Dental jaw model and production system

Abstract

The utility model relates to the technical field of shell-shaped dental appliance manufacturing, and discloses a dental model and a production system, and the dental model comprises a dental crown model and a support base which are arranged in a split manner, the dental crown model comprises an integrally arranged dentition model, a connecting part for improving the cheek-lingual deformation resistance of the dental crown of the dentition model, and a supporting structure arranged on one side, far away from the dentition model, of the connecting part; wherein the connecting part is formed by protruding downwards from the bottom of the dentition model; the supporting base comprises a connecting part which is connected with the supporting structure in a matching manner, and the dental crown model is connected to the supporting base in a pluggable manner through the matching of the supporting structure and the connecting part. The disclosed production system is used for producing the shell-shaped appliance and comprises a feeding assembly, a film pressing assembly, a cutting assembly, a material disassembling assembly and a transferring assembly. According to the dental model and the production system, the 3D printing cost of the dental model can be reduced, and the possibility of pressed film deformation is reduced, so that the production accuracy of the appliance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shell-shaped dental appliance manufacturing, in particular to a tooth jaw model and a production system. Background Art

[0002] Shell-shaped dental braces are a type of orthodontic device made of safe, elastic, transparent polymer materials. They are invisible during the correction process, have good aesthetics, are easy to operate, and are convenient for oral cleaning. They have gradually become the first choice for orthodontic patients. In the production process of shell-shaped dental braces, it is necessary to first make a dental model of the patient, and then use a lamination process to press the membrane tightly against the dental model through air pressure to obtain the corresponding shell-shaped dental braces.

[0003] The current manufacturing process of shell-shaped dental orthodontic appliances mainly uses 3D printing technology to produce the dental models used in the lamination process. However, see Figure 1 The existing dental model includes a tooth part 10, a gum part 20 and a base part 30, which requires a lot of printing materials, resulting in high printing costs. In addition, each patient's orthodontic process requires the use of multiple or even dozens of shell-shaped dental braces, resulting in a large number of dental models that need to be produced in the existing manufacturing process. Therefore, the manufacturing cost of the dental model accounts for a considerable part of the manufacturing cost of the braces.

[0004] Since the shape of the appliance is mainly determined by the crown portion, see Figure 2 There is an improved method that makes the crown part 10 and the base part 30 of the dental model into separate parts, omitting the gum part, and using the base part as a universal component to connect crowns of different shapes, so that the base part can be reused. In the production of different orthodontic appliances, only different crown parts need to be printed, which not only saves the material usage of the gum part, but also reduces the material usage of the base part. However, in this method, the base part generally adopts a universal contour, while the bottom shapes of different crown parts are different. After assembly, the base part generally cannot fully support the crown part, and the dental model as a whole is subjected to a large pressure in the lamination process, so the crown is easily deformed in the lamination process, thereby causing the pressed appliance to deform. The shell-shaped orthodontic appliance is inconsistent with the design shape, which will eventually lead to the inability to accurately apply force according to the design plan when the orthodontic appliance is worn, affecting the correction effect. Utility Model Content

[0005] The purpose of the utility model is to provide a dental model and a production system used as a mold for hot pressing film forming shell-shaped dental orthodontic appliances, which can reduce the 3D printing cost of the dental model while improving the overall anti-deformation ability and reducing the possibility of pressing film deformation, thereby improving the accuracy of orthodontic appliance production.

[0006] In order to solve the above technical problems, an embodiment of the utility model provides a dental model used as a mold for a hot-pressed film forming shell-shaped dental appliance, the dental model comprising: a crown model and a support base which are separately arranged, wherein the crown model comprises: an integrally arranged dentition model, a connecting portion for increasing the buccal and lingual deformation resistance of the crown of the dentition model, and a support structure arranged on the side of the connecting portion away from the dentition model; wherein the connecting portion is formed by a downward protrusion from the bottom of the dentition model; the support base comprises a connecting portion which is connected to the support structure in a pluggable manner, and the crown model is connected to the support base in a pluggable manner through the cooperation of the support structure and the connecting portion.

[0007] Compared with the prior art, the embodiment of the utility model sets the dental model into a separate crown model and a support base, and connects the crown model to the support base in a pluggable manner through the cooperation of the support structure and the connecting part, which not only saves the gum part between the crown model and the support base, but also allows the same support base to be reused and installed with different crown models, thereby reducing printing materials and printing costs. In addition, a connecting part is formed by protruding from the bottom of the dentition model to increase the deformation resistance of the dentition model, reduce the risk of deformation, and improve the accuracy of the manufactured orthodontic appliance.

[0008] Optionally, the connecting portion covers at least 80% of the bottom area of ​​the dental model. By limiting the coverage of at least 80% of the bottom area, the area range for adding the connecting portion is limited, and the deformation resistance of each area at the bottom of the dental model is increased.

