Method for generating edge cutting lines of orthodontic aligner, orthodontic aligner, and readable medium

Abstract

Disclosed in the present application are a method for generating edge cutting lines of an orthodontic aligner, an orthodontic aligner, and a readable medium, and the present application relates to the technical field of dental orthodontics. The generation method comprises: identifying a tooth contour of a tooth model corresponding to at least one first tooth and acquiring a first region corresponding to the tooth contour; determining a second region corresponding to an auxiliary, wherein the auxiliary is at least partially located on an orthodontic aligner corresponding to at least part of the tooth or a tooth gap of the at least one first tooth, and the orthodontic aligner is related to the tooth model; and generating edge cutting lines of the orthodontic aligner according to the second region when the first region cannot completely cover the second region, wherein the edge cutting lines of the orthodontic aligner are used for cutting the orthodontic aligner. By means of the configuration, the finally cut orthodontic aligner is provided with enough space for attaching auxiliaries, thereby improving the success rate of auxiliary attachment on the orthodontic aligner and enabling the auxiliaries to better cooperate with the orthodontic aligner in teeth alignment.

Description

Method for generating edge cutting line of orthodontic appliance, orthodontic appliance and readable medium

[0001] This application claims priority to a Chinese patent application filed on December 29, 2023, with application number 202311871847.2 and application name “Method for generating edge cutting lines of orthodontic appliances, orthodontic appliances and readable medium”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present application relates to the technical field of dental orthodontics, and in particular to a method for generating an edge cutting line of an orthodontic appliance, an orthodontic appliance, and a readable medium. Background Art

[0003] Current braces work by wrapping around the crowns and providing retention. However, in order to achieve the desired effect during invisible tooth correction, various accessories are often required. Adding accessories to the braces requires a specific area, typically the buccal, lingual, or maxillofacial surfaces. Most accessories are added to the buccal and lingual surfaces, but the area available for attachment is often limited to the area formed by the edge of the braces and the incisal edge of the maxillofacial area, potentially preventing the desired treatment effect. Summary of the Invention

[0004] The technical problem to be solved by this application is how to improve the success rate of adding accessories to the braces, and to provide a method for generating a cutting line on the edge of the braces, a braces, and a readable medium. This application solves the above technical problem through the following technical solutions:

[0005] The present application provides a method for generating an edge cutting line of an orthodontic appliance, comprising:

[0006] Identify the tooth contour of the tooth model corresponding to at least one first tooth and obtain a first area corresponding to the tooth contour; determine a second area corresponding to an attachment, where the attachment is at least partially located on an appliance corresponding to at least a portion of the tooth or tooth gap of at least one of the first teeth, and the appliance is related to the tooth model; when the first area cannot completely cover the second area, generate an appliance edge cutting line based on the second area, and the appliance edge cutting line is used to cut the appliance.

[0007] In this solution, by comparing the acquired first area with the second area, the generation basis of the edge cutting line of the braces can be determined according to the comparison result, so that the edge cutting of the braces is more flexible and can adapt to various types of accessories. When the first area cannot completely cover the second area, the edge cutting line of the braces is directly generated according to the second area, so that the braces finally cut has enough space to add accessories, which improves the success rate of adding accessories to the braces, and thus the accessories can better cooperate with the braces to correct the teeth.

[0008] In a possible implementation, the edge cutting line of the appliance satisfies at least one of the following:

[0009] At least a portion of the appliance edge cutting line is located below the first gum line;

[0010] At least a portion of the cutting line of the edge of the appliance intersects the first gum line;

[0011] the second region being at least partially below the first gum line;

[0012] The second region at least partially intersects the first gum line;

[0013] The first gum line includes the gum line of at least one of the first teeth and / or at least a portion of the gum line of at least one tooth adjacent to the at least one first tooth.

[0014] A possible implementation also includes:

[0015] When there is occlusal interference between the attachment and the opposing tooth of the first tooth, the position of the attachment on the orthodontic appliance is adjusted to a first position.

[0016] One possible implementation method is that before adjusting the position of the accessory on the orthodontic appliance to the first position, the accessory is at a second position on the orthodontic appliance, where the second position is the position of the accessory when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0017] In a possible implementation, the priority of the first position is lower than or equal to the priority of the second position.

[0018] In a possible implementation, the priority of the location of the accessory is related to the function information of the accessory.

[0019] A possible implementation also includes:

[0020] When there is occlusal interference between the attachment and the opposing tooth of the first tooth, the position of the attachment on the orthodontic appliance is adjusted in a direction toward the gum edge.

[0021] A possible implementation method, before generating the edge cutting line of the orthodontic appliance, further includes: there is no occlusal interference between the attachment and the opposing tooth of the first tooth.

[0022] In a possible implementation, the appliance edge cutting line is determined at a preset distance based on position information of the second area.

[0023] In a possible implementation, the preset distance ranges from 0.2 mm to 2 mm.

[0024] In a possible implementation, the edge cutting line of the orthodontic appliance extends along a first direction of the first tooth and covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

[0025] A possible implementation also includes:

[0026] displaying at least a portion of the tooth model;

[0027] At least one of the appliance edge cutting line, the attachment, and the appliance is displayed.

[0028] A possible implementation also includes:

[0029] Obtaining a first instruction from a user, where the first instruction is used to indicate desired position information of the attachment or desired position information of an edge of an orthodontic appliance;

[0030] Generating an appliance edge cutting line according to the second area includes generating a first cutting line according to the first instruction and the second area.

[0031] A possible implementation also includes:

[0032] In response to a second instruction from the user, the generated first cutting line is adjusted to a second cutting line, where the second instruction is used to indicate adjustment information of the first cutting line, and the second cutting line is used to generate a target appliance.

[0033] In one possible implementation, the second instruction is used to indicate at least one of the following:

[0034] Updating the location information of the attachment;

[0035] The target position of the first cutting line is adjusted.

[0036] The present application also provides a method for generating an edge cutting line of an orthodontic appliance, comprising:

[0037] obtaining a tooth model corresponding to at least one first tooth;

[0038] In response to a first instruction from the user and the tooth model, determining a second area corresponding to the attachment, wherein the attachment is at least partially located on the appliance corresponding to at least a portion of the tooth or the interdental space of at least one of the first teeth; the first instruction is used to indicate position information of the attachment;

[0039] An appliance edge cutting line is generated based on the second area.

[0040] In a possible implementation, the edge cutting line of the appliance satisfies at least one of the following:

[0041] At least a portion of the appliance edge cutting line is located below the first gum line;

[0042] At least a portion of the cutting line of the edge of the appliance intersects the first gum line;

[0043] the second region being at least partially below the first gum line;

[0044] The second region at least partially intersects the first gum line;

[0045] The first gum line includes the gum line of at least one of the first teeth and / or at least a portion of the gum line of at least one tooth adjacent to the at least one first tooth.

[0046] A possible implementation method also includes:

[0047] When there is occlusal interference between the attachment and the opposing tooth of the first tooth, the position of the attachment on the orthodontic appliance is adjusted to a first position.

[0048] One possible implementation method is that before adjusting the position of the accessory on the orthodontic appliance to the first position, the accessory is at a second position on the orthodontic appliance, where the second position is the position of the accessory when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0049] In a possible implementation, the priority of the first position is lower than or equal to the priority of the second position.

[0050] In a possible implementation, the priority of the location of the accessory is related to the function information of the accessory.

[0051] A possible implementation also includes:

[0052] When there is occlusal interference between the attachment and the opposing tooth of the first tooth, the position of the attachment on the orthodontic appliance is adjusted in a direction toward the gum edge.

[0053] A possible implementation method, before generating the edge cutting line of the orthodontic appliance, further includes: there is no occlusal interference between the attachment and the opposing tooth of the first tooth.

[0054] In a possible implementation, the appliance edge cutting line is determined at a preset distance based on position information of the second area.

[0055] In a possible implementation, the preset distance ranges from 0.2 mm to 2 mm.

[0056] In a possible implementation, the edge cutting line of the orthodontic appliance extends along a first direction of the first tooth and covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

[0057] A possible implementation also includes:

[0058] displaying at least a portion of the tooth model;

[0059] At least one of the appliance edge cutting line, the attachment, and the appliance is displayed.

[0060] In one possible implementation, in response to a second instruction from the user, the generated first cutting line is adjusted to a second cutting line, where the second instruction is used to indicate adjustment information of the first cutting line, and the second cutting line is used to generate a target appliance.

[0061] In one possible implementation, the second instruction is used to indicate at least one of the following:

[0062] Updating the location information of the attachment;

[0063] The target position of the first cutting line is adjusted.

[0064] The present application also provides an orthodontic appliance for being mounted on teeth, wherein the orthodontic appliance comprises an orthodontic appliance body and an accessory, wherein the accessory is arranged on the orthodontic appliance body;

[0065] The edge of the appliance is determined based on any of the above methods for generating an edge cutting line of the appliance.

[0066] The present application also provides a readable medium storing instructions executable by a processor to enable a computing device to perform a method, the method including any of the above methods for generating an edge cutting line of an orthodontic appliance.

[0067] The present application provides a brace, comprising a brace body and an accessory arranged on the brace body, the brace body including a second area for adding the accessory, and when the brace is mounted on a tooth, the second area is partially located below the first gum line of the tooth and partially located above the first gum line of the tooth.

[0068] In one possible implementation, when the braces are mounted on the teeth, the bottom surface of the attachment connected to the second area is partially arranged to correspond to the area below the first gum line, and partially arranged to correspond to the area above the first gum line.

[0069] A possible implementation method is that when the braces are mounted on the teeth, the second area corresponds to the crown or tooth gap of at least one first tooth; when the number of the first teeth is one, the second area corresponds to the crown and gum of the first tooth; when the number of the first teeth is multiple, the second area corresponds to the crowns, gums and tooth gaps of multiple first teeth.

