Dental instrument

Abstract

The utility model provides a dental instrument. The dental instrument comprises a shell-shaped appliance and a guide plate arranged on the shell-shaped appliance, the guide plate comprises at least one guide plate body, the guide plate body comprises a connecting end, an acting surface and a non-acting surface, the acting surface is used for acting on a pair jaw dentition or a pair jaw shell-shaped appliance when the guide plate body is in contact with a pair jaw, and the acting surface and the non-acting surface are both connected to the connecting end; the connecting rib is connected with the non-acting surfaces of the at least two guide plate bodies, or the connecting rib is connected with at least one non-acting surface of the guide plate body and the shell-shaped appliance; the overall strength of the guide plate can be improved, and the risk of guide plate deformation or collapse in the correction process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental treatment technical field, especially a dental instrument. BACKGROUND

[0002] In recent years, due to the advantages such as appearance, convenience and benefit to clean, the shell-shaped dental appliance based on high polymer material is more and more popular in the field of invisible tooth correction. For the cases such as deep overbite, reverse bite, lock jaw, lateral jaw deviation and the like commonly seen in clinic, the guide plate is often used to open the bite to realize tooth correction, and some other auxiliary functions are also accompanied, such as tooth depression, torque control, leading or retracting the lower jaw and the like.

[0003] In the prior art, the guide plate is generally integrally formed with the shell-shaped appliance to form an integrated dental appliance. Due to the influence that the material of the shell-shaped appliance itself is not suitable to be too hard and too thick, the overall strength of the guide plate is also poor, especially for the large-volume cavity guide plate, in the use process, due to the large jaw position force, the deformation, collapse and even biting damage are prone to occur. SUMMARY

[0004] The utility model discloses a dental appliance.

[0005] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical scheme: a dental appliance, comprising a shell-shaped appliance and a guide plate arranged on the shell-shaped appliance; the guide plate comprises:

[0006] At least one guide plate body, the guide plate body comprises a connecting end, an action surface and a non-action surface, the connecting end is connected to the shell-shaped appliance, the action surface is used for the guide plate body to contact the opposite jaw when acting on the opposite jaw dentition or the opposite jaw shell-shaped appliance, and the action surface and the non-action surface are connected to the connecting end;

[0007] A connecting rib is connected to the non-action surfaces of at least two guide plate bodies, or the connecting rib is connected to at least one non-action surface of the guide plate body and the shell-shaped appliance.

[0008] As a further improved technical scheme of the utility model, the width of the cross section of the connecting rib gradually decreases in the direction away from the shell-shaped appliance, or the width of the cross section of the connecting rib is consistent.

[0009] As a further improved technical scheme of the utility model, the connecting rib satisfies at least one of the following conditions:

[0010] The distance between the top end of the connecting rib and the shell-shaped appliance is not less than 1mm;

[0011] The top end of the connecting rib is at a distance from the shell-shaped appliance that is not greater than the protruding height of the body of the guide plate to which the connecting rib is connected.

[0012] As a further improved technical scheme of the present application, the connecting rib has a connecting section connected to the body of the guide plate; in a direction away from the body of the guide plate corresponding to the connecting section, the connecting section satisfies at least one of the following:

[0013] The cross section of the connecting section gradually decreases;

[0014] The distance of the top end of the connecting section from the shell-shaped appliance gradually decreases.

[0015] As a further improved technical scheme of the present application, the body of the guide plate includes a side wall surface in the direction of the dental arch, and the connecting rib is connected to the side wall surface; and the connecting rib extends in the direction of the dental arch.

[0016] As a further improved technical scheme of the present application, in the direction of the dental arch, the extension direction of the connecting rib is perpendicular to the side wall surface.

[0017] As a further improved technical scheme of the present application, the connecting rib has a bottom end close to the shell-shaped appliance, and the bottom end extends from the body of the guide plate in a direction away from the body of the guide plate;

[0018] The bottom end and the shell-shaped appliance have a spacing therebetween; or the bottom end is connected to the shell-shaped appliance.

