WO2024141069A1 - Dental assembly and designing method and system therefor, and readable storage medium - Google Patents

Abstract

A dental assembly and a designing method and system therefor, and a readable storage medium. The dental assembly comprises an attachment connected to a tooth and comprises a shell-shaped dental appliance; the shell-shaped dental appliance comprises an aligner body in which a cavity for accommodating teeth is formed, and a cavity body connected to the aligner body and accommodating the attachment, wherein when the cavity body is not worn onto the attachment, the inner contour of the cavity body does not match the outer contour of the attachment. By means of the personalized design of at least part of an unmatched area, an additional added design amount is generated in the unmatched area, so that the straightening assistance effect can be achieved.

Description

Dental component and design method, design system and readable storage medium thereof Technical Field

The present invention relates to the technical field of dental correction, and in particular to a dental component and a design method, a design system and a readable storage medium thereof.

Background technique

Shell-shaped dental appliances made of polymer materials are becoming more and more popular due to their advantages of beauty, convenience and ease of cleaning. Generally, orthodontic treatment using shell-shaped dental appliances requires a series of successive shell-shaped dental appliances, and the geometry of the cavity of each shell-shaped dental appliance that accommodates the tooth is basically matched with the tooth layout desired to be achieved in the corresponding correction step.

In many cases, it is difficult to ensure that a correction force system of appropriate size and direction is applied to the teeth by simply relying on the shell-shaped dental appliance itself. In the prior art, it is usually necessary to bond accessories to the teeth to assist in tooth movement.

Since it is difficult to bond accessories to teeth in clinical practice, especially when you want to replace accessories on a certain tooth, the accessories on the teeth generally remain unchanged during the entire correction stage. Suppose an accessory is added to assist in movement in the early stage because the tooth wants to move in a certain way, and the tooth needs to move in other ways in the subsequent process, and the shape and position of the accessory remain unchanged at this time, in this case, the auxiliary mechanical control of the tooth by the accessory cannot be achieved accurately, and may cause certain non-designed side effects or dislocation risks.

Summary of the invention

The object of the present invention is to provide a dental component and a design method, a design system and a readable storage medium thereof, which can achieve auxiliary correction effects by improving the cavity.

To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a dental component, including an accessory connected to teeth and a shell-shaped dental instrument, the shell-shaped dental instrument including an orthodontic body forming a cavity for accommodating teeth, and a cavity connected to the orthodontic body and accommodating the accessory, wherein when the cavity is not worn on the accessory, the inner contour of the cavity does not match the outer contour of the accessory.

As a further improvement of an embodiment of the present invention, the appliance body includes a first design amount, the cavity includes a second design amount, and the first design amount is different from the second design amount.

As a further improvement of an embodiment of the present invention, the orthodontic device body includes a first design amount, the cavity includes a second design amount, and the first design amount and the second design amount are in the same direction or in different directions.

As a further improvement of an embodiment of the present invention, when the first design amount and the second design amount are in the same direction, the second design amount is greater than the first design amount, or the second design amount is less than the first design amount.

As a further improvement of one embodiment of the present invention, the accessory includes a first active surface, and the cavity includes a second active surface that matches the first active surface. When the first active surface and the second active surface are separated from each other, the shapes of the first active surface and the second active surface are different. When the first active surface and the second active surface are matched with each other, the second active surface is deformed and applies force to the first active surface.

As a further improvement of an embodiment of the present invention, both the first action surface and the second action surface are convex surfaces, and the average curvature of the first action surface is greater than the average curvature of the second action surface.

As a further improvement of an embodiment of the present invention, when the orthodontic device body has no design amount and the first action surface and the second action surface are matched with each other, the second action surface applies force to the first action surface along the first direction to generate an additional design amount.

As a further improvement of one embodiment of the present invention, when the corrector body includes a first design quantity and the first action surface and the second action surface are matched with each other, the second action surface applies force to the first action surface to generate a second design quantity, and the second design quantity is the superposition of the first design quantity and the additional design quantity.

As a further improvement of an embodiment of the present invention, when the appliance body has no design amount and the second action surface is deformed in the opposite direction of the first direction to apply force to the first action surface, the maximum deformation amount of the second action surface in the opposite direction of the first direction is within a range of 0.05mm-0.5mm, the maximum deformation is positively correlated with the additional design amount.

As a further improvement of an embodiment of the present invention, the first direction is the mesial direction or the distal direction.

As a further improvement of an embodiment of the present invention, the attachment includes a plurality of first action surfaces.

As a further improvement of an embodiment of the present invention, a mounting surface is formed between the attachment and the tooth, and the first action surface is adjacent to the mounting surface, or the first action surface is away from the mounting surface.

As a further improvement of one embodiment of the present invention, when the cavity is not worn on the accessory and the cavity and the accessory are in a state of maximum overlap, there is an overlapping area between the cavity and the accessory, the accessory also includes a first independent area protruding from the overlapping area, and the cavity also includes a second independent area protruding from the overlapping area, and when the cavity is worn on the accessory, the overlapping area of the cavity is deformed and acts on the first independent area, and the cavity drives the accessory to move close to the second independent area.

As a further improvement of an embodiment of the present invention, the volume of the second independent area is greater than that of the first independent area so that the accessory and the inner wall of the second independent area are always separated from each other.

As a further improvement of one embodiment of the present invention, the accessory includes multiple first independent areas, and the volume of the second independent area is greater than the total volume of the multiple first independent areas so that the accessory and the inner wall of the second independent area are always separated from each other.

As a further improvement of an embodiment of the present invention, when the appliance body has no design volume and the cavity is worn to the accessory, the cavity acts on the first independent area along a first direction to generate an additional design volume.

As a further improvement of one embodiment of the present invention, when the orthodontic device body includes a first design amount and the cavity is worn to the accessory, the cavity applies force to the first independent area to generate a second design amount, and the second design amount is the superposition of the first design amount and the additional design amount.

As a further improvement of an embodiment of the present invention, the maximum width of the first independent area in the first direction ranges from 0.05 mm to 0.5 mm, and the maximum width is positively correlated with the additional design amount.

As a further improvement of an embodiment of the present invention, the volume of the first independent region is not less than 10*D ³ mm ³ , wherein D is the maximum width of the first independent region in the first direction.

As a further improvement of an embodiment of the present invention, the first direction is the mesial direction or the distal direction.

As a further improvement of an embodiment of the present invention, the minimum width of the second independent region in the first direction is greater than the maximum width of the first independent region.

As a further improvement of an embodiment of the present invention, a mounting surface is formed between the attachment and the tooth, and the first independent area is connected to the mounting surface, or the first independent area and the mounting surface are separated from each other.

As a further improvement of an embodiment of the present invention, the volume of the first independent area is not greater than 10% of the volume of the accessory, and the volume of the overlapping area is greater than 50% of the volume of the accessory.

As a further improvement of an embodiment of the present invention, the inner contour of the cavity matches the outer contour of the overall enlarged accessory, and the enlargement ratios in various directions are the same or different.

As a further improvement of an embodiment of the present invention, the inner contour of the cavity matches the partially enlarged outer contour of the attachment.

