Shell-shaped dental instrument and dental model for manufacturing appliance through hot-pressing film forming

Abstract

The utility model relates to the technical field of orthodontics, and discloses a shell-shaped dental instrument which comprises a shell-shaped body with a plurality of tooth containing cavities and a protruding structure arranged on the occlusion side of the shell-shaped body, the protruding structure is hollow and communicated with the tooth containing cavities, and the protruding structure is matched with a jaw so as to adjust the jaw position relation between the upper jaw and the lower jaw during occlusion. Wherein the side, close to the shell-shaped body, of the protruding structure at least partially exceeds the range of the occlusal surface of the tooth where the protruding structure is located, the exceeding part extends towards the adjacent tooth containing cavity to form an auxiliary supporting part, and the upper boundary of the auxiliary supporting part is connected with the end, close to the adjacent tooth containing cavity, of the exceeding part; the lower boundary is connected with the cheek side wall and / or the tongue side wall of the adjacent tooth storage cavity, the lower boundary is located in the crown 1 / 2 of the corresponding tooth crown, and the horizontal distance between the auxiliary supporting part and the side wall of the adjacent tooth storage cavity is gradually reduced from the upper boundary to the lower boundary in the occlusion direction. The utility model further discloses a tooth jaw model for manufacturing the appliance through hot-pressing film forming.

Description

Technical Field

[0001] The utility model relates to the technical field of oral orthodontics, in particular to a shell-shaped dental appliance and a tooth-jaw model used for hot pressing film forming to manufacture an appliance. Background Art

[0002] The shell-shaped dental appliance is a dental orthodontic correction device made of safe elastic transparent polymer materials. It has the advantages of being completely invisible during the correction process, good aesthetics, simple operation, and easy oral cleaning. In addition, due to its transparent and beautiful features, the correction process can be completed almost without being noticed by others. It has gradually become the first choice for orthodontic patients. In the process of making the shell-shaped dental appliance, it is necessary to first make the patient's shell-shaped dental instrument, and then use the lamination process to press the membrane tightly against the shell-shaped dental instrument through air pressure to obtain the corresponding shell-shaped dental appliance shape.

[0003] With the development of shell-shaped dental appliance technology, its application scenarios are becoming more and more extensive. For example, a protruding structure that protrudes toward the opposing jaw is set in the posterior tooth area of ​​the shell-shaped dental appliance to open the bite, adjust the jaw position, etc. However, in the structural design of the existing protruding structure, in order to make the protruding structure have sufficient contact with the opposing jaw, the width of the protruding structure may be increased when designing the protruding structure. Then, the bottom of the protruding structure may exceed the occlusal surface of the teeth of the original jaw, causing the edge to be partially suspended; or in cases of eccentric jaws, in order to have accurate contact with the opposing jaw, the protruding structure may partially deviate from the midline of the teeth of the original jaw, causing one side of the bottom of the protruding structure to exceed the occlusal surface of the teeth. In this case, Figure 1 and Figure 2 The protruding portion of the bottom of the raised structure shown is suspended (as indicated by 211 and 212), lacking support, resulting in insufficient bearing pressure, and will be more easily crushed during the biting action. It is necessary to design a raised structure that can fully contact the opposing jaw and has the ability to resist deformation. Utility Model Content

[0004] The utility model aims to provide a shell-shaped dental instrument and a dental model for manufacturing an orthodontic appliance by hot pressing film forming, which can solve the problem of insufficient bottom support force of a raised structure in the shell-shaped dental instrument and further enhance the anti-deformation ability of the raised structure.

[0005] To solve the above technical problems, an embodiment of the utility model provides a shell-shaped dental instrument, comprising: a shell-shaped body having a plurality of tooth receiving cavities, and a protruding structure arranged on the occlusal side of the shell-shaped body, the protruding structure being hollow and communicating with the tooth receiving cavities, and the protruding structure cooperating with the opposing jaw to adjust the jaw position relationship of the upper and lower jaws during occlusion; wherein the protruding structure at least partially exceeds the range of the occlusal surface of the tooth located on one side close to the shell-shaped body, and the exceeding part extends an auxiliary supporting part toward the adjacent tooth receiving cavity, the upper boundary of the auxiliary supporting part is connected to one end of the exceeding part close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth receiving cavity, the lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal spacing between the auxiliary supporting part and the side wall of the adjacent tooth receiving cavity gradually decreases from the upper boundary to the lower boundary along the occlusal direction.

