A method of orthodontic treatment and a system having the same

Abstract

The application is a directional orthodontic treatment method and a system thereof, comprising: obtaining a three-dimensional model of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in a treatment direction, and the first orthodontic tooth group and the second tooth group each include at least one tooth; determining a force receiving surface of the second tooth group away from the first orthodontic tooth group according to the treatment direction of the first orthodontic tooth group; determining a three-dimensional model deformation after treatment according to the treatment direction of the first orthodontic tooth group and the force receiving surface; establishing a tooth model after orthodontic treatment based on the three-dimensional model deformation, and increasing the translation thickening of the force receiving surface of the tooth in the second tooth group; fusing and connecting the shapes of the teeth to form an output tooth arrangement model; and outputting the tooth arrangement model to a manufacturing device. The application not only considers the mutual positional relationship of tooth arrangement, but also considers the tooth force and movement direction in orthodontic treatment, thereby improving the treatment efficiency and treatment effect of the invisible aligner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of digital oral technology of digital medical treatment, and particularly relates to a directional orthodontic treatment method and a system with the same. BACKGROUND

[0002] The invisible aligner is an important type of orthodontic appliance, which has many advantages such as beauty, comfort and good oral cleaning. More and more orthodontists and patients choose invisible aligners for orthodontic treatment. Almost all invisible aligners use the full wrapping of the dental surface, which uses the close-fitting dental surface to move the teeth.

[0003] However, the existing invisible aligner only emphasizes the final mutual position relationship of the teeth and does not consider the specific moving direction of the teeth. For example, in the process of moving the premolar distally, the gap between the first premolar and the canine increases, while the gap between the first molar and the second premolar decreases. For the invisible aligner from the first premolar to the second molar, the length is shortened, and the distal surface of the first and second molars is actually subjected to the force from the local shortening of the dental tray to the proximal direction, which is not expected by the orthodontist. This will cause the distally moved molar to move proximally, greatly reducing the efficiency of orthodontic treatment.

[0004] Therefore, there is an urgent need for a directional orthodontic treatment method to solve the problem that only the final mutual position relationship of the teeth is emphasized and the specific moving direction of the teeth is not considered, thereby causing low efficiency of orthodontic treatment. SUMMARY

[0005] The purpose of the present application is to provide a directional orthodontic treatment method, which can solve the problem that only the final mutual position relationship of the teeth is emphasized and the specific moving direction of the teeth is not considered, thereby causing low efficiency of orthodontic treatment.

[0006] The first aspect of the present application provides a directional orthodontic treatment method, which comprises:

[0007] obtaining a three-dimensional model of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in the treatment direction, and the first orthodontic tooth group and the second tooth group each comprise at least one tooth;

[0008] determining a force receiving surface of the second tooth group away from the first orthodontic tooth group according to the treatment direction of the first orthodontic tooth group, wherein the force receiving surface represents a surface of the second tooth group subjected to the traction of the first orthodontic tooth group and subjected to the tension force if the first orthodontic tooth group and the second tooth group are provided with a dental tray during the orthodontic treatment of the first orthodontic tooth group;

[0009] determining a deformation of the three-dimensional model after treatment according to the treatment direction of the first orthodontic tooth group and the force receiving surface;

[0010] establishing a tooth model after orthodontic treatment based on the deformation of the three-dimensional model, and increasing the translation and thickening of the force receiving surface of the second tooth group;

[0011] fusing the shapes of the individual teeth to form an output dentition model;

[0012] outputting the dentition model to a manufacturing device.

[0013] In an implementable manner, the step of obtaining three-dimensional models of the first orthodontic tooth group and the second tooth group comprises:

[0014] obtaining the three-dimensional models of the first orthodontic tooth group and the second tooth group by intraoral scanning or external scanning of silicone rubber or plaster models.