[0019] As a further improved technical scheme of the present application, the shell-shaped appliance has a cavity for accommodating teeth; at least one connecting rib is in an integral structure with the shell-shaped appliance, or at least one body of the guide plate is in an integral structure with the shell-shaped appliance;

[0020] At least one connecting rib is in a solid structure or at least one connecting rib has a cavity in communication with the cavity;

[0021] At least one body of the guide plate is in a solid structure or at least one body of the guide plate has a cavity in communication with the cavity.

[0022] As a further improved technical scheme of the present application, the dental instrument further includes a reinforcing block matched with the cavity.

[0023] As a further improved technical scheme of the present application, the guide plate includes at least two bodies of the guide plate, and the at least two bodies of the guide plate are arranged at intervals in the direction of the dental arch; or at least one non-acting surface of at least part of the bodies of the guide plate is connected to at least two connecting ribs, and the at least two connecting ribs are arranged at intervals along the surface of the shell-shaped appliance.

[0024] As a further improved technical scheme of the utility model, the guide plate is arranged in at least one of the following regions of the shell-shaped appliance: the lingual side, the labial side, the buccal side and the gnathal surface.

[0025] The dental instrument in the utility model has the advantages that the guide plate in the utility model is provided with connecting ribs, the connecting ribs and the guide plate body jointly form an integral guide plate, the strength of the guide plate body is enhanced, and the overall strength of the guide plate is further enhanced; meanwhile, when the guide plate comprises a plurality of guide plate bodies, the large-volume guide plate is arranged as a plurality of small-volume guide plate bodies, the strength of the guide plate as a whole is improved, and the risk of deformation or collapse of the guide plate during the treatment process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is the dental instrument in the first embodiment of the utility model related to the arrangement position of the guide plate;

[0027] Figure 2 is the dental instrument in the second embodiment of the utility model related to the arrangement position of the guide plate;

[0028] Figure 3 is the dental instrument in the third embodiment of the utility model related to the arrangement position of the guide plate;

[0029] Figure 4 is a structural schematic view of the dental instrument in the fourth embodiment of the utility model;

[0030] Figure 5 is a structural schematic view of the dental instrument in the fifth embodiment of the utility model;

[0031] Figure 6 is a structural schematic view of the dental instrument in the sixth embodiment of the utility model;

[0032] Figure 7 is Figure 1 is a sectional view along A-A direction in the embodiment;

[0033] Figure 8 is a sectional view along A-A direction in the embodiment with a gap between the bottom end of the connecting rib and the shell-shaped appliance;

[0034] Figure 9 is Figure 1 is a sectional view along B-B direction in the embodiment;

[0035] Figure 10 is Figure 5 is a sectional view along C-C direction in the embodiment;

[0036] Figure 11 is a sectional view along C-C direction in the embodiment with a gap between the bottom end of the connecting rib and the shell-shaped appliance;

[0037] Figure 12 is a cross-sectional view of a connecting rib in some embodiments. DETAILED DESCRIPTION

[0038] The utility model will be described in detail below in combination with each embodiment shown in the drawings. Please refer to Figures 1 to 12 shown, the preferred embodiments of the utility model. It should be noted that these embodiments are not limited to the utility model, the function, method, or equivalent transformation or substitution of structure made by those skilled in the art according to these embodiments, all belong to the protection scope of the utility model.

[0039] It should be noted that unless otherwise specifically defined and limited, the terms 'connection', 'contact', 'provided with' and the like should be understood broadly, for example, connection can be direct connection or indirect connection through intermediate medium, can be fixed connection or movable connection or detachable connection or integral connection, and contact can be direct contact or indirect contact through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0040] Please refer to Figures 1 to 12 shown, the utility model provides a dental instrument 10, the dental instrument 10 includes shell-shaped appliance 1, the guide plate 2 of being arranged at the shell-shaped appliance 1. The shell-shaped appliance 1 is formed with the cavity for accommodating teeth, the guide plate 2 is arranged at the surface of the shell-shaped appliance 1 at the preset position to support the opposite jaw dentition.

