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Rotation center design inspection method, shell-shaped dental device design and preparation method

An inspection method and a technology of a center of rotation, applied in the field of orthodontics, can solve the problems of prolonged orthodontic treatment period, deviation of accuracy, unsatisfactory orthodontic effect, etc., to avoid bone fenestration or bone cracking, and ensure the effect of consistency

Active Publication Date: 2020-07-24
SHANGHAI SMARTEE DENTI TECH CO LTD
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  • Summary
  • 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. Orthodontic cycle; in severe cases, the root of the tooth may even move out of the alveolar bone during the orthodontic process, resulting in serious medical accidents

Method used

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  • Rotation center design inspection method, shell-shaped dental device design and preparation method
  • Rotation center design inspection method, shell-shaped dental device design and preparation method
  • Rotation center design inspection method, shell-shaped dental device design and preparation method

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Embodiment 1

[0063] This embodiment provides a design inspection method for the center of rotation based on a digital crown model, the flow chart of which is shown in figure 1 As shown, it specifically includes the following steps.

[0064] S110: Classification of a single digital crown model.

[0065] S120: Fitting the long axis of the single digital crown model.

[0066] S130: Determining the impedance center of the digital dental crown model.

[0067] S140: Simulating and digitalizing the tooth arrangement design of the crown model.

[0068] S150: Optimal adjustment of the center of rotation.

[0069] 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.

[0070] Further, the specific implementation process of the above step S110 will be des...

Embodiment 2

[0169] This embodiment provides a method for arranging teeth based on a digital crown model, the flow chart of which is as follows Figure 7 As shown, it specifically includes the following steps.

[0170] S710: Obtain a digital dental model.

[0171] The digital dental model includes a digital crown model. For example, the data information of the digital dental model can be obtained by intraoral scanning, or the data information of the digital dental model can be obtained by using an impression, and then the obtained data information can be reconstructed in a three-dimensional manner. Finally, a digital dental model was obtained.

[0172] S720: Segment the digital dental model, and divide the digital dental model into a single digital dental crown model with a segmentation boundary.

[0173] The digitized dental model obtained in step S710 is segmented using segmentation technology, for example, the digital dental model can be firstly segmented into a digital dentition mode...

Embodiment 3

[0185] 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.

[0186] S810: Obtain a digital dental model.

[0187] S820: Segment the digital dental model, and divide the digital dental model into a single digital dental crown model with a segmentation boundary.

[0188] For the implementation process of the above step S810 and step S820, please refer to the step S710 and step S720 in the second embodiment for details, which will not be repeated in this embodiment.

[0189] S830: Classification of a single digital crown model.

[0190] S840: Fitting of the long axis of a single digital crown model.

[0191] S850: Determining the impedance center of the digital dental crown model.

[0192] S860: Simulate and digitalize the tooth arrangement design of the crown model.

[0193] S870: Optimize the adjustment of the rotation center until the...

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Abstract

The invention provides a rotation center design inspection method and a shell-shaped dental device design and a preparation method. The rotation center design inspection method comprises the followingsteps of classifying a single digital dental crown model, fitting a long axis of the single digital dental crown model, determining an impedance center of the digital dental crown model, simulating atooth arrangement design of the digital dental crown model, and optimally adjusting the rotation center, wherein a preset position of an inspection rotation center is designed based on a ratio of moment generated by applying to the digital dental crown model and the balanced moment produced by applying to a digital teeth appliance and rotation amount in tooth arrangement design, thereby realizingoptimal adjusting of the rotation center. Through single digital dental crown model classification, dental crown model long axis fitting, impedance center determination, tooth arrangement design androtation center optimization adjustment, the designed tooth rotation center is basically consistent with the rotation center in the actual correction process, the tooth treatment effect conforms to the expected effect, and medical negligence 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 the center of rotation based on a digital crown model, a tooth arrangement method based on a digital crown model, and a shell-shaped tooth aligner. A method of designing a dental appliance and a method of manufacturing a shell-shaped dental appliance. 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 sur...

Claims

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Application Information

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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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