Dental component and design method, system and computer readable storage medium thereof

Abstract

The present invention discloses a dental component and its design method, system, and computer-readable storage medium. The design method includes the following steps: adding accessories to a digital dental model of step N according to an initial design quantity; obtaining an actual design quantity of a digital appliance model of step N+L, where the digital appliance model of step N+L corresponds to the digital dental model of step N+L with accessories, where N and L are both integers not less than 1; obtaining a deviation between the actual design quantity and the initial design quantity; and when the absolute value of the deviation is greater than a preset value, adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance model from step N+1 to step N+L to compensate for the deviation. The present invention effectively compensates for the deviation by adding an auxiliary force-applying structure to the digital appliance model, thereby effectively completing the actual design quantity. In other words, the provision of the auxiliary force-applying structure can achieve an auxiliary correction effect.

Description

Technical Field

[0001] The present invention relates to the technical field of dental orthodontics, and in particular to a dental component and a design method, system and computer-readable storage medium thereof. Background Art

[0002] Shell-shaped dental appliances made of polymer materials are becoming increasingly popular due to their aesthetics, convenience, and ease of cleaning. Typically, orthodontic treatment using shell-shaped dental appliances requires a series of successive shell-shaped appliances, each housing a tooth with a geometry that essentially matches the desired tooth placement for the corresponding treatment step.

[0003] In many cases, it is difficult to ensure that a corrective force system of appropriate size and direction is applied to the teeth by relying solely 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.

[0004] Since it is difficult to bond accessories to teeth in clinical practice, especially when you want to replace the accessories of a certain tooth, the accessories on the teeth generally remain unchanged during the entire correction stage. Suppose an accessory is added in the early stage to assist in movement 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

[0005] The object of the present invention is to provide a dental component and a design method, system and computer-readable storage medium thereof, which can achieve auxiliary correction effects.

[0006] To achieve one of the above-mentioned objectives, an embodiment of the present invention provides a method for designing a dental component, the method comprising the steps of:

[0007] Add accessories to the digital dental model of step N according to the initial design;

[0008] Obtaining actual design quantities of the digital appliance model of step N+L, wherein the digital appliance model of step N+L corresponds to the digital dental model of step N+L with accessories, wherein N and L are both integers not less than 1;

[0009] Obtaining a deviation between the actual design value and the initial design value;

[0010] When the absolute value of the deviation is greater than a preset value, an auxiliary force-applying structure is added to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to compensate for the deviation.

[0011] As a further improvement to one embodiment of the present invention, the step of "when the absolute value of the deviation is greater than a preset value, adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance models from step N+1 to step N+L to compensate for the deviation" specifically includes:

[0012] Determining whether the absolute value of the deviation is greater than a preset value;

[0013] If yes, then adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to compensate for the deviation;

[0014] If not, continue to determine whether the actual design quantity of the digital appliance model in step N+L includes the additional design quantity;

[0015] If yes, then adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate the additional design amount;

[0016] If not, no auxiliary force-applying structure is added.

[0017] As a further improvement of an embodiment of the present invention, the additional design amount includes auxiliary mesial movement, auxiliary distal movement, auxiliary depression, auxiliary extension or auxiliary rotation.

[0018] As a further improvement of one embodiment of the present invention, the step of "adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance model from step N+1 to step N+L to compensate for the deviation" specifically includes:

[0019] An auxiliary force-applying structure is formed at the cavity of the corresponding accessory of the digital appliance model of the N+Lth step or at least part of the digital appliance model of the N+1th step to the N+Lth step to generate an additional design quantity, wherein the overall design quantity of the digital appliance model is different from the local design quantity formed between the cavity and the accessory, and the local design quantity includes the additional design quantity.

[0020] As a further improvement of one embodiment of the present invention, the step of "adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance model from step N+1 to step N+L to compensate for the deviation" specifically includes:

[0021] An auxiliary force-applying structure is formed at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate additional design volume, 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, and the auxiliary force-applying structure is located in the mismatching area.

[0022] As a further improvement to one embodiment of the present invention, the step of "forming an auxiliary force-applying structure at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate an additional design amount" specifically includes:

[0023] A first action surface located at the attachment and a second action surface located at the cavity are obtained at the mismatch area. When the digital appliance model has no 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 along the first direction to generate an additional design quantity.

[0024] As a further improvement to one embodiment of the present invention, the step of "forming an auxiliary force-applying structure at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate an additional design amount" specifically includes:

[0025] A first independent area located at the accessory is obtained at the mismatch area. When the digital appliance model has no design amount and the cavity is worn on the accessory, the cavity acts on the first independent area along a first direction to generate an additional design amount, wherein the first independent area is defined as the part of the accessory that protrudes 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.

[0026] As a further improvement of an embodiment of the present invention, the design method further includes:

[0027] The maximum width of the first independent area in the first direction is set to be in a range of 0.05 mm to 0.5 mm.

[0028] As a further improvement of an embodiment of the present invention, the design method further includes:

[0029] A second independent area is generated at the cavity, and the cavity drives the accessory to move close to the second independent area, wherein the second independent area is defined as the part of the cavity 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.

[0030] As a further improvement of an embodiment of the present invention, the design method further includes:

[0031] The volume of the second independent area is set to be larger 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.

[0032] As a further improvement of an embodiment of the present invention, the step of "obtaining the deviation between the actual design value and the initial design value" specifically includes:

[0033] Obtain a deviation angle between the resultant force direction of the actual design quantity and the resultant force direction of the initial design quantity.

[0034] As a further improvement of one embodiment of the present invention, the step of "adding accessories to the digital dental model of step N according to the initial design quantity" specifically includes:

[0035] Obtaining the spatial position of the Nth step and the spatial position of the N+Mth step of the digital dental model, where M is an integer not less than 1;

[0036] Calculating the initial design quantity required to reach the spatial position of the Nth step from the spatial position of the Nth step, the initial design quantity including the translation quantity and the rotation quantity;

[0037] Determine the shape and location of the accessories according to the initial design quantity;

[0038] Add the attachment at the adding position.

