Composite dental model, digital model design method thereof and dental instrument manufacturing method

Abstract

The invention discloses a composite tooth jaw model which comprises an upper jaw tooth jaw model, a lower jaw tooth jaw model and a positioning assembly capable of locking the relative position relation of the upper jaw and the lower jaw. The maxillary tooth model comprises a maxillary tooth part and a maxillary supporting part for supporting the maxillary tooth part; the lower jaw tooth model comprises a lower jaw tooth part and a lower jaw supporting part for supporting the lower jaw tooth part; the positioning assembly comprises an upper jaw positioning piece connected with the upper jaw supporting part and a lower jaw positioning piece connected with the lower jaw supporting part; wherein after the upper jaw positioning piece and the lower jaw positioning piece are directly assembled or indirectly assembled, the relative position of the upper jaw and the lower jaw of the composite tooth jaw model can be positioned to the corresponding position of the target jaw position of the patient. The invention further provides a design method of the composite dental digital model and a manufacturing method of a dental instrument.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of orthodontics, more precisely to the technical field of dental appliance manufacturing, and in particular to a composite dental arch model, a design method of a composite digital dental arch model, and a dental appliance manufacturing method. BACKGROUND

[0002] In the technical field of orthodontics, due to the advantages of aesthetics, convenience, and ease of cleaning, shell-shaped dental appliances based on high polymer materials are becoming increasingly popular. Shell-shaped dental appliances are usually a one-piece shell that forms a cavity to accommodate multiple teeth, and the geometry of the cavity substantially matches these teeth in the corresponding arrangement. Shell-shaped dental appliances include maxillary shell-shaped dental appliances and mandibular shell-shaped dental appliances. In the processing process, the solid models of the upper and lower dental arches are usually printed separately, and then the maxillary shell-shaped dental appliance and the mandibular shell-shaped dental appliance are manufactured respectively through a hot pressing film process. However, in addition to tooth information, dental arch arrangement information also includes an important information, i.e., jaw position information. However, in the processing process, the jaw position information cannot be reflected or accurately reproduced, resulting in inaccurate positioning of the jaw position by the manufactured shell-shaped dental appliance, and poor orthodontic results or failure to achieve the expected orthodontic results. For example, for shell-shaped dental appliances used for jaw position reconstruction or snoring prevention, the upper and lower teeth are usually in non-contact or point contact in the front teeth and non-contact in the back teeth in the target jaw position. In this case, if the upper and lower shell-shaped dental appliances cannot accurately position the required jaw position relationship, the shell-shaped dental appliance with the jaw position cannot be obtained, and the target jaw position cannot be accurately positioned, which will result in the failure to achieve the expected orthodontic effect.

[0003] Therefore, it is necessary to provide a dental arch model that can position the target jaw position relationship of a patient. SUMMARY

[0004] The present application solves the technical problem of overcoming the defects in the prior art and provides a composite dental arch model that can position the target jaw position relationship of a patient, a design method of a composite digital dental arch model, and a dental appliance manufacturing method based on the composite digital dental arch model.

[0005] To achieve the above-mentioned purposes, the technical solutions adopted by the present application are as follows:

[0006] The composite dental model comprises: a maxillary dental model, a mandibular dental model, and a positioning assembly capable of locking the relative position relationship between the maxillary and mandibular dental models; the maxillary dental model comprises a maxillary tooth part and a maxillary support part supporting the maxillary tooth part; the mandibular dental model comprises a mandibular tooth part and a mandibular support part supporting the mandibular tooth part; the positioning assembly comprises a maxillary positioning part connected with the maxillary support part and a mandibular positioning part connected with the mandibular support part; and after the maxillary positioning part and the mandibular positioning part are directly assembled or indirectly assembled, the relative position between the maxillary and mandibular dental models of the composite dental model can be positioned to the corresponding position of the target jaw position of the patient. Through the addition of the positioning assembly, the jaw position relationship between the upper and lower jaws when the patient's dentition is in the target jaw position can be accurately copied, and the composite dental model can be used to process dental instruments that require accurate jaw position relationship or to check the jaw position of dental instruments.

[0007] Preferably, the maxillary support part is a maxillary gingival part consistent with the maxillary gingival morphology of the patient, and the mandibular support part is a mandibular gingival part consistent with the mandibular gingival morphology of the patient. The structure of such a support part is simple and easy to operate in processing, and can save the raw materials for printing the dental model.

[0008] Preferably, one end of the maxillary positioning part is connected to the lingual side or labial side of the maxillary support part, forming at least three non-collinear connection point positions on the maxillary support part, and one end of the mandibular positioning part is connected to the lingual side or labial side of the mandibular support part, forming mandibular connection point positions corresponding to the connection point positions of the maxillary on the mandibular support part. By connecting the maxillary positioning part to the maxillary support part and the mandibular positioning part to the mandibular support part through at least three non-collinear connection point positions respectively, the connected positioning assembly can be stably supported between the maxillary dental model and the mandibular dental model without increasing the complexity of the structure, thereby accurately positioning the required jaw position relationship.

[0009] Preferably, the anterior tooth region of the support part of the same jaw is provided with a first connection point position, and the left and right sides of the posterior tooth region of the support part of the same jaw are respectively provided with a second connection point position and a third connection point position. Such a triangularly arranged connection point position of the anterior tooth region and the posterior tooth region has strong stability.

[0010] Preferably, when the maxillary positioning part and the mandibular positioning part are directly assembled, the maxillary positioning part comprises a maxillary connecting part connected with the maxillary support part and a first auxiliary positioning part integrally connected with the maxillary connecting part, and the mandibular positioning part comprises a mandibular connecting part connected with the mandibular support part and a second auxiliary positioning part integrally connected with the mandibular connecting part, wherein the first auxiliary positioning part and the second auxiliary positioning part are respectively provided with corresponding concave-convex matching structures. The concave-convex matching structure design facilitates installation and disassembly.

[0011] Preferably, the upper jaw connecting member is arranged to extend along the lingual or labial side of the upper jaw support, the first auxiliary positioning member is arranged to extend downward from the end connected with the upper jaw connecting member, the lower jaw connecting member is arranged to extend along the lingual or labial side of the lower jaw support and is consistent with the extending direction of the upper jaw connecting member, and the second auxiliary positioning member is arranged to extend upward from the end connected with the lower jaw connecting member.

[0012] Preferably, the first auxiliary positioning member and the second auxiliary positioning member are in the form of a columnar structure, which is an arc-shaped column structure or a straight rod structure.

[0013] Preferably, when the upper jaw positioning member and the lower jaw positioning member are indirectly assembled by a third auxiliary positioning member, the upper jaw positioning member and the lower jaw positioning member are arranged to extend along the lingual or labial side of the upper jaw support and the lower jaw support, respectively, and the two ends of the third auxiliary positioning member are connected with the upper jaw positioning member and the lower jaw positioning member, respectively, and at least one end of the third auxiliary positioning member is detachably connected with the upper jaw positioning member or the lower jaw positioning member by a concave-convex matching structure.

[0014] Preferably, the third auxiliary positioning member is in the form of a columnar structure, which is an arc-shaped column structure or a straight rod structure.

[0015] Preferably, the two ends of the third auxiliary positioning member are detachably connected with the upper jaw positioning member and the lower jaw positioning member by a concave-convex matching structure. By arranging the two ends of the third auxiliary positioning member to be detachably connected, the third auxiliary positioning member can be adjusted and replaced, so that different target jaw positions can be adjusted and positioned according to clinical needs.

[0016] Preferably, the surface of the upper jaw positioning member and / or the lower jaw positioning member along the extending direction thereof and toward the opposite jaw positioning member is provided with a plurality of mounting portions that can be used to mount the third auxiliary positioning member, respectively, and the mounting portions are in the form of a protruding structure or a groove structure. The design of the plurality of mounting portions facilitates the adjustment of the mounting position of the third auxiliary positioning member according to clinical needs, so that different target jaw positions can be adjusted and positioned.

[0017] Preferably, when the mounting portions are in the form of a groove structure, the radial depths of different groove structures are different. By the radial depths of different groove structures, different jaw height can be adjusted.

[0018] Preferably, the composite dental arch model includes a plurality of third auxiliary positioning members of different heights, and the third auxiliary positioning members of different heights can position the upper and lower jaws of the composite dental arch model to positions corresponding to different jaw height positions of a patient. By replacing the third auxiliary positioning members of different heights, different jaw height can be adjusted.

[0019] Preferably, the upper jaw positioning member and the upper jaw support part are detachably connected through a concave-convex matching structure, and / or the lower jaw positioning member and the lower jaw support part are detachably connected through a concave-convex matching structure. The design of such detachable structure, on the one hand, facilitates the adjustment of the installation position of the upper jaw positioning member and the lower jaw positioning member or the replacement of the upper jaw positioning member and the lower jaw positioning member to meet the needs of positioning different jaw positions, and on the other hand, when the heat-pressed film obtains the corresponding shell-shaped dental instrument, the upper jaw positioning member and the lower jaw positioning member do not need to be installed, which facilitates the film pressing and prying and cutting; and when the jaw position is positioned, the upper jaw positioning member and the lower jaw positioning member are installed again, which facilitates accurate copying and positioning of the target jaw position relationship.