[0009] Optionally, the width difference between the horizontal edge of the connecting portion and the bottom edge of the corresponding position of the dental model is within 20% of the bottom width of the corresponding position. The horizontal dimension of the connecting portion is limited to be close to the horizontal dimension of the bottom of the dental model, thereby increasing the deformation resistance of the connecting portion to the edge of the dental model, thereby improving the overall deformation resistance of the dental model.

[0010] Optionally, the protruding height of the connecting portion is at least 20% of the height of the corresponding position of the dentition model. The connecting portion is limited to a certain height, which further improves the deformation resistance of the crown part.

[0011] Optionally, the outer contour of the side wall of the connecting portion is smoothly transitioned to the outer contour of the side wall of the dental model. The dental model is made smoother by the smoothly transitioned contour, and sharp parts are reduced.

[0012] Optionally, the connecting portion is a hollow structure, and its wall thickness is at least 1.5 mm. The wall thickness is limited to a certain extent to achieve the load-bearing capacity when the connecting portion is made hollow.

[0013] Optionally, the connecting portion is a strip-shaped structure. By limiting the connecting portion to a strip-shaped structure, the deformation resistance of the crown portion in the length direction of the strip-shaped structure can be effectively enhanced.

[0014] Optionally, the strip structure is arranged to extend in the mesiodistal direction, or in the buccal-lingual direction. Different directions in which the strip structure can be arranged are clarified.

[0015] Optionally, a plurality of the strip structures are arranged at the bottom of a single tooth, and the length directions of at least two strip structures are different. The plurality of strip structures further enhances the anti-deformation capability of the crown part.

[0016] Optionally, the width of a single strip structure is at least 1.0 mm. The width of the strip structure is limited to ensure the effectiveness of improving its ability to resist deformation.

[0017] Optionally, the connecting portion is designed symmetrically about the center line of the jaw, so as to increase the deformation resistance of the crown models on both sides at the same time.

[0018] Optionally, the connecting portion covers at least two teeth or at least one third of the length of the dental arch in the mesiodistal direction.

[0019] Optionally, the bottom surface of the connecting portion matches the contour of the upper surface of the supporting base, and when the crown model is assembled with the supporting base, the bottom surface of the connecting portion abuts against the upper surface of the supporting base. The bottom surface of the connecting portion abuts against the upper surface of the supporting base to further enhance the support for the bottom of the crown part, thereby ensuring the overall pressure bearing capacity of the dental model.

[0020] Optionally, the bottom surface of the connecting portion is a plane. By limiting the bottom surface of the connecting portion to be a plane, the upper surface of the supporting base is also a plane, which simplifies the design of the outer contour of the supporting base.

[0021] Optionally, the bottom of the dentition model includes a plurality of raised peaks, and the bottom surface of the connecting portion is a plane passing through the lowest raised peak. By setting the plane through the lowest raised peak, the volume of the connecting portion can be reduced as much as possible, and the amount of material used in the connecting portion can be reduced as much as possible.

[0022] Optionally, the width of the connecting portion gradually narrows from one end close to the teeth to the other end, wherein the maximum width is less than or equal to the width of the teeth at the corresponding position. The connecting portions with different widths are limited to allow flexibility in the structural setting of the connecting portion. On the other hand, the volume of the connecting portion is minimized by the gradually narrowing connecting portion.

[0023] Optionally, the outer surface of the side wall of the supporting portion and the connecting portion transitions continuously or in steps.

[0024] Optionally, the width of the support structure varies from one end close to the tooth model to the other end, wherein the maximum width is less than or equal to the width of the connecting portion at the corresponding position. Support structures with different widths are limited to allow for flexibility in the structural arrangement of the support structure.

[0025] Optionally, the width of the support structure gradually decreases from one end close to the tooth model to the other end. By gradually narrowing the support structure, the volume of the support structure is minimized.

[0026] Optionally, the cross-sectional shape of the support structure in the horizontal direction is circular, semicircular, square, triangular or square arc. The different shapes of the support structure in the horizontal cross-section are limited, and the setting form of the support structure is expanded so that different shapes can be adopted according to different needs.