[0006] An embodiment of the utility model also provides a dental model for manufacturing an orthodontic appliance by hot pressing film forming, comprising: a tooth portion, a gingival portion extending from the bottom of the tooth portion to the tooth root, and a jaw pad portion arranged on the occlusal side of a preset tooth in the tooth portion, wherein the jaw pad portion at least partially exceeds the range of the occlusal surface of the tooth located close to the gingival side of the jaw, and an auxiliary support portion is arranged between the exceeding portion and the adjacent tooth portion, the upper boundary of the auxiliary support portion is connected to one end of the exceeding portion close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth, and the lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal distance between the surface of the auxiliary support portion away from the tooth portion and the adjacent tooth gradually decreases from the upper boundary to the lower boundary along the occlusal direction.

[0007] Compared with the prior art, the embodiment of the utility model is to set a raised structure in the posterior tooth area of ​​the shell-shaped dental instrument, and by changing the shape of the part of the bottom of the jaw pad that exceeds the occlusal surface of the teeth, the upper boundary is connected to the bottom surface of the exceeding part, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth receiving cavity, so as to form a bottom support for the raised structure by contacting the teeth. By limiting the horizontal spacing between the auxiliary support part and the side wall of the adjacent tooth receiving cavity from the upper boundary to the lower boundary along the occlusal direction to gradually decrease, the occlusal force is converted into an oblique force, which is obliquely transmitted to the side wall of the adjacent teeth, so that the exceeding part of the bottom of the raised structure is sufficiently supported, avoiding the insufficient bearing pressure caused by the bottom of the protrusion hanging in the air, improving the compression resistance of the raised structure, and reducing the problem of collapse during wearing. On the other hand, the occlusal pressure on the adjacent teeth is also partially converted into the oblique force on the side wall, reducing the possibility of the teeth covered by the raised structure of the shell-shaped dental instrument in the embodiment of the present application being unexpectedly depressed. It can be seen that the implementation method of the present application changes the bottom shape of the original jaw pad and forms an auxiliary support portion in the part that exceeds the occlusal surface of the teeth. This can solve the problem of insufficient bottom support force of the raised structure in the shell-shaped dental instrument, further enhance the anti-deformation ability of the raised structure, and reduce the possibility of the covered teeth being unexpectedly depressed.

[0008] Optionally, the auxiliary support portion includes a first sub-support portion located on the buccal or lingual side of the tooth, the first sub-support portion having a straight bar-shaped cross-section in the direction from buccal to lingual, or an arc-shaped cross-section that is concave toward the protruding structure; and / or, the auxiliary support portion includes a second sub-support portion located on the mesial or distal side of the tooth, the second sub-support portion having a straight bar-shaped cross-section in the direction from mesial to distal, or an arc-shaped cross-section that is concave toward the protruding structure. The use of a straight bar-shaped cross-section can realize an auxiliary support portion with a flat surface, making the surface of the shell-shaped dental instrument smoother and easier to clean, reducing the possibility of bacterial adhesion on the surface. The use of a concave arc-shaped cross-section can reduce the overall space occupied by the protruding structure, reducing the foreign body sensation in the mouth when the shell-shaped dental instrument is worn in the embodiment of the present application.

[0009] Optionally, the angle between the straight bar cross section and the long axis of the tooth where the auxiliary support portion is located is between 20° and 50°. The bottom surface shape is set with the tooth axis as a reference, and the angle of the bottom surface support to the tooth contour is limited to form a relatively stable reference amount, so as to avoid the difficulty in determining the connection between the bottom surface and the tooth when the tooth is in a tilted state during the correction process.

[0010] Optionally, the curvature range of the concave arc surface is 1500R-2500R. This curvature range ensures that the concave arc surface will not be too curved, resulting in insufficient bearing capacity, or too flat, resulting in insufficient volume reduction.

[0011] Optionally, the angle between the tangent line of the concave arc surface at the highest point and the long axis of the tooth where the auxiliary supporting part is located is between 20° and 50°.

[0012] Optionally, the connection between the auxiliary support part and the adjacent tooth receiving cavity is located within the crown 1 / 2 of the corresponding tooth crown. The connection is limited to within the crown 1 / 2, and the coverage of the auxiliary support part on the side of the tooth is limited to avoid insufficient coverage of the tooth due to excessive coverage, which affects the correction force on the tooth where the auxiliary support part is located.

[0013] Optionally, the position of the connection is vertically lower than the occlusal surface of the teeth. Since a connection that is too high will cause the auxiliary support part to be too tilted and insufficient in support force, the position of the connection is further limited to be lower than the occlusal surface of the teeth to ensure that the formed auxiliary support part has sufficient support force.