[0041] It can be understood that the guide plate 2 is arranged corresponding to the teeth of one of the upper jaw and the lower jaw, and the teeth of the other of the upper jaw and the lower jaw abut against the guide plate 2 to perform tooth correction. The above-mentioned'supporting the opposite jaw dentition' includes directly supporting the opposite jaw dentition by the guide plate 2 or indirectly supporting the opposite jaw dentition. Specifically, when the shell-shaped appliance 1 is not worn on the opposite jaw dentition, the guide plate 2 directly supports the opposite jaw dentition, and when the shell-shaped appliance 1 is worn on the opposite jaw dentition, the guide plate 2 indirectly supports the opposite jaw dentition through the shell-shaped appliance 1 of the opposite jaw.

[0042] The above-mentioned preset position includes any position of at least one of the following regions of the shell-shaped appliance 1: the lingual side, the labial side, the buccal side and the facial side. It can be understood that the number of the guide plates 2 and the positions of the guide plates 2 can be set according to the specific needs in each step of tooth correction. That is, one surface of the shell-shaped appliance 1 can be provided with one or more guide plates 2, and the specific structure / size, etc. of each guide plate 2 of the plurality of guide plates 2 can be set according to the specific correction needs, that is, it can be set to be the same or different.

[0043] In combination withFigure 1 As shown in the first embodiment of the present application, the guide plate 2 is arranged on the lingual side of the anterior teeth of the shell-shaped appliance 1, at this time, the guide plate 2 can be used as a reinforced flat guide plate, an inclined guide plate, a lingual spike or other functional guide plate, and the stability during the adjustment of the jaw position is effectively improved. Figure 2 As shown in the second embodiment of the present application, the guide plate 2 is arranged on the lingual side of the posterior teeth, of course, it can also be arranged on the buccal side of the posterior teeth, at this time, the horizontal adjustment of the jaw position can be realized. Figure 3 As shown in the third embodiment of the present application, the guide plate 2 is arranged on the jaw surface, at this time, the guide plate 2 can be used as a reinforced jaw pad or guide plate structure to realize the opening of the bite or the adjustment of the jaw position.

[0044] The guide plate 2 comprises at least one guide plate body 21, and the guide plate body 21 is a three-dimensional independent structure, and the size and shape of each guide plate body 21 can be freely selected to meet the personalized needs.

[0045] In a specific embodiment, when the guide plate 2 comprises at least two guide plate bodies 21, the at least two guide plate bodies 21 are arranged in the dental arch direction. For the shell-shaped appliance 1, the length in the dental arch direction is much larger than the length in other directions, such as the length in the dental arch direction is much larger than the length in the buccal-lingual direction and the length in the height direction, so that the multiple guide plate bodies 21 are arranged in the dental arch direction on the shell-shaped appliance 1, which is more conducive to the arrangement of each guide plate body 21 on the shell-shaped appliance 1.

[0046] The guide plate body 21 comprises a connecting end, an active surface and an inactive surface, and the active surface and the inactive surface are connected to the connecting end. The connecting end, the active surface and the inactive surface jointly surround to form the guide plate body 21.

[0047] In the present embodiment, the connecting end refers to one end of the guide plate body 21 connected to the shell-shaped appliance 1, and the guide plate body 21 is connected to the shell-shaped appliance 1 through the connecting end. When the guide plate body 21 contacts the opposite jaw, the active surface acts on the opposite jaw teeth or the opposite jaw shell-shaped appliance, such as being used to support the opposite jaw teeth, and the inactive surface is connected to the edge of the active surface and the edge of the connecting end to surround to form the guide plate body 21. In a specific embodiment, for one guide plate body 21, the side facing the opposite jaw is the active surface, and the other side is the inactive surface, of course, it is not limited thereto.