[0070] One possible implementation method is that when the braces are mounted on the teeth, the attachment is at least partially located on the braces corresponding to at least part of the tooth or tooth gap of at least one first tooth; when the number of first teeth is one, the attachment corresponds to the crown and gum of the first tooth; when the number of first teeth is multiple, the attachment corresponds to the crowns, gums and tooth gaps of multiple first teeth.

[0071] In one possible implementation, the appliance includes an appliance edge cutting line, which is located below the first gum line only at the first tooth and substantially coincides with the first gum line at other teeth.

[0072] In a possible implementation, the braces include an appliance edge cutting line, and a portion of the braces edge cutting line on the first tooth and portions of other teeth adjacent to the first tooth are located below a first gum line.

[0073] In a possible implementation, the appliance includes an appliance edge cutting line, and a preset distance between the appliance edge cutting line and a corresponding edge contour line of the second area is in a range of 0.2 mm to 2 mm.

[0074] In one possible implementation, when the orthodontic appliance is mounted on the teeth and engages with the opposing teeth, the attachment is spaced apart from the opposing teeth.

[0075] In one possible implementation, the tooth includes a crown located above a first gum line and gums located below the first gum line, the second area includes a first end corresponding to the crown and a second end corresponding to the gums, and when the orthodontic appliance is mounted on the tooth, a first distance is provided between the first end and the crown, and a second distance is provided between the second end and the gums, and the first distance is greater than the second distance.

[0076] In a possible implementation manner, the second end portion is in close contact with the gums.

[0077] In a possible implementation, the appliance body further includes a third region and a connecting region connecting the third region and the second region, the third region is closely attached to the tooth crown, and the connecting region forms a bend between the second region and the third region.

[0078] In a possible implementation manner, the second area is a plane.

[0079] In a possible implementation, the angle between the plane where the second area is located and the jaw plane is in the range of 60°-90°.

[0080] In a possible implementation, a bottom surface of the accessory is connected to the second area, and the bottom surface covers part or all of the second area.

[0081] In a possible implementation, the accessory is a traction buckle, a traction hook, a tubular accessory, or a slot-type accessory.

[0082] The present application provides a brace, comprising a brace body and an accessory arranged on the brace body, the brace body comprising a second area for adding the accessory, and when the brace is mounted on the teeth, the second area is close to the first gum line of the teeth, or the second area intersects with the first gum line, in a direction perpendicular to the jaw plane, the second area comprises a first end and a second end arranged opposite to each other, the first end having a first distance from the teeth, the second end having a second distance from the teeth, and the first distance being greater than the second distance.

[0083] In one possible implementation, the second area is partially located below the first gum line of the tooth and partially located above the first gum line of the tooth; or, the second area is entirely located below the first gum line, or, the second area is entirely located above the first gum line.

[0084] In one possible implementation, the tooth includes a crown located above a first gum line and gum located below the first gum line, the first end portion corresponds to the crown, and there is the first distance between the first end portion and the crown, the second end portion corresponds to the gum, and there is the second distance between the second end portion and the gum.

[0085] In a possible implementation manner, the second end portion is in close contact with the gums.

[0086] In a possible implementation, the appliance body further includes a third region and a connecting region connecting the third region and the second region, the third region is closely attached to the teeth, and the connecting region forms a bend between the second region and the third region.

[0087] In a possible implementation manner, the second area is a plane.

[0088] In a possible implementation, the angle between the plane where the second area is located and the jaw plane is in the range of 60°-90°.

[0089] In a possible implementation, a bottom surface of the accessory is connected to the second area, and the bottom surface covers part or all of the second area.

[0090] In a possible implementation, the accessory is a traction buckle, a traction hook, a tubular accessory, or a slot-type accessory.

[0091] In one possible implementation, the second area partially extends below the first gum line, the appliance includes an appliance edge cutting line, and a preset distance between the appliance edge cutting line and the corresponding edge outer contour line of the second area is in a range of 0.2 mm to 2 mm.

[0092] In one possible implementation, the second area partially extends below the first gum line, and the braces include an appliance edge cutting line, and the appliance edge cutting line is located below the first gum line only in a portion of the second area, and the other portion of the appliance edge cutting line basically coincides with the first gum line.

[0093] In one possible implementation, the second area partially extends below the first gum line, and the appliance includes an appliance edge cutting line, and the portion of the appliance edge cutting line in the second area and the portions of other teeth adjacent to the second area are located below the first gum line.

[0094] In one possible implementation, when the orthodontic appliance is mounted on the teeth and engages with the opposing teeth, the attachment is spaced apart from the opposing teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0095] FIG1 is a schematic diagram showing the coordination between an orthodontic appliance and teeth without attachments installed according to an embodiment of the present invention.

[0096] FIG2 is a schematic diagram (I) showing the coordination between the orthodontic appliance with attached accessories and the teeth according to an embodiment of the present invention.

[0097] FIG3 is a schematic diagram (II) showing the coordination between the orthodontic appliance with attached accessories and the teeth according to an embodiment of the present invention.

[0098] FIG4 is a flow chart of a method for generating an edge cutting line of an orthodontic appliance according to an embodiment of the present invention.

[0099] FIG5 is a schematic diagram (I) showing the coordination between the orthodontic appliance with attached accessories and the teeth according to an embodiment of the present invention.

[0100] FIG6 is a schematic diagram (II) showing the coordination between the orthodontic appliance with attached accessories and the teeth according to an embodiment of the present invention.

[0101] FIG7 is a schematic diagram (III) showing the coordination between the orthodontic appliance with attached accessories and the teeth according to an embodiment of the present invention.

[0102] FIG8 is a schematic structural diagram of an electronic device in an embodiment of the present invention;

[0103] 9 to 13 are schematic diagrams of the coordination between the appliance and the teeth according to an embodiment of the present invention;

[0104] 14 to 17 are schematic diagrams of the coordination between the appliance and the teeth according to another embodiment of the present invention;

[0105] Explanation of reference numerals: Orthodontic appliance 10 Tooth crown 20 Gum line 30 Orthodontic appliance edge cutting line 40 Attachment 50 Opposing tooth 60 Second region 70 First end 71 Second end 72 Orthodontic appliance body 101 Bottom surface 51 Pulling member 52 Bottom 53 Connecting rod 54 Top 55 DETAILED DESCRIPTION

[0106] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0107] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0108] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0109] As shown in FIG1 , in one possible solution, the edge of the appliance 10 may be cut along the gum line 30 , that is, the appliance edge cutting line 40 is generally generated at the gum line 30 , and the appliance 10 is mounted on the crown 20 of the tooth.

[0110] As shown in FIG2 , when the crown 20 of a tooth is relatively low, the area in the vertical direction of the tooth where the accessory 50 can be added is relatively small, and the space required for adding the accessory 50 may not be met, resulting in the accessory 50 not being able to be added or having a low success rate in addition.

[0111] For another example, as shown in FIG3 , when the added accessory 50 has occlusal interference with the opposing teeth, it needs to be moved further toward the gum line 30 , but due to the limitation of the appliance edge cutting line 40 , there is no space required for further movement, resulting in the accessory 50 not being added successfully.

[0112] In response to the problems existing in the above-mentioned solution, this embodiment provides a method for generating an edge cutting line 40 of an orthodontic appliance. As shown in FIG5 , FIG6 and FIG7 , an accessory 50 is added to the orthodontic appliance 10. Depending on the type of the accessory 50, the manner in which the accessory 50 is added to the orthodontic appliance 10 is also different. For example, the accessory 50 can be added to the orthodontic appliance 10 by means of a fixed connection such as pasting, or can be added to the orthodontic appliance 10 as an integral part (for example, tongue thorn, etc.), or can be added to the orthodontic appliance 10 in other ways. It should be noted that in the field of dental orthodontic technology, there are many types of accessories 50 that assist orthodontic devices in moving teeth. Some are added to the orthodontic appliance 10, while others are added directly to the teeth. The accessories 50 in this embodiment only refer to the accessories 50 added to the orthodontic appliance 10.

[0113] Since the appliance 10 is placed on the user's teeth during use, data can be collected from the user's teeth first to generate a tooth model corresponding to the user's teeth. Then, the appliance 10 in its initial state can be simulated and placed on the tooth model through digital simulation. The appliance 10 in the initial state can be an appliance 10 that is cut along the gum line 30. The tooth model can be generated by a three-dimensional model obtained by scanning the user's mouth, a two-dimensional image formed by photographing the user's mouth, or a model obtained based on multiple types of image data after scanning the tooth model data. At the same time, the data source for the tooth model can be collected before generating a treatment plan, during the treatment process, when updating the treatment plan, or during remote monitoring.

[0114] On this basis, as shown in FIG4 , the tooth contour of the tooth model corresponding to at least one first tooth is identified, and the first area corresponding to the tooth contour is obtained. It should be noted that teeth in the oral cavity are generally divided into roots and crowns 20, and the periphery of the roots is covered with gums. The tooth contour is the external contour composed of the crown 20 of the first tooth and the interdental space, which is a three-dimensional shape. When the accessory 50 is added to the braces 10 and used with the braces 10 to correct the teeth, the accessory 50 is generally located on the labial or lingual side of the tooth. Therefore, the first area corresponding to the tooth contour is the area corresponding to the tooth contour on the labial or lingual side of the tooth.

[0115] In this embodiment, the first tooth is a tooth on the tooth model, and the number of first teeth can be one or more. If there is one first tooth, the first tooth is the specific tooth acted upon by the attachment 50 on the appliance 10. At this time, the identified tooth contour is the external contour of the crown 20 corresponding to the specific tooth, and the area corresponding to the external contour on the labial or lingual side of the tooth is the obtained first area; if there are multiple first teeth, the attachment 50 may be set on the appliance 10 corresponding to one of the first teeth, or it may be set on the appliance 10 corresponding to multiple first teeth and tooth gaps. At this time, the identified tooth contour is the external contour composed of the crowns 20 corresponding to multiple first teeth and tooth gaps, and the area corresponding to the external contour on the labial or lingual side of the tooth is the obtained first area.