[0020] Preferably, the composite dental arch model comprises a plurality of different positioning assemblies, different upper jaw positioning members and / or lower jaw positioning members are different from the connection points of the same jaw support part; or, different upper jaw positioning members and / or lower jaw positioning members are different in length; so as to position the upper and lower jaws of the composite dental arch model to the positions corresponding to different target jaw positions of the patient.

[0021] To achieve the above-mentioned purpose, the application further provides a design method of a composite dental arch digital model, comprising:

[0022] obtaining a dental arch digital model of a patient and target occlusal relationship information, wherein the dental arch digital model comprises a tooth part model and a support part model supporting the tooth part model, the dental arch digital model comprises an upper jaw dental arch digital model and a lower jaw dental arch digital model, and the support part model comprises an upper jaw support part model and a lower jaw support part model;

[0023] based on the target occlusal relationship information, selecting a positioning assembly model with a predetermined shape and size, the positioning assembly model comprising an upper jaw positioning member model and a lower jaw positioning member model;

[0024] obtaining addition position information of the positioning assembly model on the support part model, the addition position information comprising addition position information of the upper jaw positioning member model on the upper jaw support part model and addition position information of the lower jaw positioning member model on the lower jaw support part model;

[0025] Based on the adding position information, corresponding detachable concave-convex matching structures are generated at corresponding positions of the upper jaw support part model and the upper jaw positioning part model, and corresponding detachable concave-convex matching structures are generated at corresponding positions of the lower jaw support part model and the lower jaw positioning part model, thereby generating a split composite dental arch digital model, which comprises the dental arch digital model and the positioning assembly model, wherein the upper jaw positioning part model and the lower jaw positioning part model can position the upper and lower jaws of the dental arch digital model to the corresponding positions of the target jaw position of the patient after being directly assembled or indirectly assembled.

[0026] Preferably, the target occlusion relationship information comprises:

[0027] The target occlusion relationship information is directly obtained by scanning the oral cavity and teeth of the patient in the target occlusion relationship by using a three-dimensional scanning device.

[0028] Preferably, the target occlusion relationship information comprises:

[0029] The first occlusion relationship information when the patient is in the maximum occlusion position is obtained.

[0030] The second occlusion relationship information when the lower jaw of the patient is in the maximum protrusion position is obtained.

[0031] The maximum protrusion amount of the lower jaw of the patient is calculated based on the first occlusion relationship information and the second occlusion relationship information.

[0032] The target protrusion amount is obtained according to the maximum protrusion amount, wherein the target protrusion amount is 60%-75% of the maximum protrusion amount of the lower jaw.

[0033] The target occlusion relationship information when the patient is in the target protrusion position is obtained based on the target protrusion amount.

[0034] To achieve the above-mentioned purposes, the application further provides a manufacturing method of a dental instrument, comprising:

[0035] Based on the design method of the composite dental arch digital model according to any one of the above-mentioned embodiments, a split dental arch entity model and a positioning assembly entity model are obtained.

[0036] Based on the dental arch entity model, a shell-shaped dental instrument is obtained by a hot-pressing film process and cutting, or based on the dental arch digital model, a shell-shaped dental instrument digital model is designed, and a shell-shaped dental instrument is obtained by 3D printing, wherein the shell-shaped dental instrument comprises an upper jaw shell-shaped dental instrument and a lower jaw shell-shaped dental instrument.

[0037] The shell-shaped dental instrument is arranged on the dental arch physical model, and the positioning component physical model is assembled on the dental arch physical model to obtain a shell-shaped dental instrument with the target occlusion relationship information.

[0038] An accessory capable of positioning the target occlusion relationship is added to the maxillary shell-shaped dental instrument and / or the mandibular shell-shaped dental instrument to obtain the dental instrument. The manufacturing method can manufacture a split shell-shaped dental instrument and a positioning component physical model respectively. Even if the shell-shaped dental instrument is manufactured by a hot stamping film process, only one set of dental arch physical model and one set of positioning component model need to be printed. The composite dental arch model is formed by assembling the two physical models, so that the target jaw position relationship of the patient can be positioned by the composite dental arch model. This method can save the raw materials for 3D printing of the dental arch physical model and save costs.

[0039] Preferably, the accessory is a front tooth locking structure arranged in the anterior tooth area of the maxillary shell-shaped dental instrument or the mandibular shell-shaped dental instrument; or,

[0040] The accessory is a pair of jaw pad structures arranged on the corresponding positions of the occlusal surfaces of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument and matched with each other, or a pair of locking structures or connecting rod structures arranged on the corresponding positions of the buccal sides or lingual sides of the maxillary shell-shaped dental instrument and the mandibular dental instrument and matched with each other; or,

[0041] The accessory is an adhesive structure formed by adhesive setting on the corresponding positions of the occlusal surfaces of the posterior tooth areas of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument. The adhesive structure can fix the relative position relationship of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument at the target occlusion relationship.

[0042] To achieve the above-mentioned purpose, the application further provides a design method of a composite dental arch digital model, comprising:

[0043] Obtaining a dental arch digital model of a patient and target occlusion relationship information, wherein the dental arch model comprises a tooth part model and a support part model supporting the tooth part model, the dental arch digital model comprises a maxillary dental arch digital model and a mandibular dental arch digital model, and the support part model comprises a maxillary support part model and a mandibular support part model;

[0044] Based on the target occlusion relationship information, a positioning component model with a predetermined shape and size is selected, and the positioning component model comprises a maxillary positioning component model and a mandibular positioning component model;

[0045] obtaining an adding position information of the positioning component model on the support part model, the adding position information comprising an adding position information of the maxillary positioning part model on the maxillary support part model and an adding position information of the mandibular positioning part model on the mandibular support part model;

[0046] adding the maxillary positioning part model on the maxillary support part model and adding the mandibular positioning part model on the mandibular support part model to generate the integrated composite dental arch digital model, wherein the maxillary positioning part model and the mandibular positioning part model are directly assembled or indirectly assembled to position the upper and lower arches of the dental arch digital model to the corresponding positions of the target jaw position of the patient.

[0047] Preferably, the obtaining of the target occlusion relationship information comprises:

[0048] scanning the oral cavity and teeth of the patient in the target occlusion relationship by using a three-dimensional scanning device to directly obtain the target occlusion relationship information.

[0049] Preferably, the obtaining of the target occlusion relationship information comprises:

[0050] obtaining first occlusion relationship information when the patient is in a maximum occlusion position;

[0051] obtaining second occlusion relationship information when the mandible of the patient is in a maximum protrusion position;

[0052] calculating a maximum protrusion amount of the mandible of the patient based on the first occlusion relationship information and the second occlusion relationship information;

[0053] calculating a target protrusion amount based on the maximum protrusion amount, wherein the target protrusion amount is 60%-75% of the maximum protrusion amount of the mandible;

[0054] obtaining target occlusion relationship information when the patient is in the target protrusion position based on the target protrusion amount.

[0055] Preferably, the adding of the maxillary positioning part model on the maxillary support part model and the adding of the mandibular positioning part model on the mandibular support part model to generate the integrated composite dental arch digital model comprises:

[0056] performing collision detection on the tooth part model and the positioning component model after adding the maxillary positioning part model on the maxillary support part model and after adding the mandibular positioning part model on the mandibular support part model;

[0057] When the positioning component model and the tooth part model collide, the added position information of the positioning component model is adjusted until no collision occurs, and an integrated composite dental arch digital model is generated.

[0058] To achieve the above object, the application further provides a method for manufacturing dental instruments, comprising:

[0059] Based on the design method of the composite dental arch digital model according to any one of the above, an integrated composite dental arch solid model is obtained.

[0060] A shell-shaped dental instrument is obtained, the arrangement of the tooth row contained in the cavity of the shell-shaped dental instrument is consistent with the arrangement of the tooth row corresponding to the integrated composite dental arch solid model, and the shell-shaped dental instrument comprises a maxillary shell-shaped dental instrument and a mandibular shell-shaped dental instrument.

[0061] The shell-shaped dental instrument is sleeved on the integrated composite dental arch solid model, an accessory capable of positioning the target occlusal relationship is added on the maxillary shell-shaped dental instrument and / or the mandibular shell-shaped dental instrument, and the dental instrument is obtained.

[0062] Preferably, the accessory is a front tooth locking structure arranged in the anterior tooth area of the maxillary shell-shaped dental instrument or the mandibular shell-shaped dental instrument; or,

[0063] The accessory is a pair of jaw pad structures arranged on the corresponding positions of the occlusal surfaces of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument and cooperating with each other, or a pair of locking structures or connecting rod structures arranged on the corresponding positions of the buccal sides or lingual sides of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument and cooperating with each other; or,

[0064] The accessory is an adhesive structure formed by adhesive condensation arranged on the corresponding positions of the occlusal surfaces of the posterior tooth areas of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument, and the adhesive structure can fix the relative positional relationship of the maxillary shell-shaped dental instrument and the mandibular shell-shaped dental instrument at the target occlusal relationship. BRIEF DESCRIPTION OF DRAWINGS

[0065] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only and are not intended to limit the application, elements having the same reference numerals designate similar elements throughout the several views, and the drawings are not to scale unless otherwise specified.