[0014] Optionally, the connection between the upper boundary of the auxiliary support portion and the protruding structure is not higher than 1 / 2 of the protruding structure vertically.

[0015] Optionally, the top surface of the raised structure facing the opposing jaw matches the occlusal surface of the teeth of the opposing jaw when the present jaw is in the target jaw position.

[0016] Optionally, the protruding structure covers at least one tooth of the present jaw in the mesiodistal and upward direction. The protruding structure is limited to cover at least one tooth, ensuring that the protruding structure has sufficient covering position so as to have sufficient contact with the opposing jaw.

[0017] Optionally, the buccal side and / or the lingual side of the protruding structure is provided with a partially inwardly concave or outwardly convex retaining portion, and the inner surface of the retaining portion matches the outer surface of the reinforcing block filled into the protruding structure to prevent the reinforcing block from falling out. Since the reinforcing block may fall out when it is filled into the protruding structure, the concave-convex structure on the surface is increased, and the supporting area of ​​the inner surface of the protruding structure against the reinforcing block is increased, thereby improving the retaining force on the reinforcing block.

[0018] Optionally, the retaining portion is strip-shaped and substantially parallel to the horizontal plane. Since the horizontal plane is substantially perpendicular to the direction in which the reinforcing block comes out, the resisting force at this time has a better effect of hindering the coming out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1It is a schematic diagram of the positional relationship between the protruding structure on the existing orthodontic appliance and the teeth in the background technology of the present application;

[0021] Figure 2 It is a schematic diagram of the positional relationship between the protruding structure on the existing orthodontic appliance and the teeth in the background technology of the present application from another angle;

[0022] Figure 3 It is a top view schematic diagram of a shell-shaped dental instrument provided by one embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the buccal and lingual cross-section of a shell-shaped dental appliance provided by one embodiment of the utility model at a tooth 105;

[0024] Figure 5 It is a schematic diagram of the crown 1 / 2 position of a tooth in a shell-shaped dental appliance provided by one embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the crown 1 / 3 position of a tooth in a shell-shaped dental appliance provided by one embodiment of the utility model;

[0026] Figure 7 It is a schematic diagram of the buccal and lingual cross-section of another shell-shaped dental appliance provided by one embodiment of the utility model at the tooth;

[0027] Figure 8 It is a schematic diagram of the buccal and lingual cross-section of another shell-shaped dental appliance provided by one embodiment of the utility model at the tooth;

[0028] Fig. 9 This is a schematic diagram of the positional relationship between the shell-shaped dental appliance provided by another embodiment of the utility model at the tooth and the surface of the opposing jaw;

[0029] Fig.10 It is a schematic diagram of the buccal and lingual cross-section of a shell-shaped dental appliance provided by another embodiment of the utility model at a tooth;

[0030] Fig.11 It is a schematic diagram of the buccal and lingual cross-section of a shell-shaped dental appliance provided by another embodiment of the utility model at a tooth;

[0031] Fig.12 It is a three-dimensional schematic diagram of a protruding structure in a shell-shaped dental instrument provided by another embodiment of the utility model;

[0032] Fig.13 It is a structural schematic diagram of a dental jaw model provided in another embodiment of the utility model. DETAILED DESCRIPTION

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The "horizontal plane", "coronal plane" and "sagittal plane" mentioned in each embodiment of the present application refer to terms in biomedical anatomy: the horizontal plane (English name: horizontal plane), also known as the "transverse plane" (English name: transverse plane), is perpendicular to the vertical axis and divides the human body into upper and lower parts; the coronal plane (English name: coronal plane) is a cross-section that cuts the human body longitudinally into front and back parts along the left and right directions; the sagittal plane (English name: sagittal plane) divides the human body into left and right parts, the left and right sections are the sagittal planes, and the left and right equal sections are called the midsagittal planes.

[0040] The utility model embodiment provides a shell-shaped dental instrument, comprising: a shell-shaped body with a plurality of tooth receiving cavities, and a protruding structure arranged on the occlusal side of the shell-shaped body, wherein the protruding structure is hollow and communicates with the tooth receiving cavities, and the protruding structure cooperates with the opposing jaw to adjust the jaw position relationship of the upper and lower jaws during occlusion; wherein the protruding structure at least partially exceeds the range of the occlusal surface of the tooth located on one side close to the shell-shaped body, and the exceeding part extends an auxiliary supporting part toward the adjacent tooth receiving cavity, the upper boundary of the auxiliary supporting part is connected to one end of the exceeding part close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth receiving cavity, the lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal spacing between the auxiliary supporting part and the side wall of the adjacent tooth receiving cavity gradually decreases from the upper boundary to the lower boundary along the occlusal direction. It can be seen that the implementation method of the present application changes the bottom shape of the original jaw pad and forms an auxiliary support portion in the part that exceeds the occlusal surface of the teeth. This can solve the problem of insufficient bottom support force of the raised structure in the shell-shaped dental instrument, further enhance the anti-deformation ability of the raised structure, and reduce the possibility of the covered teeth being unexpectedly depressed.