As a further improvement of one embodiment of the present invention, when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlapping state, the cavity completely covers the accessory, and the cavity includes a third independent area protruding from the accessory.

As a further improvement of an embodiment of the present invention, when the cavity is worn on the accessory, the third independent area is located in the area where the cavity interacts with the accessory.

As a further improvement of an embodiment of the present invention, the accessory includes a third action surface, the cavity includes a fourth action surface matching the third action surface, the fourth action surface includes an action area and a non-action area, and when the third action surface and the fourth action surface are matched with each other, the action area The active area is deformed to apply force to the third active surface, and there is no force between the non-active area and the third active surface.

To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a dental component, including an accessory connected to teeth and a shell-shaped dental instrument, the shell-shaped dental instrument including an orthodontic body forming a cavity for accommodating teeth, and a cavity connected to the orthodontic body and accommodating the accessory, wherein the orthodontic body includes a first design quantity, the cavity includes a second design quantity, and the first design quantity is different from the second design quantity.

As a further improvement of one embodiment of the present invention, the first design amount and the second design amount are in the same direction or in different directions. When the first design amount and the second design amount are in the same direction, the second design amount is greater than the first design amount, or the second design amount is less than the first design amount.

To achieve one of the above-mentioned purposes, an embodiment of the present invention provides a method for designing a dental component, the method comprising the steps of:

Add accessories to the digital dental model;

A cavity corresponding to the accessory is formed on the digital appliance model, wherein when the cavity is not worn on the accessory, the inner contour of the cavity does not match the outer contour of the accessory;

Acquire a first independent area located at the accessory at the mismatching area, wherein the first independent area is defined as a portion of the accessory protruding out of the overlapping area between the cavity and the accessory when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlapping state;

Parameters of the first independent region are adjusted to generate different additional design quantities.

As a further improvement of an embodiment of the present invention, the step of “adjusting the parameters of the first independent region to generate different additional design quantities” specifically includes:

One or more of the number, position, maximum width and volume of the first independent regions are adjusted to generate different additional design volumes.

As a further improvement of one embodiment of the present invention, the design method further includes the steps of:

A second independent area is generated at the cavity, and the second independent area is defined as a portion of the cavity protruding out of the overlapping area between the cavity and the accessory when the cavity is not worn on the accessory and the cavity and the accessory are in a maximum overlapping state.

As a further improvement of an embodiment of the present invention, the volume of the second independent area is greater than that of the first independent area so that the accessory and the inner wall of the second independent area are always separated from each other.

To achieve one of the above-mentioned purposes, an embodiment of the present invention provides a method for designing a dental component, the method comprising the steps of:

Add accessories to the digital dental model;

A cavity corresponding to the accessory is formed on the digital appliance model, wherein when the cavity is not worn on the accessory, the inner contour of the cavity does not match the outer contour of the accessory;

Acquire a third independent area located in the cavity at the mismatched area, wherein the third independent area is defined as a portion of the cavity protruding from the accessory when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlap state;

The parameters of the third independent region are adjusted to generate different cavity design quantities.

To achieve one of the above-mentioned purposes of the invention, one embodiment of the present invention provides a design system for a dental component, the design system comprising a memory and a processor, the memory storing a computer program executable on the processor, and the processor implementing the steps in the above-mentioned method for designing a dental component when executing the computer program.

To achieve one of the above objects of the invention, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps in the above-mentioned method for designing a dental component when executed by a processor.

Compared with the prior art, the beneficial effect of one embodiment of the present invention is that: one embodiment of the present invention sets the inner contour of the cavity and the outer contour of the accessory to be mismatched. At this time, by personalized design of at least part of the mismatching area, additional additional design volume can be generated in the mismatching area, and the additional design volume can achieve an auxiliary correction effect. In addition, according to the different needs of different correction steps, different cavities can be matched to achieve different auxiliary correction effects while the shape and position of the accessory remain unchanged. Compared with replacing accessories, matching different cavities is more convenient and more personalized.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of a dental assembly according to a first embodiment of the present invention (the cavity is not worn to the attachment);

2a to 2d are schematic diagrams of tooth translation in the prior art;

3a to 3d are schematic diagrams of implementing tooth translation in the first embodiment of the present invention;

FIG4 is a schematic diagram of a dental assembly according to another embodiment;

5 is a schematic diagram of a dental assembly of a first embodiment of the first embodiment of the present invention (the appliance body has no design volume and the first action surface and the second action surface are matched with each other);

6 is a schematic diagram of the first action surface and the second action surface of the first example of the first embodiment of the present invention (the appliance body has no design amount and the first action surface and the second action surface are separated from each other);

7 is a schematic diagram of a dental assembly of a first embodiment of the first embodiment of the present invention (the appliance body has a designed amount and the first action surface and the second action surface are matched with each other);

8 to 15 are various examples of additional design quantities of the first embodiment of the first embodiment of the present invention;

FIG. 16 is a schematic diagram of a dental component having a plurality of first active surfaces according to a first embodiment of the first embodiment of the present invention;

17 is a schematic diagram of a cavity and an accessory in a maximum overlapping state according to a second embodiment of the first embodiment of the present invention;

18 is a schematic diagram of a dental assembly according to a second embodiment of the first embodiment of the present invention (the appliance body has no design volume and the cavity and the attachment are in a state of maximum overlap);

19 is a schematic diagram of a dental assembly according to a second embodiment of the first embodiment of the present invention (the appliance body has no design volume and the cavity is worn to the attachment);

Fig. 20 is a schematic diagram of a dental assembly according to a second embodiment of the first embodiment of the present invention (the appliance body has a designed amount and the cavity is worn to the attachment);

FIG. 21 is a diagram showing steps of a method for designing a dental component according to a first embodiment of the present invention;

FIG. 22 is a schematic diagram of a digital dental model and accessories in the design method of a dental component according to the first embodiment of the present invention;

FIG23 is a schematic diagram of a digital appliance model in the design method of a dental component according to the first embodiment of the present invention;

FIG. 24 is a schematic block diagram of a design system for a dental component according to a first embodiment of the present invention;

Fig. 25 is a schematic diagram of a dental assembly according to a second embodiment of the present invention (the cavity is not worn to the attachment);

26a and 26b are schematic diagrams of tooth translation in the second embodiment of the present invention;

27 is a schematic diagram of the second embodiment of the present invention, wherein the cavity and the attachment are in a state of maximum overlap;

FIG28 is a schematic diagram of a dental assembly according to a second embodiment of the present invention (the appliance body has no design volume and the cavity and the attachment are in a state of maximum overlap);

29 is a diagram showing the steps of a method for designing a dental component according to a second embodiment of the present invention;

30 is a schematic diagram of a digital dental model and accessories in a method for designing a dental component according to a second embodiment of the present invention;

31 is a schematic diagram of a digital appliance model in a method for designing a dental assembly according to a second embodiment of the present invention;

FIG. 32 is a schematic block diagram of a system for designing a dental component according to a second embodiment of the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

1 , a first embodiment of the present invention provides a dental assembly 200 .

The dental assembly 200 includes an attachment 10 connected to a tooth T and a shell-shaped dental instrument 100 .