[0116] While obtaining the first area, the second area corresponding to the attachment 50 is determined on the appliance 10 in its initial state. Since the appliance 10 in its initial state is simulated and placed on the tooth model, although the attachment 50 is added to the appliance 10, when the appliance 10 is placed on the tooth model, at least a portion of the attachment 50 also corresponds to at least a portion of the first tooth or the interdental space. In this case, the second area can be determined based on the area occupied by the attachment 50 relative to the first tooth. It should be noted that when there is only one first tooth, the attachment 50 may correspond directly to the crown 20 of the first tooth, or to the crown 20 and gums of the first tooth; when there are multiple first teeth, the attachment 50 may correspond to the crowns 20 and interdental spaces of multiple first teeth, or to the crowns 20, gums, and interdental spaces of multiple first teeth.

[0117] Specifically, the second area can be determined according to the type of accessory 50. For example, when the type of accessory 50 is determined, the position of the first tooth corresponding to it can be determined. At this time, the second area can be directly determined according to the coverage area of ​​the accessory 50 on the first tooth; if the position of the first tooth to which it corresponds cannot be determined based on the type of accessory 50 alone, the second area can be determined based on the type of accessory 50 and the position where it is to act; if the environment in which the accessory 50 is located after it is added may affect the determination of the second area, then on the basis of the type of accessory 50 and the position where the accessory 50 is to act, the environment described in the accessory 50 must also be considered, which specifically includes: a separate crown 20, tooth gaps, gums, etc., or a combination of the above.

[0118] After the first area and the second area are determined, the first area and the second area are compared. If the first area can completely cover the second area, for example, the accessory 50 on the left side of the diagram in Figure 5, the number of the first tooth is one, and the accessory 50 does not correspond to the gum of the first tooth, then when the braces 10 is mounted on the user's teeth, the accessory 50 on the braces 10 is located in the first area. At this time, the braces edge cutting line 40 can be directly generated according to the position of the gum line 30, that is, the braces 10 can be cut using the braces edge cutting line 40, and when the cut braces 10 is mounted on the user's teeth, the accessory 50 on the braces 10 can directly act on the user's teeth, and there will be no problem of the accessory 50 not being able to be added or the low success rate of adding.

[0119] In some embodiments, if the first area cannot completely cover the second area, such as the accessory 50 on the right side of the diagram in Figure 5, the number of first teeth is one, and the accessory 50 partially corresponds to the gum of the first tooth, then the appliance edge cutting line 40 can be generated according to the second area, and the appliance 10 can be cut according to the appliance edge cutting line 40. When the appliance 10 is mounted on the user's teeth, not only can the accessory 50 be successfully added to the appliance 10, but the success rate of the addition can also be improved.

[0120] Specifically, when the first area cannot completely cover the second area, the shapes of the second area and the edge cutting line 40 of the orthodontic appliance can be in various situations, which are described below with examples of situations 1 to 4.

[0121] In case 1, a portion of the appliance edge cutting line 40 corresponding to the first tooth is located below the first gum line 30 , and the first gum line 30 includes the gum line 30 of the first tooth.

[0122] It should be understood that the teeth are divided by the gum line 30, with the area above the gum line 30 indicating the crown 20 of the tooth, and the area below the gum line 30 indicating the gingival direction of the tooth. With this arrangement, after the appliance 10 is cut using the generated appliance edge cutting line 40 and then placed on the user's teeth, the attachment 50 can be successfully attached to the appliance 10 and act on the user's teeth.

[0123] As shown in FIG5 , there is one first tooth, and the first gum line 30 includes not only the gum line 30 of the first tooth, but also the gum lines 30 of multiple teeth adjacent to the first tooth. However, the generated appliance edge cutting line 40 is only located below the first gum line 30 at the location of the first tooth, and overlaps with the first gum line 30 at the locations of the other teeth. However, in other embodiments, there may be one or more first teeth, and the first gum line 30 may include only the gum line 30 of the first tooth, or the first gum line 30 may include not only the gum line 30 of the first tooth, but also at least a portion of the gum line 30 of at least one tooth adjacent to the first tooth. At the same time, the edge cutting line 40 of the braces may also be located below the first gum line 30 in a portion of the first tooth, without completely corresponding to the entire portion of the first tooth; and the edge cutting line 40 of the braces may also be located below the first gum line 30 in a portion of the first tooth and a tooth adjacent to the first tooth. There are no fixed restrictions. As long as the cut braces 10 can be placed on the user's teeth, the accessory 50 can be successfully added to the braces 10.

[0124] In case 2, at least a portion of the appliance edge cutting line 40 intersects the first gum line 30 , and the first gum line 30 includes the gum line 30 of the first tooth.

[0125] As shown in Figure 5, the number of first teeth is one, and the first gum line 30 includes not only the gum line 30 of the first tooth, but also the gum lines 30 of multiple teeth adjacent to the first tooth. However, the generated appliance edge cutting line 40 has a position intersecting with the first gum line 30, that is, the appliance edge cutting line 40 is only located below the first gum line 30 at the position of the first tooth, so that when the appliance 10 is placed on the user's teeth, the accessory 50 can be successfully added to the appliance 10 and act on the user's teeth.

[0126] Case 3: The second area is partially located below the first gum line 30 .

[0127] As shown in FIG5 , the second area corresponding to the right-hand attachment 50 on the first tooth is partially located below the first gum line 30. In this case, the corresponding first area cannot cover the second area. An appliance edge cutting line 40 can be generated based on the second area, and the appliance 10 can be cut based on the appliance edge cutting line 40. This ensures that when the appliance 10 is placed on the user's teeth, the attachment 50 can be successfully added to the appliance 10 and act on the user's teeth. It should be noted that in other embodiments, the second area can also be completely below the first gum line 30.

[0128] In case 4, the second region partially intersects with the first gum line 30 .

[0129] As shown in Figure 5, the second area corresponding to the accessory 50 on the right side on the first tooth partially intersects with the first gum line 30. At this time, the corresponding first area cannot cover the second area. The orthodontic appliance edge cutting line 40 can also be generated according to the second area, and the orthodontic appliance 10 can be cut according to the orthodontic appliance edge cutting line 40.

[0130] It should be noted that the above four situations may partially overlap or be combined, that is, in a specific implementation plan, a combination of two, three or even four of the above situations may be adopted.

[0131] In one possible implementation, when the accessory 50 is added to the braces 10 and used in conjunction with the braces 10 to correct the teeth, there may be a problem of occlusal interference between the accessory 50 and the opposing tooth 60 of the tooth. Therefore, it is necessary to adjust the position of the accessory 50 on the braces 10 to avoid the problem of occlusal interference while ensuring the function of the accessory 50.

[0132] Therefore, in the method for generating the edge cutting line 40 of the orthodontic appliance, when comparing the first area and the second area, it can also be determined whether the accessory 50 on the orthodontic appliance 10 will have occlusal interference with the opposing tooth 60 of the first tooth. If there is occlusal interference, the position of adding the accessory 50 on the orthodontic appliance 10 is adjusted accordingly.

[0133] There are many ways to add the position, and the following takes adding at the first position as an example.

[0134] The first position may be a preferred position selected in combination with actual application, a position selected in combination with the patient's indications, or a position selected based on the patient's dental condition, which is not limited here.

[0135] When the attachment 50 is added to the first position on the braces 10, it can be determined whether the attachment 50 will have an occlusal interference with the opposing tooth 60 of the first tooth. At the same time, it can also be determined whether the first area can cover the second area at this time. If there is no occlusal interference and the first area can cover the second area, the braces edge cutting line 40 can be generated according to the position of the gum line 30. Alternatively, if there is no occlusal interference and the first area cannot completely cover the second area, the braces edge cutting line 40 can be generated according to the second area. It should be noted that the first position at which the attachment 50 is added to the braces 10 is determined according to the type of the attachment 50, and the attachment 50 can play its role to the greatest extent at this first position.

[0136] However, if the attachment 50, when added to the appliance 10 in the first position, interferes with the first tooth's opposing tooth 60, the attachment 50 needs to be adjusted to the first position. As shown in FIG6 , the arrow indicates the direction in which the attachment 50 should be adjusted, and the position of the attachment 50 shown in the figure is the adjusted first position. At this time, when the attachment 50 is in the first position, there will be no occlusal interference with the first tooth's opposing tooth 60.

[0137] It should be noted that when the position of the attachment 50 added to the appliance 10 changes, the corresponding second area will also change. Therefore, there is no order in which the steps of "comparing the first area and the second area" and "determining whether the attachment 50 added to the appliance 10 will cause occlusal interference with the first tooth's opposing tooth 60" are performed. It should be understood that the two are performed in an interleaved manner, which is not limited here. The purpose is to ensure that when the appliance 10 is finally placed on the user's teeth, the attachment 50 can be successfully added to the appliance 10 and cooperate with the appliance 10 to correct the teeth, while at the same time avoiding occlusal interference between the attachment 50 and the opposing tooth 60 of the tooth.

[0138] Furthermore, the locations where the accessory 50 is added to the appliance 10 have a priority, and the accessories 50 are added to the appliance 10 in order of priority. The priority is determined based on the shape of the accessory 50, the function to be performed by the accessory 50, and other related characteristics. For example, for a specific accessory 50, the top ten priority locations are listed. The first-ranked location is the first location mentioned above. When the accessory 50 is added to this first location, the accessory 50 can maximize its function. In terms of priority, the second-ranked location is lower than the first-ranked location. That is, the function that the accessory 50 can achieve when added to the second-ranked location is less than that when added to the first-ranked location. The same applies to the third-ranked location, the fourth-ranked location, and so on. Of course, the same priority may also correspond to two or more locations. In this case, based on the need to better perform the function of the accessory 50, these two or more locations with the same priority can be used to add the accessory 50. However, in this case, other factors can also be considered to determine the location where the accessory 50 is added. The specific factors that can be considered may be factors existing in actual application scenarios and will not be elaborated here.