[0039] As a further improvement of an embodiment of the present invention, the initial design amount is a main translation amount among the translation amounts.

[0040] As a further improvement of an embodiment of the present invention, the design method further includes:

[0041] When the auxiliary force-applying structure is added to the digital appliance model of step N+1, the auxiliary force-applying structure is not added to the digital appliance model of step N+2.

[0042] To achieve one of the above-mentioned objects of the invention, one embodiment of the present invention provides a dental component, wherein the dental component is obtained by any one of the above-mentioned methods for designing a dental component.

[0043] To achieve one of the above-mentioned objects of the invention, one embodiment of the present invention provides a dental component design system, characterized in that the design system includes 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, it implements the steps in the dental component design method described above.

[0044] To achieve one of the above-mentioned objects of the invention, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of the above-mentioned method for designing a dental component when executed by a processor.

[0045] Compared with the prior art, the beneficial effect of one embodiment of the present invention is that one embodiment of the present invention can effectively compensate for the deviation by adding an auxiliary force-applying structure to the digital orthodontic appliance model, thereby effectively completing the actual design amount. That is to say, the setting of the auxiliary force-applying structure can achieve an auxiliary correction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a diagram of steps in a method for designing a dental component according to an embodiment of the present invention;

[0047] Figure 2 is a schematic diagram of a digital dental model and accessories in a method for designing a dental component according to an embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of a digital appliance model in a method for designing a dental component according to an embodiment of the present invention;

[0049] Figure 4 1 is a detailed step diagram of step S100 of the method for designing a dental component according to one embodiment of the present invention;

[0050] Figure 5 is a schematic diagram of a digital appliance model without design volume and without the cavity being worn to the attachment according to an embodiment of the present invention;

[0051] Figure 6 yes Figure 5 Schematic diagram of the middle cavity being worn to the accessory;

[0052] Figure 7 is a schematic diagram of a cavity and an accessory in a state of maximum overlap according to an embodiment of the present invention;

[0053] Figure 8 yes Figure 7 Schematic diagram of the digital appliance model without design volume and the cavity not being worn to the accessories;

[0054] Figure 9 yes Figure 8 Schematic diagram of the middle cavity being worn to the accessory;

[0055] Figure 10 FIG. 1 is a schematic diagram of a design system for a dental component according to an embodiment of the present invention.

[0056] Figure 11 is a schematic diagram of a dental assembly according to an embodiment of the present invention (the cavity is not worn to the attachment);

[0057] Figures 12a to 12d It is a schematic diagram of the existing technology for achieving tooth translation;

[0058] Figures 13a to 13d is a schematic diagram of tooth translation achieved in one embodiment of the present invention;

[0059] Figure 14 is a schematic diagram of a dental assembly according to another embodiment;

[0060] Figure 15 Schematic diagram of a dental assembly according to a first embodiment of the present invention (the appliance body has no design volume and the first active surface and the second active surface are mated with each other);

[0061] Figure 16 Schematic diagram of the first active surface and the second active surface of the first embodiment of the present invention (the appliance body has no design volume and the first active surface and the second active surface are separated from each other);

[0062] Figure 17 Schematic diagram of a dental assembly according to a first embodiment of the present invention (the appliance body has a designed size and the first active surface and the second active surface are mated with each other);

[0063] Figures 18 to 25 are various examples of additional design quantities of the first embodiment of the present invention;

[0064] Figure 26 is a schematic diagram of a dental component having multiple first active surfaces according to a first embodiment of the present invention;

[0065] Figure 27 is a schematic diagram of a second embodiment of the present invention, in which the cavity and the attachment are in a state of maximum overlap;

[0066] Figure 28 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);

[0067] Figure 29 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 is worn to the attachment);

[0068] Figure 30 is a schematic diagram of a dental assembly according to a second embodiment of the present invention (the appliance body has a designed amount and the cavity is worn to the attachment);

[0069] Figure 31 is a schematic diagram of a dental assembly according to another embodiment of the present invention. DETAILED DESCRIPTION

[0070] The present invention will be described in detail below with reference to 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 those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0071] Combine Figures 1 to 3 One embodiment of the present invention provides a method for designing a dental component, comprising the steps of:

[0072] S100: adding an attachment 10 to the digital dental model 300 of step N according to the initial design;

[0073] Here, the digital dental model 300 can be a maxillary model or a mandibular model. In addition, the digital dental model 300 can be a complete dental model or a partial dental model. The accessory 10 is a digital accessory, which can be subsequently formed into a physical accessory added to the teeth.

[0074] S102: Obtaining the actual design quantity of the digital appliance model 400 of the N+Lth step, where the digital appliance model 400 of the N+Lth step corresponds to the digital dental model 300 of the N+Lth step with the attachment 10, wherein N and L are both integers not less than 1;

[0075] Here, in the example of correction using dental components, it is usually necessary to divide the correction into multiple successive correction steps (for example, 20 to 40 successive correction steps). Since it is inconvenient to replace accessories during the actual wearing process, the digital dental model 300 of each step is designed by default to have accessories 10 added.

[0076] In addition, the digital dental model 300 of the N+Lth step has a certain amount of change compared to the digital dental model 300 of the Nth step (for example, a certain tooth needs to be designed to be lowered), and the "actual design amount of the digital orthodontic appliance model 400 of the N+Lth step" actually corresponds to the amount of change of the digital dental model 300 of the N+Lth step compared to the digital dental model 300 of the Nth step, and due to the existence of accessory 10, the digital orthodontic appliance model 400 of the N+Lth step actually matches the digital dental model 300 of the N+Lth step with accessory 10.

[0077] S104: Obtaining the deviation between the actual design quantity and the initial design quantity;

[0078] Here, the actual design amount may be greater than the initial design amount, or the actual design amount may be less than or equal to the initial design amount, so the deviation may be positive, negative, or zero.

[0079] S106: When the absolute value of the deviation is greater than a preset value, an auxiliary force-applying structure is added to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to compensate for the deviation.