[0027] The embodiment of the utility model also provides a production system for producing a shell-shaped orthodontic appliance, which includes a loading component, a film pressing component, a cutting component, a material removal component and a transfer component, wherein the loading component is arranged on a loading station, and is used to assemble the crown model in the above-mentioned dental model on a carrier plate fixed with the support base; the transfer component is used to transfer the carrier plate after assembling the dental model to the film pressing station, the cutting station and the material removal station respectively according to a predetermined process sequence; the film pressing component is arranged on the film pressing station, and is used to hot-press the film sheet to the desired position when the transfer component transports the carrier plate to the film pressing station. The dental model is formed on the semi-finished appliance; the cutting component is arranged on the cutting station, and is used to cut the semi-finished appliance on the carrying plate according to a predetermined cutting path when the transfer component transports the carrying plate to the cutting station; the dismantling component is arranged on the dismantling station, and is used to dismantle the appliance part of the semi-finished appliance after cutting to obtain a shell-shaped appliance when the transfer component transports the carrying plate to the dismantling station; and the transfer component transports the support base of the semi-finished appliance to the loading station so that the loading component can fix the crown model on the support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0029] Figure 1 It is a front view of the dental model provided in the background technology of the utility model;

[0030] Figure 2 It is a schematic diagram of another dental model provided in the background technology of the utility model;

[0031] Figure 3 It is a front view of a dental model provided in one embodiment of the utility model;

[0032] Figure 4 It is a split schematic diagram of a dental model provided in one embodiment of the utility model;

[0033] Figure 5 yes Figure 3 A schematic cross-sectional view of the assembly structure in the dental model shown;

[0034] Figure 6 It is a cross-sectional schematic diagram of the assembly structure of the dental model in another embodiment of the utility model;

[0035] Figure 7 It is a cross-sectional schematic diagram of the assembly structure of the dental model in another embodiment of the utility model;

[0036] Figure 8 It is a cross section of the posterior teeth assembly structure of the dental model in another embodiment of the utility model;

[0037] Fig. 9 It is a cross-sectional schematic diagram of the assembly structure of the dental model in another embodiment of the utility model;

[0038] Fig.10 It is a cross-sectional schematic diagram of the assembly structure of the dental model in another embodiment of the utility model;

[0039] Fig.11 It is a bottom view of a crown model in a dental jaw model provided in another embodiment of the utility model;

[0040] Fig.12 It is a bottom view of a crown model in another dental jaw model provided in another embodiment of the utility model;

[0041] Fig.13 It is a cross-sectional schematic diagram of the assembly structure of the dental model in another embodiment of the utility model;

[0042] Fig.14 It is a schematic cross-sectional view of the assembly structure of another dental model in another embodiment of the utility model;

[0043] Fig.15 It is a schematic cross-sectional view of the assembly structure of another dental model in another embodiment of the utility model;

[0044] Fig.16 It is a schematic diagram of a split dental model provided in another embodiment of the utility model;

[0045] Fig.17It is a structural block diagram of a production system provided by another embodiment of the utility model. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0047] In the embodiments of the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0048] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0049] In addition, the terms "installed", "set", "provided with", "opened", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0050] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0051] The "anterior tooth area" and "posterior tooth area" mentioned in various embodiments of the present application are defined according to the classification of teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38, including premolars and molars, which are teeth 4-8 in the FDI notation, and teeth 1-3 in the anterior tooth area in the FDI notation. The teeth in the anterior tooth area include central incisors, lateral incisors and canines.

[0052] As a dental medical device for correcting tooth deformities, shell-shaped dental braces do not affect the appearance of human teeth during the correction process, compared with wire-type dental braces. In the manufacturing process of shell-shaped dental braces, the dental model is mainly made by 3D printing technology, and then the shell-shaped dental braces are pressed out according to the dental model by hot pressing film process. However, the existing dental model includes a tooth part, a gum part and a base part, and the required printing materials are large, resulting in high printing costs. In addition, each patient's orthodontic process requires the use of multiple or even dozens of shell-shaped dental braces, resulting in a large number of dental models that need to be produced in the existing manufacturing process. Therefore, the manufacturing cost of the dental model accounts for a considerable part of the manufacturing cost of the appliance. An existing improvement method is to remove the gum part and use a universal base to save materials, but due to the reduction of bottom support, there is a problem of deformation in the die.

[0053] In view of the above technical problems, the utility model provides a dental model used as a mold for hot-pressing film forming a shell-shaped dental appliance, the dental model comprising: a crown model and a support base that are separately arranged, wherein the crown model comprises: an integrally arranged dentition model, a connecting portion for increasing the buccal and lingual deformation resistance of the crown of the dentition model, and a support structure arranged on the side of the connecting portion away from the dentition model; wherein the connecting portion is formed by the bottom of the dentition model protruding downward; the support base comprises a connecting portion that cooperates with the support structure, and the crown model is connected to the support base in a pluggable manner through the cooperation of the support structure and the connecting portion. Compared with the prior art, the implementation method of the utility model, on the basis of setting the dental model into a crown model and a support base that are separated from each other, further protrudes from the bottom of the dentition model to form a connecting portion, which is used to increase the deformation resistance of the dentition model, reduce the risk of deformation, and improve the accuracy of the manufactured appliance.