[0139] As shown in Figure 6, when the accessory 50 is added at the position with the highest priority, the accessory 50 may have occlusal interference with the opposing tooth 60 of the first tooth, and the installation position of the accessory 50 needs to be downgraded. For example, when the accessory 50 is installed at the first-level position, there will be occlusal interference with the opposing tooth 60 of the first tooth, and the accessory 50 is adjusted to the second-level position. When the accessory 50 is installed at the second-level position, there will still be occlusal interference with the opposing tooth 60 of the first tooth, the installation position of the accessory 50 can be further downgraded, for example, installed at the third-level position, and so on. The position of the accessory 50 on the orthodontic appliance 10 is adjusted to the first position by downgrading step by step based on the order of priority, that is, the accessory 50 will not have occlusal interference with the opposing tooth 60 of the first tooth when in the first position.

[0140] It should be noted that, in this embodiment, when the position where the accessory 50 is added to the braces 10 is the first position, the first position refers to a position where there is no occlusal interference with the opposing tooth 60 of the first tooth. Before adjusting the position of the accessory 50 on the braces 10 to the first position, the accessory 50 is located at the second position on the braces 10. The second position refers to the position where the accessory 50 is located when there is occlusal interference with the opposing tooth 60 of the first tooth.

[0141] In another embodiment, when the position where the accessory 50 is added to the appliance is the first position, there may still be occlusal interference with the first tooth's opposing tooth 60. In this case, the first position needs to be further adjusted. During each adjustment, the position of the accessory 50 before the adjustment is the second position, and the position of the accessory 50 after the adjustment is the new first position. In addition, during each adjustment, the priority corresponding to the new first position is lower than the priority of the corresponding second position. Ultimately, when the position where the accessory 50 is added to the appliance 10 is the final first position, there will be no occlusal interference with the first tooth's opposing tooth 60. It should be noted that during each adjustment, the priority corresponding to the new first position may also be equal to the priority of the corresponding second position. That is, when there are multiple adding positions with the same priority, if adding the accessory 50 to one of the positions will cause occlusal interference with the first tooth's opposing tooth 60, then when adjusting, it will be adjusted to other positions with the same priority.

[0142] Furthermore, as shown in FIG6 , in this embodiment, when there is occlusal interference between the attachment 50 and the opposing tooth 60 of the first tooth, the position of the attachment 50 on the appliance 10 is adjusted toward the gingival margin. In some embodiments, the adjustment direction of different attachments 50 is not fixed and needs to be determined based on the shape of the attachment 50 and the function to be achieved by the attachment 50.

[0143] It can be understood that in the process of continuous degradation of the installation position of the accessory 50, the second area and the first area where the accessory 50 is located can be simulated and compared, and the two do not have a fixed order. However, when the occlusal interference is not eliminated, the orthodontic edge cutting line 40 generated based on the comparison result is not the final orthodontic edge cutting line 40, that is, before generating the final orthodontic edge cutting line 40, it is necessary to ensure that there is no occlusal interference between the accessory 50 and the opposing tooth 60 of the first tooth.

[0144] Furthermore, in this embodiment, the orthodontic appliance edge cutting line 40 is generated based on the second area, specifically determined according to the preset distance from the position information of the second area. The position information of the second area is specifically the edge contour line of the second area. The orthodontic appliance edge cutting line 40 is generated at a position 0.2mm to 2mm away from the edge contour line of the second area, that is, at least at the position where the accessory 50 is installed, the orthodontic appliance edge cutting line 40 is between 0.2mm and 2mm away from the edge contour of the second area. It should be noted that the position information of the second area is not limited to the edge contour line of the second area. In other embodiments, the position information can also be the center position of the second area, or any information in the second area that can be used as a reference. In addition, in other embodiments, even if the edge contour of the second area is used as reference information, the size of the orthodontic appliance edge cutting line 40 from the edge contour of the second area can be adjusted as needed, and there is no fixed restriction.

[0145] In addition, the finally generated appliance edge cutting line 40 extends along the first direction of the first tooth and covers at least one tooth or tooth gap adjacent to the first tooth. The first direction can be the mesial direction of the first tooth or the distal direction of the first tooth, or it can be a direction determined based on other key points of the first tooth. For example, as shown in FIG7 , when there is only one first tooth, the finally generated appliance edge cutting line 40 is between 0.2 mm and 2 mm away from the edge contour of the second area at the first tooth position, and extends along the mesial and distal directions of the first tooth at the first tooth position, and covers a tooth adjacent to the first tooth. When the appliance 10 also needs to be installed on the remaining teeth, the corresponding edge cutting lines of the appliance 10 on the remaining teeth can be directly generated according to the corresponding gum line 30.

[0146] Furthermore, during the generation process of the entire appliance edge cutting line 40, the portion of the tooth model used to install the accessory 50 or the entire tooth model can be displayed, and the accessory 50 to be installed or the appliance 10 mounted on the tooth model or both can also be displayed on the tooth model in a specific manner.

[0147] Optionally, after the appliance edge cutting line 40 is generated according to the above method, the appliance edge cutting line 40 is also displayed so that the operator can more intuitively observe the appliance edge cutting line 40 and make adjustments more convenient. The specific method of displaying the appliance edge cutting line 40 can adopt conventional techniques in the art, for example, using specialized computer software to display the edge cutting of the appliance 10 in real time on a computer screen; or, using special lighting to display the appliance edge cutting line 40 on a prepared tooth model.

[0148] Furthermore, the method for generating the appliance edge cutting line 40 further includes: obtaining a first instruction from the user, the first instruction being used to indicate desired position information for the attachment 50 or desired position information for the edge of the appliance 10, and then generating the first cutting line using the first instruction and the second region described above. In actual operation, based on specific patient or treatment circumstances, the user can manually add the desired position for the attachment 50 or the desired position for the edge of the appliance 10 to achieve a better treatment effect.

[0149] For example, a user can add an attachment 50 or move the attachment 50 based on a display interface displaying a tooth model to determine a desired position of the attachment 50. After the user specifies the desired position of the attachment 50, a first instruction can be generated, which can be used to indicate the desired position information of the attachment 50. The position information can include coordinate information, movement information, target position information, etc. of the attachment 50, and can also be position information from the gums.

[0150] For another example, the user can move the appliance edge cutting line 40 based on a display interface displaying a tooth model to determine a desired position of the appliance edge cutting line 40. After the user specifies the desired position of the appliance edge cutting line 40, a first instruction can be generated, which can be used to indicate the desired position information of the appliance edge cutting line 40. The position information can be coordinate information, movement information, target position information, etc. of the appliance edge cutting line 40, or position information from the gum line 30.

[0151] After acquiring the first instruction, a first cutting line is generated according to the desired position of the attachment 50 or the appliance edge cutting line 40 and the second area.

[0152] Consider another possible scenario, after the first cutting line is displayed, the user can also adjust the first cutting line. For example, the user can operate the interface to adjust the position of the attachment 50 or the position of the first cutting line. The interface can display information such as the generated first cutting line and the attachment 50.

[0153] At the same time, the method for generating the appliance edge cutting line 40 also includes: in response to a second instruction from the user, adjusting the generated first cutting line to a second cutting line, the second instruction being used to indicate adjustment information of the first cutting line, and the second cutting line being used to generate the target appliance 10.

[0154] For example, the user can still adjust the position of the attachment 50 based on the display interface with the tooth model. After the user specifies the updated position of the attachment 50, a second instruction can be generated. The second instruction is used to indicate the update of the position information of the attachment 50, wherein the position information can be the coordinate information, movement information, target position information, etc. of the attachment 50, or it can be the position information from the gums.

[0155] For another example, a user can move a first cutting line based on a display interface showing a tooth model to determine a target position of the first cutting line. After the user specifies the target position of the first cutting line, a second instruction can be generated, which can be used to instruct to update the position information of the first cutting line. The position information can include coordinate information, movement information, target position information, etc. of the first cutting line, and can also be position information from the gum line 30.

[0156] After obtaining the second instruction, the first cutting line is adjusted to the second cutting line according to the target position of the attachment 50 or the first cutting line, and the target appliance 10 is generated using the second cutting line.

[0157] Another possible implementation method for generating the appliance edge cutting line 40 may include obtaining a tooth model corresponding to a first tooth, and in response to a first instruction from the user, determining a second region corresponding to the attachment 50, and directly generating the appliance edge cutting line 40 based on the second region. The tooth model may be generated based on a three-dimensional model obtained by scanning the user's oral cavity, a two-dimensional image obtained by photographing the user's oral cavity, or a model obtained based on multiple types of image data after scanning the tooth model data.

[0158] It should be noted that the first instruction mentioned in this implementation method can be the same as the first instruction in the above-mentioned embodiment, that is, the user can add the accessory 50 or move the accessory 50 based on the display interface showing the tooth model to determine the desired position of the accessory 50. After the user specifies the desired position of the accessory 50, a first instruction can be generated, and the first instruction can be used to indicate the desired position information of the accessory 50. Among them, the position information can be the coordinate information, movement information, target position information, etc. of the accessory 50, or it can be the position information from the gums. After the position information of the accessory 50 is determined according to the first instruction, the second area corresponding to the accessory 50 can be determined, and the orthodontic appliance edge cutting line 40 can be directly generated using the second area. The specific method of generating the orthodontic appliance edge cutting line according to the second area can refer to the above-mentioned embodiment. However, the first instruction in this implementation method can also be different from the first instruction in the above-mentioned embodiment, as long as the position where the accessory 50 is to be added to the orthodontic appliance 10 can be determined.