[0080] It should be noted that this embodiment limits two situations.

[0081] In the first case, after obtaining the actual design quantity of the digital appliance model 400 of the N+Lth step, an auxiliary force-applying structure can be added only to the digital appliance model 400 of the N+Lth step to compensate for the deviation, that is, the actual design quantity of the digital appliance model 400 of each step is considered to determine whether an auxiliary force-applying structure needs to be added.

[0082] For example, the change in the digital dental model 300 of the second step compared to the digital dental model 300 of the first step actually corresponds to the actual design amount of the digital orthodontic appliance model 400 of the second step. The orthodontic appliance model 400 of the second step matches the digital dental model 300 of the second step with the accessory 10. When the orthodontic appliance model 400 of the second step without the auxiliary force structure is worn on the digital dental model 300 of the first step with the accessory 10, since the design amount generated between the cavity S1 on the digital orthodontic appliance model 400 of the second step and the accessory 10 is roughly the initial design amount, there is a deviation between the initial design amount and the actual design amount. At this time, the digital dental model 300 of the first step cannot reach the digital dental model 300 of the second step under the action of the digital orthodontic appliance model 400 of the second step. In this embodiment, adding an auxiliary force structure to the digital orthodontic appliance model 400 of the second step can compensate for the above-mentioned deviation, thereby changing the dental model from the digital dental model 300 of the first step to the digital dental model 300 of the second step.

[0083] In the second case, after obtaining the actual design amount of the digital appliance model 400 of the N+Lth step, an auxiliary force-applying structure may be added to at least part of the digital appliance model 400 from the N+1th step to the N+Lth step to compensate for the deviation, that is, the actual design amount of the digital appliance model 400 of the consecutive multiple steps is considered to determine whether the auxiliary force-applying structure needs to be added, and when the auxiliary force-applying structure needs to be added, the same auxiliary force-applying structure is added to part of the digital appliance models 400 of the consecutive multiple steps, or the same auxiliary force-applying structure is added to all the digital appliance models 400 of the consecutive multiple steps.

[0084] That is to say, compared with the first case, the second case does not perform a separate design of the auxiliary force structure for each step, but performs an overall design of the auxiliary force structure for multiple steps.

[0085] It can be understood that in this embodiment, by adding an auxiliary force-applying structure to the digital orthodontic appliance model 400, the deviation can be effectively compensated, and the actual design amount can be effectively completed. That is to say, the setting of the auxiliary force-applying structure can achieve an auxiliary correction effect. The force generated by the auxiliary force-applying structure cooperates with the force of the accessory 10 to form a composite force. The composite force can realize the force adjustment of the teeth and the precise control of the tooth movement, thereby reducing the side effects or dislocation risks caused by the accessory 10.

[0086] In this embodiment, the actual design amount includes an additional design amount, such as auxiliary mesial movement, auxiliary distal movement, auxiliary depression, auxiliary extension or auxiliary rotation.

[0087] Correspondingly, step S106 specifically includes:

[0088] Determine whether the absolute value of the deviation is greater than a preset value;

[0089] If yes, then an auxiliary force-applying structure is added to the digital appliance model 400 of step N+L or at least part of the digital appliance model 400 of steps N+1 to N+L to compensate for the deviation;

[0090] If not, continue to determine whether the actual design quantity of the digital appliance model 400 in step N+L includes the additional design quantity;

[0091] If yes, then an auxiliary force-applying structure is added to the digital appliance model 400 of step N+L or at least a portion of the digital appliance model 400 of steps N+1 to N+L to generate an additional design amount;

[0092] If not, no auxiliary force-applying structure is added.

[0093] That is to say, when it is determined based on the actual design quantity that there is no need to add an auxiliary force structure, it is possible to further consider whether the actual design quantity of the digital appliance model 400 of the N+Lth step has an additional design quantity. If so, it is still necessary to add an auxiliary force structure to meet the additional design quantity. For example, when it is determined that the N+Lth step is a long-distance translation, the auxiliary force structure can be used to assist in achieving translation enhancement, and the deviation between the additional design quantity and the initial design quantity needs to be controlled to ensure the enhancement effect, for example, the deviation between the additional design quantity and the initial design quantity is controlled to be no greater than a preset value.

[0094] Specifically, assuming that the initial design amount of accessory 10 is a mesial translation of 5 mm, the actual design amount of the digital appliance model 400 in the N+L step is a mesial translation of 10 mm, that is, the actual design amount at this time includes an additional design amount, and the additional design amount is a mesial translation reinforcement amount. If the deviation angle is used as the deviation amount at this time, the deviation amount is almost zero, that is, it is judged that there is no need to add an auxiliary force structure. At this time, it is further judged that the actual design amount includes a mesial translation reinforcement amount, and an auxiliary force structure needs to be added to generate a mesial translation reinforcement amount.

[0095] In this embodiment, combined with Figure 4 , step S100 specifically includes:

[0096] S1001: Obtaining the spatial position of the Nth step and the spatial position of the N+Mth step of the digital dental model 300, where M is an integer not less than 1;

[0097] Here, for example, the spatial position of the Nth step refers to the initial state of the patient's jaw. The geometric model of the patient's jaw, teeth, periodontal membrane and alveolar bone can be obtained through CT scanning to obtain the initial spatial position of the digital jaw model 300. The spatial position of the N+Mth step refers to the final state of the jaw that is expected to be achieved. Of course, the spatial position of the Nth step and the spatial position of the N+Mth step can also be several consecutive steps in the entire correction stage.

[0098] S1002: Calculate the initial design quantities required to reach the spatial position of step N+M from the spatial position of step N, where the initial design quantities include translation and rotation.

[0099] Here, the translation refers to the translation in the mesial-distal direction, occlusal-gingival direction, and buccal-lingual direction, and the rotation refers to the rotation in the first plane, the second plane, and the third plane, wherein the first plane is defined as a plane roughly parallel to the buccal surface, the second plane is defined as a plane perpendicular to the mesial-distal direction, and the third plane is defined as a plane perpendicular to both the first and second planes. Different teeth to be corrected may have different translations and rotations, and the translations and rotations can be represented by the initial design quantities.

