Tooth correction device

Abstract

The utility model relates to the technical field of tooth correction, and discloses a tooth correction device, which comprises a jaw pad and an extraoral arch, the front end of a lip contact surface of the jaw pad is provided with an opening, the opening horizontally extends along the lip contact surface to form a clamping groove, the extraoral arch comprises an inner arch, and at least part of the inner arch is arranged in the clamping groove. The tooth correction device disclosed by the utility model is long in service life and good in stability of correction effect.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to an orthodontic device. Background Technology

[0002] Invisible aligners are primarily made of elastic, transparent polymer materials, making them virtually invisible when worn on the teeth. The orthodontic process is also relatively comfortable and convenient, thus gaining increasing popularity among patients. By combining invisible aligners with an extraoral arch, the growth direction of teeth and jawbones can be corrected, making them particularly suitable for skeletal malocclusions in children and adolescents.

[0003] However, the traction between the existing clear aligners and the external oral arch is mainly achieved by directly inserting the external oral arch into the external hole structure of the clear aligner. The external oral arch is prone to deflection, and the stress between the external oral arch and the clear aligner is relatively concentrated. This affects the treatment effect and the clear aligner is prone to wear and deformation, increasing the cost of consumables. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a dental orthodontic device that improves the service life and stability of the orthodontic effect.

[0005] To solve the above-mentioned technical problems, this utility model provides a dental orthodontic device, including a jaw pad and an external bow. The front end of the lip contact surface of the jaw pad is provided with an opening, and the opening extends horizontally along the lip contact surface to form a slot. The external bow includes an inner bow, and at least a portion of the inner bow is disposed in the slot.

[0006] As an improvement to the above solution, the distance between the top surface and the bottom surface of the card slot gradually narrows towards the side closer to the lip contact surface.

[0007] As an improvement to the above solution, the inner bow is provided with bow feet, and the two ends of the slot are provided with corresponding locking holes, with the bow feet extending into the locking holes.

[0008] As an improvement to the above solution, the card hole is tangent to the groove wall on the side of the card slot away from the lip contact surface.

[0009] As an improvement to the above solution, the card hole is tangent to the top surface of the card slot.

[0010] As an improvement to the above solution, one end of the card hole communicates with the card slot, and the other end penetrates the rear end face of the jaw pad.

[0011] As an improvement to the above solution, the two ends of the inner bow abut against the two ends of the slot, respectively.

[0012] As an improvement to the above solution, the external bow also includes an external bow connected to the internal bow, the external bow including a connecting section connected to the internal bow, the connecting section being embedded in the slot.

[0013] As an improvement to the above solution, the slot is provided with a filler, which is connected to the inner bow.

[0014] As an improvement to the above solution, the distance between the top and bottom of the slot on the lip contact surface is 0.5 to 4 mm.

[0015] Implementing this utility model has the following beneficial effects:

[0016] This utility model discloses a dental orthodontic device that combines an occlusal pad with an external arch. An opening is provided at the front end of the occlusal pad's labial contact surface, and the opening extends horizontally along the labial contact surface to form a slot. At least part of the inner arch of the external arch is located within the slot. The force transmission between the inner arch and the occlusal pad is achieved directly through the front end of the occlusal pad. The slot, which extends horizontally along the labial contact surface, makes it easier to maintain the plane of the inner arch level. At the same time, it increases the effective traction area of ​​the inner arch on the occlusal pad, allowing the traction force of the external arch to act more evenly on the occlusal pad. This effectively avoids stress concentration and the resulting deformation. During orthodontic treatment, the connection between the external arch and the occlusal pad is more stable, the occlusal pad has a longer service life, and it is easier to maintain a stable orthodontic effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first embodiment of a dental orthodontic device according to the present invention;

[0018] Figure 2 yes Figure 1 A schematic diagram of the decomposed structure;

[0019] Figure 3 This is a schematic diagram of the jaw pad structure in the second embodiment of a dental orthodontic device of this utility model;

