's oral data, use the patient's oral data to reconstruct the patient's three-dimensional dental model, convert the three-dimensional dental model into a digital dental model, and use the spatial triangular mesh M=(G,R) for the digital dental model where G=(V,E,F) is composed of vertex set V={vi}, edge set E={(vi,vj)}, triangular face set F={(vi,vj,vk)} Connected graph, and the grid model satisfies the two-dimensional manifold property;

[0044] 2) The operator clicks in turn the teeth to be divided on the digital jaw model, and the point clicked by the operator is taken as the center of the currently clicked tooth;

[0045] 3) Using the PCA (Principal Component Analysis) algorithm to calculate the least square plane of the entire digital dental model, ...

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

Disclosed is a dental crown data extraction method based on a digital model. The method comprises the following steps: obtaining a digital dental model of a patient; an operator successively performing point-selection on teeth to be segmented on the digital dental model, and taking points clicked by the operator as the centers of currently clicked teeth; obtaining a least square plane of the whole digital dental model and its normal direction; creating a reference plane through the center of each tooth and the normal line of the lease square plane, and taking the normal line of the reference plane as a reference line; rotating the reference line according to an hour hand direction in a stepping mode; obtaining intersection points between a current stepping plane and the digital dental model, wherein these intersection points constitute intersection lines; taking troughs on each intersection line as characteristic points; searching for an intersection line with the least characteristic points as a seed intersection line, wherein the characteristic points on the seed intersection line are taken as seed points; and by taking the seed points as start points and terminal points, searching for a shortest path formed when the seed points surround all the intersection lines by one round. The method has the following advantages: dental crown data and gum data can be accurately segmented, and the segmentation success rate is high.

Description

technical field [0001] The invention belongs to the technical field of tooth model image processing, in particular to a method for automatically extracting tooth crown data in a digitized tooth and jaw model. technical background [0002] In recent years, with the continuous improvement and development of computer graphics and virtual reality simulation technology, computer science and information technology are increasingly integrated and interpenetrated with modern medicine and related technologies. At the same time, with the rapid development of computer software and hardware technology, image acquisition and processing technology, and three-dimensional digital imaging technology in the field of stomatology, computer technology has become an important part of stomatology education, clinical, scientific research and infrastructure construction. Orthodontics, as a branch of the field of stomatology, mainly studies the growth and development of the three-dimensional structur...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T17/00
Inventor 陈飞舟
Owner 杭州一牙数字口腔有限公司
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