[0100] S1003: Determine the shape and location of the attachment 10 based on the initial design quantity;

[0101] Here, L is defined as no greater than M, that is, Appendix 10 corresponds to the initial design quantity between step N and step N+M. Therefore, the actual design quantity between step N and step N+M should also be considered accordingly.

[0102] In addition, considering that the initial design quantity may be too complicated, in actual operation, the attachment 10 is designed with the main translation quantity in the initial design quantity as a reference quantity.

[0103] S1004: Add attachment 10 at the adding position.

[0104] Step S104 specifically includes:

[0105] Obtain the deviation angle between the resultant force direction of the actual design quantity and the resultant force direction of the initial design quantity.

[0106] Here, the deviation angle of the resultant force direction can be used as a reference for judgment. Assuming that the resultant force direction of the initial design amount is the mesial direction, if the deviation angle between the resultant force direction of the actual design amount and the mesial direction is greater than the preset value, it indicates that the current accessory 10 cannot meet the correction effect of the corresponding correction step, and an auxiliary force structure needs to be added for auxiliary correction; if the deviation angle between the resultant force direction of the actual design amount and the mesial direction is not greater than the preset value, it indicates that the current accessory 10 can already meet the correction effect of the corresponding correction step, and there is no need to add an auxiliary force structure.

[0107] In addition, the preset value may be set to 5°, but is not limited thereto.

[0108] In this embodiment, the design method further includes:

[0109] When the auxiliary force-applying structure is added to the digital appliance model 400 in step (N+1), the auxiliary force-applying structure is not added to the digital appliance model 400 in step (N+2).

[0110] That is to say, in this embodiment, the digital appliance model 400 with an auxiliary force structure and the digital appliance model 400 without an auxiliary force structure can be used alternately. In this way, the error accumulation caused by using only one digital appliance model 400 can be avoided. The alternation method can be determined according to the actual situation. For example, an auxiliary force structure is added in the Nth step, not in the N+1 and N+2 steps, and an auxiliary force structure is added in the N+3 step.

[0111] In this embodiment, combined with Figure 5 and Figure 6 The step of “adding an auxiliary force-applying structure to the digital appliance model 400 of step N+L or at least a portion of the digital appliance model 400 from step N+1 to step N+L to compensate for the deviation” specifically includes:

[0112] An auxiliary force structure is formed at the cavity S1 of the corresponding accessory 10 of the digital appliance model 400 of the N+Lth step or at least part of the digital appliance model 400 from the N+1th step to the N+Lth step, thereby generating an additional design amount △Y, wherein the overall design amount of the digital appliance model 400 is different from the local design amount formed between the cavity S1 and the accessory 10, and the local design amount includes the additional design amount △Y.

[0113] Here, the overall design amount refers to the design amount applied to the entire tooth by the digital orthodontic appliance model 400, and the local design amount refers to the design amount of the local area formed between the cavity S1 and the attachment 10. In this embodiment, by setting the overall design amount and the local design amount to be different, an additional design amount △ can be formed at the local design amount, and the additional design amount △Y can achieve an auxiliary correction effect.

[0114] Specifically, continue to combine Figure 5 and Figure 6 The step of “adding an auxiliary force-applying structure to the digital appliance model 400 of step N+L or at least a portion of the digital appliance model 400 from step N+1 to step N+L to compensate for the deviation” specifically includes:

[0115] An auxiliary force-applying structure is formed at the cavity S1 of the corresponding accessory 10 of the digital appliance model 400 of the N+Lth step or at least part of the digital appliance model 400 from the N+1th step to the N+Lth step, thereby generating an additional design amount △Y, wherein, 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, and the auxiliary force-applying structure is located in the mismatching area.

[0116] 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.

[0117] In the existing technology, 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 corresponding theoretical models of the dental mold (digital dental mold, non-physical) and the accessories that need to be added for different correction steps, and generate a physical dental mold with accessories.

[0118] Then, the preheated hot pressing film is pressed onto the solid dental mold with accessories, and after processes such as marking, cutting, and demolding, the connected orthodontic 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, the relative relationship between the cavity and the accessory remains unchanged in each correction step.

[0119] 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, an additional design amount △Y can be generated in the mismatched area by personalized design of at least part of the mismatched area, and the additional design amount △Y can achieve an auxiliary correction effect.

[0120] That is, in this embodiment, by setting the inner contour of the cavity S1 and the outer contour of the attachment 10 to be mismatched, an additional design margin ΔY can be generated at the local design margin formed between the cavity S1 and the attachment 10 .

[0121] In addition, in response to the different needs of different correction steps, while the shape and position of the accessory 10 remain unchanged, different cavities S1 can be used to achieve different auxiliary correction effects. Compared with replacing the accessory 10, using different cavities S1 is more convenient and more personalized.

[0122] 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. Moreover, the additional design amount △Y provided by the cavity S1 is for the teeth that support the attachment 10 and will not affect the normal movement of other teeth.

[0123] Specifically, the step of "forming an auxiliary force-applying structure at the cavity S1 of the corresponding attachment 10 of the digital appliance model 400 of the N+Lth step or at least a portion of the digital appliance model 400 from the N+1th step to the N+Lth step to generate an additional design amount" specifically includes:

[0124] The first action surface 11 located at the attachment 10 and the second action surface S11 located at the cavity S1 are obtained at the mismatch area. When the digital orthodontic appliance model 400 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.

[0125] That is, the mismatching area between the cavity S1 and the attachment 10 may be set between the first action surface 11 and the second action surface S11 .

[0126] Here, "the digital appliance model 400 has no design amount" means that when the digital appliance model 400 is worn, there is no gap between the digital appliance model 400 and the teeth T. In addition, the additional design amount △Y corresponds to the force in the first direction X. The additional design amount △Y generated between the first action surface 11 and the second action surface S11 can achieve an auxiliary correction effect.

