Dental appliance

Abstract

The utility model provides a tooth appliance. The tooth appliance is used for pushing molar to move far and comprises an anterior tooth area, teeth contained in the anterior tooth area comprise target teeth, and the anterior tooth area is provided with a force transfer structure. The force transfer structure acts on the oral cavity tissue of the anterior tooth area or the target tooth to reduce the stress of the target tooth. The force transfer structure can reduce the stress of the target tooth by acting on the oral cavity tissue of the anterior tooth area or the target tooth, so that the situation that the supporting resistance of the tooth correction device on the target tooth directly acts on the target tooth to cause outward movement of the target tooth when the push molar moves far can be prevented, and the correction effect can be optimized.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, more specifically to the field of orthodontics, and particularly to a dental appliance. Background Technology

[0002] In the field of orthodontics, molar distalization is a relatively common orthodontic method. Figure 1 This is a commonly used orthodontic appliance 20 for molar distalization. It is a clear aligner appliance and includes an anterior region 30 and a molar region 40. The anterior region 30 contains a target tooth 10. When the patient wears the appliance 20, the target tooth 10 fits or has a gap fit with the inner wall surface of the corresponding anterior region 30. Figure 2 As shown, when using orthodontic appliances (such as clear aligners) to move molars distally, the appliances exert anchorage forces on the anterior teeth. These anchorage forces can easily cause the anterior teeth to move labially, intrusively, or mesially. The presence of these labial and mesially tilting movements can negatively impact the orthodontic outcome, leading to suboptimal results. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned defects in the existing technology, which are due to the presence of labial inclination and mesial tilting of the anterior teeth, resulting in poor orthodontic effect, and to provide a dental appliance.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A dental appliance for distalizing molars includes an anterior region, wherein the teeth housed within the anterior region include target teeth, and the anterior region is provided with a force transfer structure.

[0006] The force transfer structure acts on the oral tissues in the anterior tooth region or the target tooth to reduce the force on the target tooth.

[0007] In this approach, the force transfer structure can reduce the force on the target tooth by acting on the oral tissues in the anterior region or the target tooth. This prevents the orthodontic appliance from directly acting on the target tooth during molar distalization, thus avoiding the target tooth from shifting outward and optimizing the treatment outcome.

[0008] Preferably, when the force transfer structure is used to act on the target tooth, the force transfer structure includes a first buffer cavity;

[0009] The inner wall surface of the anterior tooth region opposite to the lingual side of the target tooth is the first inner wall, and the lingual side of the target tooth is spaced apart from the first inner wall to form the first buffer cavity.

[0010] In this design, the aforementioned structural configuration, under the action of the first buffer cavity, prevents the orthodontic appliance's support force from directly acting on the target tooth and causing it to move outward when the molar moves distally. The reduction of force on the target tooth is achieved by setting up the first buffer cavity, resulting in a simple structure that simplifies the overall structure of the orthodontic appliance.

[0011] Preferably, the inner wall surface of the anterior tooth region opposite to the labial side of the target tooth is the second inner wall, the labial side of the target tooth is in contact with the second inner wall, and the gap between the lingual side of the target tooth and the first inner wall is 0.5 to 3 mm.

[0012] In this solution, the above-mentioned structural configuration is adopted, and the size of the first buffer cavity is set within a preset range. This not only enables the first buffer cavity to effectively reduce the support force from the orthodontic appliance on the target tooth, but also prevents the target tooth from not being reliably matched with the orthodontic appliance due to the size of the first buffer cavity being too large, thus making it easy for the appliance to fall off.

[0013] Preferably, the outer wall surface of the anterior tooth region corresponding to the labial side of the target tooth is the first outer wall, and when the force transfer structure is used to act on the oral tissue, the oral tissue is the labial tissue opposite to the first outer wall;

[0014] The force transfer structure includes a resistance element that protrudes from the first outer wall toward the lip tissue.