[0054] The following is a specific description of the implementation details of the dental model of the utility model used as a mold for hot pressing film forming a shell-shaped dental appliance. The following content is only provided for the convenience of understanding the implementation details and is not necessary for the implementation of this solution.

[0055] like Figure 3 , Figure 4 as well as Figure 5As shown, a dental model 100 provided in one embodiment of the present invention includes a dental crown model 11 and a support base 12 which are separately arranged.

[0056] Specifically, the crown model 11 includes: an integrally arranged dentition model 110, a connecting portion 112 for increasing the buccal and lingual deformation resistance of the crown of the dentition model, and a support structure 114 arranged on the side of the connecting portion away from the dentition model; wherein the connecting portion 112 is formed by the bottom of the dentition model 110 protruding downward; the support base 12 includes a connecting portion 124 that cooperates with the support structure 114, and the crown model 11 is connected to the support base 12 in a pluggable manner through the cooperation of the support structure 114 and the connecting portion 124. In this embodiment, the connecting portion 112 protrudes as a whole roughly according to the shape of the bottom of the dentition, and the protruding height is H2. The support structure 114 is continuously arranged at the bottom of the connecting portion 112. The support structure 114 in this embodiment is a columnar structure. During assembly, the bottom of the support structure 114 is inserted into the connecting portion 124 of the support base 12 to form a whole. The dental arch model 110 is used as a mold for a hot pressing film, and the film is formed into a shell-shaped appliance that can be mounted on the patient's teeth to apply orthodontic correction force. When manufacturing the dental model 100, the patient's teeth or dental plaster model can be scanned first to obtain model data containing the patient's gums and teeth, and then the scanned model data can be trimmed, the gums are separated, the tooth positions are named, the tooth axes are adjusted, and other operations are performed using software to obtain the patient's tooth model data; then, the patient's tooth model data is processed by a computer according to the correction plan, and the gum part of the processed patient model data is removed to obtain the dental arch model 110 data, and then the connecting part 112 and the supporting structure 114 are added to the dental arch model 110 data; then the 3D printer prints out each step without the gum structure but with the connecting part 112 and the supporting structure 114, that is, the crown model 11. It can be understood that the above steps for making a digital crown model are only an exemplary enumeration, and other methods can also be used to make a digital crown model, which will not be listed one by one here.

[0057] See also Figure 4In this embodiment, the support structure 114 is a protruding structure, and the support base 12 includes a connecting portion 124 that is connected to the support structure. In this embodiment, the connecting portion 124 can be a concave structure, and the crown model 11 can be connected to the support base 12 in a pluggable manner through the cooperation of the protruding structure and the concave structure. After the crown model 11 and the support base 12 are respectively manufactured, they can be cleaned and cured, and then the crown model 11 can be assembled in the support base 12. The support base 12 is used to fix and support the crown model 11. After the crown model 11 is assembled on the support base 12, the support base 12 can be fixed on the carrier plate and transported with the carrier plate to the laminating station and cutting station, etc., to facilitate automated hot laminating and cutting. Specifically, the support structure 114 can be inserted into the connecting portion 124 to form a clearance fit, so that when the crown model 11 needs to be installed on the support base 12, the support structure 114 can be inserted into the connecting portion 124, so that the inner wall of the connecting portion 124 can be used to limit the movement of the support structure 114, thereby fixing the crown model 11 on the support base 12. It can be understood that the connecting portion 124 is configured as a groove structure capable of accommodating the support structure 114, but in other feasible embodiments, the connecting portion 124 can also be configured as a through hole that penetrates the support base 12.

[0058] For details, see Figure 5 The bottom of the dental model 110 protrudes downward to form a connecting portion 112 for increasing the buccolingual deformation resistance of the dental crown of the dental model. The connecting portion 112 covers at least 80% of the bottom area of ​​the dental model. In the present embodiment, the area is covered 100%. It is understandable that in actual applications, the connecting portion 112 can also be set to cover at least 80%, 90%, 95%, etc. of the bottom area of ​​the dental model. The specific coverage area can be set according to actual needs. The coverage of at least 80% of the bottom area is limited to limit the area range for adding the connecting portion 112, thereby increasing the deformation resistance of each area at the bottom of the dental model. It is understandable that in other embodiments, a smaller coverage area, such as 70%, etc., can be set. The limitation of the coverage area does not affect the inventive concept of the present application.