[0066] Figure 1 The structure of the composite dental arch model in an embodiment of the application is shown in the figure.

[0067] Figures 2 to 4 The structure of the composite dental arch model in another embodiment of the application is shown in the figure.

[0068] Figures 5 to 9 Structure diagram of the upper jaw dental arch model in some embodiments of the present application;

[0069] Figures 10 to 12 Structure diagram of the lower jaw maximum protrusion of the patient in some embodiments of the present application;

[0070] Figure 13 Sectional diagram of the positioning assembly in some embodiments of the present application;

[0071] Figure 14 Sectional diagram of the upper jaw positioning member and the third auxiliary positioning member in some embodiments of the present application;

[0072] Figure 15 Structure diagram of the multiple mounting portions in some embodiments of the present application;

[0073] Figure 16 And Figure 17 Sectional diagram of the positioning assembly in some embodiments of the present application;

[0074] Figure 18 Structure diagram of the upper jaw dental arch model in some embodiments of the present application;

[0075] Figure 19 Flowchart of the design method of the composite dental arch digital model in some embodiments of the present application;

[0076] Figures 20 to 23 Structure diagram of the lower jaw of the patient in different relative positions with respect to the upper jaw in some embodiments of the present application;

[0077] Figure 24 Flowchart of the manufacturing method of the dental appliance in some embodiments of the present application;

[0078] Figure 25 Structure diagram of the split composite dental arch digital model in some embodiments of the present application;

[0079] Figures 26 to 29 Structure diagram of the accessory in some embodiments of the present application;

[0080] Figure 30 Flowchart of the design method of the composite dental arch digital model in some embodiments of the present application;

[0081] Figure 31 Flowchart of the manufacturing method of the dental appliance in some embodiments of the present application. DETAILED DESCRIPTION

[0082] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be used to specifically describe the embodiments of the present application with reference to the accompanying drawings. However, it should be understood by those skilled in the art that, in the embodiments of the present application, many technical details are presented in order to make the present application better understood by the readers. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments. The division of the following embodiments is for the convenience of description, and should not constitute any limitation on the specific implementation of the present application.

[0083] The directional terms such as "upper", "lower", "left", "right" and the like used in the description herein are the directions in the drawings, and do not refer to specific limitations. Unless otherwise explicitly specified and limited, the term "connection" in the present application should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral, and can be directly connected or indirectly connected through an intermediate medium.

[0084] The "posterior teeth region" mentioned in the embodiments of the present application is defined according to the classification of teeth in the "Introduction to Oral Medicine", 2nd Edition, pp. 36-38, published by Peking University Medical Press, and includes premolars and molars, which are shown as teeth 4-8 in FDI marking method, and the teeth in anterior teeth region are shown as teeth 1-3 in FDI marking method. The teeth in anterior teeth region include central incisors, lateral incisors and canines.

[0085] As known from the background art, the jaw position information cannot be reflected in the processing of the shell-shaped dental instrument, especially for the shell-shaped dental instrument used for jaw reconstruction or snoring prevention. In the target jaw position, the upper and lower teeth are usually not in contact or in point contact in the anterior teeth, and the posterior teeth are not in contact. In this case, if the upper and lower shell-shaped dental instruments formed by separate processing cannot accurately position the required jaw position relationship, the shell-shaped dental instrument with jaw position cannot be obtained, and the target jaw position cannot be accurately positioned, which ultimately leads to the failure to achieve the expected orthodontic effect.

[0086] Therefore, the applicant proposes a composite dental jaw model, which comprises an upper dental jaw model, a lower dental jaw model and a positioning assembly capable of locking the relative position relationship of the upper and lower jaws; the upper dental jaw model comprises an upper dental tooth part and an upper jaw support part supporting the upper dental tooth part; the lower dental jaw model comprises a lower dental tooth part and a lower jaw support part supporting the lower dental tooth part; the positioning assembly comprises an upper jaw positioning member connected with the upper jaw support part and a lower jaw positioning member connected with the lower jaw support part; wherein after the upper jaw positioning member and the lower jaw positioning member are directly assembled or indirectly assembled, the relative position of the upper and lower jaws of the composite dental jaw model can be positioned to the corresponding position of the target jaw position of the patient.

[0087] Please refer to Figures 1 to 12As shown, the composite dental model 100 of the present application comprises a maxillary dental model 1, a mandibular dental model 2 and a positioning assembly 3, which is capable of locking the relative position relationship of the maxillary dental model 1 and the mandibular dental model 2, and the locked relative position relationship is consistent with the relative position relationship of the upper and lower jaws of the patient when the upper and lower jaws are in the target jaw position. The maxillary dental model 1 comprises a maxillary tooth part 11 and a maxillary support part capable of supporting the maxillary tooth part 11, and the mandibular dental model 2 comprises a mandibular tooth part 21 and a mandibular support part capable of supporting the mandibular tooth part 21, wherein the tooth layout of the maxillary tooth part 11 and the mandibular tooth part 21 is consistent with the tooth layout of the patient. The positioning assembly 3 comprises a maxillary positioning member 31 connected with the maxillary support part and a mandibular positioning member 32 connected with the mandibular support part; wherein the maxillary positioning member 31 and the mandibular positioning member 32 can be directly assembled or indirectly assembled, and after assembly, the upper and lower jaws of the composite dental model 100 can be positioned to the position corresponding to the upper and lower jaws of the patient when the upper and lower jaws are in the target jaw position. Wherein, the target jaw position can be any state of the jaw position relationship required by the clinician, and the common ones are the jaw position relationship when the patient is in the maximum occlusion position, and the jaw position relationship when the patient's mandible is in the maximum protrusion position, or the target jaw position after the clinician determines the jaw position reconstruction.

[0088] In some embodiments, please continue to read Figures 1 to 3 As shown, the maxillary support part and the mandibular support part are respectively a maxillary gingival part 12 consistent with the maxillary gingival morphology of the patient and a mandibular gingival part 22 consistent with the mandibular gingival morphology of the patient; the maxillary positioning member 31 is connected to the maxillary gingival part 12, and the mandibular positioning member 32 is connected to the mandibular gingival part 22. Such upper and lower jaw support part structure is simple and easy to make, for example, when the patient performs oral scanning, the gingival part can be directly obtained by simultaneous scanning, or the virtual gingival part can be generated in the design software according to the tooth part information. It can be understood that the upper and lower jaw support parts also do not need to match the upper and lower jaw gingiva, but directly add the corresponding upper and lower jaw support structures, such as support plate structures, in the design software automatically or manually after oral scanning.

[0089] In some other embodiments, please continue to read Figure 4 As shown, the maxillary support part comprises a maxillary gingival part 12 consistent with the maxillary gingival morphology of the patient and a maxillary support plate 13 connected to the bottom surface of the maxillary gingival part 12 away from the maxillary tooth part 11, and at this time, the maxillary positioning member 31 is arranged on the maxillary support plate 13; the mandibular support part comprises a mandibular gingival part 22 consistent with the mandibular gingival morphology of the patient and a mandibular support plate 23 connected to the bottom surface of the mandibular gingival part 22 away from the mandibular tooth part 21, and at this time, the mandibular positioning member 32 is arranged on the mandibular support plate 23.

[0090] In some embodiments, the first end of the upper jaw positioning member 31 is connected to the lingual side or labial side of the upper jaw support part, and one end of the lower jaw positioning member 32 is connected to the lingual side or labial side of the lower jaw support part. In order to ensure the stable assembly of the upper jaw positioning member 31 and the lower jaw positioning member 32, the upper jaw positioning member 31 forms at least three non-collinear connection points on the upper jaw support part, and the lower jaw positioning member 32 forms corresponding lower jaw connection points on the lower jaw support part. At least three non-collinear connection points can make the connection of the upper jaw positioning member 31 and the upper jaw support part more stable, so as to accurately reproduce and position the target jaw relationship. Of course, it can be understood that in other embodiments, the connection points can also be 1 or 2, for example, when the connection points are 1, the present application sets the connection point at the center of the lingual side of the upper jaw dental arch model or the lower jaw dental arch model; when the connection points are 2, the present application sets the two connection points in the anterior and posterior tooth regions respectively; but preferably, the upper jaw support part and the lower jaw support part at this time respectively include a support plate structure arranged on the bottom surface of the same jaw gingival part away from the same jaw tooth part. This design is simple in structure, but from the stability point of view, it is not as stable as three connection points; in other embodiments, the connection points can also be 4 or 5 or more, at least one non-collinear connection point is arranged, and more than 3 connection points can ensure stability, however, it will increase the complexity of the structure, and involve more raw materials, so in clinical practice, in the positioning stability and structural simplification, it is preferred to set three non-collinear connection points.