[0015] In this solution, the above-mentioned structural setup is adopted. When the molar moves distally, the orthodontic appliance will exert an anchoring force on the target tooth. However, since there is a resisting element on the labial side of the anterior tooth area, the resisting element can hold against the corresponding labial tissue. Therefore, the labial tissue will generate a force towards the lingual side to counteract the anchoring force, thereby preventing the target tooth from moving outward.

[0016] Preferably, the resisting element is integrally formed with the first outer wall, and the resisting element is an accessory cavity for accommodating accessories; or, the resisting element is an cavitation structure integrally formed with the first outer wall; or, the resisting element is bonded to the first outer wall.

[0017] And / or,

[0018] The side of the resistance element facing the lip tissue has a flat structure.

[0019] In this design, the resist element can be integrally molded or bonded to the first lateral wall of the anterior region. Integrating the resist element integrally with the first lateral wall simplifies the structure of the orthodontic appliance and optimizes the user experience. Bonding the resist element to the first lateral wall allows for fine-tuning of its position and replacement as needed, offering flexibility. When integrally molded, the resist element can be configured as an attachment cavity or a cavitation structure, providing further flexibility. The attachment cavity can accommodate attachments, which provide additional support and other auxiliary functions to the target teeth in the anterior region, further improving the orthodontic effect.

[0020] In addition, making the side of the resisting element facing the lip tissue flat helps to increase the contact area between the resisting element and the lip tissue, and also helps to prevent damage to the lip tissue due to the setting of the resisting element, thereby further optimizing the user experience.

[0021] Preferably, when the force transfer structure is used to act on oral tissue, the oral tissue is gingival tissue;

[0022] The force transfer structure includes an extension that extends from the bottom of the lingual side of the anterior tooth region toward the gingival tissue and is used to cover the gingival tissue.

[0023] In this scheme, the above-mentioned structural setup provides support for the gingival tissue. When the molars move distally, the resistance force generated by the orthodontic appliance on the target tooth will act on the target tooth. However, since the lingual extension of the anterior region wraps around the gingival tissue, the gingival tissue will resist this force, greatly reducing the force on the target tooth and thus preventing the target tooth from moving outward.

[0024] Preferably, the inner wall surface of the anterior tooth region opposite to the labial side of the target tooth is a second inner wall, the second inner wall is spaced apart from the labial side of the target tooth, and the target tooth is configured to have a design amount of movement toward the mesial direction.

[0025] In this scheme, the above-mentioned structural setup is adopted, and the target tooth is configured to have a design amount of movement in the mesial direction, which is equivalent to a pre-deformation amount in the anterior tooth area. The deformation direction of this pre-deformation amount is opposite to the direction of the support force generated by the appliance on the target tooth when the molar is distalized. Combined with the support provided by the gingival tissue, it is beneficial to further reduce the force on the target tooth, and thus further help to avoid the target tooth from moving outward.

[0026] Preferably, the extension is integrally formed with the anterior tooth region.

[0027] In this solution, the above-mentioned structural design simplifies the molding process of the orthodontic appliance, which helps to optimize the user experience.

[0028] Preferably, the extension is adapted to the shape of the gingival tissue.

[0029] In this design, the aforementioned structural configuration facilitates better coordination between the extension and the gingival tissue, allowing the gingival tissue to provide better support and more effectively prevent the target tooth from shifting outwards. Furthermore, designing the extension to conform to the shape of the gingival tissue optimizes the user experience, preventing noticeable foreign body sensations or pain during the wearing of the orthodontic appliance.

[0030] Preferably, the force transfer structure further includes a second buffer cavity, wherein the inner wall surface of the anterior tooth region opposite to the lingual side of the target tooth is a first inner wall, and the lingual side of the target tooth is spaced apart from the first inner wall to form the second buffer cavity.

[0031] In this solution, the above-mentioned structure is adopted, and a second buffer cavity is set on the basis of the aforementioned structure. The second buffer cavity can further reduce the support force of the orthodontic appliance on the target tooth, thereby further preventing the target tooth from moving outward.