[0048] In some embodiments, at least one of the guide plate bodies 21 is integrally formed with the shell-shaped aligner 1. In some embodiments, all of the guide plate bodies 21 are integrally formed with the shell-shaped aligner 1. In some embodiments, the shell-shaped aligner 1 with the guide plate bodies 21 is integrally formed by a compression molding process.

[0049] At least one of the guide plate bodies 21 has a cavity that is in communication with the cavity of the shell-shaped aligner 1. The dental appliance 10 further comprises a reinforcing block that is adapted to the cavity of the guide plate body 21 to further improve the overall strength of the guide plate 2 and reduce the risk of deformation or collapse of the guide plate 2 during the orthodontic treatment. Of course, the present application is not limited thereto. In some embodiments, the guide plate body 21 can be solid when the volume of the guide plate body 21 is small, i.e., the cavity of the guide plate body 21 is small enough.

[0050] The guide plate 2 further comprises a connecting rib 22 that connects at least two non-working surfaces of the guide plate bodies 21 or connects at least one non-working surface of the guide plate body 21 and the shell-shaped aligner 1. In some embodiments, the guide plate 2 has the connecting rib 22 that is integrally formed with the guide plate body 21 to further improve the strength of the guide plate body 21 and further improve the overall strength of the guide plate 2.

[0051] In some embodiments, the guide plate 2 has only one guide plate body 21, and the connecting rib 22 connects at least one non-working surface of the guide plate body 21 and the shell-shaped aligner 1. In some embodiments, the connecting rib 22 is connected to the non-working surface of the guide plate body 21 at one end and connected to the shell-shaped aligner 1 at the other end. In some embodiments, the connecting rib 22 connects the guide plate body 21 and the shell-shaped aligner 1. In some embodiments, the connecting rib 22 is integrally formed with the guide plate body 21. Figure 4 In some embodiments, the guide plate 2 has at least two guide plate bodies 21, and the connecting rib 22 is connected to the non-working surfaces of the adjacent guide plate bodies 21. Of course, the present application is not limited thereto.

[0052] In some embodiments, the guide plate 2 has at least two guide plate bodies 21, and the connecting rib 22 is connected to the non-working surfaces of the adjacent guide plate bodies 21. Of course, the present application is not limited thereto. Figures 1 to 3In the shown embodiment, the connecting rib 22 can be arranged only between two adjacent guide plate bodies 21, and the connecting rib 22 between the two adjacent guide plate bodies 21 connects the non-working surfaces of the two adjacent guide plate bodies 21 to connect the two adjacent guide plate bodies 21 and improve the overall strength of the guide plate 2 and reduce the risk of deformation or collapse of the guide plate 2 during the treatment.

[0053] Specifically, the connecting rib 22 between the two adjacent guide plate bodies 21 connects the opposite non-working surfaces of the two adjacent guide plate bodies 21.

[0054] In the embodiment in which the guide plate 2 includes at least two guide plate bodies 21, while the connecting rib 22 connecting the two adjacent guide plate bodies 21 is arranged, the connecting rib 22 connecting the guide plate body 21 and the shell-shaped aligner 1 can also be arranged on other non-working surfaces of the guide plate body 21 to further improve the overall strength of the guide plate 2, and at the same time, the local structural strength of the shell-shaped aligner 1 can also be improved, thereby improving the treatment effect. Figure 5 As shown, the dental instrument 10 in the fifth embodiment of the utility model, in the embodiment, the guide plate 2 includes a plurality of spaced guide plate bodies 21, the connecting rib 22 includes a first connecting rib 221 for connecting two adjacent guide plate bodies 21, and a second connecting rib 222 for connecting at least one non-working surface of the guide plate body 21 and the shell-shaped aligner 1. Specifically, the non-working surface at the end of the guide plate body 21 at the end in the arrangement direction is connected to the second connecting rib 222 to further improve the strength of the guide plate body 21 at the end in the arrangement direction, thereby improving the overall strength of the guide plate 2, and at the same time, the local structural strength of the shell-shaped aligner 1 can also be improved, thereby improving the treatment effect.