The shell-shaped dental instrument 100 includes an appliance body 101 that forms a cavity S for accommodating teeth and a housing 102 that is connected to the appliance body 101 and accommodates the attachment 10. Cavity S1.

When the cavity S1 is not worn on the accessory 10 , the inner contour of the cavity S1 does not match the outer contour of the accessory 10 .

Here, "cavity S1 is not worn to accessory 10" means that there is no interaction force between cavity S1 and accessory 10, and cavity S1 does not undergo any deformation; "the inner contour of cavity S1 does not match the outer contour of accessory 10" means that at any matching angle between cavity S1 and accessory 10, the inner contour of cavity S1 and the outer contour of accessory 10 cannot be completely matched.

In the prior art, generally, it is necessary to first use a scanner to scan the patient's mouth to obtain a digital three-dimensional model of the teeth, and then generate a corresponding theoretical model of the dental mold (digital dental mold, non-solid) and the accessories that need to be added for different correction steps, and generate a physical dental mold with accessories.

Then, the preheated hot-pressed film is pressed onto the solid dental mold with accessories, and after processes such as marking, cutting, and demolding, the connected appliance body and cavity are obtained. The inner contour of the cavity is completely matched with the outer contour of the accessory. At this time, in each correction step, the relative relationship between the cavity and the accessory remains unchanged.

In this embodiment, the inner contour of the cavity S1 and the outer contour of the attachment 10 are set to be mismatched. At this time, by personalized design of at least part of the mismatching area, additional additional design volume can be generated in the mismatching area, and the additional design volume can achieve an auxiliary correction effect.

In addition, in response to different needs of different correction steps, different cavities S1 can be used to achieve different auxiliary correction effects without changing the shape and position of the accessory 10. Compared with replacing the accessory 10, using different cavities S1 is more convenient and more personalized.

In other words, this embodiment can directly compensate for tooth movement by setting the inner contour of the cavity S1 and the outer contour of the attachment 10 to be mismatched, without adding other functional parts, and without increasing the design amount on the orthodontic body 101, thereby avoiding the risk of the orthodontic body 101 not sticking or falling off the sleeve. Moreover, the additional design amount provided by the cavity S1 is for the teeth that bear the attachment 10, and will not affect the normal movement of other teeth.

The following is an example of using the additional design amount provided by the cavity S1 of this embodiment for translation enhancement.

2a to 2d show a solution for achieving tooth translation in the prior art.

Referring to Fig. 2a and Fig. 2b, Fig. 2a is a schematic diagram of the shell-shaped dental appliance 100' without design volume and not worn, and Fig. 2b is a schematic diagram of the shell-shaped dental appliance 100' in Fig. 2a being worn. It can be seen that the appliance body 101' and the cavity S1' are completely matched with the tooth T' to be corrected and the attachment 10', and there is no force between the appliance body 101' and the tooth T', and between the cavity S1' and the attachment 10'.

Refer to Figures 2c and 2d. Figure 2c is a schematic diagram of the orthodontic appliance body 101' including the first design amount △X1', the cavity S1' including the second design amount △X2', and the shell-shaped dental appliance 100' is not worn. Figure 2d is a schematic diagram of the shell-shaped dental appliance 100' worn in Figure 2c, and the left side of the orthodontic appliance body 101' is deformed to fit to the tooth T', and the left side of the cavity S1' is deformed to fit to the accessory 10'.

Here, assuming that the first design amount △X1’ is a translation amount of 0.2 mm, the second design amount △X2’ is in the same direction as the first design amount △X1’, and the second design amount △X2’ is also a translation amount of 0.2 mm. When the shell-shaped dental device 100’ is worn, there is a gap of approximately 0.2 mm between the right side of the orthodontic body 101’ and the tooth T’, and the tooth as a whole is translated to the right.

In actual operation, after the correction is completed, the teeth generally cannot reach a translation amount of 0.2 mm. In order to allow the teeth to truly reach a translation amount of 0.2 mm, it is necessary to increase the first design amount △X1’ and the second design amount △X2’. For example, at this time, the first design amount △X1’ and the second design amount △X2’ are both increased to a translation amount of 0.4 mm. Then, when wearing the shell-shaped dental device 100’, there is approximately a 0.4 mm gap between the right side of the orthodontic device body 101’ and the tooth T’. The gap is relatively large, which easily leads to a risk of misfit and debonding between the orthodontic device body 101’ and the tooth T’.

3a to 3d show a solution for achieving tooth translation in this embodiment.

In this embodiment, the appliance body 101 includes a first design amount ΔX1, and the cavity S1 includes a second design amount ΔX2, and the first design amount ΔX1 is different from the second design amount ΔX2.

Here, the first design amount ΔX1 is different from the second design amount ΔX2 in that the two design amounts are different in size or direction.

Specifically, referring to FIG. 3a and FIG. 3b, FIG. 3a is a schematic diagram of the shell-shaped dental apparatus 100 without design volume and not worn, and FIG. 3b is a schematic diagram of the shell-shaped dental apparatus 100 in FIG. 3a when worn. From the schematic diagram of the dental device 100, it can be seen that the appliance body 101 is perfectly matched with the teeth, but the cavity S1 is not matched with the accessory 10. When the shell-shaped dental device 100 is worn, the left side of the cavity S1 is deformed and fits into the accessory 10. The cavity S1 applies force to the accessory 10 to drive the teeth to translate. The deformation of the cavity S1 can be regarded as the additional design amount △Y generated by the cavity S1.

Referring to FIG. 3c and FIG. 3d , FIG. 3c is a schematic diagram showing that the appliance body 101 includes a first design amount △X1, the cavity S1 includes a second design amount △X2, and the shell-shaped dental appliance 100 is not worn, and FIG. 3d is a schematic diagram showing that the shell-shaped dental appliance 100 is worn in FIG. 3c , the left side of the appliance body 101 is deformed and fits to the tooth T, and the left side of the cavity S1 is deformed and fits to the accessory 10.

Here, since the appliance body 101 is integrally connected to the cavity S1, when the appliance body 101 includes the first design quantity △X1, the second design quantity △X2 of the cavity S1 also includes the first design quantity △X1, that is, the second design quantity △X2 at this time is the superposition of the first design quantity △X1 and the additional design quantity △Y.

Assuming that the first design amount △X1 is a translation amount of 0.2 mm, the additional design amount △Y is a translation amount of 0.2 mm, and the first design amount △X1 and the additional design amount △Y are in the same direction, the second design amount △X2 at this time is a translation amount of 0.4 mm. When the shell-shaped dental device 100 is worn, there is approximately a 0.2 mm gap between the right side of the orthodontic device body 101 and the tooth T, and the tooth as a whole is translated to the right.

Different from the prior art, without increasing the first design amount △X1 of the orthodontic appliance body 101, the second design amount △X2 of the cavity S1 can reach 0.4mm, which can meet the 0.2mm translation requirement of the tooth, and because the gap between the right side of the orthodontic appliance body 101 and the tooth T is only 0.2mm, the risk of misfit and debonding between the orthodontic appliance body 101 and the tooth T can be effectively avoided.