[0032] The positive and progressive effects of this utility model are as follows:

[0033] In this orthodontic appliance, the force transfer structure can reduce the force on the target tooth by acting on the oral tissues in the anterior region or the target tooth. This can prevent the resistance force of the orthodontic appliance on the target tooth from directly acting on the target tooth and causing the target tooth to move outward when the molar is distalized, thus helping to optimize the orthodontic effect. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a dental appliance in the prior art.

[0035] Figure 2 This is a schematic diagram of the structure of a conventional orthodontic appliance when it is used in conjunction with the target tooth.

[0036] Figure 3 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 1 of this utility model.

[0037] Figure 4 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 1 of this utility model when it is used in conjunction with the target tooth.

[0038] Figure 5 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 2 of this utility model.

[0039] Figure 6 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 2 of this utility model when it is used in conjunction with the target tooth.

[0040] Figure 7 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 3 of this utility model.

[0041] Figure 8 This is a schematic diagram of the structure of the orthodontic appliance in Embodiment 3 of this utility model when it is used in conjunction with the target tooth.

[0042] Explanation of reference numerals in the attached figures:

[0043] 10 target teeth

[0044] 20 Orthodontic Appliances

[0045] 30 Anterior tooth region

[0046] 301 First Inner Wall

[0047] 302 Second Inner Wall

[0048] 303 First Outer Wall

[0049] 40 molar area

[0050] 50 First Buffer Chamber

[0051] 60 Second Buffer Chamber

[0052] 70 resistance elements

[0053] 80 extension

[0054] 90 gum tissue Detailed Implementation

[0055] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0056] Example 1

[0057] like Figure 3 and Figure 4 As shown, this embodiment provides a dental appliance 20 for distalizing molars and includes an anterior region 30. The anterior region 30 contains a target tooth 10, and the anterior region 30 is provided with a force transfer structure. The force transfer structure acts on the oral tissues of the anterior region or the target tooth to reduce the force on the target tooth 10.

[0058] In this embodiment, the force transfer structure can reduce the force on the target tooth 10 by acting on the oral tissues or target tooth in the anterior region. This can prevent the support force of the orthodontic appliance on the target tooth (corresponding to the reaction force of the molar on the orthodontic appliance 20) from directly acting on the target tooth and causing the anterior tooth to move outward when the molar is moved distally, thereby helping to optimize the orthodontic effect.

[0059] Specifically, such as Figure 4 As shown, the force transfer structure acts on the target tooth 10. The force transfer structure includes a first buffer cavity 50. The inner wall surface of the anterior tooth region 30, opposite to the lingual side of the target tooth 10, is the first inner wall. The lingual side of the target tooth and the first inner wall are spaced apart to form the first buffer cavity 50. Correspondingly, when the molar 100 moves distally, the first buffer cavity 50 prevents the orthodontic appliance's anchorage force from directly acting on the target tooth 10, effectively transferring the anchorage force on the target tooth 10. This significantly reduces the anchorage force on the target tooth 10, thereby preventing or effectively reducing the risk of the target tooth 10 moving outwards. The reduction of force on the target tooth 10 is achieved by setting the first buffer cavity 50, resulting in a simple structure that simplifies the overall structure of the orthodontic appliance.

[0060] The size and shape of the first buffer cavity 50 are not specifically limited here and can be set according to actual needs. The width of the first buffer cavity 50 is preferably variable from the tip of the target tooth 10 to the end of the target tooth 10 near the gingival tissue. For example... Figure 4 As shown, from the tip of the target tooth 10 to the end of the target tooth 10 near the gingival tissue, the size of the target tooth 10 gradually increases, while the width of the first buffer cavity 50 gradually decreases.

[0061] It should be noted that, Figure 4 The image only shows one target tooth 10 and a portion of the corresponding anterior tooth region 30. In reality, the above settings can be applied to multiple target teeth 10 in the anterior tooth region 30.