[0059] Optionally, the width difference between the horizontal edge of the connecting portion 112 and the bottom edge of the corresponding position of the dental model is within 20% of the bottom width of the corresponding position. In this embodiment, the width difference is 0. It can be understood that in actual applications, the width difference between the horizontal edge of the connecting portion 112 and the bottom edge of the corresponding position of the dental model can also be set to 5%, 10%, 15%, etc. The width of the bottom of the corresponding position, and the specific width difference can be set according to actual needs. The horizontal dimension of the connecting portion 112 is limited to be close to the horizontal dimension of the bottom of the dental model, increasing the deformation resistance of the connecting portion 112 to the edge of the dental model, thereby improving the overall deformation resistance of the dental model. It can be understood that the size of the connecting portion 112 can be slightly smaller than the bottom of the dental model. In other embodiments, the specific size can also be set to the above-mentioned width difference of 25%, etc., and the limitation of this size will not affect the inventive concept of the present application.

[0060] Optionally, the protruding height of the connecting portion 112 is at least 20% of the height of the corresponding position of the dental model. Figure 5 For example, the protruding height of the connecting portion 112 is H2, and the height of the dental model at the corresponding position is H1, that is, H2≥H1*20%, which limits the connecting portion 112 to a certain height, further improving the deformation resistance of the crown part.

[0061] Continuing to explain, the outer contour of the side wall of the connecting portion 112 is smoothly transitioned with the outer contour of the side wall of the dental model. Figure 5 For example, the outer contour of the side wall of the connecting portion 112 and the outer contour of the side wall of the dental model are smoothly transitioned at the junction 102. The dental model is made smooth in appearance by the smoothly transitioned contour, and sharp parts are reduced.

[0062] Optional, see Figure 6 , the bottom surface 1120 of the connecting portion 112 matches the contour of the upper surface 1220 of the support base 12. When the crown model and the support base 12 are assembled, the bottom surface 1120 of the connecting portion 112 abuts against the upper surface 1220 of the support base 12. By abutting the bottom surface of the connecting portion 112 against the upper surface of the support base 12, the support for the bottom of the crown part is further enhanced, thereby ensuring the overall pressure-bearing capacity of the dental model. In some embodiments, the bottom surface of the connecting portion 112 is a plane, and correspondingly, the contour of the upper surface of the support base 12 is also a plane. After the crown model and the support base 12 are assembled, the upper and lower planes abut against each other, presenting surface contact. It can be understood that, see Figure 7 In other embodiments, the bottom surface of the connecting portion 112 may not be a plane, such as a curved surface. Correspondingly, the upper surface of the support base 12 is a curved surface that matches the bottom surface of the connecting portion 112, so as to further expand the contact surface area, improve the support capacity and increase stability. Figure 8In some embodiments, the bottom of the dental arch model 110 is not a plane, but may be a wavy surface following the gum line, and the wavy surface includes a plurality of convex peaks (1101a, 1101b and 1101c), and the bottom surface of the connecting portion 112 is a plane passing through the peak point of the lowest convex peak 1101b. By setting a plane at the peak point of the lowest convex peak, the volume of the connecting portion 112 can be minimized while ensuring surface contact with the upper surface of the support base 12, and the amount of material used in the connecting portion 112 can be minimized.

[0063] Optional, see Fig. 9 The connecting portion 112 may be a hollow structure, and its wall thickness t1 is at least 0.2 mm. In practical applications, it can also be set to 0.25 mm, 0.3 mm, etc., which are not listed here. By limiting a certain wall thickness, the load-bearing capacity of the connecting portion 112 when it is made hollow can be achieved, and the material usage of the crown model can be further reduced. Fig.10 The supporting structure can also be a hollow structure with a wall thickness t2 of at least 1.5 mm, which can further reduce the amount of material used while ensuring the deformation resistance of the dental model.

[0064] It should be further explained that the width of the connecting portion 112 in this embodiment can be gradually narrowed from one end close to the teeth to the other end, wherein the maximum width is less than or equal to the width of the teeth at the corresponding position. The connecting portions 112 with different widths are limited to make the structural setting of the connecting portion 112 flexible. On the other hand, by gradually narrowing the connecting portion 112, the volume of the connecting portion 112 is as small as possible. It can be understood that the above Figure 7 , a form of the gradually narrowing structure of the connecting portion 112 is shown. In practical applications, other forms, such as linear narrowing, etc., may also be used, which will not be listed here one by one.

[0065] The crown model 11 and the support base 12 of the dental model provided in this embodiment are separated from each other, and the crown model is pluggably connected to the support base 12 through the cooperation of the support structure and the connecting part. This not only saves the gum part between the crown model and the support base 12, but also allows the same support base 12 to be reused and installed with different crown models, thereby reducing printing materials and reducing printing costs. This embodiment further extends a connecting portion 112 at the bottom of the dental arch model to increase the deformation resistance of the dental arch model, reduce the risk of deformation, and improve the accuracy of the manufactured orthodontic appliance. In addition, the bottom surface of the connecting portion 112 is set to a matching surface contact with the upper surface of the support base 12 to increase the contact area, so that the crown model is fully supported during the film pressing process, improves its deformation resistance, and ensures the shape of the pressed orthodontic appliance is accurate.