[0020] Figure 4 yes Figure 1 or Figure 3 A cross-sectional view of the jaw pad through the plane of symmetry;

[0021] Figure 5 yes Figure 3 A schematic diagram of the longitudinal section of the jaw pad through the groin hole. Detailed Implementation

[0022] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2As shown, this utility model discloses an embodiment of a dental orthodontic device, including a jaw pad 1 and an external bow 2. The front end of the lip contact surface 11 of the jaw pad 1 is provided with an opening, and the opening extends horizontally along the lip contact surface 11 to form a slot 111. The external bow 2 includes an inner bow 21, and at least a portion of the inner bow 21 is disposed in the slot 111.

[0024] In this embodiment, the jaw pad 1 is combined with the extraoral arch 2. An opening is provided at the front end of the lip contact surface 11 of the jaw pad 1, and the opening extends horizontally along the lip contact surface 11 to form a groove 111. The inner arch 21 of the extraoral arch 2 is at least partially disposed in the groove 111. The force transmission between the inner arch 21 and the jaw pad 1 is directly achieved through the front end of the jaw pad 1. The groove 111 formed by extending horizontally along the lip contact surface 11 makes it easier to keep the plane of the inner arch 21 horizontal, while increasing the effective traction area of ​​the inner arch 21 on the jaw pad 1. The traction force of the extraoral arch 2 can be applied to the jaw pad 1 more evenly, which can effectively avoid the problem of stress concentration and the deformation caused by it. It can more accurately control the vertical changes of the maxilla, and the orthodontic effect is more reliable. During the orthodontic process, the connection between the extraoral arch 2 and the jaw pad 1 is more stable, the service life of the jaw pad 1 is longer, and it is easier to maintain a stable orthodontic effect.

[0025] In this embodiment, the jaw pad 1 has upper and lower alveoli 12 on opposite sides. During treatment, the upper teeth bite into the upper alveoli 12, and the lower teeth bite into the lower alveoli 12. The surface of the jaw pad 1 opposite to the lip contact surface 11 is the tongue contact surface 14. The lip contact surface 11 is used to contact the lips, and the tongue contact surface 14 is used to contact the tongue inside the mouth. In addition, the jaw pad 1 is also provided with ventilation holes connecting the tongue contact surface 14 and the lip contact surface 11 to help the user breathe.

[0026] In this embodiment, the external arch 2 also includes an external arch 22 connected to the internal arch 21, with traction hooks 221 at both ends of the external arch 22. During treatment, the internal arch 21 is connected to the jaw pad 1, and the traction hooks 221 of the external arch 22 are connected to a head cap or similar device via traction components.

[0027] In this embodiment, the distance between the top surface and the bottom surface of the slot 111 gradually narrows towards the side closer to the lip contact surface 11; wherein, the distance between the top and bottom of the slot 111 on the lip contact surface 11 is 0.5 to 4 mm, so that the assembled inner arch 21 can remain more stably in the slot 111 during treatment and prevent it from falling off.

[0028] To prevent the inner arch 21 from horizontally deflecting from the jaw pad 1, the assembly structure of the slot 111 and the inner arch 21 can be configured such that the two ends of the inner arch 21 abut against the two ends of the slot 111 respectively.

[0029] In this embodiment, the cross-sectional area of ​​the outer arch 22 is preferably set to be larger than that of the inner arch 21, and the outer arch 22 includes a connecting segment 222 connected to the inner arch 21. The connecting segment 222 is preferably embedded in the slot 111. The distance between the top surface and the bottom surface of the slot 111 gradually narrows towards the side closer to the lip contact surface 11. Therefore, the slot 111 is narrowest at the opening of the lip contact surface 11, and the distance between the top and bottom of the opening of the slot 111 on the lip contact surface 11 is less than the diameter of the outer arch 22, preferably less than the diameter of the inner arch 21. The elastic force of the jaw pad 1 on the connecting segment 222 at the opening can keep the relative position of the assembled external arch 2 and the jaw pad 1 stable during treatment, thereby maintaining a stable orthodontic effect.