[0159] In this implementation, the portion of the tooth model used to install the accessory 50 can also be displayed, and the accessory 50 to be installed or the appliance 10 mounted on the tooth model or both can also be displayed on the tooth model in a specific manner. Optionally, after the appliance edge cutting line 40 is generated according to the above method, the appliance edge cutting line 40 is displayed so that the operator can observe the appliance edge cutting line 40 more intuitively, thereby making it more convenient to adjust it. Specifically, how to display the appliance edge cutting line 40 can be achieved by using conventional techniques in the art, for example, by using special computer software to display the edge cutting of the appliance 10 on a computer screen in real time; or, by using special lighting to display the appliance edge cutting line 40 on a prepared tooth model.

[0160] This embodiment further provides a device for generating a cutting line for an orthodontic appliance, comprising:

[0161] a processing module, configured to identify a tooth contour of a tooth model corresponding to at least one first tooth, and obtain a first region corresponding to the tooth contour;

[0162] a determination module configured to determine a second region corresponding to an attachment, the attachment being at least partially located on an appliance corresponding to at least a portion of a tooth or a tooth gap of at least one of the first teeth, the appliance being associated with the tooth model;

[0163] A generating module is used to generate an appliance edge cutting line according to the second area through a processing module when the first area cannot completely cover the second area, and the appliance edge cutting line is used to cut the appliance.

[0164] In a possible implementation, the edge cutting line of the appliance satisfies at least one of the following:

[0165] At least a portion of the appliance edge cutting line is located below the first gum line;

[0166] At least a portion of the cutting line of the edge of the appliance intersects the first gum line;

[0167] the second region being at least partially below the first gum line;

[0168] The second region at least partially intersects the first gum line;

[0169] The first gum line includes the gum line of at least one of the first teeth and / or at least a portion of the gum line of at least one tooth adjacent to the at least one first tooth.

[0170] A possible implementation also includes:

[0171] A processing module is used to adjust the position of the accessory on the orthodontic appliance to a first position when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0172] One possible implementation method is that before adjusting the position of the accessory on the orthodontic appliance to the first position, the accessory is at a second position on the orthodontic appliance, where the second position is the position of the accessory when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0173] In a possible implementation, the priority of the first position is lower than or equal to the priority of the second position.

[0174] In a possible implementation, the priority of the location of the accessory is related to the function information of the accessory.

[0175] A possible implementation also includes:

[0176] The processing module is used to adjust the position of the attachment on the orthodontic appliance when there is occlusal interference between the attachment and the opposing tooth of the first tooth, and the adjustment direction is toward the gum edge.

[0177] A possible implementation method, before generating the edge cutting line of the orthodontic appliance, further includes: there is no occlusal interference between the attachment and the opposing tooth of the first tooth.

[0178] In a possible implementation, the appliance edge cutting line is determined at a preset distance based on position information of the second area.

[0179] In a possible implementation, the preset distance ranges from 0.2 mm to 2 mm.

[0180] In a possible implementation, the edge cutting line of the orthodontic appliance extends along a first direction of the first tooth and covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

[0181] A possible implementation also includes:

[0182] The display module is used to display at least a portion of the tooth model; and to display at least one of the edge cutting line of the appliance, the attachment, and the appliance.

[0183] A possible implementation also includes:

[0184] an acquisition module, configured to acquire a first instruction from a user, wherein the first instruction is used to indicate desired position information of the attachment or desired position information of an edge of the appliance;

[0185] A processing module is configured to generate a first cutting line according to the first instruction and the second area.

[0186] A possible implementation also includes:

[0187] The processing module is configured to adjust the generated first cutting line to a second cutting line in response to a second instruction from the user, wherein the second instruction is used to indicate adjustment information of the first cutting line, and the second cutting line is used to generate a target appliance.

[0188] In one possible implementation, the second instruction is used to indicate at least one of the following:

[0189] Updating the location information of the attachment;

[0190] The target position of the first cutting line is adjusted.

[0191] The present application also provides a device for generating a cutting line of an appliance edge, comprising:

[0192] an acquisition module, configured to acquire a tooth model corresponding to at least one first tooth;

[0193] A processing module is used to determine a second area corresponding to the accessory in response to a first instruction from the user and the tooth model, where the accessory is at least partially located on the braces corresponding to at least a portion of the tooth or tooth gap of at least one of the first teeth; the first instruction is used to indicate position information of the accessory; and based on the second area, generate a braces edge cutting line.

[0194] In a possible implementation, the edge cutting line of the appliance satisfies at least one of the following:

[0195] At least a portion of the appliance edge cutting line is located below the first gum line;

[0196] At least a portion of the cutting line of the edge of the appliance intersects the first gum line;

[0197] the second region being at least partially below the first gum line;

[0198] The second region at least partially intersects the first gum line;

[0199] The first gum line includes the gum line of at least one of the first teeth and / or at least a portion of the gum line of at least one tooth adjacent to the at least one first tooth.

[0200] A possible implementation also includes:

[0201] A processing module is used to adjust the position of the accessory on the orthodontic appliance to a first position when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0202] One possible implementation method is that before adjusting the position of the accessory on the orthodontic appliance to the first position, the accessory is at a second position on the orthodontic appliance, where the second position is the position of the accessory when there is occlusal interference between the accessory and the opposing tooth of the first tooth.

[0203] In a possible implementation, the priority of the first position is lower than or equal to the priority of the second position.

[0204] In a possible implementation, the priority of the location of the accessory is related to the function information of the accessory.

[0205] A possible implementation also includes:

[0206] The processing module is used to adjust the position of the attachment on the orthodontic appliance when there is occlusal interference between the attachment and the opposing tooth of the first tooth, and the adjustment direction is toward the gum edge.

[0207] A possible implementation method, before generating the edge cutting line of the orthodontic appliance, further includes: there is no occlusal interference between the attachment and the opposing tooth of the first tooth.

[0208] In a possible implementation, the appliance edge cutting line is determined at a preset distance based on position information of the second area.

[0209] In a possible implementation, the preset distance ranges from 0.2 mm to 2 mm.

[0210] In a possible implementation, the edge cutting line of the orthodontic appliance extends along a first direction of the first tooth and covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

[0211] A possible implementation also includes:

[0212] The display module is used to display at least a portion of the tooth model; and to display at least one of the edge cutting line of the appliance, the attachment, and the appliance.

[0213] One possible implementation is

[0214] The processing module is configured to adjust the generated first cutting line to a second cutting line in response to a second instruction from the user, wherein the second instruction is used to indicate adjustment information of the first cutting line, and the second cutting line is used to generate a target appliance.

[0215] In a possible implementation, the second instruction is used to instruct at least one of the following: updating the position information of the accessory; and adjusting the target position of the first cutting line.

[0216] This embodiment also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements any possible method in the above embodiments when executing the program.

[0217] As shown in Figure 8, at the hardware level, the electronic device includes a processor, an internal bus, a network interface, a memory, and a non-volatile memory, and of course may also include hardware required for other services. The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it to implement the above-mentioned oral model display method or multi-plane reconstruction method. Of course, in addition to software implementation, this specification does not exclude other implementation methods, such as logic devices or a combination of software and hardware, etc., that is to say, the execution subject of the following processing flow is not limited to each logic unit, but can also be hardware or logic devices.

[0218] For the convenience of description, the above devices are described as being divided into various units according to their functions. Of course, when implementing this specification, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0219] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0220] In a typical configuration, a computing device includes one or more processors (CPUs), input / output interfaces, network interfaces, and memory.

[0221] The memory may include volatile memory, such as random access memory (RAM) and / or cache memory, and may further include read-only memory (ROM).

[0222] The memory may also include a program tool (or utility) having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0223] The processor executes various functional applications and data processing by running the computer programs stored in the memory, such as the method in the above embodiment.

[0224] The input and / or output device may include a scanning device, a camera interface, an input device (e.g., a mouse, a keyboard, etc.), a display device (e.g., a monitor), a printer, and / or one or more other input devices. The input / output interface may receive executable instructions and / or data, which may be stored in a data storage device (e.g., a memory), for example, may be used to receive or store oral model data or a target file.

[0225] In some embodiments, the scanning device can be configured to scan one or more physical dental models of a patient's dentition. In one or more embodiments, the scanning device can be configured to directly scan a patient's dentition and / or dental appliances. The scanning device can be configured to input data into a computing device.

[0226] In some embodiments, the camera interface can receive input from an imaging device (e.g., a 2D or 3D imaging device), such as a digital camera, a print photo scanner, and / or other suitable imaging device. For example, the input from the imaging device can be stored in a memory.

[0227] The processor may execute instructions to provide a display of the oral model on a display, etc. For example, the computing device may be configured to allow a treating professional or other user to input treatment goals. The received input may be sent to the processor as data and / or may be stored in a memory.

[0228] Such connectivity may allow for the input and / or output of data and / or instructions and other types of information.Some embodiments may be distributed among various computing devices within one or more networks and used to collect, calculate, and / or analyze any of the methods described herein.

[0229] It should be noted that although several units / modules or sub-units / modules of the electronic device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, depending on the embodiment of the present application, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0230] This embodiment also relates to an orthodontic appliance 10, which is configured to be mounted on teeth and includes an appliance body and an attachment 50. The attachment 50 is mounted on the appliance body. When the appliance body is mounted on the teeth, the attachment 50 acts on the specific teeth in a specific manner to achieve correction of the specific teeth. The edge cutting line of the appliance body is obtained using the method for generating the appliance edge cutting line 40 described above.

[0231] As described above, the method for generating the appliance edge cutting line 40, this embodiment also involves a readable medium, which is specifically a non-transitory computing device readable medium, and the readable medium stores instructions that can be executed by a processor to enable the computing device to perform the above generation method.