[0066] Another embodiment of the present invention provides a dental model, which has a substantially similar structure to the dental model in the previous embodiment, with the main difference being the shape of the connecting portion 112, which is a strip-shaped structure in the present embodiment. By limiting the connecting portion 112 to a strip-shaped structure, the deformation resistance of the crown portion in the length direction of the strip-shaped structure can be effectively enhanced.

[0067] Understandably, see Fig.11 The connecting portion 112 of the strip-shaped structure is extended in the proximal and distal directions, or see Fig.12 The connecting portion 112 of the strip structure may include a strip 112a extending in the mesiodistal direction and a plurality of strips 112b extending in the buccal-lingual direction. It is understandable that in practical applications, only the connecting portion of the strip structure extending in the buccal-lingual direction may be provided, which will not be listed here. The different directions in which the strip structure can be provided are clarified.

[0068] Specifically, a plurality of the strip structures are arranged at the bottom of a single tooth, and the length directions of at least two of the strip structures are different. The plurality of strip structures with different length directions can enhance the deformation resistance of the crown part in different directions, and further enhance the deformation resistance of the whole dental model. It is understandable that in actual applications, a plurality of strip structures with the same direction can be arranged at the bottom of a single tooth, such as a plurality of parallel strip structures. Furthermore, the total area covered by the plurality of strip structures can be arranged to cover at least 80% of the bottom area of ​​the dental model, so as to provide sufficient support force.

[0069] Furthermore, the width of a single strip structure is at least 1.0 mm, and specific widths are 1.5 mm, 3.0 mm, etc., which are not listed here one by one. The width of the strip structure is limited to ensure the effectiveness of improving its ability to resist deformation.

[0070] It should also be noted that the connecting portion 112 in this embodiment is designed symmetrically about the dental midline L. This achieves the goal of increasing the deformation resistance of the crown models on both sides at the same time. In some embodiments, the connecting portion 112 can cover at least two teeth or at least one-third of the length of the dental arch in the mesiodistal direction. In this embodiment, the teeth in all tooth positions are specifically covered, further enhancing the overall deformation resistance of the dental model.

[0071] It can be seen that the present embodiment mainly provides a connecting portion 112 of a strip-shaped structure, which is flexible in arrangement and provides good supporting force, thereby providing flexible and varied arrangement areas and arrangement methods for dental models of various shapes.

[0072] The utility model provides another embodiment of a dental model. The structure of the dental model in this embodiment is roughly the same as that in the previous embodiment. The main difference is that in the above embodiment, the width of the support structure from one end close to the dental model to the other end is the same, generally forming a uniform column, while in this embodiment, the width of the support structure from one end close to the dental model to the other end is different, thereby further reducing the volume of the support structure.

[0073] See also Fig.13 The width of the support structure gradually decreases from one end w1 close to the tooth model to the other end w2. Specifically, the maximum width is less than or equal to the width w3 of the connecting portion 112 at the corresponding position. The support structures with different widths are limited to make the structural setting of the support structure flexible. Further, the volume of the support structure is minimized by the gradually narrowing support structure. It can be understood that the width of the above support structure changes linearly. In practical applications, other changes can also be adopted, such as Fig.14 Other forms are not listed here.

[0074] It should also be noted that the cross-sectional shape of the support structure in the horizontal direction is circular, semicircular, square, triangular or square arc. The specific shapes are not listed one by one, and they do not limit the core concept of the present application. The different shapes of the support structure in the horizontal cross-section are limited, and the setting form of the support structure is expanded so that different shapes can be adopted according to different needs. It is understandable that when the cross-section is semicircular, square, triangular or square arc, it is not easy to cause translation, rotation, etc. when the support structure is connected to the connecting part.

[0075] In addition, in the above embodiment, the support structure and the outer surface of the side wall of the connecting portion 112 are stepped, and a sudden change is formed at the connection point 1222 between the outer surface of the support structure and the outer surface of the connecting portion 112. In other embodiments, the outer surface of the side wall of the support portion and the connecting portion 112 can be continuously transitioned, see Fig.15 The outer surface of the supporting structure and the outer surface of the connecting portion 112 are continuous at the connection 1224 .

[0076] It can be seen that a variety of different support structures are provided in this embodiment, so that the support structure can be set with different structures according to actual needs in practical applications, and can be flexibly adapted to various application scenarios.

[0077] In addition, it should be noted that the support structure 114 in the above embodiments is a columnar structure, but a wall-like structure can also be used in practical applications, such as Fig.16As shown, the bottom of the dental model 110 protrudes out of the connecting portion 112, and the bottom of the connecting portion 112 continues to protrude out of the wall-like support structure 114. Correspondingly, the support base 12 includes a concave structure corresponding to the support structure 114, that is, a connecting portion 124. Specifically, the concave structure can be a groove structure or can pass through the support base 12. It can be understood that the support structure 114 and the corresponding connecting portion 124 can also adopt other structures, which are not listed here one by one.