[0091] In order to illustrate the setting position of the connection points, please refer to Figures 5 to 9 As shown in the figure, the upper jaw dental arch model 1 is taken as an example for illustration, it should be noted that the connection points on the lower jaw dental arch model 2 and the connection points on the upper jaw dental arch model 1 have a one-to-one correspondence, so the present application specification is not repeated. Specifically, in some embodiments, as shown in the figure, Figure 5 The upper jaw support part is the upper jaw gingival part 12 consistent with the shape of the upper jaw gingival part, the first end of the upper jaw positioning member 31 is connected to the labial side of the anterior tooth region of the upper jaw gingival part 12 to form a first connection point A located in the anterior tooth region, and the upper jaw positioning member 31 is connected to the buccal side of the posterior tooth region on both sides to form a second connection point B and a third connection point C located in the posterior tooth region respectively. In other embodiments, as shown in the figure, Figure 6As shown, the maxillary support part is a maxillary gingival part 12 consistent with the shape of the maxillary gingiva, the first end of the maxillary positioning member 31 is connected to the labial side of the anterior region of the maxillary gingival part 12 to form a first connection point A, and the maxillary positioning member 31 is connected to the distal end of the last tooth on both sides of the posterior region to form a second connection point B and a third connection point C, respectively. In other embodiments, as shown in Figure 7 As shown, the maxillary support part includes a maxillary gingival part 12 consistent with the shape of the maxillary gingiva, the first end of the maxillary positioning member 31 is connected to the labial side of the anterior region of the maxillary gingival part 12 to form a first connection point A, and the maxillary positioning member 31 is connected to the buccal side of the posterior region of the maxillary gingival part 12 on both sides to form a second connection point B and a third connection point C, respectively. In other embodiments, as shown in Figure 8 As shown, the maxillary support part is a maxillary gingival part 12 consistent with the shape of the maxillary gingiva, the first end of the maxillary positioning member 31 is connected to the labial side of the anterior region of the maxillary gingival part 12 to form a first connection point A, and the maxillary positioning member 31 is connected to the distal end of the last tooth on both sides of the posterior region to form a second connection point B and a third connection point C, respectively. In other embodiments, as shown in Figure 9 As shown, the maxillary support part includes a maxillary gingival part 12 consistent with the shape of the maxillary gingiva, and a maxillary support plate 13 connected to the bottom surface of the maxillary gingival part 12 away from the maxillary tooth part 11, and the three connection points are formed by the connection of the maxillary positioning member 31 and the maxillary support plate 13.

[0092] In other embodiments, the second connection point B and the third connection point C formed in the posterior region of the compound dental arch model can be symmetrically arranged about the dental midline. This symmetric arrangement can obtain a more stable support.

[0093] In some embodiments, please continue to refer to Figures 1 to 3As shown, the maxillary positioning component 31 and the mandibular positioning component 32 are directly assembled. The maxillary positioning component 31 includes a maxillary connector 311 connected to the maxillary support and a first auxiliary positioning component 312 integrally connected to the maxillary connector 311. In this embodiment, the maxillary connector 311 is a rod-shaped structure disposed on the labial side of the maxillary gingival portion 12 and on the distal side of the last tooth model in the posterior tooth region along the dental arch direction. The first auxiliary positioning component 312 is integrally disposed on the maxillary connector 311. The mandibular positioning member 32 is located away from the maxillary gingival portion 12 and extends downwards. It includes a mandibular connector 321 connected to the mandibular support portion and a second auxiliary positioning member 322 integrally connected to the mandibular connector 321. The mandibular connector 321 is a rod-shaped structure located on the labial side of the mandibular gingival portion 22 and along the dental arch in the posterior region, on the distal side of the model of the last tooth in the posterior region. The extension direction of the mandibular connector 321 is consistent with the extension direction of the maxillary connector 311. The first auxiliary positioning member 312 and the second auxiliary positioning member 322 each have a corresponding concave-convex matching structure 4, which can be configured as follows: Figure 1 and Figure 3 As shown, the free end of the first auxiliary positioning member 312 facing the mandible has a protruding structure, and the corresponding position of the free end of the second auxiliary positioning member 322 facing the maxilla has a groove structure matching the protruding structure. Of course, it is understood that the free end of the first auxiliary positioning member 312 facing the mandible can also have a groove structure, and the corresponding position of the free end of the second auxiliary positioning member 322 facing the maxilla can also have a protruding structure matching the groove structure. Alternatively, as shown... Figure 2 As shown, the first auxiliary positioning member 312 has a raised structure on its tongue-facing side surface near its free end, and the second auxiliary positioning member 322 has a recessed groove structure matching the raised structure on its lip-facing side surface near its free end. Alternatively, a raised structure can be recessed on the tongue-facing side surface of the first auxiliary positioning member 312, and a raised structure matching the groove structure can be raised on the lip-facing side surface of the second auxiliary positioning member 322. Or, corresponding concave-convex matching structures 4 can be provided on the lip-facing side surface of the first auxiliary positioning member 312 and the tongue-facing side surface of the second auxiliary positioning member 322.

[0094] Further, the matching refers to that the shape and size of the groove structure are consistent with the shape and size of the convex structure, and when the groove structure and the convex structure are matched, the first auxiliary positioning member 312 and the second auxiliary positioning member 322 can be stably connected together to firmly lock the relative position relationship of the upper jaw dental model 1 and the lower jaw model. The convex structure as a whole can be spherical, cylindrical or polygonal prism.

[0095] Further, the first auxiliary positioning member 312 and the second auxiliary positioning member 322 are columnar structures as a whole, which can be straight rod structures as shown in Figure 1 Figure 2 or arc-shaped structures as shown in Figure 3 The arc-shaped structure can avoid collision with the upper and lower jaw dental models 2.

[0096] In other embodiments, please refer to Figures 10 to 12 When the upper jaw positioning member 31 and the lower jaw positioning member 32 are indirectly assembled through the third auxiliary positioning member 33, the upper jaw positioning member 31 and the lower jaw positioning member 32 are respectively arranged in correspondence with the lingual side or the labial side of the upper jaw support part and the lower jaw support part, the two ends of the third auxiliary positioning member 33 are respectively connected with the upper jaw positioning member 31 and the lower jaw positioning member 32, and at least one end of the third auxiliary positioning member 33 is detachably connected with the upper jaw positioning member 31 or the lower jaw positioning member 32 through the concave-convex matching structure 4. The third auxiliary positioning member 33 can have one end detachably connected with the corresponding upper jaw positioning member 31 or lower jaw positioning member 32 through the concave-convex matching structure 4, or both ends can be detachably connected with the upper jaw positioning member 31 and the lower jaw positioning member 32.

[0097] In some embodiments, each pair of concave-convex matching structures 4 includes a convex structure and a groove structure matched with the convex structure, wherein the groove structure has an opening structure near one end of the convex structure, the groove structure is provided with a receiving cavity, and the convex structure is detachably inserted with the receiving cavity through the opening structure. Please refer to Figure 13 Figure 14 The upper jaw positioning member 31 and / or the lower jaw positioning member 32 is provided with a groove structure on the side surface facing the opposite jaw.

[0098] In some embodiments, please continue to refer to Figure 14 ​​As shown, the side wall of the accommodating cavity has a first inclined portion 50, so that the cross-sectional area of the accommodating cavity gradually decreases in the direction away from the opening structure, and the cross section as a whole is trapezoidal; the protruding structure has a second inclined portion 40, which is in parallel contact with the first inclined portion 50, so that the protruding structure and the groove structure can be stably and conveniently installed and disassembled.

[0099] In some embodiments, when the two ends of the third auxiliary positioning member 33 are detachably connected, there can be multiple third auxiliary positioning members 33, and the multiple third auxiliary positioning members 33 have different heights or shapes, and different third auxiliary positioning members 33 are used according to different target jaw positions, such as Figure 10 For the first target jaw position, when the same dental model needs a second target jaw position, the composite dental model 100 can be adjusted by replacing the third auxiliary positioning member 33 with a different shape, such as Figure 12 As shown, the third auxiliary positioning member 33 connected to the anterior tooth area is in a bent columnar structure, which can guide the mandible forward to a jaw position that is more forward in the sagittal direction. In other embodiments, the effective jaw height between the upper and lower jaws can also be adjusted by using third auxiliary positioning members 33 with different heights.

[0100] In some embodiments, the upper jaw positioning member 31 and / or the lower jaw positioning member 32 are provided with multiple mounting portions 5 along the extension direction thereof and spaced apart from the surface of the opposing jaw positioning member, which can be used to mount the third auxiliary positioning member 33, and the mounting portion 5 is a protruding structure (not shown) or a groove structure (as shown in Figure 15 ).

[0101] In some embodiments, please refer to Figure 16 and Figure 17 As shown, when the multiple mounting portions 5 are groove structures, the radial depths of different groove structures are different, and in clinical practice, only one third auxiliary positioning member can be provided under this design, and the doctor can also adjust the jaw height of the composite dental model by selecting different groove structures, and at this time, the effective height of the jaw position is determined by the height of the third auxiliary positioning member 33 and the radial depth of the groove structure. This structural design can not only reduce the use of raw materials without increasing the number of components, but also make the composite dental model 100 meet more jaw position requirements, and according to different jaw position requirements, the position of the third auxiliary positioning member can be adjusted, that is, the groove structure with different radial depths is selected for installation. Among them, respectively Figure 16 and Figure 17 are described in detail, specifically in Figure 16 and Figure 17 .The same is the auxiliary positioning member 33, the height h is consistent, and the radial depths (h1 and h2, respectively) of the two groove structures (5a and 5b, respectively) are different. When the auxiliary positioning member 33 is installed in the groove structure 5a, the effective height H1 of the jaw position is H1 = h-2*h1. When the auxiliary positioning member 33 is installed in the groove structure 5b, the effective height H2 of the jaw position satisfies the relationship H2 = h-2*h2. The greater the radial depth of the groove structure, the smaller the effective height of the jaw position. At this time, the height of the target jaw position of the compound dental arch model 100 is smaller. Conversely, it is larger. Although the height h of the third auxiliary positioning member 33 is consistent, by installing the third auxiliary positioning member 33 in different groove structures, the effective height of the jaw position can be adjusted without increasing the third auxiliary positioning member.