[0015] In an implementable manner, the step of determining that the second tooth group is away from the force receiving surface of the first orthodontic tooth group according to the treatment direction of the first orthodontic tooth group comprises:

[0016] obtaining the direction of tooth movement and marking it as direction A;

[0017] based on the direction of tooth movement, the tooth and the adjacent tooth will generate a centrifugal force or a centripetal force, and the centrifugal force or the centripetal force is marked as direction B, wherein the centrifugal force represents an increase in the gap, and the tooth and the adjacent tooth are judged to be subjected to the centrifugal force generated by the increase in the gap position, and the centripetal force represents a decrease in the gap, and the tooth and the adjacent tooth are judged to be subjected to the centripetal force generated by the decrease in the gap position;

[0018] determining the direction of tooth movement and the force to be borne according to direction A and direction B.

[0019] In an implementable manner, the step of determining a deformation of the three-dimensional model after treatment according to the treatment direction of the first orthodontic tooth group and the force receiving surface comprises:

[0020] if the direction A and the direction B of the first orthodontic tooth group are in the same direction, mark 0;

[0021] if the direction A and the direction B of the second tooth group are in opposite directions, mark 1;

[0022] determining the deformation of the three-dimensional model according to the mark 0 and the mark 1.

[0023] In an implementable manner, the step of establishing the orthodontic tooth model based on the three-dimensional model deformation amount and increasing the translation thickening of the stress surface of the tooth in the second tooth group comprises:

[0024] Setting a reference value of the stress surface subjected to tension;

[0025] Based on the reference value, the translation thickness of the stress surface is increased or decreased.

[0026] In an implementable manner, the step of fusing the shapes of the individual teeth to form an output tooth model comprises:

[0027] According to the tooth thickness of the stress surface of the second tooth group, the tooth is translationally thickened, wherein the translationally thickened includes the thickness of the mouthpiece and the thickness of the adhesive accessory.

[0028] In an implementable manner, the step of outputting the tooth model to a manufacturing device to manufacture a finished mouthpiece comprises:

[0029] The manufacturing device performs model printing, film pressing or three-dimensional printing according to the tooth model to manufacture a finished mouthpiece.

[0030] The second aspect of the present application provides an electronic device, comprising a bus, a transceiver, a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the transceiver, the memory and the processor are connected through the bus, and the computer program is executed by the processor to realize the steps of the directional orthodontic treatment method.

[0031] The third aspect of the present application provides a computer readable storage medium, which stores a computer program, wherein the computer program is executed by a processor to realize the steps of the directional orthodontic treatment method.

[0032] The fourth aspect of the present application provides a prediction system applied to the directional orthodontic treatment method, comprising:

[0033] An acquisition unit is configured to acquire three-dimensional models of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in a treatment direction, and the first orthodontic tooth group and the second tooth group each include at least one tooth;

[0034] The first computing unit is configured to determine a force receiving surface of the second tooth group away from the first orthodontic tooth group according to a correction direction of the first orthodontic tooth group, wherein the force receiving surface represents a surface of the second tooth group receiving a pulling force from the first orthodontic tooth group if the first orthodontic tooth group and the second tooth group are provided with braces during the correction of the first orthodontic tooth group;

[0035] The second computing unit is configured to determine a deformation of the three-dimensional model after correction according to the correction direction of the first orthodontic tooth group and the force receiving surface.

[0036] The establishing unit is configured to establish a tooth model after orthodontic treatment based on the deformation of the three-dimensional model, and increase the translation and thickening of the force receiving surface of the teeth in the second tooth group.

[0037] The fusion unit is configured to fuse and connect the shapes of the teeth to form an output dentition model.

[0038] The output unit is configured to output the dentition model to a manufacturing device.