That is to say, by setting the cavity S1 and the accessory 10 to be mismatched, the cavity S1 can have an additional additional design amount △Y. When the additional design amount △Y is in the same direction as the first design amount △X1, the second design amount △X2 of the cavity S1 can be effectively increased. That is, the additional design amount △Y generated by the cavity S1 has a translation enhancement effect.

In other words, in this embodiment, the orthodontic device body 101 includes a first design amount △X1, and the cavity S1 includes a second design amount △X2. The first design amount △X1 and the second design amount △X2 are in the same direction or in different directions. When the first design amount △X1 and the second design amount △X2 are in the same direction, the second design amount △X2 is greater than the first design amount △X1, that is, at this time, the cavity S1 plays an auxiliary enhancement effect.

The first design quantity △X1, the second design quantity △X2 and the additional design quantity △Y are all vector parameters, which include the direction and size of the design quantity.

Of course, in other embodiments, cavity S1 may also achieve other auxiliary correction effects.

For example, referring to Figure 4, the first design amount △X1 is the translation amount, and the additional design amount △Y is the elongation amount toward the occlusal surface. At this time, the design amount of cavity S1 for accessory 10 is the superimposed design amount of the first design amount △X1 and the additional design amount △Y, that is, at this time, the additional design amount △Y realizes auxiliary elongation.

That is to say, by setting different additional design amounts △Y, the cavity S1 can produce different auxiliary correction effects, and the setting position and quantity of the additional design amount △Y can be determined according to actual conditions.

Several specific embodiments of the dental assembly 200 are described below.

5 and 6 , in the first embodiment, the accessory 10 includes a first action surface 11, and the cavity S1 includes a second action surface S11 that matches the first action surface 11. When the first action surface 11 and the second action surface S11 are separated from each other, the shapes of the first action surface 11 and the second action surface S11 are different. When the first action surface 11 and the second action surface S11 are matched with each other, the second action surface S11 is deformed and applies force to the first action surface 11.

That is to say, in this embodiment, the mismatching area between the cavity S1 and the attachment 10 is set between the first action surface 11 and the second action surface S11 .

Specifically, when the appliance body 101 has no design amount and the first action surface 11 and the second action surface S11 are matched with each other, the second action surface S11 applies force to the first action surface 11 along the first direction X to generate an additional design amount △Y.

Here, "the appliance body 101 has no design amount" means that when the shell-shaped dental device 100 is worn, there is no gap between the appliance body 101 and the tooth T, and specific reference may be made to FIG3b ; in addition, the additional design amount △Y corresponds to the force acting in the first direction X, and the auxiliary correction effect can be achieved through the additional design amount △Y generated between the first action surface 11 and the second action surface S11.

In this embodiment, when the appliance body 101 has no design amount and the second action surface S11 is deformed in the opposite direction of the first direction X to exert force on the first action surface S11, When the surface 11 is used, the maximum deformation D of the second action surface S11 in the opposite direction to the first direction X is in the range of 0.05 mm-0.5 mm, and the maximum deformation D is positively correlated with the additional design amount △Y.

That is to say, in the process of the second action surface S11 being matched to the first action surface 11, the second action surface S11 needs to be deformed. Generally, the deformation amounts of multiple regions of the second action surface S11 are different, and the additional design amount △Y is determined by the maximum deformation amount D.

It is understandable that the maximum deformation D needs to be set within a reasonable range. If the maximum deformation D is too small, the effective additional design amount △Y cannot be generated. If the maximum deformation D is too large, the elasticity requirement for the second action surface S11 is relatively large, and there is a risk of decoupling between the second action surface S11 and the first action surface 11. Therefore, in this embodiment, the range of the maximum deformation D is set to 0.05mm-0.5mm.

In this embodiment, the first action surface 11 and the second action surface S11 are both convex curved surfaces, and the average curvature of the first action surface 11 is greater than the average curvature of the second action surface S11.

That is to say, the second action surface S11 is flatter than the first action surface 11 , and the second action surface S11 is more likely to deform and match the first action surface 11 .

In this embodiment, combined with Figure 7, when the corrector body 101 includes the first design amount △X1 and the first action surface 11 and the second action surface S11 are matched with each other, the second action surface S11 applies force to the first action surface 11 to generate a second design amount △X2, and the second design amount △X2 is the superposition of the first design amount △X1 and the additional design amount △Y.

Here, “the second design amount ΔX2 is the superposition of the first design amount ΔX1 and the additional design amount ΔY” means that the second design amount ΔX2 exhibits the combined effect of the first design amount ΔX1 and the additional design amount ΔY.

Next, various examples of the additional design amount ΔY are described by taking the first design amount ΔX1 in the mesial direction as an example.

8, when the first direction X is the mesial direction, the second design amount △X2 is the first design amount

The sum of △X1 and the additional design amount △Y. The additional design amount △Y has a translational enhancement effect on the tooth movement.

9 , when the first direction X is the distal direction, the second design amount △X2 is the difference between the first design amount △X1 and the additional design amount △Y, and the additional design amount △Y has a translation weakening effect on the tooth movement.

Combined with Figure 10, when the first direction X has an acute angle with the mesial direction and is biased towards the occlusal surface, the additional design amount △Y can be decomposed into a first component △Y1 toward the mesial direction and a second component △Y2 toward the occlusal surface. The additional design amount △Y has a combined effect of translation enhancement and auxiliary elongation on the tooth movement.

11 , when the first direction X has an acute angle with the mesial direction and is biased toward the gingival end, the additional design amount △Y can be decomposed into a first component △Y1 toward the mesial direction and a second component △Y2 toward the gingival end. The additional design amount △Y has a combined effect of translation enhancement and auxiliary depression on the tooth movement.

Combined with Figure 12, when the first direction X has an obtuse angle with the mesial direction and is biased towards the occlusal surface, the additional design amount △Y can be decomposed into a first component △Y1 toward the distal direction and a second component △Y2 toward the occlusal surface. The additional design amount △Y has a combined effect of reducing translation and assisting elongation of the tooth movement.

13 , when the first direction X has an obtuse angle with the mesial direction and is biased toward the gingival end, the additional design amount △Y can be decomposed into a first component △Y1 toward the distal direction and a second component △Y2 toward the gingival end. The additional design amount △Y has a combined effect of reducing translation and assisting depression on tooth movement.

14 , when the first direction X is at a right angle to the mesial direction and is directed toward the occlusal surface, the additional design amount △Y has an effect of assisting the tooth extension.

15 , when the first direction X is at a right angle to the mesial direction and is directed toward the gingival end, the additional design amount △Y has an auxiliary depression effect on the tooth movement.

The first direction X in the above examples is in a plane substantially parallel to the buccal surface of the tooth T, but the present invention is not limited thereto. The first direction X may also be other directions to achieve other auxiliary correction effects, and the first direction X is mainly determined by the location and shape of the first active surface 11 .

Specifically, a mounting surface T1 is formed between the attachment 10 and the tooth T, and the first action surface 11 is adjacent to the mounting surface T1 , or the first action surface 11 is away from the mounting surface T1 .

That is to say, the first action surface 11 may be any area on the outer surface of the attachment 10 , and each correction step may select a suitable first action surface 11 according to the required auxiliary correction effect.