[0232] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Thus, this specification may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0233] An embodiment of the present invention provides a brace 10. In combination with Figures 9 and 10, the brace 10 includes a brace body 101 and an accessory 50 arranged on the brace body 101. The brace body 101 includes a second area 70 for adding the accessory 50. When the brace 10 is mounted on the tooth T, the second area 70 is partially located below the first gum line 30 of the tooth T and partially located above the first gum line 30 of the tooth T.

[0234] The tooth T is divided by a first gum line 30 . The area above the first gum line 30 is the direction of the crown 20 of the tooth T, and the area below the first gum line 30 is the direction of the gum T1 of the tooth T.

[0235] In this embodiment, the second area 70 extends from the crown 20 area above the first gum line 30 to the gum T1 area below the first gum line 30 . The second area 70 is larger in size and can provide more space for the installation of the accessory 50 .

[0236] Optionally, when the orthodontic appliance 10 is mounted on the tooth T, part of the bottom surface 51 of the accessory 50 connected to the second area 70 corresponds to the area below the first gum line 30, and part corresponds to the area above the first gum line 30, that is, the installation position of the accessory 50 extends from the crown 20 area above the first gum line 30 to the gum T1 area below the first gum line 30. The installation position of the accessory 50 is larger, and the fixing strength between the accessory 50 and the second area 70 is greater.

[0237] Optionally, the bottom surface 51 of the attachment 50 is connected to the second area 70 , and the bottom surface 51 covers part or all of the second area 70 .

[0238] When the bottom surface 51 covers part of the second area 70, the bottom surface 51 can be located in the middle area of ​​the second area 70, the lower area of ​​the second area 70, or the upper area of ​​the second area 70, etc. The projection of the accessory 50 in the second area 70 can be within the outer contour of the second area 70 or exceed the outer contour of the second area 70.

[0239] When the bottom surface 51 covers the entire area of ​​the second area 70 , the outer contour of the bottom surface 51 coincides with the outer contour of the second area 70 , and the projection of the accessory 50 in the second area 70 may be within the outer contour of the second area 70 or exceed the outer contour of the second area 70 .

[0240] Optionally, a tooth gap is formed between the crowns 20 of two adjacent teeth. When the orthodontic appliance 10 is mounted on the teeth, the second area 70 is arranged corresponding to the crown 20 of at least one first tooth T or the tooth gap.

[0241] When there is only one first tooth T, the second area 70 corresponds to the crown 20 and gum T1 of the first tooth. When there are multiple first teeth T, the second area 70 corresponds to the crowns 20, gums T1 and interdental spaces of multiple first teeth T.

[0242] Optionally, when the appliance 10 is mounted on the tooth T, the attachment 50 is at least partially located on the appliance 10 corresponding to at least a portion of the tooth T or the tooth gap of at least one first tooth T.

[0243] When there is only one first tooth T, the attachment 50 corresponds to the crown 20 and gum T1 of the first tooth T. When there are multiple first teeth T, the attachment 50 corresponds to the crowns 20, gums T1 and interdental spaces of multiple first teeth T.

[0244] Optionally, in combination with Figure 9, the braces 10 includes an appliance edge cutting line 40, which is located below the first gum line 30 only in the portion of the first tooth T, and basically coincides with the first gum line 30 in other tooth portions.

[0245] Figure 9 takes the first tooth T as an example. The second area 70 corresponds to the crown 20 and gum T1 of the first tooth T. The edge cutting line 40 of the orthodontic appliance only protrudes to the gum T1 area below the first gum line 30 at the first tooth T. The edge cutting line 40 of the orthodontic appliance basically coincides with the first gum line 30 at other teeth.

[0246] The edge cutting line 40 of the orthodontic appliance in Figure 9 may also be the area of ​​the gum T1 that protrudes below the first gum line 30 only in the second area 70. The edge cutting line 40 of the orthodontic appliance basically coincides with the first gum line 30 in the area of ​​the first tooth T except the corresponding second area 70 and other teeth.

[0247] Optionally, in conjunction with Figure 11, the braces 10 includes an appliance edge cutting line 40, and the braces edge cutting line 40 is located below the first gum line 30 at a portion of the first tooth T and portions of other teeth adjacent to the first tooth T.

[0248] Figure 11 takes the first tooth T as an example, the second area 70 corresponds to the crown 20 and gum T1 of the first tooth T. The edge cutting line 40 of the orthodontic appliance not only protrudes to the gum T1 area below the first gum line 30 at the first tooth T, but also protrudes to the gum T1 area below the first gum line 30 at the left and right teeth adjacent to the first tooth T. At this time, the edge cutting line 40 of the orthodontic appliance protruding below the first gum line 30 passes through three teeth.

[0249] Optionally, the preset distance L between the edge cutting line 40 of the appliance and the edge contour line of the corresponding second region 70 ranges from 0.2 mm to 2 mm.

[0250] The preset distance L is the vertical distance between the edge cutting line 40 of the appliance and the edge contour line of the second area 70 , and the preset distance L is controlled.

[0251] Optionally, when the orthodontic appliance 10 is placed on the teeth and engages with the opposing teeth, the attachment 50 is spaced apart from the opposing teeth, that is, when in the engaged state, there is no mutual interference between the attachment 50 and the opposing teeth.

[0252] Optionally, in combination with Figure 12, the tooth includes a crown 20 located above the first gum line 30 and a gum T1 located below the first gum line 30, and the second area 70 includes a first end 71 corresponding to the crown 20 and a second end 72 corresponding to the gum T1. When the orthodontic appliance 10 is mounted on the tooth, there is a first distance S1 between the first end 71 and the crown 20, and a second distance S2 between the second end 72 and the gum T1, and the first distance S1 is greater than the second distance S2.

[0253] "The first spacing S1 is greater than the second spacing S2" means that the area of ​​the second region 70 close to the incisal end (or occlusal surface) of the tooth is farther away from the tooth than the area far away from the incisal end (or occlusal surface) of the tooth. This is equivalent to partially pulling outward and raising the second region 70 that was originally set close to the teeth, so that the second region 70 extends roughly along the direction X perpendicular to the jaw plane P, that is, the second region 70 tends to be upright.

[0254] The accessory 50 is a traction buckle, a traction hook, a tubular accessory or a slot-type accessory. Compared with installing the accessory in the second area that is biased towards the horizontal state, installing the accessory 50 in the second area 70 that is biased towards the upright state is conducive to the installation of the traction member (such as a rubber band), preventing the traction member from easily detaching from the accessory 50, and is conducive to the stable force application of the traction member.

[0255] Optionally, the second region 70 is a plane, and the angle α between the plane where the second region 70 is located and the jaw plane P ranges from 60° to 90°, that is, the plane of the second region 70 extends roughly along the direction X perpendicular to the jaw plane P, but is not limited to absolute verticality.

[0256] Optionally, the second end 72 is in close contact with the gum T1, and the second area 70 is only pulled outward and raised at the first end 71 and the area adjacent to the first end 71, while the second end 72 is not pulled outward and raised. The second end 72 is still in close contact with the gum T1, which can improve the wrapping performance of the entire orthodontic appliance 10 on the teeth.

[0257] Optionally, the appliance body 101 further includes a third region 80 and a connecting region 90 connecting the third region 80 and the second region 70 . The third region 80 is in close contact with the crown 20 , and the connecting region 90 forms a bend between the second region 70 and the third region 80 .

[0258] “The connecting area 90 forms a bend between the second area 70 and the third area 80 ” means that a bend is formed between the connecting area 90 and the second area 70 , and a bend is also formed between the connecting area 90 and the third area 80 , so that the second area 70 can be pulled outward and raised.

[0259] The connecting area 90 extends roughly horizontally, the second area 70 extends roughly vertically, the third area 80 and the connecting area 90 are roughly perpendicular to each other, and the connecting area 90 and the second area 70 are roughly perpendicular to each other, but this is not limited to it. Other bending forms can also be used between the third area 80, the connecting area 90 and the second area 70.

[0260] In conjunction with Figure 13, it is a schematic diagram of two accessories 50 of the same jaw connected by a traction member 52. Taking the accessory 50 as a traction buckle as an example, the accessory 50 includes a bottom 53 connected to the second area 70, a connecting rod 54 connected to the bottom 53, and a top 55 located on the side of the connecting rod 54 away from the bottom 53. The traction member 52 is mounted on the connecting rod 54.

[0261] When the second area 70 extends roughly along the direction X perpendicular to the jaw plane P, the extension direction of the connecting rod 54 is roughly perpendicular to the buccal surface of the tooth, and the extension direction of the traction member 52 is roughly parallel to the buccal surface of the tooth, which can prevent the traction member 52 from detaching from the connecting rod 54 and ensure the stable force of the traction member 52.

[0262] When the two attachments 50 are not in the same jaw, the second region 70 extending substantially in the direction X perpendicular to the jaw plane P can be used to prevent the traction member 52 from being separated from the connecting rod 54 and ensure stable force application of the traction member 52 .

[0263] It should be noted that the junction between the crown 20 and the gum T1 is a relatively steep slope. At this time, the second area 70 is more likely to be biased towards the horizontal state. Therefore, the second area 70 here is pulled outward and raised, which can effectively avoid affecting the normal use of the accessory 50 due to the angle problem of the second area 70.

[0264] Another embodiment of the present invention provides a brace 10. In conjunction with Figures 14 and 15, the brace 10 includes an brace body 101 and an accessory 50 arranged on the brace body 101. The brace body 101 includes a second area 70 to which the accessory 50 is added. When the brace 10 is mounted on the tooth T, the second area 70 is close to the first gum line 30 of the tooth, or the second area 70 intersects with the first gum line 30.

[0265] The tooth T is divided by a first gum line 30 . The area above the first gum line 30 is the direction of the crown 20 of the tooth T, and the area below the first gum line 30 is the direction of the gum T1 of the tooth T.