[0041] The implementation details of the shell-shaped dental instrument of the present invention are specifically described below. The following content is only provided for the convenience of understanding and is not necessary for implementing the present solution.

[0042] The shell-shaped dental instrument provided by one embodiment of the utility model is as follows Figure 3 and Figure 4 As shown, the shell-shaped dental instrument comprises: a shell-shaped body 10 having a plurality of tooth receiving cavities, and a protruding structure 20 arranged on the occlusal side of the shell-shaped body 10, wherein the protruding structure 20 is hollow and communicates with the tooth receiving cavity, and the protruding structure 20 cooperates with the opposing jaw to adjust the jaw position relationship of the upper and lower jaws during occlusion. In this embodiment, two protruding structures 20 are provided, symmetrically arranged on both sides of the posterior tooth area, and the tooth positions covered are teeth No. 4-6.

[0043] Specifically, for a single raised structure 20, the portion close to one side of the shell-like body 10 exceeds the range of the occlusal surface of the tooth, and the exceeding portion is located on the lingual side of the tooth. The exceeding portion extends an auxiliary support portion 22 toward the adjacent tooth receiving cavity, and the upper boundary of the auxiliary support portion 22 is connected to one end of the exceeding portion close to the adjacent tooth receiving cavity, which is the bottom contour line A in this embodiment, and the lower boundary is connected to the lingual wall of the adjacent tooth receiving cavity (at B). The lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal spacing between the auxiliary support portion 22 and the side wall of the adjacent tooth receiving cavity gradually decreases from the upper boundary to the lower boundary along the occlusal direction. Specifically, the above-mentioned crown 1 / 2 refers to the midpoint of the crown portion of the tooth, combined with Figure 5 Taking the middle tooth as an example, the tooth is divided into two halves with line g1 as the center line. The crown 1 / 2 refers to the part above line g1. Correspondingly, the lower boundary is located in the crown 1 / 2 of the tooth, that is, the position on the tooth contour that is higher than the intersection point Y of line g1 and the tooth contour. In another embodiment, the lower boundary can also be limited to be located in the crown 1 / 3 of the corresponding tooth crown. Figure 6 As shown, assuming that the line g2 and the line g3 divide the tooth into three equal parts, the inner 1 / 3 of the crown refers to the part above the line g2. It can be understood that other ranges can also be defined in other embodiments, which are not listed here one by one.

[0044] In some embodiments, the auxiliary support portion 22 includes a first sub-support portion located on the lingual side of the tooth, and the first sub-support portion has a straight strip-shaped cross section in the buccal and lingual directions (eg, Figure 4 The auxiliary support portion 2222 shown in the figure, in some embodiments, the buccolingual cross section can be a vertical plane passing through the buccolingual midline of the tooth. It is worth mentioning that the vertical plane can be a plane perpendicular to the occlusal surface of the tooth, or a plane parallel to the long axis of the tooth, or a vertical axis in the tooth axis of the dentition. It can be understood that other planes can also be used in actual applications, which are not listed here one by one. It can be understood that the use of a straight bar cross section can achieve an auxiliary support portion 22 with a flat surface, making the surface of the shell-shaped dental instrument smoother and easier to clean, and reducing the possibility of surface bacterial adhesion. In some embodiments, the angle α between the above-mentioned straight bar cross section and the tooth long axis c of the tooth where the auxiliary support portion 22 is located is between 20°-50°, such as 20°, 30°, 45° or 50°, etc., which are not listed here one by one. The bottom surface shape is set with the tooth axis as a reference, and the angle of the bottom surface support to the tooth contour is limited to form a relatively stable reference amount to avoid the difficulty in determining the connection between the bottom surface and the tooth when the tooth is in a tilted state during the correction process.