For example, when the first action surface 11 is away from the mounting surface T1 and the first direction X is toward the cheek surface, the additional design amount ΔY can play an effect of assisting the rotation.

In addition, the above description mainly uses the example that the accessory 10 includes a first action surface 11, but is not limited to this. Referring to FIG. 16 , the accessory 10 may include multiple first action surfaces 11. The multiple first action surfaces 11 may generate multiple additional design quantities △Y under the action of multiple second action surfaces S11 to produce diversified auxiliary corrections for teeth.

17 and 18 are schematic diagrams of a second embodiment of a dental assembly 200 .

In this embodiment, when cavity S1 is not worn on accessory 10 and cavity S1 and accessory 10 are in a state of maximum overlap, there is an overlapping area V between cavity S1 and accessory 10, and accessory 10 also includes a first independent area V1 protruding from the overlapping area V, and cavity S1 also includes a second independent area V2 protruding from the overlapping area V. When cavity S1 is worn on accessory 10, the overlapping area V of cavity S1 is deformed and acts on the first independent area V1, and cavity S1 drives accessory 10 to move close to the second independent area V2.

Here, cavity S1 is enclosed to form a first three-dimensional space in an undeformed state, and accessory 10 forms a second three-dimensional space. "Cavity S1 is not worn to accessory 10 and cavity S1 and accessory 10 are in a state of maximum overlap" means that the first three-dimensional space and the second three-dimensional space are in a state where the overlapping volume is the largest.

It can be understood that the “maximum overlapping state” refers to a virtual matching state between the cavity S1 and the accessory 10 , and does not mean that the cavity S1 and the accessory 10 are actually in a mutually matching state.

In addition, "Attachment 10 also includes a first independent area V1 protruding from the overlapping area V" means that the attachment 10 is formed by splicing the first independent area V1 and the overlapping area V. In actual use, the attachment 10 may include multiple first independent areas V1. Here, it is taken as an example that the attachment 10 includes one first independent area V1.

“Cavity S1 also includes a second independent area V2 protruding from the overlapping area V” means that cavity S1 is formed by splicing the second independent area V2 and the overlapping area V. In actual application, cavity S1 may include multiple second independent areas V2. Here, it is taken as an example that cavity S1 includes one second independent area V2.

In this embodiment, when the cavity S1 is ready to be worn on the accessory 10, the first independent area V1 will hinder the cavity S1. At this time, the overlapping area V of the cavity S1 close to the first independent area V1 will be deformed so that the cavity S1 fits into the first independent area V1. Then, the deformed cavity S1 acts on the first independent area V1 and drives the accessory 10 to move close to the second independent area V2, which can drive the teeth to move.

That is to say, in this embodiment, the mismatching area between the cavity S1 and the accessory 10 is set at the first independent area V1. The first independent area V1 actually corresponds to the area clamped between the first action surface 11 and the second action surface S11 when the orthodontic device body 101 in the first embodiment has no design volume and the first action surface 11 and the second action surface S11 are not matched with each other.

Specifically, in conjunction with FIG. 19 , when the appliance body 101 has no design amount and the cavity S1 is worn to the attachment 10 , the cavity S1 acts on the first independent region V1 along the first direction X to generate an additional design amount △Y.

Here, “the appliance body 101 has no design amount” means that when the shell-shaped dental appliance 100 is worn, there is no gap between the appliance body 101 and the tooth T, as shown in FIG. 3b ; in addition, the additional design amount

△Y corresponds to the force acting in the first direction X, and the auxiliary correction effect can be achieved through the additional design amount △Y generated between the cavity S1 and the first independent area V1.

In this embodiment, the maximum width D of the first independent region V1 in the first direction X is in the range of 0.05 mm to 0.5 mm. Adding design quantity △Y is positively correlated.

Here, the maximum width D of the first independent area V1 in the first direction X actually corresponds to the maximum deformation D of the second active surface S11 in the first embodiment in the opposite direction of the first direction X. The description of the maximum width D can refer to the description of the maximum deformation D in the first embodiment, which will not be repeated here.

It can be understood that the additional design amount ΔY of this embodiment is also related to the volume of the first independent region V1. Therefore, in addition to controlling the maximum width D, the additional design amount ΔY can also be adjusted by controlling the cross-sectional area of the first independent region V1.

In order to ensure a sufficient additional design amount ΔY, the volume of the first independent region V1 is not less than 10*D ³ mm ³ .

In addition, it is also required that the volume of the first independent area V1 is not greater than 10% of the volume of the accessory 10, and the volume of the overlapping area V is greater than 50% of the volume of the accessory 10. That is, it is necessary to ensure that the first independent area V1 accounts for a moderate proportion of the entire accessory 10 to ensure the overall stability of the accessory 10.

In this embodiment, the volume of the second independent area V2 is greater than the volume of the first independent area V1 so that the attachment 10 and the inner wall of the second independent area V2 are always separated from each other.

That is, when the cavity S1 drives the accessory 10 to move close to the second independent area V2, it is necessary to prevent the inner wall of the second independent area V2 from touching the accessory 10 and generating an undesigned amount.

Specifically, the minimum width of the second independent region V2 in the first direction X is greater than the maximum width D of the first independent region V1.

Here, when the cavity S1 drives the accessory 10 to move close to the second independent area V2, the maximum movement distance of the accessory 10 is roughly equal to the maximum width D of the first independent area V1. When the minimum width of the second independent area V2 in the first direction X is set to be greater than the maximum width D, the accessory 10 can be effectively prevented from touching the inner wall of the second independent area V2.

In addition, when the attachment 10 includes a plurality of first independent regions V1 , the volume of the second independent region V2 is greater than the total volume of the plurality of first independent regions V1 so that the attachment 10 and the inner wall of the second independent region V2 are always separated from each other.

In this embodiment, combined with Figure 20, when the orthodontic body 101 includes the first design amount △X1 and the cavity S1 is worn to the accessory 10, the cavity S1 applies force to the first independent area V1 to generate the second design amount △X2, and the second design amount △X2 is the superposition of the first design amount △X1 and the additional design amount △Y.

Here, “the second design amount ΔX2 is the superposition of the first design amount ΔX1 and the additional design amount ΔY” means that the second design amount ΔX2 exhibits the combined effect of the first design amount ΔX1 and the additional design amount ΔY.

The first direction X of this embodiment can be freely selected according to actual conditions, and specific reference can be made to the additional design amount ΔY of various examples in the first embodiment.

Likewise, a mounting surface T1 is formed between the attachment 10 and the tooth T, and the first independent region V1 is connected to the mounting surface T1 , or the first independent region V1 and the mounting surface T1 are separated from each other.

That is to say, the first independent area V1 can be any block on the attachment 10, and each correction step can select a suitable first independent area V1 according to the required auxiliary correction effect.

The first embodiment of the present invention further provides a design method of a dental component 200. In conjunction with FIGS. 21 to 23 and the description of the dental component 200 described above, the design method of the dental component 200 includes the following steps:

Adding attachment 10 to the digital dental model 300;

A cavity S1 corresponding to the accessory 10 is formed on the digital appliance model 400. When the cavity S1 is not worn on the accessory 10, the inner contour of the cavity S1 does not match the outer contour of the accessory 10.