[0030] Combination Figure 3 , Figure 4 and Figure 5 In another embodiment, to further ensure more even force distribution on the jawbone during orthodontic treatment, an arch foot (not shown in the figure) is provided on the inner arch 21. The two ends of the slot 111 are respectively provided with slot holes 15, and the arch foot extends into the slot holes 15. Thus, the traction force of the external arch 2 acts not only on the slot 111 but also on the slot holes 15, ensuring that the jaw pad 1 is subjected to traction force along its extension direction around the alveolar ridge, resulting in a wider effective area and more even force distribution.

[0031] To facilitate the forming of the locking hole 15 and accommodate arches of different lengths, in this embodiment, it is preferable that one end of the locking hole 15 is connected to the locking groove 111, and the other end passes through the rear end face of the jaw pad 1.

[0032] Preferably, the locking hole 15 is tangent to the groove wall of the locking groove 111 on the side away from the lip contact surface 11. In this way, the groove wall of the locking groove 111 on the side away from the lip contact surface 11 provides a guiding function for the bow foot to extend into the locking hole 15, making assembly more convenient.

[0033] More preferably, the card hole 15 is tangent to the top surface of the card groove 111, that is, the card hole 15 is tangent to the groove wall of the card groove 111 near the upper tooth groove 12, which can make the inner arch 21 in complete contact with the groove wall of the card groove 111 near the upper tooth groove 12, and always ensure the uniformity of force between the inner arch 21 and the jaw pad 1.

[0034] When the slot 111 has slot holes 15 at both ends, it is preferable to provide a positioning protrusion at the top of the slot 111. The positioning protrusion is opposite to the bifurcation of the outer arch 22 and the inner arch 21, and is used to abut against the bifurcation of the outer arch 22 and the inner arch 21. The positioning protrusion can prevent the inner arch 21 from horizontally deflecting from the jaw pad 1, making the connection between the external oral arch 2 and the jaw pad 1 more stable during orthodontic treatment.

[0035] After the inner arch 21 and the jaw pad 1 are assembled, resin or other fillers can be filled into the slot 111. The filler is connected to the inner arch 21. When the filler hardens, it can prevent the inner arch 21 from moving relative to the jaw pad 1, making the connection between the external arch 2 and the jaw pad 1 more stable, and the traction force of the inner arch 21 can be applied to the jaw pad 1 more stably.

[0036] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An orthodontic device, comprising: The device includes a jaw pad and an external arch. The jaw pad has an opening at the front end of the lip contact surface, and the opening extends horizontally along the lip contact surface to form a groove. The external arch includes an inner arch, and at least a portion of the inner arch is disposed within the groove.

2. The dental appliance of claim 1, wherein, The distance between the top surface and the bottom surface of the card slot gradually narrows towards the side closer to the lip contact surface.

3. The dental appliance of claim 1, wherein, The inner bow is provided with bow feet, and the two ends of the slot are provided with corresponding locking holes, with the bow feet extending into the locking holes.

4. The dental appliance of claim 3, wherein, The card hole is tangent to the groove wall on the side of the card slot away from the lip contact surface.

5. The orthodontic appliance according to claim 3 or 4, characterized in that, The card hole is tangent to the top surface of the card slot.

6. The orthodontic device according to claim 3, characterized in that, One end of the card hole communicates with the card slot, and the other end penetrates the rear end face of the jaw pad.

7. The orthodontic device according to claim 1, characterized in that, The two ends of the inner bow abut against the two ends of the slot, respectively.

8. The orthodontic appliance as described in claim 1 or 2, characterized in that, The external bow also includes an external bow connected to the internal bow, and the external bow includes a connecting section connected to the internal bow, the connecting section being embedded in the slot.

9. The orthodontic device according to claim 1, characterized in that, The slot is filled with a filler material, which is connected to the inner bow.

10. The orthodontic device according to claim 1, characterized in that, The distance between the top and bottom of the slot on the lip contact surface is 0.5 to 4 mm.

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