[0045] In some other embodiments, the cross section of the first sub-support portion in the buccal and lingual direction is in the shape of an arc strip that is concave toward the protruding structure 20 (eg Figure 7The auxiliary support portion 2222' shown). The use of a concave arc strip shape can reduce the overall space occupied by the raised structure 20 and reduce the foreign body sensation in the mouth when the shell-shaped dental instrument in the embodiment of the present application is worn. In some embodiments, the curvature range of the above-mentioned concave arc surface is 1500R-2500R. This curvature range prevents the concave arc surface from being too curved, resulting in insufficient bearing capacity, or being too flat and insufficiently reduced in volume. In some other embodiments, the angle between the tangent of the above-mentioned concave arc surface at the highest point and the long axis of the tooth where the auxiliary support portion 22 is located is between 20°-50°, such as 20°, 30°, 45° or 50°, etc., which are not listed one by one here.

[0046] It is further explained that, in addition to the above-mentioned first sub-support portion in the buccolingual direction, in some embodiments, the auxiliary support portion 22 may include a second sub-support portion located on the mesial side or distal side of the tooth, and the second sub-support portion has a straight bar-shaped cross-section in the mesiodistal upward direction, or an arc-shaped bar concave toward the protruding structure 20. It can be understood that the shape of the second sub-support portion in the mesiodistal upward cross-section is roughly the same as the shape of the first sub-support portion in the buccolingual upward cross-section, and its schematic diagram can be used for reference, so it will not be repeated. It is worth mentioning that the first sub-support portion and the second sub-support portion can be provided at the same time in the same embodiment, or only one sub-support portion can be provided, or only the second sub-support portion can be provided, which will not be listed one by one here.

[0047] Regarding the auxiliary support portion 22, the position of the connection between the auxiliary support portion 22 and the adjacent tooth receiving cavity is located within the crown 1 / 2 of the corresponding tooth crown. The position of the connection is limited to within the crown 1 / 2, and the coverage of the auxiliary support portion 22 on the side of the tooth is limited to avoid insufficient wrapping of the tooth due to excessive coverage, which affects the correction force on the tooth where the auxiliary support portion 22 is located. In some embodiments, the position of the connection is vertically lower than the occlusal surface of the tooth. Since a connection that is too high will cause the auxiliary support portion 22 to be too tilted and the supporting force to be insufficient, the position of the connection is further limited to be lower than the occlusal surface of the tooth to ensure that the auxiliary support portion 22 formed has sufficient supporting force.

[0048] In some embodiments, the connection between the upper boundary of the auxiliary support portion and the protruding structure is not higher than 1 / 2 of the protruding structure in the vertical direction. Figure 8Taking the auxiliary support portion 22" shown in the figure as an example, the position A' of the upper boundary is as shown in the figure, and a higher upper boundary position is set but not more than 1 / 2 of the raised structure. When wearing the shell-shaped dental device in this embodiment, the auxiliary support portion 22" can guide the occlusal pressure on the lingual wall 201 of the raised structure to the lingual side of the tooth. The height H of the raised structure can be the distance from the top surface of the raised structure to the occlusal surface of the tooth. The upper boundary position A' is limited to be not too high, so that the length direction of the auxiliary support portion 22" is closer to the perpendicular line of the tangent of the tooth at point B, so that the lingual side of the tooth can resist the occlusal pressure to the greatest extent.

[0049] In some embodiments, the top surface of the raised structure facing the opposing jaw is relatively flat, and can be used in cases where sagittal movement of the maxillary and / or mandibular dentition (such as intermaxillary traction, anterior traction) is required while removing intermaxillary occlusal interference.

[0050] It can be understood that the raised structure in this embodiment covers at least three teeth of the present jaw in the mesiodistal and medial directions. According to the design requirements of the correction scheme, it can also cover one tooth or two teeth, which will not be described in detail here. The raised structure is limited to cover at least one tooth to ensure that the raised structure has sufficient coverage position so as to have sufficient contact with the opposing jaw.

[0051] Regarding the manufacture of the above-mentioned shell-shaped dental appliance, the above-mentioned shell-shaped dental appliance can be manufactured by a 3D direct printing method or a hot pressing method to prepare a dental appliance designed by the design method of the dental appliance in the above-mentioned embodiment. Specifically, the specific manufacturing process in this embodiment can use a 3D printing method to print and produce the designed digital model of the shell-shaped dental appliance. This method prints all at once during the printing stage without the need for extra steps, and the resulting shell-shaped dental appliance has good firmness. The additive manufacturing method in this embodiment can be SLA (stereolithography) printing or DLP (digital light processing) printing, and other 3D printing technologies can also be used in actual applications, which are not listed here one by one.