[0078] It should be further explained that, in some of the above embodiments, the supporting structure is arranged at the bottom of the connecting portion 112, that is, at the same position, vertically from top to bottom are the teeth, the connecting portion 112, and the supporting structure, while in actual applications, the connecting portion 112 and the supporting structure may not cover all dentitions, and the specific coverage area can be set as needed, and different coverage ranges can be set for different scenarios, which is not limited here.

[0079] It is understandable that, in the case of the reuse of the support base 12, the crown model used to make the orthodontic appliance in different correction steps needs to be plugged into the support base 12 in sequence for the lamination process. Therefore, preferably, the hardness of the support base 12 and / or the stiffness in the lamination direction are greater than the crown model, which can improve the durability of the support base 12 and ensure the reliability of the support base 12 in the lamination process. For example, the material of the support base 12 can be metal or ceramic, which can also make the support base 12 more wear-resistant. In addition, the materials of the support base 12 and the crown model can also be different. Since the support base 12 and the crown model are set separately, the 3D printing manufacturing of the crown model is not affected, and in the case of the reuse of the support base 12, the durability requirements of the support base 12 and the crown model are different. The two can be made of materials with different durability and cost due to different service life, thereby maximizing the reduction of manufacturing costs while meeting the requirements of the manufacturing process.

[0080] Another embodiment of the present invention further provides a production system 300 for producing a shell-shaped appliance, which includes a loading component 31, a transport component 32, a film pressing component 33, a cutting component 34 and a dismantling component 35.

[0081] See also Fig.17 The loading component 31 is arranged on the loading station, and is used to assemble the crown model in the dental model provided in the above embodiment on the carrier plate fixed with the support base. Specifically, the loading component 31 can be a manipulator, which grabs the crown model by automatic suction or automatic clamping, so as to automatically assemble the crown model on the support base for the subsequent lamination process.

[0082] The transfer assembly 32 is used to transfer the carrier plate after the dental model is assembled to the laminating station, the cutting station and the material removal station according to a predetermined process sequence. In this embodiment, the transfer operation can be realized by an automatic transmission belt or a manipulator, which is arranged between the loading station, the laminating station, the cutting station and the material removal station to transfer the support base assembled with the crown model between the various stations.

[0083] The laminating assembly 33 is disposed on the laminating station, and is used to hot-press the film onto the dental model to form a semi-finished appliance when the transport assembly 32 transports the carrier plate to the laminating station.

[0084] The cutting assembly 34 is disposed on the cutting station and is used to cut the semi-finished appliance on the carrier plate according to a predetermined cutting path when the transfer assembly 32 transports the carrier plate to the cutting station. Specifically, during the cutting process, a CNC automatic cutting / laser cutting machine can be used to cut the edge of the appliance along the cutting line.

[0085] The disassembly assembly 35 is arranged at the disassembly station, and is used to disassemble the appliance part of the cut appliance semi-finished product to obtain a shell-shaped appliance when the transfer assembly transports the carrier plate to the disassembly station. Optionally, the disassembly assembly 35 can also be replaced by manual labor, and the cut appliance semi-finished product is manually separated / disassembled after cutting, and then the appliance is polished, cleaned, and packaged to complete the appliance processing.

[0086] In this embodiment, the transfer component 32 transfers the support base from which the semi-finished appliance is removed to the loading station so that the loading component 31 can reuse the support base and fix the crown model on the support base. For example, in a feasible embodiment, the transfer component 32 can be an automatic conveyor belt, which sequentially connects the loading station, the laminating station, the cutting station and the dismantling station to form a ring. After the support base passes through the loading station, the laminating station and the cutting station in sequence and reaches the dismantling station and unloads the finished shell-shaped appliance, the automatic conveyor belt transfers the support base to the loading station again, so that the loading component 31 can assemble the next crown model on the support base and recycle the support base. It is not difficult to understand that the transfer component 32 can also be a robot. In this way, after the loading station, laminating station, cutting station and dismantling station form a ring, robots can be set between two adjacent stations to perform transfer operations respectively. The robot can also be set in the center of the ring so that the robot can transfer the support base equipped with the crown model between each station according to the process requirements.

[0087] Furthermore, the dental crown model of the present embodiment may be the dental crown model provided in the aforementioned embodiment, or may have the relevant technical features or a combination thereof of the dental crown models in the aforementioned various feasible embodiments and / or preferred embodiments; the supporting base of the present embodiment may be the supporting base provided in the aforementioned embodiment, or may have the corresponding technical features or a combination thereof of the supporting base in the aforementioned various feasible embodiments and / or preferred embodiments.

