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DICM data based tooth jaw system finite element modeling method

A dental system and modeling method technology, applied in the field of oral biomechanics analysis, can solve the problems of long cycle and low efficiency, achieve the effect of improving modeling efficiency and avoiding three-dimensional solid calculation and packaging algorithm

Inactive Publication Date: 2018-07-03
大连市口腔医院
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Problems solved by technology

[0013] Aiming at the problems existing in the prior art, the present invention provides a finite element modeling method of the dental and jaw system based on DICM data, which is used to solve the problems of low efficiency and long period of the existing finite element modeling method of the dental and jaw system

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  • DICM data based tooth jaw system finite element modeling method
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  • DICM data based tooth jaw system finite element modeling method

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[0045] The specific implementation manner of the finite element modeling method of the dental and jaw system based on DICM data is illustrated by an example, but it is not intended as a limitation of the present invention.

[0046] Such as figure 1 Shown is a flow chart of a finite element modeling method for dental and jaw systems based on DICM data in the present invention. Select a complete periodontal tissue, the teeth and jaws of a healthy male youth with neatly arranged teeth as the research object, and set forth the specific implementation process of a finite element modeling method for the dental and jaw system based on DICM data of the present invention:

[0047] CBCT was used to collect three-dimensional information of jaws and teeth to obtain data in DICM format.

[0048] Set the lower limit of the gray threshold to 1300 and the upper limit to 5000, perform tissue identification and 3D reconstruction, and obtain a rough tooth model, such as Figure 2a shown.

[0...

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Abstract

The invention provides a DICM data based tooth jaw system finite element modeling method belonging to the field of dental biomechanical analysis methods. The method comprises the following steps: step1, identifying a DICM file, and establishing a tooth crude model and an alveolar bone crude model; step 2, establishing a tooth model, an alveolar bone overall model and an alveolar bone cellous model; step 3, taking out the tooth model from the alveolar bone overall model, and obtaining an alveolar bone model and a parodontium model; step 4, performing meshing on the tooth model, the parodontiummodel and the alveolar bone model; step 5, respectively endowing units belonging to teeth, alveolar bone and parodontium with physical attributes of corresponding tissues, and endowing the unit belonging to the alveolar bone with physical attributes of alveolar bone cortex; and step 6, identifying alveolar bone cellous internal units and endowing alveolar bone cellous physical attributes. According to the invention, a tooth jaw system finite element model can be rapidly and accurately established, so as to effectively improve the finite element analysis efficiency of the dental biomechanicalproblem.

Description

technical field [0001] The invention belongs to the field of oral biomechanics analysis methods, and relates to a finite element modeling method of a dental and jaw system based on DICM data, in particular to a finite element modeling method of a dental and jaw system based on DICM format data of CBCT. Background technique [0002] Three-dimensional finite element method is an important method to study oral biomechanics, and it is widely used in orthodontics, oral restoration, root canal treatment and dental implantation. [0003] To use the three-dimensional finite element method to study oral biomechanics, the first step is to establish a three-dimensional finite element model of the dental and jaw tissue. There are many approaches to finite element modeling of dental and maxillary tissues, among which the finite element modeling method based on cone beam CT (CBCT) is the most widely used. [0004] CBCT adopts cone-beam X-ray scanning, and only needs to rotate 360 ​​degre...

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Application Information

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IPC IPC(8): G16H50/50G06F17/50A61C7/00
CPCA61C7/002G06F30/23
Inventor 王爽张怡孙江韩文利
Owner 大连市口腔医院
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