[0052] In practical applications, the integrated shell-shaped dental device structure can also be obtained by hot pressing film forming technology. The specific hot pressing film forming process generally includes: 3D printing based on the corresponding digital maxillary model and a series of intermediate digital maxillary models to produce a physical maxillary model, and then hot pressing the membrane on the above-mentioned physical maxillary model to obtain a shell-shaped dental appliance containing the shape of teeth, and then cutting along the gum line or adjacent to the gum line on the shell-shaped dental appliance containing the shape of teeth to obtain a shell-shaped dental appliance that can accommodate teeth.

[0053] It can be seen that the shell-shaped dental device in this embodiment changes the shape of the part of the bottom of the jaw pad that exceeds the occlusal surface of the teeth by setting a protruding structure in the posterior teeth area, the upper boundary is connected to the bottom surface of the protruding part, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth receiving cavity, and the bottom support of the protruding structure is formed by contacting the teeth. By limiting the horizontal spacing between the auxiliary support part and the side wall of the adjacent tooth receiving cavity from the upper boundary to the lower boundary along the occlusal direction to gradually decrease, the occlusal force is converted into an oblique force, which is obliquely transmitted to the side wall of the adjacent teeth, so that the protruding part of the bottom of the protruding structure is sufficiently supported, avoiding the insufficient bearing pressure caused by the bottom of the protruding block being suspended, improving the compression resistance of the protruding structure, and reducing the problem of collapse during wearing. On the other hand, the occlusal pressure on the adjacent teeth is also partially converted into the oblique force on the side wall, reducing the possibility of the teeth covered by the protruding structure of the shell-shaped dental device in the embodiment of the present application being unexpectedly depressed. It can be seen that the implementation method of the present application changes the shape of the original bottom of the jaw pad and forms an auxiliary support portion in the part that exceeds the occlusal surface of the teeth, which can solve the problem of insufficient support force of the bottom surface of the jaw pad, further enhance the deformation resistance of the raised structure, and reduce the possibility of the covered teeth being unexpectedly depressed.

[0054] Another embodiment of the utility model provides a shell-shaped dental instrument. Compared with the previous embodiment, the main difference between this embodiment and the previous embodiment is that the shape of the top surface of the raised structure facing the opposing jaw is different. In the previous embodiment, the top surface shape is roughly flat, while in this embodiment, the top surface shape matches the concave and convex of the opposing jaw, thereby enhancing the effect of the raised structure on stabilizing the jaw position.

[0055] like Fig. 9 As shown, taking the corresponding opposing teeth as 205 as an example, the top surface 202 of the raised structure facing the opposing teeth matches the occlusal surface of the corresponding opposing teeth when the present jaw is in the target jaw position. The top surface 202 formed at this time has the cusp shape of the opposing teeth and can be regarded as an anatomical surface structure. The jaw pad generated in this way matches the opposing teeth and can be used to open the bite and remove the interference between the jaws in cases of posterior teeth locking jaws and anterior teeth crossbite, as well as to stabilize the jaw position, guide the adjustment, and correct cases of eccentric jaws. It can be understood that although the example corresponding to the opposing teeth is used for explanation in this embodiment, in actual applications, the opposing dentition can also be equipped with shell-shaped dental instruments, which are not listed one by one here.

[0056] It can be seen that the present embodiment provides a raised structure top surface that matches the concave and convex part of the opposing jaw, which enhances and stabilizes the jaw position after wearing, provides rich application scenarios for the shell-shaped dental device in this application, and expands the scope of application so that it can be promoted more flexibly and widely.

[0057] Another embodiment of the utility model provides a shell-shaped dental instrument. Compared with the previous embodiment, the present embodiment is roughly different in that the positional relationship between the auxiliary support part and the teeth is different. In the previous embodiment, the auxiliary support part is located on the lingual side of the teeth, while in the present embodiment, the auxiliary support part includes both the part located on the lingual side of the teeth and the part located on the buccal side of the teeth.

[0058] Combination Fig.10 As shown, the auxiliary support part 22 in this embodiment includes an auxiliary support part 221 located on the lingual side and an auxiliary support part 222 located on the buccal side, which supports from both the buccal side and the lingual side respectively to better enhance the support effect on the bottom. It can be understood that the structural form of the auxiliary support part on the buccal side is roughly the same as the structural form of the auxiliary support part on the lingual side, and will not be repeated here.

[0059] In other embodiments, the protruding portion of the bottom of the raised structure may include only the buccal side, and the corresponding auxiliary support portion 22 may be located only on the buccal side of the tooth. Its structure is roughly the same as the auxiliary support portion located on the lingual side in the aforementioned embodiment, and will not be repeated here.