[0127] From another perspective, combined Figures 7 to 9 The step of “forming an auxiliary force-applying structure at the cavity S1 of the corresponding attachment 10 of the digital appliance model 400 of the N+Lth step or at least a portion of the digital appliance model 400 from the N+1th step to the N+Lth step to generate an additional design amount” specifically includes:

[0128] A first independent area V1 located on the accessory 10 is obtained at the mismatch area. When the digital appliance model 400 has no design amount and the cavity S1 is worn on the accessory 10, the cavity S1 acts on the first independent area V1 along the first direction X to generate an additional design amount △Y, wherein the first independent area V1 is defined as the part of the accessory 10 protruding from the overlapping area V 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 the maximum overlapping state.

[0129] Here, the cavity S1 is enclosed in an undeformed state to form a first three-dimensional space, and the accessory 10 forms a second three-dimensional space. "The cavity S1 is not worn to the accessory 10 and the cavity S1 and the 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.

[0130] 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.

[0131] In addition, "the first independent area V1 is defined as the portion of the accessory 10 that protrudes out of the overlapping area V between the cavity S1 and the accessory 10" means that the accessory 10 is formed by splicing the first independent area V1 and the overlapping area V. In actual use, the accessory 10 may include multiple first independent areas V1. Here, the example of the accessory 10 including one first independent area V1 is taken.

[0132] That is to say, in this embodiment, the mismatch 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 sandwiched between the first active surface 11 and the second active surface S11 when the aforementioned digital orthodontic appliance model 400 has no design volume and the first active surface 11 and the second active surface S11 are not matched with each other.

[0133] Here, "the digital appliance model 400 has no design amount" means that when the digital appliance model 400 is worn, there is no gap between the digital appliance model 400 and the tooth T. In addition, the additional design amount △Y corresponds to the force in the first direction X. The additional design amount △Y generated between the cavity S1 and the first independent area V1 can achieve an auxiliary correction effect.

[0134] In addition, the design method also includes:

[0135] The maximum width D of the first independent area V1 in the first direction X is set to be in the range of 0.05 mm to 0.5 mm, and the maximum width D is positively correlated with the additional design amount ΔY.

[0136] In this embodiment, the design method further includes:

[0137] A second independent area V2 is generated at the cavity S1, and the cavity S1 drives the accessory 10 to move close to the second independent area V2, wherein the second independent area V2 is defined as the part 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 the maximum overlapping state.

[0138] In addition, in this embodiment, the volume of the second independent area V2 is set to be larger 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.

[0139] 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.

[0140] Combine Figure 10 One embodiment of the present invention further provides a design system 500 for a dental component.

[0141] The design system 500 includes 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 method for designing a dental component as described above are implemented.

[0142] Here, in conjunction with the description of the aforementioned design method, the processor 50 includes the following units:

[0143] An adding unit 51 is used to add an attachment 10 to the digital dental model 300 of step N according to the initial design quantity;

[0144] an acquiring unit 52 for acquiring actual design quantities of the digital appliance model 400 of the N+Lth step, wherein the digital appliance model 400 of the N+Lth step corresponds to the digital dental model 300 of the N+Lth step with the attachment 10, wherein N and L are both integers not less than 1;

[0145] A calculation unit 53 is used to obtain the deviation between the actual design quantity and the initial design quantity;

[0146] The processing unit 54 is configured to add an auxiliary force-applying structure to the digital appliance model 400 of the N+Lth step or at least a portion of the digital appliance model 400 from the N+1th step to the N+Lth step to compensate for the deviation when the absolute value of the deviation is greater than a preset value.

[0147] 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 and will not be repeated here.

[0148] 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.

[0149] Next, a dental unit 200 obtained by the design method of this embodiment will be described.

[0150] Combine Figure 11 , one embodiment of the present invention provides a dental assembly 200 .

[0151] The dental assembly 200 includes an attachment 10 connected to a tooth T and a shell-shaped dental instrument 100 .

[0152] Here, the attachment 10 corresponds to the digital attachment 10 described above. For ease of description, the same reference numerals are used. The shell-shaped dental appliance 100 corresponds to the digital appliance model 400 described above.

[0153] The shell-shaped dental appliance 100 includes an appliance body 101 forming a cavity S for accommodating a tooth, and a cavity S1 connected to the appliance body 101 and accommodating an attachment 10 .

[0154] 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 .

[0155] 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.

[0156] 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 mismatched area, additional design volume can be generated in the mismatched area, and the additional design volume can achieve an auxiliary correction effect.

[0157] That is to say, the aforementioned auxiliary force-applying structure is the mismatching area between the cavity S1 and the attachment 10 .

[0158] In addition, in response to the different needs of different correction steps, while the shape and position of the accessory 10 remain unchanged, different cavities S1 can be used to achieve different auxiliary correction effects. Compared with replacing the accessory 10, using different cavities S1 is more convenient and more personalized.

[0159] 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 appliance body 101, thereby avoiding the risk of the orthodontic appliance 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.

[0160] The following describes an example of the additional design amount provided by the cavity S1 in this embodiment for translation enhancement.

[0161] Combine Figures 12a to 12d , which is a solution for achieving tooth translation in the existing technology.

[0162] Ginseng Figure 12a and Figure 12b , Figure 12a This is a schematic diagram of the shell-shaped dental appliance 100' without design volume and not being worn. Figure 12b for Figure 12a In the schematic diagram of wearing the shell-shaped dental appliance 100', 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'.

[0163] Ginseng Figure 12c and Figure 12d , Figure 12c Schematic diagram of the appliance body 101' including the first design amount ΔX1', the cavity S1' including the second design amount ΔX2', and the shell-shaped dental appliance 100' is not worn. Figure 12d for Figure 12c Schematic diagram of wearing the shell-shaped dental appliance 100 ′, the left side of the appliance body 101 ′ is deformed to fit onto the tooth T′, and the left side of the cavity S1 ′ is deformed to fit onto the attachment 10 ′.

