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Bracketless invisible appliance and manufacturing method thereof

A technology of invisible aligners and manufacturing methods, which is applied in medical science, dentistry, orthodontics, etc., can solve the problems of low manufacturing efficiency, low strength of aligners, and difficult manufacturing, so as to reduce the difficulty of cutting, reduce the cost of orthodontics, shorten the The effect of the treatment cycle

Active Publication Date: 2014-12-24
杭州一牙数字口腔有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantages of this invisible aligner without brackets are: 1. It is very difficult and inefficient to process the edges of the labial and lingual panels into waves
2. Cracks are easy to appear between the two teeth, and it is easy to break under the force during wearing. If the workmanship is rough, it is easy to stab the gingival papilla and oral mucosa
3. The orthodontic force F1 generated by the orthodontic appliance is obliquely upward along the connecting arc, and the force required for orthodontic treatment is horizontal, so F1'=Fcosα. Since cosα is less than 0, F1' is always smaller than F1, resulting in The appliance is less strong
In addition, the production of the appliance is very difficult, the production efficiency is low, it is easy to crack, and it is easy to break under force during wearing. If the workmanship is rough, it is easy to stab the gingival papilla and oral mucosa

Method used

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  • Bracketless invisible appliance and manufacturing method thereof
  • Bracketless invisible appliance and manufacturing method thereof
  • Bracketless invisible appliance and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The manufacturing method of the invisible aligner without brackets comprises the following steps:

[0030] 1) Obtain the oral data of the patient, and establish a 3D model of the patient's oral cavity based on the oral data, including tooth data and gingiva data in the 3D model;

[0031] 2) Design the orthodontic plan, adjust the position of the teeth to be corrected to the target orthodontic position, and obtain the dental model;

[0032] 3) Generate cutting lines on the jaw model:

[0033] (3.1) The dental model is represented by a triangular mesh, let M=(G,R) represent a triangular mesh with two-dimensional manifold properties, and G=(V,E,F) is formed by the vertex set V={vi }, a connected graph composed of edge set E={(vi,vj)} and face set F={(vi,vj,vk)};

[0034] (3.2) Carry out shape-conserving parameterization or conformal parametric calculation of the triangular grid, parameterization converts the triangular grid into two-dimensional data, and the plane where t...

Embodiment 2

[0046]The difference between this embodiment and the manufacturing method of Embodiment 1 is that in step (3.4), the closed B-spline parameter curve is translated toward the gingiva. The distance of translation is 1 mm to 3 mm. All the other steps are the same as the preparation method of Example 1.

[0047] Bracketless invisible aligner 2 includes the labial side piece that fits the labial side of the teeth, the lingual side piece that fits the lingual side of the tooth, and the tooth top piece and the tooth side piece that connect the labial side piece and the lingual side piece. The appliance body, the lingual sheet, and the end sheet enclose the patient's dentition. The shape of the appliance body is consistent with the corrected target dentition. The teeth of the appliance body correspond to the teeth of the patient's dentition. The main body includes a fixed position and an orthodontic position, and the orthodontic position is the target orthodontic position of the corr...

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Abstract

The invention relates to a manufacturing method of a bracketless invisible appliance. The manufacturing method comprises the following steps: obtaining the oral data of a patient and establishing a three-dimensional model for an oral cavity of the patient according to the oral data, wherein the three-dimensional model comprises tooth data and gum data; designing a correction scheme, adjusting the position of a tooth to be corrected to a target correction position and obtaining a dental model; generating a cutting line on the dental model; forming the three-dimensional dental model into an entity dental model in a quick forming mode or a 3D printing mode and covering a diaphragm on the entity dental model in a vacuum diaphragm pressing way; cutting the entity dental model coated with the diaphragm by taking the cutting line of the three-dimensional dental model as a cutting path and demolding the diaphragm after the completion of cutting so as to form the appliance. The bracketless invisible appliance is obtained by the manufacturing method. The bracketless invisible appliance and the manufacturing method thereof have the advantages of high processing efficiency, large bearing capacity and difficulty in breakage.

Description

technical field [0001] The invention relates to a invisible aligner without brackets and a manufacturing method thereof. technical background [0002] Bracketless invisible aligner is a computer-aided design and manufacture of transparent elastic material movable orthodontic devices. It is a series of continuous orthodontic devices that achieve the purpose of orthodontics by continuously moving teeth in a small range. [0003] At present, the manufacturing method of invisible aligners without brackets is: first obtain the patient's tooth model; use thermoplastic materials and plaster to fill and mold the tooth model, and obtain a physical model of the patient's teeth and jaws, in which the gingiva part is composed of thermoplastic materials , the tooth part is made of plaster; heating the thermoplastic material at the position of the tooth to be corrected in the physical model of the jaw to soften it, and then moving it to the target correction position; cooling the thermopl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C7/00
Inventor 吕建明陈飞舟
Owner 杭州一牙数字口腔有限公司
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