[0102] In some embodiments, the upper jaw positioning member 31 and the upper jaw support part can also be detachably connected through the concave-convex matching structure 4, and the lower jaw positioning member 32 and the lower jaw support part can also be detachably connected through the concave-convex matching structure 4. The concave-convex matching structure 4 is set as described above, and will not be described here. In this embodiment, the compound dental arch model 100 includes multiple different positioning assemblies 3, which can be realized by different settings. In some embodiments, referring to Figure 18 As shown in the upper jaw dental arch model 1, the letters A, B, C, D, E, F, G, H, and I in the figure are used to show the setting positions of the connection points, combination one (A, B, C), combination two (D, E, F), and combination three (G, H, I) respectively show three different connection point combinations. Of course, it is not limited to this fixed combination usage mode, for example, A, D, I or B, E, F and other connection point combinations can also be used. Different connection point combinations are used to adjust the jaw position relationship positioned by the compound dental arch model 100.

[0103] In other embodiments, different lengths of upper jaw positioning members and / or lower jaw positioning members can also be matched to position the relative positions of the upper and lower jaws of the compound dental arch model to the positions corresponding to different target jaw positions of the patient. For example, for the dental arch of the same patient, different jaw positions can be realized by replacing the lengths of the upper jaw positioning member and the lower jaw positioning member, such as the maximum crossbite position, the anterior incisal end-to-incisal end position, or the occlusion position when the lower jaw is stretched to the maximum forward position. That is, the relative position relationship between the upper and lower jaws in different requirements is positioned.

[0104] The application also provides a design method of a compound dental arch digital model, which is used to design the digital model of the compound dental arch model. The flowchart is shown in Figure 19The design method of the composite dental arch digital model can be applied to terminals with communication, calculation and data storage capabilities, such as computers, mobile phones and other electronic devices, and includes the following steps:

[0105] In step S101, the dental arch digital model of the patient refers to the dental arrangement state of the patient at a certain stage of the treatment process, which is used to guide the manufacture of the dental arch physical model. The dental arrangement state can be the initial dental arrangement state of the patient before treatment, that is, the three-dimensional data of the dental arrangement in the initial dental arrangement state, or the intermediate dental arrangement after a certain stage of treatment, or the final dental arrangement after final treatment. In the present application, in addition to obtaining the three-dimensional data of the patient at a certain stage, the target occlusal relationship information of the patient at this stage, that is, the relative occlusal relationship information of the upper and lower jaws, is also required.

[0106] In step S102, based on the target occlusal relationship information, a positioning component model of a predetermined shape and size is selected, which includes an upper jaw positioning member model and a lower jaw positioning member model.

[0107] In step S103, the addition position information of the positioning component model on the support part model is obtained, which includes the addition position information of the upper jaw positioning member model on the upper jaw support part model, and the addition position information of the lower jaw positioning member model on the lower jaw support part model.

[0108] In step S104, based on the addition position information, corresponding detachable concave-convex matching structures are generated at the corresponding positions of the upper jaw support part model and the upper jaw positioning member model, and corresponding detachable concave-convex matching structures are generated at the corresponding positions of the lower jaw support part model and the lower jaw positioning member model, to generate a split composite dental arch digital model, which includes the dental arch digital model and the positioning component model. After the upper jaw positioning member model and the lower jaw positioning member model are directly assembled or indirectly assembled, the upper and lower jaws of the dental arch digital model can be positioned to the corresponding positions of the target jaw position of the patient.

[0109] In step S101, the dental arch digital model of the patient refers to the dental arrangement state of the patient at a certain stage of the treatment process, which is used to guide the manufacture of the dental arch physical model. The dental arrangement state can be the initial dental arrangement state of the patient before treatment, that is, the three-dimensional data of the dental arrangement in the initial dental arrangement state, or the intermediate dental arrangement after a certain stage of treatment, or the final dental arrangement after final treatment. In the present application, in addition to obtaining the three-dimensional data of the patient at a certain stage, the target occlusal relationship information of the patient at this stage, that is, the relative occlusal relationship information of the upper and lower jaws, is also required.

[0110] In some embodiments, to obtain the digital dental model of the patient and the target occlusion information, first, a plaster dental model of the patient can be made according to the arrangement of the teeth of the patient in the target occlusion or the state of the teeth and the surrounding tissues (such as the gums, etc.) of the patient in the target occlusion, and the plaster model has the target occlusion information of the patient in the current state. Then, the plaster dental model is scanned to generate a digital dental model of the patient in the target occlusion. Of course, the image of the arrangement of the teeth of the patient in the target occlusion or the image of the teeth and the surrounding tissues of the patient in the target occlusion can also be directly obtained by optical scanning, three-dimensional photography, three-dimensional imaging, or medical CT scanning, and the digital dental model and the target occlusion information can be obtained by computer processing. For example, the teeth of the patient can be scanned by cone beam CT (CBCT) to obtain a digital dental model of the patient including the tooth crown, tooth neck, and tooth root.

[0111] In other embodiments, the digital dental model of the patient in a certain state and the target occlusion information can be obtained by the following method. The target occlusion information can satisfy the position of the mandible of the patient in the forward protrusion to the position sufficient to open the airway and inhibit snoring when the patient is sleeping. For reference, see Figures 20 to 23 As shown, the method comprises the following steps:

[0112] First, the first occlusion information when the patient is in the maximum occlusion position W1 and the second occlusion information when the mandible of the patient is in the maximum protrusion position W2 are obtained respectively;

[0113] Then, the maximum protrusion amount L of the mandible of the patient is calculated based on the first occlusion information and the second occlusion information;

[0114] Then, the target protrusion amount is obtained according to the maximum protrusion amount L, wherein the target protrusion amount is 60%-75% of the maximum protrusion amount L of the mandible;

[0115] Finally, the target occlusion information of the patient in the target protrusion position W is obtained based on the target protrusion amount.

[0116] The method for obtaining the first occlusion information and the second occlusion information can be obtained by measuring in the mouth of the patient by hand, or the required occlusion information can be manually inputted by hand. The digital dental model of the patient in the first occlusion state and the digital dental model of the patient in the second occlusion state can be obtained by the method of the above embodiments, that is, the plaster model can be obtained first, and then the plaster model is scanned to obtain the digital dental model. The image of the arrangement of the teeth of the patient in the first occlusion state or the second occlusion state or the image of the teeth and the surrounding tissues of the patient can also be directly obtained by optical scanning, three-dimensional photography, three-dimensional imaging, or medical CT scanning, and the digital dental model and the target occlusion information can be obtained by computer processing. Here, the details are not repeated.

[0117] In step S102, based on the target occlusal relationship information, a positioning component model of a predetermined shape and size is selected. This can be done by the medical designer directly selecting a positioning component model of a predetermined shape and size that meets the requirements from the existing positioning component model library in the design library; or the medical designer can obtain the positioning component model of a predetermined shape and size by calculating according to certain medical rules. The medical rules used for calculation can be parameters manually input by the medical designer based on clinical experience, or they can be obtained based on algorithm calculation.

[0118] In step S103, the acquisition of the added location information can be achieved by the medical designer manually adding the positioning component model to the dental digital model. Similarly, the added location information can also be obtained by the medical designer according to certain medical rules. The medical rules used for the calculation can be parameters manually input by the medical designer based on clinical experience, or they can be obtained based on algorithmic calculation logic.

[0119] In step S104, see [link / reference] Figure 25 As shown, based on the acquired addition location information, a split composite dental digital model is obtained. This split composite dental digital model includes the dental digital model 9 and the positioning component model 8. The positioning component model 8 includes a maxillary positioning component model and a mandibular positioning component model. In application, the split composite dental digital model can be used alone. For example, a shell-shaped dental instrument can be made using a thermoforming process, and the layout of the dentition contained in the several cavities of the shell-shaped dental instrument is consistent with the dentition layout of the dental digital model. Alternatively, the maxillary positioning component model and the mandibular positioning component model can be directly or indirectly assembled to position the relative position of the maxilla and mandible of the dental digital model to the corresponding position of the patient's target jaw position.

[0120] This invention also provides a method for manufacturing a dental instrument. Using the aforementioned design method for a composite dental digital model, a dental instrument capable of locating the patient's target jaw position is manufactured. Please refer to the flowchart below. Figure 24 It includes the following steps:

[0121] Step S201: Based on the above-mentioned design method for composite dental digital model, obtain the separate dental solid model and the positioning component solid model;

[0122] For example, a dental solid model can be obtained directly by 3D printing based on the dental digital model, and a positioning component solid model can be obtained directly by printing based on the positioning component solid model.