[0164] Here, assuming that the first design amount ΔX1' is a translation amount of 0.2 mm, the second design amount ΔX2' is in the same direction as the first design amount ΔX1', and the second design amount ΔX2' is also a translation amount of 0.2 mm. When the shell-shaped dental appliance 100' is worn, there is a gap of approximately 0.2 mm between the right side of the orthodontic appliance body 101' and the tooth T', and the tooth as a whole appears to be translated to the right.

[0165] However, 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 the shell-shaped dental appliance 100' is worn, there is a gap of approximately 0.4 mm between the right side of the orthodontic appliance body 101' and the tooth T'. This gap is large, which easily leads to the risk of misfit and debonding between the orthodontic appliance body 101' and the tooth T'.

[0166] Combine Figures 13a to 13d , which is the solution for achieving tooth translation in this embodiment.

[0167] Ginseng Figure 13a and Figure 13b , Figure 13a This is a schematic diagram of the shell-shaped dental appliance 100 without design volume and not being worn. Figure 13b for Figure 13a In the schematic diagram of wearing the shell-shaped dental appliance 100, it can be seen that the appliance body 101 is completely matched with the teeth, but the cavity S1 and the attachment 10 are not matched. When the shell-shaped dental appliance 100 is worn, the left side of the cavity S1 is deformed and fits into the attachment 10. The cavity S1 applies force to the attachment 10 and drives the teeth to move horizontally. The deformation of the cavity S1 can be regarded as the additional design amount △Y generated by the cavity S1.

[0168] Ginseng Figure 13c and Figure 13d , Figure 13c Schematic diagram of the appliance body 101 including the first design amount ΔX1, the cavity S1 including the second design amount ΔX2, and the shell-shaped dental appliance 100 is not worn. Figure 13d for Figure 13c Schematic diagram of wearing the shell-shaped dental appliance 100 , the left side of the 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 attachment 10 .

[0169] 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.

[0170] That is to say, the first design quantity △X1 of the appliance body 101 can be regarded as the overall design quantity of the aforementioned digital appliance model 400, and the second design quantity △X2 of the cavity S1 can be regarded as the local design quantity formed between the aforementioned cavity S1 and the accessory 10. The second design quantity △X2 is the superposition of the first design quantity △X1 and the additional design quantity △Y, and can be regarded as the local design quantity including the additional design quantity △Y.

[0171] 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 appliance 100 is worn, there is approximately a 0.2 mm gap between the right side of the appliance body 101 and the tooth T, and the tooth as a whole appears to be translated to the right.

[0172] Unlike the prior art, without increasing the first design amount △X1 of the 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 appliance body 101 and the tooth T is only 0.2mm, the risk of misfit and debonding between the appliance body 101 and the tooth T can be effectively avoided.

[0173] That is to say, this embodiment enables the cavity S1 to have an additional additional design amount △Y by setting the cavity S1 and the accessory 10 to be mismatched. 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.

[0174] In other words, in this embodiment, the appliance body 101 includes a first design amount △X1, the cavity 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, and 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, the cavity S1 at this time has an auxiliary enhancement effect.

[0175] 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 magnitude of the design quantity.

[0176] Of course, in other embodiments, cavity S1 may also achieve other auxiliary correction effects.

[0177] For example, Figure 14The 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, the additional design amount △Y realizes auxiliary elongation.

[0178] That is to say, by setting different additional design amounts ΔY, the cavity S1 can produce different auxiliary correction effects, and the setting position and quantity of the additional design amount ΔY can be determined according to actual conditions.

[0179] Several specific embodiments of the dental assembly 200 are described below.

[0180] Combine Figure 15 and Figure 16 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 exerts force on the first action surface 11.

[0181] That is, 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 .

[0182] 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 ΔY.

[0183] Here, “the appliance body 101 has no design gap” means that when the shell-shaped dental appliance 100 is worn, there is no gap between the appliance body 101 and the tooth T. Figure 13b In addition, the additional design amount △Y corresponds to the force toward the first direction X, and the additional design amount △Y generated between the first action surface 11 and the second action surface S11 can achieve an auxiliary correction effect.

[0184] 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 and applies force to the first action surface 11, the maximum deformation D of the second action surface S11 in the opposite direction of the first direction X is in the range of 0.05mm-0.5mm, and the maximum deformation D is positively correlated with the additional design amount △Y.

[0185] That is, during the process of the second active surface S11 being coupled to the first active surface 11 , the second active surface S11 needs to be deformed. Generally, the deformation amounts of multiple regions of the second active surface S11 are different, and the additional design amount ΔY is determined by the maximum deformation amount.

[0186] It is understandable that the maximum deformation D needs to be set within a reasonable range. If the maximum deformation D is too small, no effective additional design amount △Y will be generated. If the maximum deformation D is too large, the elasticity requirement for the second active surface S11 will be relatively large, and there will be a risk of decoupling between the second active surface S11 and the first active surface 11. Therefore, in this embodiment, the range of the maximum deformation D is set to 0.05mm-0.5mm.

[0187] In this embodiment, the first active surface 11 and the second active surface S11 are both convex surfaces, and the average curvature of the first active surface 11 is greater than the average curvature of the second active surface S11.

[0188] That is, the second active surface S11 is flatter than the first active surface 11 , and the second active surface S11 is more easily deformed to match the first active surface 11 .

[0189] In this embodiment, combined with Figure 17 When the appliance 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 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.

[0190] 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.

[0191] Hereinafter, various examples of the additional design amount ΔY will be described, taking the first design amount ΔX1 in the mesial direction as an example.

[0192] Combine Figure 18 When the first direction X is the mesial direction, the second design amount △X2 is the sum of the first design amount △X1 and the additional design amount △Y, and the additional design amount △Y has a translation enhancement effect on the tooth movement.

[0193] Combine Figure 19 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. The additional design amount △Y has a translational weakening effect on the tooth movement.

[0194] Combine Figure 20When the first direction X forms an acute angle with the mesial direction and is biased toward 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 translational enhancement and auxiliary elongation on tooth movement.

[0195] Combine Figure 21 When the first direction X forms an acute angle with the mesial direction and deviates 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 tooth movement.

