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A Determination Method of Equiangular Division Angle Based on the Unit Angular Distance Ratio of Orthodontic Archwire Bending Point

A technology for orthodontic archwires and determination methods, applied in archwires, orthodontics, medical science, etc., can solve problems such as lack of orthodontic archwires, achieve the effects of reducing the calculation scale, reducing the number of cycles, and improving efficiency

Active Publication Date: 2021-05-18
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, the present invention proposes a determination method based on the ratio of the unit angular distance of the orthodontic arch wire bending point and the equal angle division angle, which solves the lack of such orthodontic arch wire in the current orthodontic arch wire bending technology field. The problem of the determination method of the angle when dividing the angle realizes the reasonable division of this kind of orthodontic archwire, avoids the interference in the bending process, and realizes the efficient digital bending of the orthodontic archwire

Method used

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  • A Determination Method of Equiangular Division Angle Based on the Unit Angular Distance Ratio of Orthodontic Archwire Bending Point
  • A Determination Method of Equiangular Division Angle Based on the Unit Angular Distance Ratio of Orthodontic Archwire Bending Point
  • A Determination Method of Equiangular Division Angle Based on the Unit Angular Distance Ratio of Orthodontic Archwire Bending Point

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Embodiment 1

[0044] Embodiment 1: as figure 1 , figure 2 , image 3 , Figure 4 As shown, this specific implementation mode adopts the following technical solutions: a method for determining the equal-angle division angle based on the unit angular distance ratio of the orthodontic archwire bending point, and the specific implementation process of the method is:

[0045] Step 1. Equal angle division data import:

[0046] According to the patient's personalized orthodontic archwire curve with i forming control points, input the personalized orthodontic archwire curve forming control point information set M={m 1 , m 2 , m 3 ,...,m i}, m i =(u i , v i ,w i )' is the coordinates of each personalized orthodontic archwire curve forming control point, each orthodontic archwire curve forming control point m i Each corresponds to a forming control point robot motion information unit n i , so the robot motion information set of the input forming control point is N={n 1 , n 2 , n 3 ,.....

Embodiment 2

[0071] Embodiment 2: as figure 2 As shown, when the unit bending point density of each bending point is less than the upper limit of the unit bending point density , in the process of determining a personalized orthodontic archwire curve based on the unit angular distance ratio of the orthodontic archwire bending point and the equal angle division angle, such as image 3 As shown, assuming that through the calculation of step two, the initial number of equal-angle divisions is a=6, and by continuing to step three, the division angle β determined under the initial number of equal-angle divisions can be calculated. Generate 6 iso-angle domains with the same angle on the archwire curve, and then proceed to step 4 to determine whether to increase the number of divisions, that is, judge from the first iso-angle domain, and judge the unit angular distance ratio of the bending point of the iso-angle domain and Whether it satisfies the set angle-to-distance ratio and upper limit ...

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Abstract

A method for determining equal-angle division angles based on the unit angular distance ratio of orthodontic archwire bending points, which relates to the technical field of orthodontic archwire bending, when the unit bending points of each bending point on the orthodontic archwire curve When the densities are relatively small and are less than the upper limit of the set unit bending point density, when the bending sequence is planned for this type of orthodontic archwire by applying equal angle division, based on the orthodontic archwire curve forming control point The information set, the robot motion information set of the forming control point, combined with the characteristics of the robot bending orthodontic archwire, set the unit angular distance ratio and upper limit of the bending point in the equal angle domain, and established a bending system based on orthodontic archwire The equiangular division angle determination method of the point unit angular distance ratio sum changes the division angle according to the unit angular distance ratio sum of the equiangular domain during the equiangular division process, finally determines and outputs the division angle. The invention ensures the rationality of determining the division angle and improves the planning efficiency through the quantitative constraint on the difficulty of bending the division area.

Description

technical field [0001] The patent of the present invention relates to a method for determining equal angle division angles based on the unit angular distance ratio of orthodontic archwire bending points, and belongs to the technical field of orthodontic archwire bending. Background technique [0002] Malocclusion is the third largest oral disease that threatens human health, and it has a high incidence rate in the population. In modern stomatology, fixed orthodontic treatment is a commonly used and effective orthodontic treatment, and the bending of the orthodontic archwire Manufacturing is the key to fixed orthodontic technology. In recent years, under the influence of digital manufacturing technology, the traditional oral manufacturing process is undergoing revolutionary changes. The field of orthodontics has also benefited from digital technology. The processing of arch wires in orthodontic appliances It is developing towards digitalization, but the efficient planning of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C7/20A61C7/02
CPCA61C7/002A61C7/026A61C7/20
Inventor 姜金刚郭亚峰姚亮吴殿昊张永德曾阳
Owner HARBIN UNIV OF SCI & TECH