[0266] "The second area 70 is close to the first gum line 30 of the tooth" means that the second area 70 is in the adjacent area of ​​the first gum line 30, and "the second area 70 intersects with the first gum line 30" means that the first gum line 30 passes through the second area 70. In short, the second area 70 is in the area away from the incisal end (or occlusal surface) of the tooth.

[0267] Optionally, the second area 70 is partially located below the first gum line 30 of the tooth T and partially located above the first gum line 30 of the tooth T; or, the entire second area 70 is located below the first gum line 30, or, the entire second area 70 is located above the first gum line 30, that is, the second area 70 may be located on one side of the first gum line 30, or the second area 70 is located on both sides of the first gum line 30. In this embodiment, taking the second area 70 being partially located below the first gum line 30 of the tooth T and partially located above the first gum line 30 of the tooth T as an example, the second area 70 extends from the crown 20 area above the first gum line 30 to the gum T1 area below the first gum line 30. The second area 70 is larger in size and can provide more space for the installation of the accessory 50.

[0268] In the direction perpendicular to the jaw plane P, the second area 70 includes a first end 71 and a second end 72 that are oppositely arranged. There is a first distance S1 between the first end 71 and the tooth T, and there is a second distance S2 between the second end 72 and the tooth T. The first distance S1 is greater than the second distance S2.

[0269] "The first spacing S1 is greater than the second spacing S2" means that the area of ​​the second region 70 close to the incisal end (or occlusal surface) of the tooth is farther away from the tooth than the area far away from the incisal end (or occlusal surface) of the tooth. This is equivalent to partially pulling outward and raising the second region 70 that was originally set close to the teeth, so that the second region 70 extends roughly along the direction X perpendicular to the jaw plane P, that is, the second region 70 tends to be upright.

[0270] The accessory 50 is a traction buckle, a traction hook, a tubular accessory or a slot-type accessory. Compared with installing the accessory in the second area that is biased towards the horizontal state, installing the accessory 50 in the second area 70 that is biased towards the upright state is conducive to the installation of the traction member (such as a rubber band), preventing the traction member from easily detaching from the accessory 50, and is conducive to the stable force application of the traction member.

[0271] When the second area 70 is partially located below the first gum line 30 of the tooth T and partially located above the first gum line 30 of the tooth T, the first end 71 corresponds to the crown 20, and there is a first distance S1 between the first end 71 and the crown 20, and the second end 72 corresponds to the gum T1, and there is a second distance S2 between the second end 72 and the gum T1.

[0272] Optionally, the second region 70 is a plane, and the angle α between the plane where the second region 70 is located and the jaw plane P ranges from 60° to 90°, that is, the plane of the second region 70 extends roughly along the direction X perpendicular to the jaw plane P, but is not limited to absolute verticality.

[0273] Optionally, the second end 72 is in close contact with the gum T1, and the second area 70 is only pulled outward and raised at the first end 71 and the area adjacent to the first end 71, while the second end 72 is not pulled outward and raised. The second end 72 is still in close contact with the gum T1, which can improve the wrapping performance of the entire orthodontic appliance 10 on the teeth.

[0274] Optionally, the appliance body 101 further includes a third region 80 and a connecting region 90 connecting the third region 80 and the second region 70 . The third region 80 is in close contact with the crown 20 , and the connecting region 90 forms a bend between the second region 70 and the third region 80 .

[0275] “The connecting area 90 forms a bend between the second area 70 and the third area 80 ” means that a bend is formed between the connecting area 90 and the second area 70 , and a bend is also formed between the connecting area 90 and the third area 80 , so that the second area 70 can be pulled outward and raised.

[0276] The connecting area 90 extends roughly horizontally, the second area 70 extends roughly vertically, the third area 80 and the connecting area 90 are roughly perpendicular to each other, and the connecting area 90 and the second area 70 are roughly perpendicular to each other, but this is not limited to it. Other bending forms can also be used between the third area 80, the connecting area 90 and the second area 70.

[0277] In conjunction with Figure 16, it is a schematic diagram of two accessories 50 of the same jaw connected by a traction member 52. Taking the accessory 50 as a traction buckle as an example, the accessory 50 includes a bottom 53 connected to the second area 70, a connecting rod 54 connected to the bottom 53, and a top 55 located on the side of the connecting rod 54 away from the bottom 53. The traction member 52 is mounted on the connecting rod 54.

[0278] When the second area 70 extends roughly along the direction X perpendicular to the jaw plane P, the extension direction of the connecting rod 54 is roughly perpendicular to the buccal surface of the tooth, and the extension direction of the traction member 52 is roughly parallel to the buccal surface of the tooth, which can prevent the traction member 52 from detaching from the connecting rod 54 and ensure the stable force of the traction member 52.

[0279] When the two attachments 50 are not in the same jaw, the second region 70 extending substantially in the direction X perpendicular to the jaw plane P can be used to prevent the traction member 52 from being separated from the connecting rod 54 and ensure stable force application of the traction member 52 .

[0280] It should be noted that the junction between the crown 20 and the gum T1 is a relatively steep slope. At this time, the second area 70 is more likely to be biased towards the horizontal state. Therefore, the second area 70 here is pulled outward and raised, which can effectively avoid affecting the normal use of the accessory 50 due to the angle problem of the second area 70.

[0281] Optionally, the bottom surface 51 of the attachment 50 is connected to the second area 70 , and the bottom surface 51 covers part or all of the second area 70 .

[0282] When the bottom surface 51 covers part of the second area 70, the bottom surface 51 can be located in the middle area of ​​the second area 70, the lower area of ​​the second area 70, or the upper area of ​​the second area 70, etc. The projection of the accessory 50 in the second area 70 can be within the outer contour of the second area 70 or exceed the outer contour of the second area 70.

[0283] When the bottom surface 51 covers the entire area of ​​the second area 70 , the outer contour of the bottom surface 51 coincides with the outer contour of the second area 70 , and the projection of the accessory 50 in the second area 70 may be within the outer contour of the second area 70 or exceed the outer contour of the second area 70 .

[0284] Optionally, in combination with Figure 14, the second area 70 partially extends below the first gum line 30, and the braces 10 includes an appliance edge cutting line 40, which is located below the first gum line 30 only in a portion of the second area 70, and the other portion of the appliance edge cutting line 40 basically overlaps with the first gum line 30.

[0285] Figure 14 takes the crown 20 and gum T1 of a tooth T corresponding to the second area 70 as an example. The edge cutting line 40 of the orthodontic appliance only protrudes to the gum T1 area below the first gum line 30 at the tooth T, and the edge cutting line 40 of the orthodontic appliance basically coincides with the first gum line 30 at other teeth.

[0286] The edge cutting line 40 of the orthodontic appliance in Figure 14 may also be the area of ​​the gum T1 that protrudes below the first gum line 30 only in the second area 70. The edge cutting line 40 of the orthodontic appliance basically coincides with the first gum line 30 in the area of ​​the tooth T except the corresponding second area 70 and other teeth.

[0287] Optionally, in conjunction with Figure 17, the appliance 10 includes an appliance edge cutting line 40, and the portion of the appliance edge cutting line 40 in the second area 70 and the portion of other teeth adjacent to the second area 70 are located below the first gum line 30.

[0288] Figure 17 takes the crown 20 and gum T1 of a tooth T corresponding to the second area 70 as an example. The edge cutting line 40 of the orthodontic appliance not only protrudes to the gum T1 area below the first gum line 30 at the tooth T having the second area 70, but also protrudes to the gum T1 area below the first gum line 30 at the left and right teeth adjacent to the tooth T. At this time, the edge cutting line 40 of the orthodontic appliance protruding below the first gum line 30 passes through three teeth.

[0289] Optionally, the preset distance L between the edge cutting line 40 of the appliance and the edge contour line of the corresponding second region 70 ranges from 0.2 mm to 2 mm.

[0290] The preset distance L is the vertical distance between the edge cutting line 40 of the appliance and the edge contour line of the second area 70 , and the preset distance L is controlled.

[0291] Optionally, when the orthodontic appliance 10 is placed on the teeth and engages with the opposing teeth, the attachment 50 is spaced apart from the opposing teeth, that is, when in the engaged state, there is no mutual interference between the attachment 50 and the opposing teeth.

[0292] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A method for generating a cutting line at the edge of an orthodontic appliance, characterized in that, The generation method includes the following: Identify the tooth contour of the tooth model corresponding to at least one first tooth, and obtain the first area corresponding to the tooth contour; Determine the second area corresponding to the attachment, where at least part of the attachment is located on the orthodontic appliance corresponding to at least part of at least one of the first teeth or the tooth gaps, and the orthodontic appliance is related to the tooth model; When the first area cannot completely cover the second area, generate an orthodontic appliance edge cutting line according to the second area, and the orthodontic appliance edge cutting line is used to cut the orthodontic appliance.

2. The method for generating the edge cutting line of the orthodontic appliance according to claim 1, wherein The orthodontic appliance edge cutting line satisfies at least one of the following: At least part of the orthodontic appliance edge cutting line is located below the first gingival line; At least part of the cutting line of the orthodontic appliance edge cutting line intersects the first gingival line; At least part of the second area is located below the first gingival line; At least part of the second area intersects the first gingival line; The first gingival line includes the gingival line of at least one of the first teeth, and / or at least part of the gingival line of at least one tooth adjacent to at least one of the first teeth.

3. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-2, characterized in that, The generation method further includes: When there is occlusal interference between the attachment and the opposing tooth of the first tooth, adjust the position of the attachment on the orthodontic appliance to the first position.

4. The method for generating the edge cutting line of the orthodontic appliance according to claim 3, characterized in that, Before adjusting the position of the attachment on the orthodontic appliance to the first position, the attachment is at the second position on the orthodontic appliance, and the second position is the position where the attachment is located when there is occlusal interference between the attachment and the opposing tooth of the first tooth.