[0039] The present application has the following advantages:

[0040] The first orthodontic tooth group to be orthodontically treated and the second tooth group adjacent to the first orthodontic tooth group in the correction direction of the first orthodontic tooth group are obtained, the force receiving surface of the second tooth group away from the first orthodontic tooth group is determined according to the correction direction of the first orthodontic tooth group, the deformation of the three-dimensional model after correction is determined based on the correction direction of the first orthodontic tooth group and the force receiving surface, the tooth model after orthodontic treatment is established according to the deformation of the three-dimensional model, and the translation and thickening of the force receiving surface of the teeth in the second tooth group are increased. The shapes of the teeth are fused and connected to form an output dentition model, and the dentition model is output to a manufacturing device. When the manufacturing device receives the dentition model, model printing and film pressing or three-dimensional printing processing can be performed. Not only the relative position relationship of the teeth is considered, but also the force and movement direction of the teeth during orthodontic treatment, so that the correction efficiency and treatment effect of the invisible aligner are improved, and the indications are expanded. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0042] Figure 1 It is a schematic diagram of the commonly used invisible aligner process, wherein the horizontal lines in the figure are used to facilitate the observation of the changes of a, b, c, d and e;

[0043] Figure 2 Contrastive diagram of interproximal space change in distal movement of premolar;

[0044] Figure 3 Actual force of existing full-bonding appliance on premolar and molar in distal movement of premolar, wherein the arrow direction in the figure is the direction of force acting on the tooth;

[0045] Figure 4 Flowchart of the directionality orthodontic treatment method of the present application;

[0046] Figure 5 Flowchart of the directionality orthodontic treatment method of the present application for obtaining the tooth stress surface;

[0047] Figure 6 Schematic diagram of the tooth movement direction A and the centripetal direction B of the directionality orthodontic treatment method of the present application;

[0048] Figure 7 Flowchart of the directionality orthodontic treatment method of the present application for marking 0 and marking 1;

[0049] Figure 8 Schematic diagram of the directionality orthodontic treatment method of the present application for marking 0 and marking 1;

[0050] Figure 9 Flowchart of the directionality orthodontic treatment method of the present application for outputting the dental arch model;

[0051] Figure 10 Flowchart of the directionality orthodontic treatment method of the present application for fusing and connecting the shapes of the individual teeth;

[0052] Figure 11 Flowchart of the directionality orthodontic treatment method of the present application for outputting to the device;

[0053] Figure 12 Embodiment schematic diagram of the directionality orthodontic treatment method of the present application. DETAILED DESCRIPTION

[0054] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0055] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, "a plurality of" means two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0057] The invisible aligner guides the movement of the teeth by the tooth sleeve made of elastic film material. The invisible aligner is relatively narrow compared to the fixed aligner bonded to the tooth surface, mainly due to the limitations of its material and force application method. The invisible aligner adopts the full wrapping of the tooth surface, and uses the close-fitting method of the tooth surface to make the tooth move. The invisible aligner only emphasizes the final mutual position relationship of the teeth, and often ignores that the movement of the teeth has a direction, and how the teeth reach the final mutual position relationship through the movement method is crucial to the success of orthodontic treatment. For example, in the case of pushing the molars backward, the commonly used invisible aligner process is to first move the first and second molars distally, such as a and b in Figure 1 , and after the two molars reach the final position, the first and second premolars are moved distally, such as c in Figure 1 , and after the two premolars are in place and in contact with the molars, the remaining front teeth are retracted or aligned, such as d in Figure 1 , and e in Figure 1 .

[0058] In actual clinical work, after the molars are pushed into place, a gap is generated between the first molar and the second premolar. During the distal movement of the premolar, the gap between the first premolar and the canine increases, and the gap between the first molar and the second premolar decreases, such as Figure 2.

[0059] As Figure 3 shown, for the aligner from the first premolar to the second molar segment, its length is shortened, and the first and second molar distal surfaces are actually subjected to the mesial force from the local shortening of the mouthpiece, which is not expected by the orthodontist. This force will cause the distally moved molar to move mesially, greatly reducing the efficiency of orthodontic treatment.