Here, the digital appliance model 400 with the cavity S1 can subsequently generate a shell-shaped dental device 100 with the cavity S1 , and the cavity S1 is connected to the appliance body 101 .

A first independent area V1 located on the accessory 10 is obtained at the mismatched area, wherein the first independent area V1 is defined as a portion of the accessory 10 protruding out of the overlapping area between the cavity S1 and the accessory 10 when the cavity S1 is not worn on the accessory 10 and the cavity S1 and the accessory 10 are in a maximum overlapping state;

The parameters of the first independent region V1 are adjusted to generate different additional design amounts ΔY.

Here, in combination with the description of the dental assembly 200 , when the appliance body 101 has no design amount and the cavity S1 is worn on the attachment 10 , the cavity S1 acts on the first independent area V1 along the first direction X to generate an additional design amount △Y.

That is to say, in this embodiment, the parameters of the first independent region V1 can be adjusted according to different additional design quantities ΔY, so that different correction controls can be achieved.

In this embodiment, the step of “adjusting the parameters of the first independent region V1 to generate different additional design quantities △Y” specifically includes:

One or more of the number, position, maximum width, and volume of the first independent regions V1 are adjusted to generate different additional design amounts ΔY.

In combination with the description of the aforementioned dental component 200, "quantity" means that an accessory 10 may include different numbers of first independent areas V1, "position" refers to the specific setting position of the first independent area V1 on the accessory 10, the maximum width D refers to the maximum width of the first independent area V1 in the first direction X, and the volume refers to the volume of the first independent area V1. The parameters such as quantity, position, maximum width and volume are all related to the additional design quantity △Y, so different additional design quantities △Y can be generated by adjusting one or more of these parameters.

In this embodiment, the design method further includes the steps of:

A second independent area V2 is generated at the cavity S1 , and the second independent area V2 is defined as the portion of the cavity S1 protruding out of the overlapping area between the cavity S1 and the accessory 10 when the cavity S1 is not worn to the accessory 10 and the cavity S1 and the accessory 10 are in a maximum overlapping state.

Here, the specific description of the second independent area V2 can refer to the description of the aforementioned dental component 200. The volume of the second independent area V2 is greater than the volume of the first independent area V1 so that the attachment 10 and the inner wall of the second independent area V2 are always separated from each other.

For other descriptions of the design method of the dental component of this embodiment, reference may be made to the description of the dental component 200 described above, which will not be repeated here.

24 , the first embodiment of the present invention further provides a design system 500 for dental components.

The design system 500 comprises a memory and a processor 50 . The memory stores a computer program that can be run on the processor. When the processor executes the computer program, the steps in the design method of the dental component described above are implemented.

Here, in combination with the description of the aforementioned design method, the processor 50 includes the following units:

An adding unit 51, used for adding an attachment 10 to the digital dental model 300;

A generating unit 52 is used to form a cavity S1 corresponding to the attachment 10 on the digital appliance model 400, and when the cavity S1 is not worn on the attachment 10, the inner contour of the cavity S1 does not match the outer contour of the attachment 10;

An acquisition unit 53 acquires a first independent area V1 located on the accessory 10 at the mismatching area, wherein the first independent area V1 is defined as a portion of the accessory 10 protruding out of the overlapping area between the cavity S1 and the accessory 10 when the cavity S1 is not worn on the accessory 10 and the cavity S1 and the accessory 10 are in a maximum overlapping state;

The processing unit 54 is used to adjust the parameters of the first independent region V1 to generate different additional design quantities ΔY.

It should be noted that the various units of the processor 50 can also be used to execute other steps in the aforementioned design method. For details, please refer to the aforementioned description, which will not be repeated here.

25 is a schematic diagram of a dental assembly 200a according to a second embodiment of the present invention.

In this embodiment, the dental assembly 200a includes an attachment 10a connected to the tooth T and a shell-shaped dental instrument 100a.

The shell-shaped dental appliance 100a includes an appliance body 101a forming a cavity S' for accommodating a tooth, and a cavity S1' connected to the appliance body 101a and accommodating an attachment 10a.

When the cavity S1' is not worn on the accessory 10a, the inner contour of the cavity S1' does not match the outer contour of the accessory 10a.

In the first embodiment, the cavity S1 is partially reduced in size to make the inner contour of the cavity S1 mismatched with the outer contour of the attachment 10, and an additional design amount is generated in the mismatching area, which can achieve an auxiliary correction effect.

The difference between the second embodiment and the first embodiment is that in the second embodiment, the inner contour of the cavity S1' matches the outer contour of the overall enlarged attachment.

That is to say, at this time, the attachment 10a connected to the tooth is enlarged as a whole to obtain an enlarged attachment, and the inner contour of the cavity S1' matches the outer contour of the enlarged attachment. Of course, the attachment 10a connected to the tooth T is still the unenlarged one, that is, the present embodiment enlarges the cavity S1' to make the inner contour of the cavity S1' mismatch with the outer contour of the attachment 10a, and the mismatching area can play an auxiliary weakening effect.

Here, the magnification ratios in each direction may be the same, that is, the inner contour of the cavity S1' obtained at this time is consistent with the overall shape of the outer contour of the attachment 10a, only the size is different. Of course, the magnification ratios in each direction may also be different, and other forms of cavity S1' may be formed at this time.

Alternatively, the inner contour of the cavity S1' matches the outer contour of the partially enlarged attachment 10a, that is, the inner contour of the cavity S1' can be determined by selectively enlarging a local area of the outer contour of the attachment 10a.

Specifically, the cavity S1' in this embodiment is used for translation reduction as an example for explanation.

In this embodiment, the orthodontic body 101a includes a first design amount △X1, and the cavity S1' includes a second design amount △X2. The first design amount △X1 is different from the second design amount △X2. The cavity S1' is enlarged in the opposite direction of the first design amount △X1 to obtain an enlarged amount △Z.

Referring to Figures 26a and 26b, Figure 26a is a schematic diagram of the appliance body 101a including the first design amount △X1, the cavity S1' including the second design amount △X2, and the shell-shaped dental instrument 100a is not worn, and Figure 26b is a schematic diagram of the shell-shaped dental instrument 100a worn in Figure 26a, the left side of the appliance body 101a is deformed and fitted to the tooth T, and the left side of the cavity S1' is deformed and fitted to the accessory 10a.

Here, since the appliance body 101a is integrally connected to the cavity S1’, when the appliance body 101a includes the first design amount △X1, the second design amount △X2 of the cavity S1’ also includes the first design amount △X1, that is, the second design amount △X2 at this time is the difference between the first design amount △X1 and the enlargement amount △Z (because the enlargement amount △Z is in the opposite direction to the first design amount △X1).

Assuming that the first design amount △X1 is a translation amount of 0.2mm, the cavity S1 is enlarged by 0.1mm to the left, that is, the enlargement amount △Z of the cavity S1 is 0.1mm. The enlargement amount △Z weakens the second design amount △X2, that is, the second design amount △X2 at this time is 0.1mm (the difference between the first design amount △X1 and the enlargement amount △Z). The smaller second design amount △X2 can weaken the effect of the cavity S1' on the attachment 10a.