[0055] Specifically, the connecting rib 22 and the guide plate body 21 can be arranged on the crown surface of the shell-shaped aligner 1 or at the interdental space of the shell-shaped aligner 1.

[0056] It can be understood that the structure, size, etc. of each guide plate body 21 and each connecting rib 22 in one guide plate 2 can be the same or different, and can be designed according to specific requirements. At the same time, in the embodiment in which the dental instrument 10 includes a plurality of guide plates 2, the structure, size, etc. of each guide plate 2 can be the same or different, and can be designed according to specific treatment requirements.

[0057] Moreover, the number of connecting ribs 22 connected to one guide plate body 21 can be set according to specific requirements. It can be understood that the more the number of connecting ribs 22 connected to one guide plate body 21, the better the overall strength of the guide plate 2.

[0058] Furthermore, the guide plate body 21 includes a side wall surface located in the dental arch direction. This side wall surface is a non-functional surface, and the connecting rib 22 is connected to the side wall surface, extending along the dental arch direction. On one hand, for the shell-shaped orthodontic appliance 1, its length in the dental arch direction is much greater than its length in other directions. Therefore, connecting the connecting rib 22 to the side wall surface of the guide plate body 21 in the dental arch direction, and extending the connecting rib 22 along the dental arch direction, provides a larger design space for the connecting rib 22, which is more conducive to the arrangement of the connecting rib 22 on the shell-shaped orthodontic appliance 1. On the other hand, the fact that the connecting rib 22 extends along the dental arch direction can significantly enhance the rigidity of the dental instrument 10 in the dental arch direction. When the two ends of the shell-shaped orthodontic appliance 1 are compressed in the dental arch direction, the connecting rib 22 can effectively resist the compression of the shell-shaped orthodontic appliance 1, thereby effectively enhancing the lateral expansion effect of the shell-shaped orthodontic appliance 1. Of course, this is not a limitation. In other optional embodiments, the extension direction of the connecting rib 22 can be any straight line or curve.

[0059] In one specific embodiment, the extending direction of the connecting rib 22 along the dental arch direction is perpendicular to the sidewall surface. Of course, this is not a limitation.

[0060] Furthermore, at least two connecting ribs 22 are connected to at least one non-functional surface of at least a portion of the guide plate body 21, and the at least two connecting ribs 22 are arranged at intervals along the surface of the shell-shaped orthodontic appliance 1. For example, when the guide plate 2 is disposed on the lingual, labial, or buccal side, and the connecting ribs 22 are connected to the sidewall of the guide plate body 21 in the direction of the dental arch, the at least two connecting ribs 22 connected to the same non-functional surface of the same guide plate body 21 are arranged at intervals along the height direction of the shell-shaped orthodontic appliance 1; when the guide plate 2 is disposed on the occlusal surface, and the connecting ribs 22 are connected to the sidewall of the guide plate body 21 in the direction of the dental arch, the at least two connecting ribs 22 connected to the same non-functional surface of the same guide plate body 21 are arranged at intervals along the lingual-buccal direction of the occlusal surface.

[0061] Specifically, such as Figures 1 to 5 In the embodiment shown, only one connecting rib 22 is provided on one non-functional surface of the guide plate body 21. Figure 6 As shown, in the sixth embodiment of this utility model, two connecting ribs 22 are provided on one non-functional surface of the guide plate body 21, specifically: two connecting ribs 22 are provided between two adjacent guide plate bodies 21.

[0062] It should be noted that the number of connecting ribs 22 between two adjacent guide plate bodies 21 in a guide plate 2 can be set to be the same or different.