[0060] For example, in the common tooth extraction case of removing the first premolar, when using fixed appliances for treatment, the orthodontist can achieve more anterior teeth retraction or posterior teeth retraction by flexible adjustment and control of the anchorage. When using implant anchorage to move only the anterior teeth posteriorly, the posterior teeth can be completely moved anteriorly. However, in the case of aligners, whether the orthodontist wants to move the anterior teeth posteriorly or the posterior teeth anteriorly, the appearance of the aligner is a reduction in the gap at the first premolar, i.e. the shortening of the length of the mouthpiece. It is impossible to prevent some teeth from being affected by the shortening of the length of the mouthpiece even if additional force or anchorage is used.

[0061] This is because the existing aligner only considers the mutual position relationship after each step of tooth movement, and cannot distinguish the direction of the force applied to each tooth.

[0062] Based on the above reasons, the present application is a directional orthodontic treatment method for generating an aligner by combining the mutual position of teeth and the direction of orthodontic force required by different teeth.

[0063] As Figure 4 shown, the first aspect of the present application provides a directional orthodontic treatment method, comprising:

[0064] S100: Obtain a three-dimensional model of a first orthodontic tooth group and a second tooth group.

[0065] Among them, the second tooth group represents the tooth group adjacent to the first orthodontic tooth group in the treatment direction, and the first orthodontic tooth group and the second tooth group each include at least one tooth.

[0066] According to the teeth that need to be corrected by the patient, the first orthodontic tooth group is established; then according to the adjacent second tooth group in the correction direction of the teeth that need to be corrected by the patient. Next, a three-dimensional model is established according to the teeth obtained from the patient.

[0067] It should be noted that the three-dimensional model can be established by intraoral scanning or external scanning of a silicone rubber or plaster model. After scanning, a three-dimensional model is established according to the scanning results.

[0068] It can be understood that the orthodontic correction needs to be fitted with not only the first orthodontic tooth group and the second tooth group, but also other teeth adjacent to the first orthodontic tooth group. Therefore, after the cone beam CT scans the teeth of the patient, the three-dimensional model established in the model includes not only the first orthodontic tooth group and the second tooth group, but also other teeth adjacent to the first orthodontic tooth group that can be used in the orthodontic process.

[0069] It should also be noted that the cone beam CT scans the teeth of the patient is only an example, and other methods that can scan the teeth of the patient and establish a three-dimensional model based on the scanned results can also be used, and the present embodiment is not limited thereto.

[0070] S200: According to the correction direction of the first orthodontic tooth group, determine the force receiving surface of the second tooth group away from the first orthodontic tooth group.

[0071] Wherein, the force receiving surface represents the surface of the second tooth group receiving the traction of the first orthodontic tooth group and bearing the tension force under the condition that the first orthodontic tooth group and the second tooth group are fitted with braces during the correction process of the first orthodontic tooth group.

[0072] As shown in Figure 5 , specifically, the force receiving surface includes steps S201 to S203:

[0073] S201: Obtain the direction of tooth movement and mark it as direction A.

[0074] As shown in Figure 6 , wherein the movement direction of the tooth needs to be determined during the orthodontic correction process, and the movement of the tooth can be divided into two kinds, one of which is the movement of the tooth to the correction direction, and the other is the tooth without movement. For teeth that need to move and teeth that do not need to move, both are marked as A.

[0075] As shown in Figure 6 , A can move or not, such as the A at the dot is in a stationary state, and the A with an arrow is the direction of tooth movement.

[0076] It can be understood that the two aforementioned teeth are relative to the teeth to be corrected and the teeth associated with the teeth to be corrected. For example, the first orthodontic tooth group and the second tooth group, the first orthodontic tooth group is moved to the correction direction, and the second tooth group does not need to move.

[0077] S202: Based on the direction of tooth movement, the tooth and the adjacent tooth will generate a centrifugal force or a centripetal force, and the centrifugal force or the centripetal force is marked as direction B.