In other words, in this embodiment, the orthodontic device body 101a includes a first design amount △X1, and the cavity S1' includes a second design amount △X2. The first design amount △X1 and the second design amount △X2 are in the same direction or in different directions. When the first design amount △X1 and the second design amount △X2 are in the same direction, the second design amount △X2 is smaller than the first design amount △X1, that is, at this time, the cavity S1' plays an auxiliary attenuation effect.

It can be understood that when the cavity S1' is enlarged to the left to a greater extent and the shell-shaped dental device 100a is worn, the left side of the orthodontic body 101a is deformed and fits to the tooth T, and the left side of the cavity S1' does not deform, and there is no contact between the cavity S1' and the accessory 10a, that is, the second design amount △X2 at this time is directly equal to zero, which can further play an auxiliary weakening effect.

It should be noted that when the tooth to which the attachment 10a is added is an support tooth, it is necessary to reduce the force of the shell-shaped dental instrument 100a on the attachment 10a to reduce the force on the support tooth, thereby avoiding the movement or tilting of the support tooth. This embodiment can reduce the force applied by the cavity S1' to the attachment 10a by enlarging the volume of the cavity S1'.

Of course, at different stages of correction, the same tooth can be the target tooth that needs to be displaced. At this time, the force applied to the target tooth can be assisted by partially reducing the cavity S1 in the first embodiment. The same tooth can also be an supporting tooth that plays a supporting role. At this time, the force on the supporting tooth can be weakened by enlarging the cavity S1' in the second embodiment.

In this embodiment, in combination with Figures 27 and 28, when cavity S1’ is not worn to accessory 10a and cavity S1’ and accessory 10a are in the maximum overlapping state, cavity S1’ completely covers accessory 10a, and cavity S1’ includes a third independent area V3 protruding from accessory 10a, and the third independent area V3 can be regarded as a local enlarged area of cavity S1’.

When the cavity S1' is worn on the accessory 10a, the third independent area V3 is located in the area where the cavity S1' and the accessory 10a interact. When the third independent region V3 is small, the cavity S1 ′ still exerts a certain force on the accessory 10 a . When the third independent region V3 is large, the cavity S1 ′ does not contact the accessory 10 a .

It can be understood that the cavity S1’ also includes a fourth independent area V4 protruding from the accessory 10a. Referring to the description of the first embodiment, the function of the fourth independent area V4 is similar to that of the second independent area V2 in the first embodiment, that is, when the appliance body 101a has a designed amount and the cavity S1’ is worn on the accessory 10a, the third independent area V3 of the cavity S1’ is deformed and acts on the accessory 10a, and the cavity S1’ drives the accessory 10a to move close to the fourth independent area V4. The setting of the fourth independent area V4 can provide space for the movement of the accessory 10a relative to the cavity S1’.

In this embodiment, the accessory 10a includes a third active surface, the cavity S1' includes a fourth active surface matching the third active surface, the fourth active surface includes an active area and a non-active area, and when the third active surface and the fourth active surface are matched with each other, the active area is deformed and applies force to the third active surface, and there is no force between the non-active area and the third active surface.

That is to say, assuming that the cavity has not been enlarged, then when the cavity is worn on the accessory, the fourth action surface will be completely deformed and exert force on the third action surface. In this embodiment, the cavity S1’ is partially enlarged. When the cavity S1’ is worn on the accessory 10a, part of the area (non-action area) on the fourth action surface of the cavity S1’ does not contact the accessory 10a, while part of the area (action area) contacts the accessory 10a. At this time, the force of the cavity S1’ on the accessory 10a can be appropriately reduced.

The second embodiment of the present invention further provides a design method of a dental component 200a. With reference to FIGS. 29 to 31 , the design method comprises the following steps:

Adding an attachment 10a to the digital dental model 300a;

A cavity S1' corresponding to the accessory 10a is formed on the digital appliance model 400a. When the cavity S1' is not worn on the accessory 10a, the inner contour of the cavity S1' does not match the outer contour of the accessory 10a.

A third independent area V3 located in the cavity S1' is obtained at the mismatched area. The third independent area V3 is defined as the portion of the cavity S1' protruding from the accessory 10a when the cavity S1' is not worn to the accessory 10a and the cavity S1' and the accessory 10a are in a maximum overlap state;

The parameters of the third independent region V3 are adjusted to generate different cavity design quantities.

It can be seen that the third independent area V3 is equivalent to the local enlarged area of the cavity S1', and the force exerted by the cavity S1' on the attachment 10a can be reduced through this local enlarged area.

32 , the second embodiment of the present invention further provides a design system 500a for dental components.

The design system 500a comprises a memory and a processor 50a. The memory stores a computer program that can be run on the processor. When the processor executes the computer program, the steps in the method for designing a dental component as described above are implemented.

Here, in combination with the description of the aforementioned design method, the processor 50a includes the following units:

An adding unit 51a, used for adding an attachment 10a to the digital dental model 300a;

A generating unit 52a, configured to form a cavity S1' corresponding to the attachment 10a on the digital appliance model 400a, wherein when the cavity S1' is not worn on the attachment 10a, the inner contour of the cavity S1' does not match the outer contour of the attachment 10a;

The acquisition unit 53a acquires a third independent area V3 located in the cavity S1' at the mismatching area, wherein the third independent area V3 is defined as a portion of the cavity S1' protruding from the accessory 10a when the cavity S1' is not worn to the accessory 10a and the cavity S1' and the accessory 10a are in a maximum overlapping state;

The processing unit 54a adjusts the parameters of the third independent region V3 to generate different cavity design quantities.

It should be noted that the various units of the processor 50a can also be used to execute other steps in the aforementioned design method. For details, please refer to the aforementioned description, which will not be repeated here.

An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the steps in the method for designing a dental component as described above are implemented.

In summary, the first embodiment of the present invention can provide the cavity S1 with an additional additional configuration by setting the cavity S1 and the accessory 10 to be mismatched. Measuring △Y, different additional design amounts △Y can have different auxiliary correction effects.

In addition, in the second embodiment of the present invention, the cavity S1' and the attachment 10a are configured to be mismatched, so that the cavity S1 has a magnification amount ΔZ. Different magnification amounts ΔZ can have different auxiliary attenuation effects.