[0196] Combine Figure 22 When the first direction X forms an obtuse angle with the mesial direction and is biased toward 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.

[0197] Combine Figure 23 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 indentation on tooth movement.

[0198] Combine Figure 24 When the first direction X forms a right angle with the mesial direction and is directed toward the occlusal surface, the additional design amount △Y has an auxiliary extension effect on the tooth movement.

[0199] Combine Figure 25 When the first direction X forms a right angle with the mesial direction and is directed toward the gingival end, the additional design amount △Y has an auxiliary effect of lowering the tooth movement.

[0200] The first direction X in the above examples is in a plane substantially parallel to the buccal surface of the tooth T, but 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 setting position and shape of the first active surface 11.

[0201] Specifically, a mounting surface T1 is formed between the attachment 10 and the tooth T, and the first active surface 11 is adjacent to the mounting surface T1 , or the first active surface 11 is away from the mounting surface T1 .

[0202] That is to say, the first active surface 11 can be any area on the outer surface of the attachment 10 , and a suitable first active surface 11 can be selected in each correction step according to the required auxiliary correction effect.

[0203] For example, when the first active surface 11 is away from the mounting surface T1 and the first direction X is toward the buccal surface, the additional design amount ΔY can have the effect of assisting the rotation.

[0204] In addition, the above description is mainly based on the example of the accessory 10 including a first action surface 11, but is not limited thereto. Figure 26 The attachment 10 may include a plurality of first action surfaces 11, and the plurality of first action surfaces 11 may generate a plurality of additional design amounts △Y under the action of the plurality of second action surfaces S11, so as to produce diversified auxiliary corrections for the teeth.

[0205] Combine Figure 27 and Figure 28 , is a schematic diagram of a second embodiment of a dental assembly 200.

[0206] In this embodiment, when the cavity S1 is not worn on the accessory 10 and the cavity S1 and the accessory 10 are in the maximum overlapping state, there is an overlapping area V between the cavity S1 and the accessory 10, and the accessory 10 also includes a first independent area V1 protruding from the overlapping area V. The cavity S1 also includes a second independent area V2 protruding from the overlapping area V. When the cavity S1 is worn on the accessory 10, the overlapping area V of the cavity S1 is deformed and acts on the first independent area V1, and the cavity S1 drives the accessory 10 to move close to the second independent area V2.

[0207] Here, the cavity S1 is enclosed in an undeformed state to form a first three-dimensional space, and the accessory 10 forms a second three-dimensional space. "The cavity S1 is not worn to the accessory 10 and the cavity S1 and the 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.

[0208] 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.

[0209] In addition, "the accessory 10 also includes a first independent area V1 protruding from the overlapping area V" means that the accessory 10 is formed by splicing the first independent area V1 and the overlapping area V. In actual use, the accessory 10 may include multiple first independent areas V1. Here, the accessory 10 is taken as an example including one first independent area V1.

[0210] “The cavity S1 also includes a second independent area V2 protruding from the overlapping area V” means that the cavity S1 is formed by splicing the second independent area V2 and the overlapping area V. In actual application, the cavity S1 may include multiple second independent areas V2. Here, the example of the cavity S1 including one second independent area V2 is taken.

[0211] In this embodiment, when the cavity S1 is ready to be worn on the accessory 10, the first independent area V1 will block 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.

[0212] 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 sandwiched between the first action surface 11 and the second action surface S11 when the orthodontic device body 101 has no design amount and the first action surface 11 and the second action surface S11 are not matched with each other in the first embodiment.

[0213] Specific, combined Figure 29 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 ΔY.

[0214] Here, “the appliance body 101 has no design gap” means that when the shell-shaped dental appliance 100 is worn, there is no gap between the appliance body 101 and the tooth T. Figure 13b In addition, the additional design amount △Y corresponds to the force acting in the first direction X, and the additional design amount △Y generated between the cavity S1 and the first independent area V1 can achieve an auxiliary correction effect.

[0215] In this embodiment, the maximum width D of the first independent region V1 in the first direction X ranges from 0.05 mm to 0.5 mm, and the maximum width D is positively correlated with the additional design amount ΔY.

[0216] 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 opposite direction of the first direction X in the first embodiment. The description of the maximum width D can refer to the description of the maximum deformation D in the first embodiment, and will not be repeated here.

[0217] 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.

[0218] In order to ensure sufficient additional design volume △Y, the volume of the first independent area V1 is not less than 10*D 3 mm 3 .

[0219] In addition, it is also necessary to meet the requirements that the volume of the first independent area V1 is no more 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.

[0220] 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 accessory 10 and the inner wall of the second independent area V2 are always separated from each other.

[0221] 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.

[0222] 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 .

[0223] 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.

[0224] In addition, when the accessory 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 accessory 10 and the inner wall of the second independent region V2 are always separated from each other.

[0225] In this embodiment, combined with Figure 30 When the appliance body 101 includes the first design amount △X1 and the cavity S1 is worn on the accessory 10, the cavity S1 applies force to the first independent area V1 to generate the second design amount △X2, which is the superposition of the first design amount △X1 and the additional design amount △Y.

[0226] 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.

[0227] The first direction X of this embodiment can be freely selected according to actual conditions. For details, please refer to the additional design amount ΔY of various examples in the first embodiment.

[0228] Likewise, a mounting surface T1 is formed between the attachment 10 and the tooth T, and the first independent area V1 is connected to the mounting surface T1 , or the first independent area V1 and the mounting surface T1 are separated from each other.

[0229] 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.

[0230] In other embodiments, the auxiliary force-applying structure may also be other structures.

[0231] Combine Figure 31 The dental assembly 200' includes an attachment 10' for connecting to teeth and a shell-shaped dental instrument 100'.

[0232] The shell-shaped dental appliance 100 ′ includes an appliance body 101 ′ forming a cavity S′ for accommodating teeth and a traction buckle 20 ′ located on the outer surface of the appliance body 101 ′. The appliance body 101 ′ has a cavity S1 ′ matching the attachment 10 ′.