[0063] The cross-sectional dimension of the connecting rib 22 is smaller than the cross-sectional dimension of the guide plate body 21 connected with the connecting rib 22. Herein, the cross-section refers to a section perpendicular to the arrangement direction of the guide plate body 21 and the connecting rib 22. For the embodiment in which the connecting rib 22 is arranged on one side of the guide plate body 21 in the dental arch direction, the cross-section refers to a section perpendicular to the dental arch direction.

[0064] Specifically, as shown in Figure 7 、 Figure 9 , the connecting rib 22 has a top end 223 away from the shell-shaped appliance 1. When the connecting rib 22 connects two adjacent guide plate bodies 21, the top end 223 extends between the two adjacent guide plate bodies 21. When the connecting rib 22 connects one non-working surface of the guide plate body 21 and the shell-shaped appliance 1, the top end 223 extends between the non-working surface and the shell-shaped appliance 1. The distance H between the top end 223 and the shell-shaped appliance 1 is not greater than the protruding height of the guide plate body 21 connected with the connecting rib 22. This avoids the connecting rib 22 being too high to affect the comfort of the user wearing the dental appliance 10.

[0065] The “protruding height” mentioned above can be understood as the distance between one end of the guide plate body 21 away from the shell-shaped appliance 1 and the surface of the shell-shaped appliance 1.

[0066] In some optional embodiments, the distance H between the top end 223 of the connecting rib 22 between two adjacent guide plate bodies 21 and the shell-shaped appliance 1 is not less than 1 mm, so that the top end of the connecting rib 22 between the two adjacent guide plate bodies 21 is continuously transitioned. The distance H between the top end of the connecting rib 22 connecting one non-working surface of the guide plate body 21 and the shell-shaped appliance 1 and the shell-shaped appliance 1 can be gradually reduced to 0 in the direction away from the guide plate body 21, so that there is no step structure between the connecting rib and the shell-shaped appliance 1, improving the comfort of the user.

[0067] In one embodiment, the connecting rib 22 has a connecting section connected with the guide plate body 21. In the direction away from the guide plate body 21 corresponding to the connecting section, the cross-section of the connecting section gradually decreases. This makes the connection between the connecting rib 22 and the guide plate body 21 more smooth, and can further improve the overall strength of the guide plate 2.

[0068] Specifically, the cross-section gradually decreasing includes the width of the cross-section gradually decreasing and / or the height of the cross-section gradually decreasing.

[0069] In combination with Figure 7 、 Figure 9 、 Figure 10As shown, in this embodiment, the aforementioned gradual reduction in cross-section includes a gradual reduction in the width of the cross-section, and simultaneously, a gradual reduction in the height of the cross-section. Specifically, the distance between the top end 223 of the connecting segment and the shell-shaped orthodontic appliance 1 gradually decreases. Along the direction away from the guide plate body 21, the top end 223 of the connecting rib 22 is generally a concave arc surface facing inward toward the shell-shaped orthodontic appliance 1. Of course, this is not a limitation. In other embodiments, the connecting rib 22 located between two adjacent guide plate bodies 21 may also be configured to have a consistent cross-section in the middle section, and the cross-section of the connecting segments at both ends gradually increases toward the guide plate body 21.

[0070] Combination Figure 12 As shown, in some optional embodiments, the width of the cross-section of the connecting rib 22 can be set to gradually decrease along the direction away from the shell-shaped orthodontic appliance 1 to facilitate subsequent demolding. In this case, the profile of the cross-section of the connecting rib 22 can be as follows: Figure 12 As shown in (a), it is a straight line, or it can be like... Figure 12 As shown in (c), it has a smooth arc shape, or it can also be like... Figure 12 As shown in (d), it has an uneven arc shape. It can be seen that the outline shape of the cross-section of the connecting rib 22, the inclination angle of the connecting rib 22, etc., can be set according to specific requirements.