[0088] It is understandable that all the above feasible solutions can be combined arbitrarily without contradiction, and the specific combination method can be selected by those skilled in the art according to actual conditions under the guidance of the present utility model, and will not be described in detail here.

[0089] The labeling device for a packaging line provided by the embodiment of the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation of the utility model. The description of the above implementation is only used to help understand the idea of ​​the utility model. There will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A dental model used as a mold for hot pressing a shell-shaped dental appliance, characterized in that: The invention comprises a dental crown model and a supporting base which are separately arranged, wherein the dental crown model comprises: an integrally arranged dentition model, a connecting portion for increasing the buccal and lingual deformation resistance of the dental crown of the dentition model, and a supporting structure arranged on a side of the connecting portion away from the dentition model; wherein, The connecting portion is formed by the bottom of the dentition model protruding downward; The support base includes a connecting portion that is connected to the support structure in a pluggable manner through the cooperation between the support structure and the connecting portion.

2. The dental model according to claim 1, characterized in that: The connecting portion covers at least 80% of the bottom area of ​​the dental model.

3. The dental model according to claim 1 or 2, characterized in that: The width difference between the horizontal edge of the connecting portion and the bottom edge of the corresponding position of the dental model is within 20% of the bottom width of the corresponding position.

4. The dental model according to claim 3, characterized in that: The protruding height of the connecting portion is at least 20% of the height of the corresponding position of the dental model.

5. The dental model according to claim 3, characterized in that: The outer contour of the side wall of the connecting portion transitions smoothly with the outer contour of the side wall of the dentition model.

6. The dental model according to claim 3, characterized in that: The connecting portion is a hollow structure with a wall thickness of at least 1.5 mm.

7. The dental model according to claim 1 or 2, characterized in that: The connecting portion is a strip structure.

8. The dental model according to claim 7, characterized in that: The strip structure is extended in the mesiodistal direction or in the buccal-lingual direction.

9. The dental model according to claim 8, characterized in that: A plurality of the strip structures are arranged at the bottom of a single tooth, and the length directions of at least two of the strip structures are different.

10. The dental model according to claim 1, characterized in that: The connecting portion is designed symmetrically about the midline of the jaw.

11. The dental model according to claim 10, characterized in that: The connecting portion covers at least two teeth in the mesiodistal direction or at least one third of the length of the dental arch.

12. The dental model according to claim 1 or 10, characterized in that: The bottom surface of the connecting portion matches the contour of the upper surface of the supporting base. When the dental crown model is assembled with the supporting base, the bottom surface of the connecting portion abuts against the upper surface of the supporting base.

13. The dental model according to claim 12, characterized in that: The bottom surface of the connecting portion is a plane.

14. The dental model according to claim 13, characterized in that: The bottom of the dental arch model includes a plurality of raised peaks, and the bottom surface of the connecting portion is a plane passing through the peak point of the lowest raised peak.

15. The dental model according to claim 1, characterized in that: The width of the connecting portion gradually narrows from one end close to the teeth to the other end, wherein the maximum width is less than or equal to the width of the teeth at the corresponding position.

16. The dental model according to claim 1, characterized in that: The supporting portion and the outer surface of the side wall of the connecting portion have a continuous transition or a stepped transition.

17. The dental model according to claim 1, characterized in that: The width of the support structure from one end close to the tooth model to the other end is different, wherein the maximum width is less than or equal to the width of the connecting portion at the corresponding position.

18. The dental model according to claim 1 or 17, characterized in that: The width of the support structure gradually decreases from one end close to the tooth model to the other end.

19. A production system for producing a shell-shaped appliance, characterized in that: include: Feeding assembly, film pressing assembly, cutting assembly, dismantling assembly and transfer assembly, among which, The loading assembly is arranged on the loading station, and is used to assemble the crown model in the dental model according to any one of claims 1 to 18 on a carrier plate fixed with the support base; The transfer assembly is used to transfer the carrier plate after assembling the dental model to the laminating station, the cutting station and the disassembling station respectively according to a predetermined process sequence; The laminating assembly is arranged on the laminating station, and is used to hot-press the film onto the dental model to form a semi-finished appliance when the transport assembly transports the carrier plate to the laminating station; The cutting assembly is disposed on the cutting station and is used to cut the semi-finished appliance on the carrying plate according to a predetermined cutting path when the transport assembly transports the carrying plate to the cutting station; The dismantling assembly is arranged at the dismantling station, and is used to dismantle the appliance part of the cut appliance semi-finished product to obtain a shell-shaped appliance when the transfer assembly transports the carrier plate to the dismantling station; and The transfer component transfers the support base with the semi-finished appliance removed to the loading station so that the loading component can fix the crown model on the support base.

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