Rotation center design inspection method, shell-like dental instrument apparatus design and preparation method

An inspection method, shell-like technology, applied in the field of orthodontics, can solve problems such as prolonging the orthodontic cycle, accuracy deviation, and unsatisfactory orthodontic effect, so as to avoid bone window or bone cracking and ensure consistency

Active Publication Date: 2020-07-24
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 inspection method, shell-like dental instrument apparatus design and preparation method
  • Rotation center design inspection method, shell-like dental instrument apparatus design and preparation method
  • Rotation center design inspection method, shell-like dental instrument apparatus design and preparation method

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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 tooth...

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 the 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] Pl...

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Abstract

The invention provides a rotation center design inspection method, shell-like dental instrument apparatus design and a preparation method. The rotation center design inspection method comprises the steps of classifying single digital dental models, fitting long axes of the single digital dental models, determining the impedance center of the digital tooth models, simulating the tooth arrangement design of the digital tooth models, and optimizing and adjusting a rotation center. Based on a ratio of moment applied and generated on a digital tooth crown model to trimming moment applied and generated on a digital tooth treatment appliance and a preset position of a rotation amount design inspection rotation center during tooth arrangement design, optimizing and adjusting of the rotation centerare realized. The single digital tooth models are classified, the long axes of the tooth models are fitted, the impedance center is determined, tooth arrangement design is performed, and the rotationcenter is optimized and adjusted, so that the designed tooth rotation center and the rotation center in an actual treatment process is basically consistent, the tooth treatment effect conforms to desired effects, and generation of medical care accidents is further avoided.

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 Applications(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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