[0060] It can be understood that, in addition to the auxiliary support parts arranged on the lingual side and / or the buccal side, the auxiliary support parts 22 can also be arranged on the mesial side of the tooth and / or the distal side of the tooth, which are not listed one by one here.

[0061] It can be seen that in this embodiment, auxiliary support parts with different settings are provided to support the protruding structures from different directions for protruding structures in different states, provide support force to the bottom surface of the protruding structures as much as possible, and further enhance the anti-deformation ability of the protruding structures.

[0062] Another embodiment of the present invention provides a shell-shaped dental device. Compared with the previous embodiment, the present embodiment is roughly different in that the upper boundary of the auxiliary support part is connected to the raised structure at different positions. In the previous embodiment, the upper boundary is connected to the bottom contour edge of the raised structure, while in the present embodiment, the upper boundary is connected to the position within the bottom upper contour, which reduces the volume occupied by the auxiliary support part and minimizes the foreign body sensation in the mouth after the shell-shaped dental device is worn. Fig.11 As shown, the upper boundary A 2 The bottom 21 of the connecting protrusion structure 20 is close to one end of the tooth.

[0063] Another embodiment of the utility model provides a shell-shaped dental instrument. Compared with the previous embodiment, this embodiment further defines that the side of the protruding structure is connected to the reinforcing part to be filled through a retaining part, thereby solving the problem that the reinforcing block is easy to fall out.

[0064] like Fig.12As shown, the raised structure 20 in this embodiment is shown, the auxiliary support part 22 is arranged on the buccal side of the tooth, and the buccal wall of the auxiliary support part 22 is provided with a retaining part 23 that is recessed inwardly, and the inner surface of the retaining part 23 matches the outer surface of the reinforcing block (not shown in the figure) filled into the raised structure to prevent the reinforcing block from falling out. Since the reinforcing block may fall out when it is filled into the raised structure, the concave-convex structure on the surface is increased, and the supporting area of ​​the inner surface of the raised structure against the reinforcing block is increased, thereby improving the retaining force on the reinforcing block. It can be understood that in addition to being arranged on the buccal wall, the retaining part 23 can also be arranged on the lingual wall (not shown in the figure), or two retaining parts 23 can be arranged, respectively on the buccal wall and the lingual wall.

[0065] It can be understood that after the reinforcement block is filled with the protruding structure 20, the inner surface of the retaining portion 23 and the outer surface of the reinforcement block are connected to each other, specifically through the curvature difference between the two. Although the retaining portion 23 in the above embodiment is concave inward, in some embodiments, the retaining portion 23 can be set to convex outward, or partially concave inward and partially convex outward, matching the concave and convex outer surface of the reinforcement block at the corresponding position. It can be seen that the morphological structure of the retaining portion 23 is diverse and can be set according to actual needs, and will not be listed one by one here.

[0066] It should be further explained that, in some embodiments, the retaining portion is strip-shaped and substantially parallel to the horizontal plane. Since the horizontal plane is substantially perpendicular to the direction in which the reinforcing block comes out, the resisting force at this time has a more effective barrier effect on the coming out.

[0067] It can be seen that in this embodiment, the shell-shaped dental instrument is further limited that the side of the protruding structure is connected to the reinforcement part to be filled through the retaining part, which solves the problem of easy slipping out when there is a need to fill the reinforcement block.

[0068] Another embodiment of the present invention provides a dental model, such as Fig.12 As shown, a dental model 30 for manufacturing an orthodontic appliance by hot pressing film forming is used to include: a tooth part 301, a gum part 302 extending from the bottom of the tooth part 301 to the root of the tooth, and a jaw pad part 303 arranged on the occlusal side of a preset tooth in the tooth part 301, the jaw pad part 303 close to the gum side of the present jaw at least partially exceeds the range of the occlusal surface of the tooth, an auxiliary support part is arranged between the exceeding part and the adjacent tooth part 301, the upper boundary of the auxiliary support part is connected to one end of the exceeding part close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth, the lower boundary is located in the crown 1 / 2 of the corresponding tooth crown, and the horizontal distance between the surface of the auxiliary support part away from the tooth part 301 and the adjacent tooth gradually decreases from the upper boundary to the lower boundary along the occlusal direction.

[0069] It should be noted that a limiting portion 3031 is provided on the lingual side wall of the jaw pad portion 303 of the dental model 30. In the subsequent hot pressing process, the limiting portion 3031 corresponds to a retaining portion for retaining the reinforcing block filled in.

