Rotation center design test method, shell-shaped dental instrument design and preparation method

An inspection method and a technology of the center of rotation, applied in the field of orthodontics, can solve the problems of accuracy deviation, prolong the orthodontic period, medical malpractice, etc., and achieve the effect of ensuring consistency and avoiding bone fenestration or bone cracking.

Active Publication Date: 2022-01-25
SHANGHAI SMARTEE DENTI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the different data collection methods, the above-mentioned digital tooth models do not have a digital root model, so the rotation center of the digital tooth model can only be designed on the digital crown model or the repaired digital crown model. For the digital tooth root model The parameters need to be simulated and estimated. The accuracy of this method has a certain deviation, which may cause the actual orthodontic position of the teeth to be inconsistent with the expected target orthodontic position in the actual orthodontic process. Period; in severe cases, the root of the tooth may even move out of the alveolar bone during the orthodontic treatment, resulting in serious medical accidents

Method used

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  • Rotation center design test method, shell-shaped dental instrument design and preparation method
  • Rotation center design test method, shell-shaped dental instrument design and preparation method
  • Rotation center design test method, shell-shaped dental instrument design and preparation method

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Effect test

Embodiment 1

[0061] This embodiment provides a design inspection method for the center of rotation based on a digital tooth model, which specifically includes the following steps, the flow chart of which is as follows figure 1 shown.

[0062] S110: Classifying a single digital tooth model.

[0063] S120: Fitting the long axis of a single digital tooth model.

[0064] S130: Determining the impedance center of the digital tooth model.

[0065] S140: Simulating and digitalizing tooth model arrangement design.

[0066] S150: Optimal adjustment of the center of rotation.

[0067] The design inspection method of the rotation center provided by the present invention solves the problem that the rotation center selected in the digital tooth arrangement process deviates from the rotation center in the actual correction process. The above steps will be described in detail below.

[0068] Further, the specific implementation process of the above step S110 will be described.

[0069] Digital toot...

Embodiment 2

[0163] This embodiment provides a method for arranging teeth based on a digital tooth model, the flow chart of which is as follows Figure 7 As shown, it specifically includes the following steps.

[0164] S710: Obtain a digital dental model.

[0165] A digital jaw model is acquired, the digital jaw model includes a digital crown model and a digital root model, for example, the digital jaw model can be acquired through a CBCT or a dental panorama.

[0166] S720: Segmenting the digital dental model, dividing the digital dental model into a single digital tooth model with a segmentation boundary.

[0167] Specifically, the digital dentition model is segmented using a segmentation technique to obtain a single digital tooth model, for example, the digital dentition model can be segmented into a single digital tooth model by using a region growing method. In addition to this cutting method, those skilled in the art can also divide the digital jaw model into a single digital toot...

Embodiment 3

[0179] This embodiment provides a method for designing a shell-shaped dental instrument. The method specifically includes the following steps, the flow chart of which is as follows: Figure 8 shown.

[0180] S810: Obtain a digital dental model.

[0181] S820: Segment the digital dental model, segmenting the digital dental model into a single digital tooth model with a segmentation boundary.

[0182] For the specific implementation process of the above step S810 and step S820, please refer to step S710 and step S720 in the second embodiment, which will not be repeated in this embodiment.

[0183] S830: Classifying a single digital tooth model.

[0184] S840: Fitting the long axis of a single digital tooth model.

[0185] S850: Determining the impedance center of the digital tooth model.

[0186] S860: Simulate and digitalize tooth model arrangement design.

[0187] S870: Optimize the adjustment of the rotation center until the rotation center is qualified.

[0188] Please...

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Abstract

The invention provides a design inspection method for a center of rotation, and a design and preparation method for a shell-shaped dental instrument, wherein the design inspection method for a center of rotation includes the steps of: classifying a single digital tooth model, fitting the long axis of a single digital tooth model, and digital tooth model The determination of the impedance center, the tooth arrangement design of the simulated digital tooth model, and the optimal adjustment of the rotation center, wherein, based on the ratio of the moment applied to the digital crown model to the balance moment applied to the digital orthodontic appliance and the tooth arrangement The rotation amount design in the design checks the preset position of the rotation center to realize the optimal adjustment of the rotation center. By classifying the single digital tooth model, fitting the long axis of the tooth model, determining the impedance center, designing the tooth arrangement, and optimizing the adjustment of the rotation center, the designed tooth rotation center is basically consistent with the rotation center in the actual orthodontic process. The effect is in line with the expected effect, further avoiding the occurrence of medical accidents.

Description

technical field [0001] The invention belongs to the technical field of orthodontics, and more precisely relates to the manufacturing technology of a shell-shaped dental appliance, in particular to a design inspection method for a rotation center based on a digital tooth model, a tooth arrangement method based on a digital tooth model, and a shell-shaped dental instrument. The design method and the preparation method of the shell-shaped dental instrument. Background technique [0002] In the design process of orthodontic treatment, it is necessary to move and arrange the patient's single digital tooth model in three-dimensional space, which is to simulate the process of digital tooth arrangement. However, at present, for orthodontics of teeth, the actual intraoral information of the patient is converted into a digital three-dimensional tooth model, and then the digital three-dimensional tooth model is segmented to obtain a digital crown model, and the surface of the digital c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/00
CPCA61C7/002
Inventor 於路王心军姚峻峰
Owner SHANGHAI SMARTEE DENTI TECH CO LTD
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