[0078] Wherein, the centrifugal direction force represents the gap increase, the tooth and the adjacent tooth are judged to be subjected to the centrifugal force generated by the gap position increase, the centripetal direction force represents the gap reduction, the tooth and the adjacent tooth are judged to be subjected to the centripetal force generated by the gap position reduction.

[0079] Need to be explained is that in the process of increasing or reducing the gap between the first orthodontic tooth group and the adjacent tooth, the force direction of the tooth around the first orthodontic tooth group needs to be judged. Specifically, the gap between the first orthodontic tooth group and the second tooth group is reduced, that is, the centripetal direction force. Conversely, the gap between the tooth opposite to the first orthodontic tooth group and the first orthodontic tooth group is newly generated or increased, such as the second tooth group and the adjacent tooth along the first orthodontic tooth group correction direction.

[0080] It can be understood that when the second tooth group is the second molar, although the second molar does not need to be moved, if the second molar is brought with the mouthpiece, a pulling force will be generated on the second molar, and this pulling force will make the second molar and the third molar form a centrifugal direction force.

[0081] S203: Determine the tooth movement direction and the force borne according to the direction A and the direction B.

[0082] As shown in Figure 6 , wherein the force borne by the first orthodontic tooth group is direction A and direction B respectively, and direction A and direction B are in the same direction; the force borne by the second tooth group is direction A and direction B respectively, and direction A and direction B are in opposite directions.

[0083] In this embodiment, the force borne by the tooth is analyzed by using the movement direction of the tooth, so as to make the appliance in the subsequent action according to the force borne by the tooth.

[0084] S300: Determine the deformation amount of the three-dimensional model after correction according to the correction direction of the first orthodontic tooth group and the force bearing surface.

[0085] Wherein, the force borne by the first orthodontic tooth group and the second tooth group in the process of correction of the first orthodontic tooth group has been analyzed in the foregoing steps.

[0086] As shown in Figure 7 , specifically, the force borne by the first orthodontic tooth group and the second tooth group is further analyzed according to steps S301 to S303.

[0087] S301: If the direction A and the direction B of the first orthodontic tooth group are in the same direction, mark 0.

[0088] S302: If the direction A and the direction B of the second tooth group are in opposite directions, mark 1.

[0089] The teeth of the three-dimensional model are marked according to S301 and S302.

[0090] S303: Determine the deformation of the three-dimensional model according to the mark 0 and the mark 1.

[0091] As shown in Figure 8 , the three-dimensional model can determine the direction of deformation required for tooth correction according to the mark 0 and the mark 1, thereby determining the deformation of the three-dimensional model.

[0092] In this embodiment, the teeth in the three-dimensional model are marked with different marks, the three-dimensional model determines the stress direction of tooth correction according to the content of the mark, and then determines the direction of deformation required in the tooth correction process, and based on the direction of tooth correction, the deformation of the three-dimensional model is determined, so that in the subsequent action, the shape of the dental model is determined according to the deformation of the three-dimensional model.

[0093] S400: Based on the deformation amount of the three-dimensional model, establish the tooth model after orthodontic treatment, and increase the translation thickness of the stress surface of the second tooth group.

[0094] Among them, the shape of each tooth after deformation is obtained according to the deformation amount of the three-dimensional model, and then the output dental model is formed according to the shape of the tooth.

[0095] As shown in Figure 9 , specifically, the output dental model includes steps S401 and S402:

[0096] S401: Set the reference value of the stress surface to bear the tension.

[0097] Among them, the stress surface not only includes the surface of the second tooth group away from the first orthodontic tooth group, but also includes the opposite two side surfaces, that is, in addition to the surface adjacent to the first orthodontic tooth group, other surfaces of the second tooth group will be subjected to different degrees of tension (for the convenience of understanding, the tooth is understood as a rectangle, the rectangle has two opposite side surfaces, and the surface away from the first orthodontic tooth group and the surface close to the first orthodontic tooth group, a total of four surfaces. The actual tooth may have multiple surfaces. Here, for the convenience of understanding and simplifying the description, the tooth is understood as four surfaces. It should be noted that the surface of the actual tooth may have uneven conditions and need to be judged specifically).