[0123] In step S202, based on the dental arch entity model, the upper dental arch entity model and the lower dental arch entity model are obtained by hot pressing to obtain the upper shell dental appliance and the lower shell dental appliance containing the tooth arrangement; of course, the dental arch entity model can not be printed, but the digital model of the shell dental appliance is designed based on the dental arch digital model, and then the shell dental appliance is obtained by 3D printing based on the digital model of the shell dental appliance.

[0124] In step S203, the positioning component entity model is assembled on the dental arch entity model to form an assembled split composite dental arch model, so as to position the upper and lower jaw positions of the upper shell dental appliance and the lower shell dental appliance to the target jaw position relationship; then, the shell dental appliance is cut along the gum line or adjacent to the gum line on the upper shell dental appliance and the lower shell dental appliance containing the tooth arrangement, and positioned by the accessory capable of positioning the target occlusion relationship, and finally separated from the assembled split composite dental arch entity model to form the dental appliance with the target jaw position relationship.

[0125] In step S204, the accessory capable of positioning the target occlusion relationship is added to the upper shell dental appliance and / or the lower shell dental appliance to obtain the dental appliance.

[0126] In step S202, based on the dental arch entity model, the upper dental arch entity model and the lower dental arch entity model are obtained by hot pressing to obtain the upper shell dental appliance and the lower shell dental appliance containing the tooth arrangement; of course, the dental arch entity model can not be printed, but the digital model of the shell dental appliance is designed based on the dental arch digital model, and then the shell dental appliance is obtained by 3D printing based on the digital model of the shell dental appliance.

[0127] In step S203, the positioning component entity model is assembled on the dental arch entity model to form an assembled split composite dental arch model, so as to position the upper and lower jaw positions of the upper shell dental appliance and the lower shell dental appliance to the target jaw position relationship; then, the shell dental appliance is cut along the gum line or adjacent to the gum line on the upper shell dental appliance and the lower shell dental appliance containing the tooth arrangement, and positioned by the accessory capable of positioning the target occlusion relationship, and finally separated from the assembled split composite dental arch entity model to form the dental appliance with the target jaw position relationship.

[0128] Alternatively, the shell dental appliance is cut along the gum line or adjacent to the gum line on the upper shell dental appliance and the lower shell dental appliance containing the tooth arrangement based on the upper shell dental appliance and the lower shell dental appliance obtained by hot pressing in step S202; then, the positioning component entity model is assembled on the dental arch entity model to form an assembled split composite dental arch model, so as to position the upper and lower jaw positions of the upper shell dental appliance and the lower shell dental appliance to the target jaw position relationship; then, the accessory capable of positioning the target occlusion relationship is used for positioning, and finally separated from the assembled split composite dental arch entity model to form the dental appliance with the target jaw position relationship.

[0129] The production of the dental appliance with the target jaw relationship consistent with the split composite dental arch model by using the method for manufacturing the dental appliance in the embodiment only needs to print one set of the dental arch model of the patient. Through the dental arch model, on one hand, the film can be hot-pressed on the dental arch model to form the shell-shaped dental appliance, and the positioning assembly model can be directly or indirectly assembled on the dental arch model to position the relative position relationship between the upper and lower shell-shaped dental appliances to form the dental appliance. On the other hand, based on the same patient, only one set of the dental arch model needs to be printed, but the positioning assembly model can be designed and printed in multiple groups. At this time, the corresponding group of the positioning assembly model and the dental arch model can be selected and assembled according to the actual clinical needs to obtain different target jaw relationships. That is, without printing another dental arch model during production, the production of the dental appliance can save the raw materials for printing and save the process time, thereby improving the production efficiency.

[0130] Specifically, in some embodiments, the accessory can be a front tooth locking structure 71 arranged at the front tooth area of the upper shell-shaped dental appliance 10 or the lower shell-shaped dental appliance 2. Please refer to Figure 26 As shown in the figure, the front tooth locking structure 71 is arranged at the position of the front tooth area of the upper shell-shaped dental appliance 10, and the front tooth locking structure 71 is arranged in a convex manner from the upper front tooth area to the lower jaw direction, and respectively includes a lingual locking part and a labial locking part, wherein the lingual locking part and the labial locking part enclose a receiving space 70 capable of accommodating the teeth at the corresponding position of the lower front tooth area. When worn, at least the lingual surface of the teeth at the corresponding position of the lower front tooth area contacts the labial surface of the lingual locking part for limiting the sagittal backward retreat of the teeth of the lower front tooth area. When the teeth of the lower front tooth area of the patient are accommodated in the receiving space 70, the labial surface of the teeth at the corresponding position of the lower front tooth area can also abut against the lingual surface of the labial locking part. Such design can stably and firmly limit the teeth at the corresponding position of the lower front tooth area in the receiving space 70 in the sagittal direction, and can better limit the movement of the lower front tooth in the sagittal direction, so that the lower jaw is kept at the target jaw position required by the patient. Of course, in other embodiments, the front tooth locking structure of the front tooth area can also be arranged at the front tooth area of the lower shell-shaped dental appliance. After wearing, the teeth at the corresponding position of the upper front tooth area can be accommodated in the front tooth locking structure of the lower jaw, so as to also limit the backward movement of the lower jaw in the sagittal direction.

[0131] In other embodiments, as Figure 27As shown, the attachments can also be a pair of jaw pad structures (72a and 72b) arranged on the corresponding positions of the occlusal surfaces of the upper and lower shell dental appliances 10 and 20 and cooperating with each other. When the upper and lower shell dental appliances 10 and 20 are worn, the mesial surface of the upper jaw pad structure 72a arranged on the posterior region of the upper shell dental appliance 10 and facing the lower jaw and the distal surface of the lower jaw pad structure 72b arranged on the posterior region of the lower shell dental appliance 20 and facing the upper jaw interact with each other, guiding the sagittal forward movement of the lower jaw, guiding the protrusion of the lower jaw and keeping the lower jaw at the target jaw position required by the patient. The occlusion can also be opened, and the treatment effect is better especially for the Class II cases with a spee curve depth greater than 3 mm.

[0132] In other embodiments, the attachments can also be a pair of locking structures (73a and 73b) arranged on the corresponding positions of the buccal or lingual surfaces of the upper and lower shell dental appliances 10 and 20 and cooperating with each other, such as Figure 28 As shown, the cooperating locking structures (73a and 73b) are arranged on the buccal surfaces on both sides of the posterior regions of the upper and lower shell dental appliances 10 and 20 and lock with each other on the buccal sides of the upper and lower jaws, guiding the sagittal forward movement of the lower jaw, guiding the protrusion of the lower jaw and keeping the lower jaw at the target jaw position required by the patient. The cooperating locking structures (73a and 73b) have a better treatment effect especially for the Class II cases with a spee curve depth less than 3 mm. It can be understood that the cooperating locking structures (73a and 73b) can also be arranged on the lingual surfaces on both sides of the posterior regions of the upper and lower shell dental appliances 10 and 20.

[0133] In other embodiments, the attachments can also be a pair of connecting rod structures 74 arranged on the corresponding positions of the buccal or lingual surfaces of the upper and lower shell dental appliances 10 and 20, such as Figure 29 As shown, the two ends of the connecting rod structure 74 are arranged on the buccal surfaces of the upper and lower shell dental appliances, one end of which is arranged at a position close to the anterior teeth of the upper shell dental appliance 10 and the other end of which is arranged at a position close to the posterior teeth of the lower shell dental appliance 20. The two ends of the connecting rod structure 74 can be movably arranged or fixedly arranged on the upper and lower shell dental appliances 10 and 20, so that the lower jaw of the patient can be subjected to a sagittal forward force to limit the sagittal backward movement of the lower jaw of the patient, thereby keeping the lower jaw of the patient at the target sagittal forward jaw position. It can be understood that in some embodiments, the two ends of the connecting rod structure 74 can also be arranged on the lingual surfaces of the upper and lower shell dental appliances.

[0134] In some other embodiments, the accessory can also be an adhesive structure (not shown) formed by adhesive solidification at corresponding positions on the occlusal surfaces of the posterior tooth regions of the upper and lower shell dental appliances, which can fix the relative positional relationship of the upper and lower shell dental appliances at the target occlusal relationship. For example, a self-curing gel can be applied between the corresponding occlusal surfaces of the posterior tooth regions of the upper and lower shell dental appliances, and then pressed and compacted to solidify and form the dental appliances.

[0135] The present application also provides another method for designing a composite dental arch digital model, the flowchart of which is shown in Figure 30 The method for designing a composite dental arch digital model can be applied to terminals with communication, calculation and data storage capabilities, such as computers, mobile phones and other electronic devices, and includes the following steps:

[0136] In step S301, a dental arch digital model of a patient and target occlusal relationship information are obtained, wherein the dental arch digital model includes a tooth part model and a support part model supporting the tooth part model, the dental arch digital model includes an upper dental arch digital model and a lower dental arch digital model, and the support part model includes an upper support part model and a lower support part model.

[0137] In step S302, a positioning component model of a predetermined shape and size is selected based on the target occlusal relationship information, and the positioning component model includes an upper positioning member model and a lower positioning member model.

[0138] In step S303, addition position information of the positioning component model on the support part model is obtained, and the addition position information includes addition position information of the upper positioning member model on the upper support part model and addition position information of the lower positioning member model on the lower support part model.