5. The method for generating the edge cutting line of the orthodontic appliance according to claim 4, wherein The priority of the first position is lower than or equal to the priority of the second position.

6. The method for generating the edge cutting line of the orthodontic appliance according to claim 5, wherein The priority of the position where the attachment is located is related to the functional information of the attachment.

7. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-6, characterized in that, The generation method further includes: When there is occlusal interference between the attachment and the opposing tooth of the first tooth, adjust the position of the attachment on the orthodontic appliance, and the adjustment direction is towards the gingival margin.

8. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-7, characterized in that, Before generating the orthodontic appliance edge cutting line, it further includes: there is no occlusal interference between the attachment and the opposing tooth of the first tooth.

9. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-8, characterized in that, The orthodontic appliance edge cutting line is determined at a preset distance away from the position information of the second area.

10. The method for generating the edge cutting line of the orthodontic appliance according to claim 9, characterized in that, The range of the preset distance is between 0.2 mm and 2 mm.

11. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-10, characterized in that, The orthodontic appliance edge cutting line extends along the first direction of the first tooth and at least covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

12. The method for generating the edge cutting line of the appliance according to any one of claims 1-11, characterized in that, The generation method further includes: Display at least part of the tooth model; Display at least one of the orthodontic appliance edge cutting line, the attachment, and the orthodontic appliance.

13. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 1-12, characterized in that, The generation method further includes: Obtain the first instruction of the user, and the first instruction is used to indicate the desired position information of the attachment or the desired position information of the orthodontic appliance edge; In generating the orthodontic appliance edge cutting line according to the second area, it includes: generating a first cutting line according to the first instruction and the second area.

14. The method for generating the edge cutting line of the orthodontic appliance according to claim 13, characterized in that, The generation method further includes: In response to the second instruction of the user, adjust the generated first cutting line to a second cutting line, the second instruction is used to indicate the adjustment information of the first cutting line, and the second cutting line is used to generate the target orthodontic appliance.

15. The method for generating the edge cutting line of the orthodontic appliance according to claim 14, wherein, The second instruction is used to indicate at least one of the following: Updating the position information of the attachment; The adjustment target position of the first cutting line.

16. A method for generating a cutting line at the edge of an orthodontic appliance, characterized in that, The generation method includes: Obtaining a tooth model corresponding to at least one first tooth; In response to a first instruction from the user and the tooth model, determining a second area corresponding to the attachment, where at least part of the attachment is located on an appliance corresponding to at least part of at least one of the first teeth or tooth gaps; the first instruction is used to indicate the position information of the attachment; Generating an appliance edge cutting line according to the second area.

17. The method for generating the edge cutting line of the orthodontic appliance according to claim 16, wherein The appliance edge cutting line satisfies at least one of the following: At least part of the appliance edge cutting line is located below the first gingival line; At least part of the cutting line of the appliance edge cutting line intersects the first gingival line; At least part of the second area is located below the first gingival line; At least part of the second area intersects the first gingival line; The first gingival line includes the gingival line of at least one of the first teeth and / or at least part of the gingival line of at least one tooth adjacent to at least one of the first teeth.

18. The method for generating the edge cutting line of the appliance according to any one of claims 16-17, characterized in that, Before generating the appliance edge cutting line, it further includes: there is no occlusal interference between the attachment and the antagonist teeth of the first teeth.

19. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 16-18, characterized in that, The appliance edge cutting line is determined at a preset distance away from the position information of the second area.

20. The method for generating the orthodontic appliance edge cutting line according to claim 19, wherein, The range of the preset distance is between 0.2 mm and 2 mm.

21. The method for generating the edge cutting line of the orthodontic appliance according to any one of claims 16-20, characterized in that, The appliance edge cutting line extends along a first direction of the first teeth and at least covers at least one tooth or tooth gap adjacent to at least one of the first teeth.

22. The method for generating the edge cutting line of the appliance according to any one of claims 16-21, characterized in that, The generation method further includes: Displaying at least part of the tooth model; Displaying at least one of the appliance edge cutting line, the attachment, and the appliance.

23. An orthodontic appliance for being sleeved on teeth, characterized in that, The appliance includes an appliance body and an attachment, and the attachment is arranged on the appliance body; The edge of the appliance is determined based on the generation method of the appliance edge cutting line according to any one of claims 1-15; Alternatively, the edge of the appliance is determined based on the generation method of the appliance edge cutting line according to any one of claims 16-22.

24. A readable medium, characterized in that, The readable medium stores instructions executable by a processor to cause a computing device to execute a method, and the method includes the generation method of the appliance edge cutting line according to any one of claims 1-15; Alternatively, the method includes the generation method of the appliance edge cutting line according to any one of claims 16-22.

25. An appliance, characterized in that, It includes an appliance body and an attachment arranged on the appliance body. The appliance body includes a second area for adding the attachment. When the appliance is sleeved on the teeth, part of the second area is located below the first gingival line of the teeth and part is located above the first gingival line of the teeth.

26. The appliance according to claim 25, characterized in that, When the appliance is sleeved on the teeth, the bottom surface part of the attachment connecting the second area is arranged corresponding to the area below the first gingival line and part is arranged corresponding to the area above the first gingival line.

27. The orthodontic appliance according to claim 25, characterized in that, When the orthodontic appliance is sleeved on the teeth, the second region is disposed corresponding to the crown or tooth gap of at least one first tooth. When the number of the first teeth is one, the second region corresponds to the crown and gingiva of the first tooth. When the number of the first teeth is multiple, the second region corresponds to the crowns, gingivas and tooth gaps of the multiple first teeth.

28. The appliance according to claim 25, characterized in that, When the orthodontic appliance is sleeved on the teeth, at least part of the attachment is located on the orthodontic appliance corresponding to at least part of at least one first tooth or the tooth gap. When the number of the first teeth is one, the attachment corresponds to the crown and gingiva of the first tooth. When the number of the first teeth is multiple, the attachment corresponds to the crowns, gingivas and tooth gaps of the multiple first teeth.

29. The appliance according to claim 27 or 28, characterized in that, The orthodontic appliance includes an orthodontic appliance edge cutting line, and the orthodontic appliance edge cutting line is only below the first gingival line at the part of the first tooth, and the orthodontic appliance edge cutting line basically coincides with the first gingival line at the parts of other teeth.

30. The appliance according to claim 27 or 28, characterized in that, The orthodontic appliance includes an orthodontic appliance edge cutting line, and the orthodontic appliance edge cutting line is below the first gingival line at the part of the first tooth and at the parts of other teeth adjacent to the first tooth.

31. The orthodontic appliance according to claim 25, wherein The tooth includes a crown above the first gingival line and a gingiva below the first gingival line. The second region includes a first end corresponding to the crown and a second end corresponding to the gingiva. When the orthodontic appliance is sleeved on the teeth, there is a first distance between the first end and the crown, and there is a second distance between the second end and the gingiva, and the first distance is greater than the second distance.

32. The orthodontic appliance according to claim 31, wherein, The second end is in close contact with the gingiva.

33. An appliance, characterized in that, It includes an orthodontic appliance body and an attachment provided on the orthodontic appliance body. The orthodontic appliance body includes a second region where the attachment is added. When the orthodontic appliance is sleeved on the teeth, the second region is close to the first gingival line of the teeth, or the second region intersects with the first gingival line. In the direction perpendicular to the occlusal plane, the second region includes a first end and a second end which are oppositely arranged. There is a first distance between the first end and the teeth, and there is a second distance between the second end and the teeth, and the first distance is greater than the second distance.

34. The orthodontic appliance according to any one of claims 31-33, characterized in that, The orthodontic appliance body further includes a third region and a connection region connecting the third region and the second region. The third region is in close contact with the crown, and the connection region forms a bend between the second region and the third region.

35. The appliance according to claim 25 or 33, characterized in that, The second region is a plane.

36. The orthodontic appliance according to claim 35, wherein The included angle range between the plane where the second region is located and the occlusal plane is 60° - 90°.

37. The appliance according to claim 25 or 33, characterized in that, The bottom surface of the attachment is connected to the second region, and the bottom surface covers part or all of the second region.

38. The appliance according to claim 25 or 33, characterized in that, The attachment is a traction buckle, a traction hook, a tubular attachment or a groove-shaped attachment.

39. The orthodontic appliance according to claim 25 or 33, characterized in that, The second region partially extends below the first gingival line. The orthodontic appliance includes an orthodontic appliance edge cutting line, and the preset distance range between the orthodontic appliance edge cutting line and the outer contour line of the corresponding second region is between 0.2 mm and 2 mm.

40. The appliance according to claim 25 or 33, characterized in that, When the orthodontic appliance is sleeved on the teeth and bites with the opposing teeth, the attachment is spaced from the opposing teeth.

41. The appliance according to claim 33, wherein The second region is partially located below the first gingival line of the tooth and partially located above the first gingival line of the tooth; alternatively, the second region is entirely located below the first gingival line, or the second region is entirely located above the first gingival line.

42. The appliance according to claim 41, wherein, The tooth includes a crown located above the first gingival line and a gingiva located below the first gingival line. The first end corresponds to the crown, and there is a first distance between the first end and the crown. The second end corresponds to the gingiva, and there is a second distance between the second end and the gingiva.

43. The appliance according to claim 42, wherein, The second end is in close contact with the gingiva.

44. The orthodontic appliance according to claim 33, wherein, The second region extends partially below the first gingival line. The appliance includes an appliance edge cutting line, and the appliance edge cutting line is only in the part of the second region that is located below the first gingival line, and the other parts of the appliance edge cutting line are substantially coincident with the first gingival line.

45. The appliance according to claim 33, wherein, The second region extends partially below the first gingival line. The appliance includes an appliance edge cutting line, and the part of the second region and the parts of other teeth adjacent to the second region of the appliance edge cutting line are located below the first gingival line.

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