[0070] To continue the explanation, in the manufacture of shell-shaped dental instruments, the dental model in this embodiment is used for the hot pressing process. After the dental model in this embodiment is printed out, the heated film is covered on the dental model, and a shell-shaped orthodontic appliance corresponding to the shape of the dental model is pressed out through vacuum adsorption.

[0071] 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.

[0072] 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 shell-shaped dental instrument, characterized in that: include: A shell-like body having a plurality of tooth receiving cavities, and a raised structure arranged on the occlusal side of the shell-like body, wherein the raised structure is hollow and communicates with the tooth receiving cavities, and the raised structure cooperates with the opposing jaw to adjust the jaw position relationship of the upper and lower jaws during occlusion; wherein the raised structure at least partially exceeds the range of the occlusal surface of the tooth located on one side close to the shell-like body, and the exceeded portion extends an auxiliary support portion toward the adjacent tooth receiving cavity, the upper boundary of the auxiliary support portion is connected to one end of the exceeded portion close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth receiving cavity, the lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal spacing between the auxiliary support portion and the side wall of the adjacent tooth receiving cavity gradually decreases from the upper boundary to the lower boundary along the occlusal direction.

2. The shell-shaped dental instrument according to claim 1, characterized in that: The auxiliary support portion includes a first sub-support portion located on the buccal or lingual side of the tooth, wherein the first sub-support portion has a straight bar-shaped cross section in the buccal and lingual direction, or an arc-shaped bar concave toward the protruding structure; and / or, The auxiliary supporting portion includes a second sub-supporting portion located at the mesial side or the distal side of the tooth, and the cross-section of the second sub-supporting portion in the mesial and distal upward direction is in the shape of a straight bar, or in the shape of an arc-shaped bar concave toward the convex structure.

3. The shell-shaped dental instrument according to claim 2, characterized in that: The angle between the straight strip cross section and the long axis of the tooth where the auxiliary supporting part is located is between 20° and 50°.

4. The shell-shaped dental instrument according to claim 2, characterized in that: The curvature range of the concave arc surface is 1500R-2500R.

5. The shell-shaped dental instrument according to claim 2, characterized in that: The angle between the tangent line of the concave arc surface at the highest point and the long axis of the tooth where the auxiliary supporting part is located is between 20° and 50°.

6. The shell-shaped dental instrument according to claim 1, characterized in that: The connection between the auxiliary support portion and the adjacent tooth receiving cavity is located within the crown 1 / 2 of the corresponding tooth crown.

7. The shell-shaped dental instrument according to claim 6, characterized in that: The position of the connection is vertically lower than the occlusal surface of the tooth.

8. The shell-shaped dental instrument according to claim 1, characterized in that: The connection point between the upper boundary of the auxiliary support portion and the protruding structure is no higher than 1 / 2 of the protruding height of the protruding structure in the vertical direction.

9. The shell-shaped dental instrument according to claim 1, characterized in that: The top surface of the raised structure facing the opposing jaw is concave-convexly matched with the occlusal surface of the teeth of the opposing jaw when the present jaw is in the target jaw position.

10. The shell-shaped dental device according to any one of claims 1 to 9, characterized in that: The protruding structure covers at least one tooth of the present jaw in the mesiodistal and upward directions.

11. The shell-shaped dental device according to any one of claims 1 to 9, characterized in that: The buccal and / or lingual sides of the raised structure are provided with a partially inwardly concave or outwardly convex retaining portion, the inner surface of the retaining portion matches the outer surface of the reinforcing block filled into the raised structure to prevent the reinforcing block from falling out.

12. A dental model for manufacturing an appliance by hot pressing film forming, characterized in that: include: A tooth portion, a gum portion extending toward the tooth root at the bottom of the tooth portion, and a jaw pad portion arranged on the occlusal side of a preset tooth in the tooth portion, wherein the jaw pad portion at least partially exceeds the range of the occlusal surface of the tooth located close to the gum side of the jaw, and an auxiliary support portion is arranged between the exceeding portion and the adjacent tooth portion, wherein the upper boundary of the auxiliary support portion is connected to one end of the exceeding portion close to the adjacent tooth receiving cavity, and the lower boundary is connected to the buccal wall and / or lingual wall of the adjacent tooth, and the lower boundary is located within the crown 1 / 2 of the corresponding tooth crown, and the horizontal distance between the surface of the auxiliary support portion away from the tooth portion and the adjacent tooth gradually decreases from the upper boundary to the lower boundary along the occlusal direction.

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