It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims (37)

A dental component, characterized in that it includes an attachment connected to teeth and a shell-shaped dental appliance, wherein the shell-shaped dental appliance includes an orthodontic body forming a cavity for accommodating teeth, and a cavity connected to the orthodontic body and accommodating the attachment, wherein when the cavity is not worn on the attachment, the inner contour of the cavity does not match the outer contour of the attachment. The dental assembly of claim 1, wherein the appliance body comprises a first design amount, the cavity comprises a second design amount, and the first design amount is different from the second design amount. The dental assembly according to claim 1 is characterized in that the orthodontic body includes a first design amount, the cavity includes a second design amount, and the first design amount is in the same direction or in different directions as the second design amount. The dental assembly according to claim 3, characterized in that when the first design amount and the second design amount are in the same direction, the second design amount is greater than the first design amount, or the second design amount is less than the first design amount. The dental component according to claim 1 is characterized in that the accessory includes a first action surface, the cavity includes a second action surface that matches the first action surface, when the first action surface and the second action surface are separated from each other, the shapes of the first action surface and the second action surface are different, and when the first action surface and the second action surface are matched with each other, the second action surface is deformed and applies force to the first action surface. The dental component according to claim 5, characterized in that the first active surface and the second active surface are both convex surfaces, and the average curvature of the first active surface is greater than the average curvature of the second active surface. The dental assembly according to claim 5 is characterized in that when the orthodontic device body has no design volume and the first action surface and the second action surface are matched with each other, the second action surface applies force to the first action surface along the first direction to generate an additional design volume. The dental component according to claim 7 is characterized in that when the orthodontic device body includes a first design amount and the first action surface and the second action surface are matched with each other, the second action surface applies force to the first action surface to generate a second design amount, and the second design amount is the superposition of the first design amount and the additional design amount. The dental component according to claim 7 is characterized in that when the orthodontic device body has no design amount and the second action surface is deformed in the opposite direction of the first direction to apply force to the first action surface, the maximum deformation amount of the second action surface in the opposite direction of the first direction is in the range of 0.05mm-0.5mm, and the maximum deformation amount is positively correlated with the additional design amount. The dental component according to claim 7, characterized in that the first direction is a mesial direction or a distal direction. The dental assembly of claim 5, wherein the attachment comprises a plurality of first active surfaces. The dental component according to claim 5, characterized in that a mounting surface is formed between the attachment and the tooth, and the first active surface is adjacent to the mounting surface, or the first active surface is away from the mounting surface. The dental component according to claim 1 is characterized in that when the cavity is not worn on the accessory and the cavity and the accessory are in a maximum overlapping state, there is an overlapping area between the cavity and the accessory, the accessory also includes a first independent area protruding from the overlapping area, and the cavity also includes a second independent area protruding from the overlapping area, when the cavity is worn on the accessory, the overlapping area of the cavity is deformed and acts on the first independent area, and the cavity drives the accessory to move close to the second independent area. The dental assembly according to claim 13, wherein the volume of the second independent area is greater than the volume of the first independent area so that the attachment and the inner wall of the second independent area are always separated from each other. The dental assembly according to claim 13, characterized in that the attachment comprises a plurality of first independent regions, and the volume of the second independent region is greater than the total volume of the plurality of first independent regions so that the attachment and the inner wall of the second independent region are always separated from each other. The dental assembly according to claim 13 is characterized in that when the orthodontic appliance body has no design volume and the cavity is worn to the attachment, the cavity acts on the first independent area along a first direction to generate an additional design volume. The dental assembly according to claim 16 is characterized in that when the orthodontic device body includes a first design amount and the cavity is worn to the accessory, the cavity applies force to the first independent area to generate a second design amount, and the second design amount is the superposition of the first design amount and the additional design amount. The dental component according to claim 16, characterized in that the maximum width of the first independent area in the first direction ranges from 0.05 mm to 0.5 mm, and the maximum width is positively correlated with the additional design amount. The dental component according to claim 18, wherein the volume of the first independent region is not less than 10*D ³ mm ³ , wherein D is the maximum width of the first independent region in the first direction. The dental assembly according to claim 16, wherein the first direction is a mesial direction or a distal direction. The dental component according to claim 18, characterized in that the minimum width of the second independent area in the first direction is greater than the maximum width of the first independent area. The dental component according to claim 13, characterized in that a mounting surface is formed between the attachment and the tooth, and the first independent area is connected to the mounting surface, or the first independent area and the mounting surface are separated from each other. The dental assembly of claim 13, wherein the volume of the first independent area is no greater than 10% of the volume of the attachment, and the volume of the overlapping area is greater than 50% of the volume of the attachment. The dental component according to claim 1, characterized in that the inner contour of the cavity matches the outer contour of the overall enlarged attachment, and the enlargement ratios in various directions are the same or different. The dental component according to claim 1, characterized in that the inner contour of the cavity matches the partially enlarged outer contour of the attachment. The dental assembly according to claim 1, characterized in that when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlapping state, the cavity completely covers the accessory, and the cavity includes a third independent area protruding from the accessory. The dental assembly of claim 26, wherein the third independent area is located in an area where the cavity interacts with the accessory when the cavity is worn to the accessory. The dental component according to claim 1 is characterized in that the accessory includes a third active surface, the cavity includes a fourth active surface matching the third active surface, the fourth active surface includes an active area and a non-active area, and when the third active surface and the fourth active surface are matched with each other, the active area is deformed and applies force to the third active surface, and there is no force between the non-active area and the third active surface. A dental component, characterized in that it includes an accessory connected to teeth and a shell-shaped dental instrument, wherein the shell-shaped dental instrument includes an orthodontic body forming a cavity for accommodating the teeth, and a cavity connected to the orthodontic body and accommodating the accessory, wherein the orthodontic body includes a first design amount, and the cavity includes a second design amount, and the first design amount is different from the second design amount. The dental component according to claim 29, characterized in that the first design amount and the second design amount are in the same direction or in different directions, and when the first design amount and the second design amount are in the same direction, the second design amount is greater than the first design amount, or the second design amount is less than the first design amount. A method for designing a dental component, characterized in that the method comprises the steps of: Add accessories to the digital dental model; A cavity corresponding to the accessory is formed on the digital appliance model, wherein when the cavity is not worn on the accessory, the inner contour of the cavity does not match the outer contour of the accessory; Acquire a first independent area located at the accessory at the mismatching area, wherein the first independent area is defined as a portion of the accessory protruding out of the overlapping area between the cavity and the accessory when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlapping state; Parameters of the first independent region are adjusted to generate different additional design quantities. The design method according to claim 31, characterized in that the step of "adjusting the parameters of the first independent area to generate different additional design quantities" specifically comprises: One or more of the number, position, maximum width and volume of the first independent regions are adjusted to generate different additional design volumes. The design method according to claim 31 is characterized in that the design method further comprises the steps of: A second independent area is generated at the cavity, and the second independent area is defined as a portion of the cavity protruding out of the overlapping area between the cavity and the accessory when the cavity is not worn on the accessory and the cavity and the accessory are in a maximum overlapping state. The design method according to claim 33 is characterized in that the volume of the second independent area is greater than the volume of the first independent area so that the accessory and the inner wall of the second independent area are always separated from each other. A method for designing a dental component, characterized in that the method comprises the steps of: Add accessories to the digital dental model; A cavity corresponding to the accessory is formed on the digital appliance model, wherein when the cavity is not worn on the accessory, the inner contour of the cavity does not match the outer contour of the accessory; Acquire a third independent area located in the cavity at the mismatched area, wherein the third independent area is defined as a portion of the cavity protruding from the accessory when the cavity is not worn to the accessory and the cavity and the accessory are in a maximum overlap state; The parameters of the third independent region are adjusted to generate different cavity design quantities. A dental component design system, characterized in that the design system comprises a memory and a processor, the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps in the dental component design method described in any one of claims 31-35 are implemented. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps in the method for designing a dental component as described in any one of claims 31 to 35.