[0139] In step S304, the upper positioning member model is added to the upper support part model, and the lower positioning member model is added to the lower support part model, to generate an integrated composite dental arch digital model, wherein the upper positioning member model and the lower positioning member model can position the upper and lower jaws of the dental arch digital model to corresponding positions of the target jaw position after being directly or indirectly assembled.

[0140] The difference between the embodiment and the design method of the composite dental arch digital model in the previous embodiment is that in step S304, based on the adding position information, the maxillary positioning part model and the mandibular positioning part model are directly added at the corresponding positions on the maxillary support part model and the mandibular support part model respectively, and a Boolean operation is performed to directly obtain the integrated composite dental arch digital model.

[0141] In some other embodiments, after step S304, the following steps can also be included:

[0142] Firstly, after adding the maxillary positioning part model on the maxillary support part model and adding the mandibular positioning part model on the mandibular support part model, collision detection is performed on the tooth part model and the positioning assembly model;

[0143] Secondly, when the positioning assembly model and the tooth part model collide, the adding position information of the positioning assembly model is adjusted until no collision occurs, and an integrated composite dental arch digital model is generated.

[0144] In the second step, when the positioning assembly model and the tooth part model do not collide, a Boolean operation is performed on the positioning assembly model and the dental arch digital model to directly generate an integrated composite dental arch digital model.

[0145] When the positioning assembly model and the tooth part model collide, the adding position information of the positioning assembly model needs to be adjusted, and collision detection is performed again until no collision occurs, and then a Boolean operation is performed on the positioning assembly model and the dental arch digital model to generate an integrated composite dental arch digital model.

[0146] The application also provides a dental instrument manufacturing method for manufacturing a dental arch instrument capable of positioning a target jaw position of a patient. The flowchart is shown in Figure 31 , and includes the following steps:

[0147] Step S401: based on the design method of the composite dental arch digital model, an integrated composite dental arch solid model is obtained;

[0148] Step S402: a shell-shaped dental instrument is obtained, the dentition layout contained in the cavity of the shell-shaped dental instrument is consistent with the dentition layout corresponding to the integrated composite dental arch solid model, and the shell-shaped dental instrument includes a maxillary shell-shaped dental instrument and a mandibular shell-shaped dental instrument;

[0149] Step S403: the shell-shaped dental instrument is sleeved on the integrated composite dental arch solid model, an accessory capable of positioning the target occlusal relationship is added on the maxillary shell-shaped dental instrument and / or the mandibular shell-shaped dental instrument, and the dental instrument is obtained.

[0150] In step S401, an integrated composite dental arch physical model is directly obtained by 3D printing based on the integrated composite dental arch digital model designed in the design method of the composite dental arch digital model; the integrated composite dental arch physical model is used to position the target jaw relationship of the upper and lower shell dental appliances.

[0151] In step S402, the shell dental appliance is obtained based on the dental arch digital model obtained in step S301 of the composite dental arch digital model design method described above; or the dental arch digital model is obtained by re-scanning, for example, scanning the patient's dentition layout information, etc., obtaining the dental arch digital model by first making a plaster dental arch model, then scanning the plaster dental arch model, or directly obtaining the patient's dentition layout information image by optical scanning, three-dimensional photography, three-dimensional video shooting or medical CT scanning, and obtaining the dental arch digital model after computer processing. Based on the obtained dental arch digital model, the dental arch physical model is directly obtained by 3D printing, and then the shell dental appliance is obtained by hot stamping film process and cutting; or based on the obtained dental arch digital model, the digital model of the shell dental appliance is designed, and then the shell dental appliance is directly obtained by 3D printing based on the digital model of the shell dental appliance. The cavity of the shell dental appliance obtained in step S402 contains the dentition layout consistent with the dentition layout corresponding to the integrated composite dental arch physical model, but does not have the target jaw information.

[0152] In step S403, the shell dental appliance is set on the integrated composite dental arch physical model, at which time the relative position relationship of the upper and lower shell dental appliances is positioned to the target jaw position; and the target occlusion relationship is positioned by the accessory capable of positioning the target occlusion relationship, and finally the integrated composite dental arch physical model is demolded to form the dental appliance with the target jaw relationship.

[0153] By using the dental appliance manufacturing method of the present embodiment, the composite dental arch physical model is integrally formed, avoiding the need to print the positioning component model, thereby avoiding the risk of inaccurate positioning of the target jaw position due to loss of the positioning component model, or the risk of prolonging the manufacturing time of the dental appliance due to the need to reprint the positioning component model due to loss of the positioning component model.

[0154] The accessory is consistent with the structure and arrangement of the accessory in the above embodiments, and will not be described again in the present embodiment.

[0155] To achieve the above object, the application further provides an electronic device, comprising: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the design method of the composite dental arch digital model according to any one of the above or execute the manufacturing method of the dental instrument according to any one of the above.

[0156] To achieve the above object, the application further provides a computer readable storage medium storing a computer program, and the computer program is executed by a processor to implement the design method of the composite dental arch digital model according to the above or implement the manufacturing method of the dental instrument according to the above.

[0157] It should be noted that the above embodiments can be freely combined as needed to form different new embodiments without causing contradictions, and the embodiments formed after the combination are within the protection scope of the application, and thus will not be described here again in order to save the length of the application text.

[0158] The above is only the preferred embodiment of the application, and it should be noted that, for those skilled in the art, without departing from the principles of the application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the application.

[0159] Similarly, the above is only the specific embodiment of the application, but the protection scope of the application is not limited to this, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered within the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A composite dental model, characterized by, The utility model relates to a kind of composite dental model and its positioning component, including: Maxillary dental model, mandibular dental model and the positioning component capable of locking the relative position relationship of upper and lower jaw; The maxillary dental model includes maxillary teeth part and the maxillary support part of supporting the maxillary teeth part; The mandibular dental model includes mandibular teeth part and the mandibular support part of supporting the mandibular teeth part; The positioning component includes the maxillary positioning member connected with the maxillary support part and the mandibular positioning member connected with the mandibular support part;Wherein, after the maxillary positioning member and the mandibular positioning member are directly assembled or indirectly assembled, the upper and lower jaw of the composite dental model can be positioned to the corresponding position of patient target jaw position relative position.

2. The composite dental model according to claim 1, wherein The maxillary support part is the maxillary gum part consistent with the morphology of patient maxillary gum, and the mandibular support part is the mandibular gum part consistent with the morphology of patient mandibular gum.

3. The composite dental model according to claim 2, wherein, One end of the maxillary positioning member is connected to the lingual side or labial side of the maxillary support part, forming at least three non-collinear connection point positions on the maxillary support part, and one end of the mandibular positioning member is connected to the lingual side or labial side of the mandibular support part, forming the connection point position of the mandibular corresponding to the connection point position of the maxillary on the mandibular support part.

4. The composite dental model according to claim 3, wherein The anterior tooth region of the support part of the same jaw is provided with a first connection point position, and the left and right sides of the posterior tooth region of the support part of the same jaw are respectively provided with a second connection point position and a third connection point position.

5. The composite dental model according to claim 1, wherein, When the maxillary positioning member and the mandibular positioning member are directly assembled, the maxillary positioning member includes a maxillary connecting member connected with the maxillary support part and a first auxiliary positioning member integrally connected with the maxillary connecting member, and the mandibular positioning member includes a mandibular connecting member connected with the mandibular support part and a second auxiliary positioning member integrally connected with the mandibular connecting member, wherein the first auxiliary positioning member and the second auxiliary positioning member are respectively provided with corresponding concave-convex matching structures.

6. The composite dental model according to claim 5, wherein The maxillary connecting member is arranged in the direction of the lingual side or labial side of the maxillary support part, the first auxiliary positioning member is arranged in the direction of the mandibular from one end connected with the maxillary connecting member, the mandibular connecting member is arranged in the direction of the lingual side or labial side of the mandibular support part, and is consistent with the extension direction of the maxillary connecting member, and the second auxiliary positioning member is arranged in the direction of the maxillary from one end connected with the mandibular connecting member.

7. The composite dental model according to claim 5, wherein The first auxiliary positioning member and the second auxiliary positioning member are in the form of a columnar structure, which is an arc-shaped column structure or a straight rod structure.

8. The composite dental model according to claim 1, wherein, When the maxillary positioning member and the mandibular positioning member are indirectly assembled through a third auxiliary positioning member, the maxillary positioning member and the mandibular positioning member are respectively arranged in the direction of the lingual side or labial side of the maxillary support part and the mandibular support part, the two ends of the third auxiliary positioning member are respectively connected with the maxillary positioning member and the mandibular positioning member, and at least one end of the third auxiliary positioning member is detachably connected with the maxillary positioning member or the mandibular positioning member through the concave-convex matching structure.

9. The composite dental model according to claim 8, wherein, The third auxiliary positioning member is in the form of a columnar structure, which is an arc-shaped column structure or a straight rod structure.

10. The composite dental model according to claim 8, wherein, The two ends of the third auxiliary positioning member are detachably connected to the upper jaw positioning member and the lower jaw positioning member through concave-convex matching structures.

11. The composite dental model according to claim 10, wherein, The upper jaw positioning member and / or the lower jaw positioning member are provided with a plurality of mounting portions for mounting the third auxiliary positioning member along the extension direction thereof and towards the surface of the opposite jaw positioning member, the mounting portions being in the form of protrusions or grooves.