[0071] Combination Figure 12 As shown in (b), in another optional embodiment, the cross-section of the connecting rib 22 can also be set to have a uniform width along the direction away from the shell-shaped orthodontic appliance 1, so that the connecting rib 22 has greater strength, thereby improving the overall strength of the guide plate 2 and the local strength of the shell-shaped orthodontic appliance 1.

[0072] The connecting rib 22 has a bottom end 224 disposed opposite to the top end 223, and the bottom end 224 is closer to the shell-shaped orthodontic appliance 1 than the top end 223. The bottom end 224 extends from the guide plate body 21 in a direction away from the guide plate body 21. When the connecting rib 22 connects two adjacent guide plate bodies 21, the bottom end 224 extends between the two adjacent guide plate bodies 21; when the connecting rib 22 connects a non-functional surface of the guide plate body 21 to the shell-shaped orthodontic appliance 1, the bottom end 224 extends from the connection with the non-functional surface in a direction away from the guide plate body 21, that is, towards the shell-shaped orthodontic appliance 1.

[0073] Specifically, for the connecting rib 22 connecting a non-functional surface of the guide plate body 21 to the shell-shaped orthodontic appliance 1, the connecting rib 22 includes a first end connected to the non-functional surface, a second end connected to the shell-shaped orthodontic appliance 1, and a connecting rib body located between the first end and the second end. The aforementioned top end 223 and bottom end 224 both refer to the top end 223 and bottom end 224 of the connecting rib body.

[0074] Combination Figure 7 , Figure 9 , Figure 10 As shown, in some optional embodiments, the bottom end 224 is connected to the shell-shaped orthodontic appliance 1, which can improve the local structural strength of the shell-shaped orthodontic appliance 1, thereby improving the orthodontic effect. In this case, for Figure 7 The connecting rib 22 located between two adjacent guide plate bodies 21 has its bottom end 224 connected to the shell-shaped orthodontic appliance 1, and its two opposite sides are respectively connected to the corresponding guide plate bodies 21. For Figure 10 The connecting rib 22 has a portion of its bottom end 224 connected to the shell-shaped orthodontic appliance 1, and a portion of its bottom end 224 connected to the guide plate body 21, which can be understood as one end face of the two adjacent end faces of the connecting rib 22 being connected to the guide plate body 21, and the other end face being connected to the shell-shaped orthodontic appliance 1. In a specific embodiment, the connecting rib 22, the guide plate body 21, and the shell-shaped orthodontic appliance 1 are an integral structure. In this case, the shell-shaped orthodontic appliance 1 with the guide plate 2 can be integrally formed by a molding and demolding process to form the dental instrument 10, simplifying the preparation of the dental instrument 10 and its orthodontic effect.

[0075] Combination Figure 8 , Figure 11 As shown, in some optional embodiments, there is a gap between the bottom end 224 and the shell-shaped orthodontic appliance 1, that is, the bottom end 224 and the shell-shaped orthodontic appliance 1 are not connected. In a specific embodiment, the connecting rib 22, the guide plate body 21 and the shell-shaped orthodontic appliance 1 are an integral structure. In this case, the shell-shaped orthodontic appliance 1 with the guide plate 2 can be integrally formed by processes such as 3D printing to form the dental instrument 10, simplifying the preparation of the dental instrument 10 and its orthodontic effect.

[0076] In some optional embodiments, the at least one connecting rib 22 is in one-piece structure with the shell-shaped aligner 1, and the at least one connecting rib 22 has a cavity communicating with the cavity, and the dental instrument 10 further comprises a reinforcing block matched with the cavity to further improve the overall strength of the guide plate 2 and reduce the risk of deformation or collapse of the guide plate 2 during the treatment. Of course, this is not limiting, and in other optional embodiments, when the volume of the connecting rib 22 is small, i.e., the cavity on the connecting rib 22 is small enough, the connecting rib 22 can also be provided as a solid structure.