[0233] Here, the traction buckle 20 ′ serves as an auxiliary force-applying structure to generate an additional design amount ΔY.

[0234] The appliance body 101' of this embodiment cooperates with the accessory 10' and the traction buckle 20' at the same time. On the one hand, different traction forces can be generated by adjusting the adding position, traction direction, etc. of the traction buckle 20'. The traction force is applied to the teeth through the appliance body 101' to produce a specific correction effect; on the other hand, when there is a force between the cavity S1' and the accessory 10', the setting of the traction buckle 20' can achieve an auxiliary correction effect. Specifically, in certain correction steps, the traction force generated by the traction buckle 20' cooperates with the force of the accessory 10' to form a composite force. The composite force can realize the force adjustment of the teeth and the precise control of the tooth movement, thereby reducing the side effects or dislocation risks caused by the accessory 10'.

[0235] In addition, in response to the different needs of different correction steps, while the shape and position of the accessory 10' remain unchanged, the appliance body 101' with a specific traction buckle 20' can be used to achieve different auxiliary correction effects. Compared with replacing accessories, using different traction buckles 20' is more convenient and more personalized.

[0236] In summary, the present invention can effectively compensate for the deviation △N by adding an auxiliary force-applying structure to the digital orthodontic appliance model 400, so that the Nth correction step can effectively complete the actual design amount M. In other words, the setting of the auxiliary force-applying structure can achieve an auxiliary correction effect.

[0237] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0238] 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

1. A method for designing a dental component, characterized in that: The design method comprises the steps of: Add accessories to the digital dental model of step N according to the initial design; Obtaining the actual design volume of the digital appliance model of step N+L, where the digital appliance model of step N+L corresponds to the digital dental model of step N+L with accessories, where N and L are both integers not less than 1, and the accessories of step N+L are the same as those of step N; Obtaining a deviation between the actual design value and the initial design value; When the absolute value of the deviation is greater than a preset value, an auxiliary force-applying structure is added to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to compensate for the deviation; The step of "adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance model of steps N+1 to N+L to compensate for the deviation" specifically includes: An auxiliary force-applying structure is formed at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate an additional design amount, 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, the auxiliary force-applying structure is located in the mismatching area, and the cavity is a closed cavity; The step of "forming an auxiliary force-applying structure at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate an additional design amount" specifically includes: A first action surface located at the attachment and a second action surface located at the cavity are obtained at the mismatch area. When the digital appliance model has no 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 along the first direction to generate an additional design quantity.

2. The design method according to claim 1, characterized in that: The step of "adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance models from step N+1 to step N+L to compensate for the deviation when the absolute value of the deviation is greater than a preset value" specifically includes: Determining whether the absolute value of the deviation is greater than a preset value; If yes, then adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to compensate for the deviation; If not, continue to determine whether the actual design quantity of the digital appliance model in step N+L includes the additional design quantity; If yes, then adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate the additional design amount; If not, no auxiliary force-applying structure is added.

3. The design method according to claim 2, characterized in that: The additional design amount includes auxiliary mesial movement, auxiliary distal movement, auxiliary depression, auxiliary extension or auxiliary rotation.

4. The design method according to claim 1, characterized in that: The step of "adding an auxiliary force-applying structure to the digital appliance model of step N+L or at least a portion of the digital appliance model of steps N+1 to N+L to compensate for the deviation" specifically includes: An auxiliary force-applying structure is formed at the cavity of the corresponding accessory of the digital appliance model of the N+Lth step or at least part of the digital appliance model of the N+1th step to the N+Lth step to generate an additional design quantity, wherein the overall design quantity of the digital appliance model is different from the local design quantity formed between the cavity and the accessory, and the local design quantity includes the additional design quantity.

5. The design method according to claim 1, characterized in that: The step of "forming an auxiliary force-applying structure at the cavity of the corresponding accessory of the digital appliance model of step N+L or at least part of the digital appliance model of steps N+1 to N+L to generate an additional design amount" specifically includes: A first independent area located at the accessory is obtained at the mismatch area. When the digital appliance model has no design amount and the cavity is worn on the accessory, the cavity acts on the first independent area along a first direction to generate an additional design amount, wherein the first independent area is defined as the part of the accessory that protrudes 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.

6. The design method according to claim 5, characterized in that: The design method further includes: The maximum width of the first independent area in the first direction is set to be in a range of 0.05 mm to 0.5 mm.

7. The design method according to claim 5, characterized in that: The design method further includes: A second independent area is generated at the cavity, and the cavity drives the accessory to move close to the second independent area, wherein the second independent area is defined as the part of the cavity 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.

8. The design method according to claim 7, characterized in that: The design method further includes: The volume of the second independent area is set to be larger 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.

9. The design method according to claim 1, characterized in that: The step of "obtaining the deviation between the actual design quantity and the initial design quantity" specifically includes: Obtain a deviation angle between the resultant force direction of the actual design quantity and the resultant force direction of the initial design quantity.

10. The design method according to claim 1, characterized in that: The step of "adding accessories to the digital dental model of step N according to the initial design" specifically includes: Obtaining the spatial position of the Nth step and the spatial position of the N+Mth step of the digital dental model, where M is an integer not less than 1; Calculating the initial design quantity required to reach the spatial position of the Nth step from the spatial position of the Nth step, the initial design quantity including the translation quantity and the rotation quantity; Determine the shape and location of the accessories based on the initial design quantity; Add the attachment at the adding position.

11. The design method according to claim 10, characterized in that: The initial design amount is the main translation amount in the translation amounts.

12. The design method according to claim 1, characterized in that: The design method further includes: When the auxiliary force-applying structure is added to the digital appliance model of step N+1, the auxiliary force-applying structure is not added to the digital appliance model of step N+2.

13. A dental component, characterized in that The dental component is obtained by the design method of a dental component according to any one of claims 1-12.

14. A system for designing dental components, characterized in that The design system includes a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the computer program, the steps of the method for designing a dental component according to any one of claims 1 to 12 are implemented.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method for designing a dental component according to any one of claims 1 to 12 are implemented.

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