[0098] Since there are multiple stress surfaces of the second tooth group, and the tension (tension as described above) of each surface is not the same, a reference value needs to be set as a reference to judge the stress of the stress surface.

[0099] S402: Increase or decrease the translation thickness of the stress surface based on the reference value.

[0100] Wherein, according to the set reference value, the translation thickness of the stress surface is judged, and the reference value is 10N, for example, and the thickness of the mouthguard is a set value, and the stress surface of the second tooth group is less than 10N, and the thickness of the mouthguard is less than the set value, and vice versa.

[0101] According to the reference value and the stress of the stress surface of the second tooth group, the thickness of the mouthguard at the corresponding position of the second tooth group is calculated, for example, the reference value is 10N, and the thickness of the mouthguard is 1, and the calculated thickness of the mouthguard at the corresponding position of the second tooth group is 0.8, 0.9, 1, 1.1, 1.2, etc., such as 0.8, 0.9, 1.1, 1.2, which forms the translation of the thickness of the mouthguard, i.e. the translation thickness.

[0102] S500: fuse the shapes of the teeth to form an output dentition model.

[0103] Wherein, the shapes of the teeth required for cooperation of the first orthodontic tooth group in the correction process are obtained, and the output dentition model is formed according to the obtained shapes of the teeth.

[0104] As shown in Figure 10 , specifically, the fusion of the shapes of the teeth includes step S501.

[0105] S501: according to the thickness of the teeth of the stress surface of the second tooth group, the teeth are translated and thickened, wherein the translation and thickening includes the thickness of the mouthguard and the thickness of the adhesive accessory.

[0106] Wherein, after the translation thickness of the mouthguard is obtained in the foregoing steps, the translation thickness can be used as the total thickness, and on this basis, the adhesive accessory such as the patch is pasted, and the thickness of the patch and the thickness of the mouthguard are added to obtain the translation thickness.

[0107] It should be noted that in order to facilitate processing, the thinnest position in the translation thickness can be selected, such as the 0.8 thickness position, to make the mouthguard, and the patches such as 0.9, 1, 1.1, 1.2, etc. are added to make the thickness of the corresponding position reach the translation thickness.

[0108] S600: output the dentition model to a manufacturing device.

[0109] As shown in Figure 11 , wherein outputting to the device includes step S601.

[0110] S601: the manufacturing device performs model printing, film pressing or three-dimensional printing according to the dentition model to make a finished mouthguard.

[0111] Wherein, the dentition model is obtained in the foregoing steps, and the entity is made according to the dentition model, and the mouthguard is made based on the entity dentition model.

[0112] The model can be made by printing, embossing or three-dimensional printing, and the embodiment is not limited.

[0113] In summary, the directional orthodontic treatment method has the following advantages:

[0114] 1. The shape of the three-dimensional model of the tooth row for processing the generated invisible aligner is changed according to the tooth stress.

[0115] 2. When the invisible aligner generated according to the technical route acts in the patient's mouth, only the tooth surface and accessories that need to be stressed are in contact with the aligner, and the tooth surface and accessories that do not need to be stressed are not in contact with the aligner.

[0116] 3. The three-dimensional model deformation and subsequent production and processing performed by the technical route do not need to establish a new production and manufacturing process, and the feasibility is very high and the cost is very low.

[0117] Embodiment

[0118] Step 1: The orthodontist's tooth movement plan for a certain invisible aligner orthodontic case is: the upper first and second molars are moved 3mm distally, then the first and second premolars are moved 3mm distally, and finally the upper remaining anterior teeth are retracted.

[0119] Step 2: According to the plan, the process of creating and eliminating gaps during tooth movement is: when the upper first and second molars are moved distally, a 3mm gap is created between the second premolar and the first molar; when the first and second premolars are moved distally, the gap between the second premolar and the first molar gradually decreases, and a 3mm gap is gradually created between the canine and the first premolar; when the upper remaining anterior teeth are retracted, all gaps in the dental arch gradually disappear.