[0077] Compared with the prior art, the guide plate 2 in the dental instrument 10 in the present application can enhance the strength of the guide plate body 21 and further enhance the overall strength of the guide plate 2 by setting the connecting rib 22 which forms the overall guide plate 2 together with the guide plate body 21. Meanwhile, when the guide plate 2 comprises a plurality of guide plate bodies 21, the overall strength of the guide plate 2 can be improved and the risk of deformation or collapse of the guide plate 2 during the treatment can be reduced by setting the large-volume guide plate 2 as a plurality of small-volume guide plate bodies 21.

[0078] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0079] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A dental instrument, characterized in that, Includes a shell-shaped orthodontic appliance and a guide plate disposed on the shell-shaped orthodontic appliance; the guide plate includes: At least one guide plate body, the guide plate body includes a connecting end, an active surface and a non-active surface, the connecting end is connected to the shell-shaped orthodontic appliance, the active surface is used to act on the opposing dentition or the opposing shell-shaped orthodontic appliance when the guide plate body contacts the opposing dentition, and both the active surface and the non-active surface are connected to the connecting end; A connecting rib connects at least two non-functional surfaces of the guide plate body, or the connecting rib connects at least one non-functional surface of the guide plate body to the shell-shaped orthodontic appliance.

2. The dental instrument as described in claim 1, characterized in that: Along the direction away from the shell-shaped orthodontic appliance, the width of the cross-section of the connecting rib gradually decreases, or the width of the cross-section of the connecting rib is uniform.

3. The dental instrument as described in claim 1, characterized in that: The connecting rib satisfies at least one of the following: The distance between the top of the connecting rib and the shell-shaped orthodontic appliance is not less than 1 mm; The distance from the top of the connecting rib to the shell-shaped orthodontic appliance is not greater than the protrusion height of the guide plate body connected to the connecting rib.

4. The dental instrument as described in claim 1, characterized in that: The connecting rib has a connecting segment connected to the guide plate body; along the direction away from the guide plate body corresponding to the connecting segment, the connecting segment satisfies at least one of the following: The cross-section of the connecting segment gradually decreases; The distance from the top of the connecting segment to the shell-shaped orthodontic appliance gradually decreases.

5. The dental instrument as claimed in claim 1, characterized in that: The guide plate body includes a side wall surface located in the direction of the dental arch, the connecting rib is connected to the side wall surface, and the connecting rib extends along the direction of the dental arch.

6. The dental instrument as described in claim 5, characterized in that: Along the dental arch direction, the extending direction of the connecting rib is perpendicular to the side wall surface.

7. The dental instrument as claimed in claim 1, characterized in that: The connecting rib has a bottom end near the bottom of the shell-shaped orthodontic appliance, and the bottom end extends from the guide plate body in a direction away from the guide plate body; There is a gap between the bottom end and the shell-shaped orthodontic appliance, or the bottom end is connected to the shell-shaped orthodontic appliance.

8. The dental instrument as claimed in claim 1, characterized in that: The shell-shaped orthodontic appliance has a cavity for accommodating the teeth; At least one connecting rib is integrally formed with the shell-shaped orthodontic appliance, or at least one guide plate body is integrally formed with the shell-shaped orthodontic appliance; At least one connecting rib is a solid structure or at least one connecting rib has a cavity communicating with the cavity; At least one guide plate body is a solid structure or at least one guide plate body has a cavity that communicates with the cavity.

9. The dental instrument as claimed in claim 8, characterized in that: The dental instrument also includes a reinforcing block adapted to the cavity.

10. The dental instrument according to any one of claims 1-9, characterized in that: The guide plate includes at least two guide plate bodies, which are spaced apart along the dental arch direction; or, at least a portion of the guide plate bodies have at least one non-functional surface connected to at least two connecting ribs, which are spaced apart along the surface of the shell-shaped orthodontic appliance.

11. The dental instrument according to any one of claims 1-9, characterized in that: The guide plate is located in at least one of the following areas of the shell-shaped orthodontic appliance: the lingual side, the labial side, the buccal side, and the maxillofacial surface.

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