12. The composite dental model according to claim 11, wherein, When the mounting portions are in the form of grooves, the radial depths of different grooves are different.

13. The composite dental model according to claim 10, wherein, The composite dental arch model comprises third auxiliary positioning members of different heights, and the third auxiliary positioning members of different heights can position the upper and lower jaws of the composite dental arch model to positions corresponding to different jaw height positions of the patient.

14. The composite dental model according to claim 1, wherein, The upper jaw positioning member and the upper jaw support portion are detachably connected through concave-convex matching structures, and / or the lower jaw positioning member and the lower jaw support portion are detachably connected through concave-convex matching structures.

15. The composite dental model according to claim 14, wherein, The composite dental arch model comprises a plurality of different positioning assemblies, different upper jaw positioning members and / or lower jaw positioning members are respectively connected to different connection points of the same jaw support portion, or the lengths of different upper jaw positioning members and / or lower jaw positioning members are different, so as to position the upper and lower jaws of the composite dental arch model to positions corresponding to different target jaw positions of the patient.

16. A method of designing a composite dental digital model, characterized in that, Comprise: Obtain the dental arch digital model and the target occlusion relationship information of the patient, wherein the dental arch digital model comprises a tooth part model and a support part model supporting the tooth part model, the dental arch digital model comprises an upper jaw dental arch digital model and a lower jaw dental arch digital model, and the support part model comprises an upper jaw support part model and a lower jaw support part model; Based on the target occlusion relationship information, select a positioning assembly model of a predetermined shape and size, the positioning assembly model comprising an upper jaw positioning member model and a lower jaw positioning member model; Obtain the addition position information of the positioning assembly model on the support part model, the addition position information comprising the addition position information of the upper jaw positioning member model on the upper jaw support part model and the addition position information of the lower jaw positioning member model on the lower jaw support part model; Based on the addition position information, generate corresponding detachable concave-convex matching structures at the corresponding positions of the upper jaw support part model and the upper jaw positioning member model, and generate corresponding detachable concave-convex matching structures at the corresponding positions of the lower jaw support part model and the lower jaw positioning member model, to generate a split composite dental arch digital model, the split composite dental arch digital model comprising the dental arch digital model and the positioning assembly model, wherein the upper jaw positioning member model and the lower jaw positioning member model can position the upper and lower jaws of the dental arch digital model to positions corresponding to the target jaw position of the patient after being directly assembled or indirectly assembled.

17. The method of designing a composite dental digital model according to claim 16, wherein, The target occlusion relationship information comprises: Directly obtaining the target occlusion relationship information by scanning the oral cavity and teeth of the patient in the target occlusion relationship using a three-dimensional scanning device.

18. The method of designing a composite dental digital model according to claim 16, wherein, The target occlusion relationship information comprises: Obtaining first occlusion relationship information when the patient is in a maximum occlusion position; obtaining second occlusal relationship information when the patient's lower jaw is in the maximum protrusion position; calculating the maximum protrusion amount of the patient's lower jaw based on the first occlusal relationship information and the second occlusal relationship information; obtaining a target protrusion amount according to the maximum protrusion amount, wherein the target protrusion amount is 60%-75% of the maximum protrusion amount of the lower jaw; obtaining target occlusal relationship information when the patient is in the target protrusion position based on the target protrusion amount.

19. A method of making a dental appliance, characterized by, The method comprises: obtaining a split dental arch physical model and a positioning component physical model based on the design method of the composite dental arch digital model in any one of claims 16-18; obtaining a shell dental appliance based on the dental arch physical model through a hot stamping film process and cutting, or designing a shell dental appliance digital model based on the dental arch digital model, and obtaining a shell dental appliance through 3D printing, wherein the shell dental appliance comprises a maxillary shell dental appliance and a mandibular shell dental appliance; sleeving the shell dental appliance on the dental arch physical model, and assembling the positioning component physical model on the dental arch physical model to obtain a shell dental appliance with the target occlusal relationship information; adding an accessory capable of positioning the target occlusal relationship on the maxillary shell dental appliance and / or the mandibular shell dental appliance to obtain the dental appliance.

20. The dental appliance manufacturing method of claim 19, wherein the accessory is a front tooth locking structure arranged in the anterior tooth area of the maxillary shell dental appliance or the mandibular shell dental appliance; or the accessory is a pair of jaw pad structures arranged on corresponding positions of the occlusal surfaces of the maxillary shell dental appliance and the mandibular shell dental appliance and cooperated with each other, or a pair of locking structures or connecting rod structures arranged on corresponding positions of the buccal surfaces or lingual surfaces of the maxillary shell dental appliance and the mandibular shell dental appliance and cooperated with each other; or the accessory is an adhesive structure arranged on corresponding positions of the occlusal surfaces of the posterior tooth areas of the maxillary shell dental appliance and the mandibular shell dental appliance, and the adhesive structure is formed by curing adhesive and is capable of fixing the relative positional relationship between the maxillary shell dental appliance and the mandibular shell dental appliance at the target occlusal relationship.

21. A method of designing a composite dental digital model, characterized in that, The method comprises: obtaining a dental arch digital model and target occlusal relationship information of a patient, wherein the dental arch model comprises a tooth part model and a support part model supporting the tooth part model, the dental arch digital model comprises a maxillary dental arch digital model and a mandibular dental arch digital model, and the support part model comprises a maxillary support part model and a mandibular support part model; selecting a positioning component model with a predetermined shape and size based on the target occlusal relationship information, wherein the positioning component model comprises a maxillary positioning component model and a mandibular positioning component model; obtaining addition position information of the positioning component model on the support part model, wherein the addition position information comprises addition position information of the maxillary positioning component model on the maxillary support part model, and addition position information of the mandibular positioning component model on the mandibular support part model; adding the upper jaw positioning member model on the upper jaw support part model and adding the lower jaw positioning member model on the lower jaw support part model to generate the integrated composite dental arch digital model, wherein the upper jaw positioning member model and the lower jaw positioning member model are directly assembled or indirectly assembled to position the upper and lower jaws of the dental arch digital model to the corresponding positions of the target jaw position of the patient.

22. The method of designing a composite dental digital model according to claim 21, wherein, The target occlusion relationship information includes: scanning the oral cavity and teeth of the patient in the target occlusion relationship by using a three-dimensional scanning device to directly obtain the target occlusion relationship information.

23. The method of designing a composite dental digital model according to claim 21, wherein, The target occlusion relationship information includes: obtaining first occlusion relationship information when the patient is in a maximum occlusion position; obtaining second occlusion relationship information when the lower jaw of the patient is in a maximum protrusion position; calculating the maximum protrusion amount of the lower jaw of the patient based on the first occlusion relationship information and the second occlusion relationship information; calculating a target protrusion amount based on the maximum protrusion amount, wherein the target protrusion amount is 60%-75% of the maximum protrusion amount of the lower jaw; obtaining target occlusion relationship information when the patient is in the target protrusion position based on the target protrusion amount.

24. The method of designing a composite dental digital model according to claim 21, wherein, The adding of the upper jaw positioning member model on the upper jaw support part model and the adding of the lower jaw positioning member model on the lower jaw support part model to generate the integrated composite dental arch digital model includes: After adding the upper jaw positioning member model on the upper jaw support part model and adding the lower jaw positioning member model on the lower jaw support part model, performing collision detection on the tooth part model and the positioning assembly model; When the positioning assembly model and the tooth part model collide, adjusting the adding position information of the positioning assembly model until no collision occurs to generate the integrated composite dental arch digital model.

25. A method of making a dental appliance, characterized by, It includes: based on the design method of the composite dental arch digital model in any one of claims 21-24, obtaining an integrated composite dental arch physical model; obtaining a shell-shaped dental instrument, the tooth arrangement contained in the cavity of the shell-shaped dental instrument is consistent with the tooth arrangement corresponding to the integrated composite dental arch physical model, and the shell-shaped dental instrument includes an upper jaw shell-shaped dental instrument and a lower jaw shell-shaped dental instrument; sleeving the shell-shaped dental instrument on the integrated composite dental arch physical model, adding an accessory capable of positioning the target occlusion on the upper jaw shell-shaped dental instrument and / or the lower jaw shell-shaped dental instrument to obtain the dental instrument.

26. The dental instrument manufacturing method of claim 25, wherein: the accessory is a front tooth locking structure arranged in the anterior tooth area of the upper jaw shell-shaped dental instrument or the lower jaw shell-shaped dental instrument; or the accessory is a pair of jaw pad structures arranged on the corresponding positions of the occlusal surfaces of the upper jaw shell-shaped dental instrument and the lower jaw dental instrument and cooperated with each other, or a pair of locking structures or connecting rod structures arranged on the corresponding positions of the buccal surfaces or lingual surfaces of the upper jaw shell-shaped dental instrument and the lower jaw dental instrument and cooperated with each other; or The accessory is an adhesive structure formed by adhesive setting on corresponding positions of the occlusal surfaces of the posterior tooth regions of the upper and lower shell-shaped dental appliances, and the adhesive structure can fix the relative positional relationship of the upper and lower shell-shaped dental appliances at the target occlusal relationship.

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