[0120] Step 3: Deformation of the three-dimensional model of the teeth: when the first and second premolars are moved distally, the direction A of the first and second molars is stationary. As the gap between the second premolar and the first molar gradually decreases, the direction B of the first and second molars is towards the proximal. As shown in FIG. 1c, the direction B of the first and second molars is towards the distal. Therefore, the deformation direction B' of the three-dimensional model of the first and second molars is towards the distal. The three-dimensional surface of the first and second molars, all surfaces facing direction B are translated and thickened in the opposite direction B'. Figure 12

[0121] Step 4: After all the teeth are deformed, the shapes of the individual teeth are fused and connected to form an output tooth row model.

[0122] Step 5: As shown in FIG. 1d, the tooth row model output in step 4 is output to an external device for model printing, embossing or three-dimensional printing to form an aligner. Figure 12

[0123] ​​The second aspect of the present application provides an electronic device, comprising a bus, a transceiver, a memory, a processor and a computer program stored in the memory and executable on the processor, the transceiver, the memory and the processor being connected through the bus, characterized in that the computer program, when executed by the processor, implements the steps of the directional orthodontic treatment method as described above.

[0124] The third aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, characterized in that the computer program, when executed by a processor, implements the steps of the directional orthodontic treatment method as described above.

[0125] The fourth aspect of the present application provides a prediction system applied to the directional orthodontic treatment method as described above, comprising:

[0126] An acquisition unit is configured to acquire a three-dimensional model of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in a treatment direction, and the first orthodontic tooth group and the second tooth group each include at least one tooth;

[0127] A first calculation unit is configured to determine, according to a treatment direction of the first orthodontic tooth group, a force receiving surface of the second tooth group away from the first orthodontic tooth group, wherein the force receiving surface represents a surface of the second tooth group subjected to a pulling force by the first orthodontic tooth group if the first orthodontic tooth group and the second tooth group are fitted with a dental brace during the orthodontic treatment of the first orthodontic tooth group;

[0128] A second calculation unit is configured to determine, according to the treatment direction of the first orthodontic tooth group and the force receiving surface, a deformation amount of the three-dimensional model after treatment;

[0129] A building unit is configured to build a tooth model after orthodontic treatment based on the deformation amount of the three-dimensional model, and to increase a translation and thickening of the force receiving surface of the tooth in the second tooth group;

[0130] A fusion unit is configured to fuse and connect the shapes of the teeth to form an output dentition model;

[0131] An output unit is configured to output the dentition model to a manufacturing device.

[0132] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent replacements to some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of directional orthodontic treatment, characterized by, The method comprises: obtaining a three-dimensional model of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in the correction direction of the first orthodontic tooth group, and the first orthodontic tooth group and the second tooth group each comprise at least one tooth; determining a force receiving surface of the second tooth group away from the first orthodontic tooth group according to the correction direction of the first orthodontic tooth group, wherein the force receiving surface represents a surface of the second tooth group subjected to a pulling force from the first orthodontic tooth group if the first orthodontic tooth group and the second tooth group are fitted with a dental brace during the correction of the first orthodontic tooth group; determining a deformation amount of the three-dimensional model after correction according to the correction direction of the first orthodontic tooth group and the force receiving surface; establishing a tooth model after orthodontic treatment based on the deformation amount of the three-dimensional model, and forming a dentition model according to the tooth shape, and adjusting the translation and thickening of the force receiving surface of the tooth in the second tooth group in the dentition model, and increasing the translation and thickening of the force receiving surface of the tooth in the second tooth group; fusing and connecting the tooth shapes to form an output dentition model; outputting the dentition model to a manufacturing device; wherein the step of establishing a tooth model after orthodontic treatment based on the deformation amount of the three-dimensional model and increasing the translation and thickening of the force receiving surface of the tooth in the second tooth group comprises: setting a reference value of the pulling force borne by the force receiving surface; increasing or decreasing the translation and thickness of the force receiving surface based on the reference value; the step of fusing and connecting the tooth shapes to form an output dentition model comprises: translating and thickening the tooth according to the tooth thickness of the force receiving surface of the second tooth group, wherein the translation and thickening includes the thickness of the tooth model and the thickness of the adhesive accessory; the step of outputting the dentition model to the manufacturing device to manufacture a finished dental brace comprises: the manufacturing device performs model printing and film pressing or three-dimensional printing according to the dentition model to manufacture a finished dental brace.

2. The method of claim 1, wherein the method is a method of orthodontic treatment. the step of obtaining a three-dimensional model of a first orthodontic tooth group and a second tooth group comprises: obtaining the three-dimensional model by scanning the first orthodontic tooth group and the second tooth group in the mouth or by scanning the first orthodontic tooth group and the second tooth group using silicon rubber or plaster model external scanning.

3. The method of claim 1, wherein the method is a method of orthodontic treatment. the step of determining a force receiving surface of the second tooth group away from the first orthodontic tooth group according to the correction direction of the first orthodontic tooth group comprises: obtaining the direction of tooth movement and marking it as direction A; based on the direction of tooth movement, the tooth and the adjacent tooth will generate a centrifugal force or a centripetal force, and the centrifugal force or the centripetal force is marked as direction B, wherein the centrifugal force represents an increase in the gap, and the tooth and the adjacent tooth are judged to be subjected to the centrifugal force generated by the increase in the gap position, and the centripetal force represents a decrease in the gap, and the tooth and the adjacent tooth are judged to be subjected to the centripetal force generated by the decrease in the gap position; determining the direction of tooth movement and the force borne according to direction A and direction B.

4. The method of claim 3, wherein the method further comprises: the step of determining a deformation amount of the three-dimensional model after correction according to the correction direction of the first orthodontic tooth group and the force receiving surface comprises: If the directions A and B of the first orthodontic tooth group are in the same direction, marked as 0; If the directions A and B of the second tooth group are in opposite directions, marked as 1; According to the mark 0 and the mark 1, determine the deformation of the three-dimensional model.

5. An electronic device comprising a bus, a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the transceiver, the memory and the processor being connected by the bus, characterized in that, The computer program is executed by the processor to realize the steps in the directional orthodontic treatment method according to any one of claims 1 to 4.

6. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to realize the steps in the directional orthodontic treatment method according to any one of claims 1 to 4.

7. A prediction system characterized by, The method is applied to the directional orthodontic treatment method according to any one of claims 1 to 4, comprising: An acquisition unit is configured to acquire three-dimensional models of a first orthodontic tooth group and a second tooth group, wherein the second tooth group represents a tooth group adjacent to the first orthodontic tooth group in a treatment direction, and the first orthodontic tooth group and the second tooth group each include at least one tooth; A first calculation unit is configured to determine, according to a treatment direction of the first orthodontic tooth group, a force receiving surface of the second tooth group away from the first orthodontic tooth group, wherein the force receiving surface represents a surface of the second tooth group subjected to a pulling force by the first orthodontic tooth group if the first orthodontic tooth group and the second tooth group are fitted with a dental brace during the orthodontic treatment of the first orthodontic tooth group; A second calculation unit is configured to determine, according to the treatment direction of the first orthodontic tooth group and the force receiving surface, a deformation amount of the three-dimensional model after treatment; An establishment unit is configured to establish a tooth model after orthodontic treatment based on the deformation amount of the three-dimensional model, and increase the translation and thickening of the force receiving surface of the tooth in the second tooth group; A fusion unit is configured to fuse and connect the shapes of the teeth to form an output tooth arrangement model; An output unit is configured to output the tooth arrangement model to a manufacturing device.

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