[0062] As a preferred configuration, the inner wall surface of the anterior tooth region 30 opposite to the labial side of the target tooth 10 is the second inner wall 302, the labial side of the target tooth 10 fits against the second inner wall 302, and the gap between the lingual side of the target tooth 10 and the first inner wall 301 is 2mm. Figure 4The diagram schematically illustrates the relative positions of the target tooth 10 and the orthodontic appliance 20. To illustrate the relative position between the target tooth 10 and the anterior region 30 of the appliance 20, a gap is shown between the labial side of the target tooth 10 and the second inner wall 302 of the corresponding anterior region 30. In practice, however, they are fitted together. In other alternative embodiments, the labial side of the target tooth 10 and the second inner wall 302 of the corresponding anterior region 30 may be configured with a small gap for clearance fitting or spacing.

[0063] In other alternative embodiments, the gap between the lingual side of the target tooth 10 and the second inner wall 302 of the corresponding anterior tooth region 30 can be set to any other value between 0.5 and 3 mm. Setting the gap within this range allows the first buffer cavity 50 to effectively reduce the support force from the orthodontic appliance 20 on the target tooth 10, while also preventing the target tooth 10 from unreliably fitting with the orthodontic appliance 20 due to an excessively large size of the first buffer cavity 50, thus preventing easy dislodgement.

[0064] Example 2

[0065] like Figure 5 and Figure 6 As shown, the main difference between the structure of the orthodontic appliance 20 provided in this embodiment and that in the aforementioned embodiment 1 lies in the structure of the force transfer structure. In this embodiment, the force transfer structure is configured to transfer the anchoring force received by the target tooth 10 in a resistive manner. The force transfer structure is used to apply a resistive force from the labial side of the anterior tooth region 30 toward the lingual side of the anterior tooth region 30.

[0066] Specifically, in this embodiment, the outer wall surface of the anterior tooth region 30 corresponding to the labial side of the target tooth 10 is the first outer wall 303. When the force transfer structure acts on the oral tissue, the oral tissue is the labial tissue opposite to the first outer wall 303. The force transfer structure includes a resistance element 70, which protrudes from the first outer wall 303 toward the labial tissue.

[0067] When the molars move distally, the orthodontic appliance 20 generates a restraining force on the target tooth 10. However, since the labial side of the anterior tooth region 30 is provided with a resisting element 70, the resisting element 70 can hold against the corresponding labial tissue. Therefore, the labial tissue will generate a force towards the lingual side to counteract the restraining force, thereby preventing the target tooth 10 from moving outward.

[0068] In this embodiment, the resisting element 70 is integrally formed with the first outer wall 303 of the anterior tooth region 30. This integral forming of the resisting element 70 with the first outer wall 303 of the anterior tooth region 30 simplifies the structure of the orthodontic appliance 20 and optimizes the user experience.

[0069] In other alternative embodiments, the resisting element 70 can be bonded to the first outer wall 303 of the anterior tooth region 30. By bonding the resisting element 70 to the first outer wall 303 of the anterior tooth region 30, the position of the resisting element 70 can be finely adjusted as needed, and it can also be replaced as required, offering flexibility in use.

[0070] It should be noted that, as Figure 5 As shown, resistance elements 70 are correspondingly provided on multiple target teeth 10 in the anterior tooth region 30. In this embodiment, the multiple resistance elements 70 are spaced apart.

[0071] In other alternative embodiments, the resistance elements 70 on the multiple target teeth 10 may also be configured as a single integral structure.

[0072] Optionally or alternatively, the side of the resisting element 70 facing away from the lingual side of the anterior tooth region 30 (which also corresponds to the side facing away from the first outer wall 303 of the anterior tooth region 30) is a flat structure. Making the side of the resisting element 70 facing away from the anterior tooth region 30 a flat structure increases the contact area between the resisting element 70 and the lip tissue, and also helps prevent damage to the lip tissue caused by the placement of the resisting element 70, thereby further optimizing the user experience.

[0073] Furthermore, such as Figure 5 and Figure 6 As shown, in this embodiment, the resisting element 70 is a cavitation structure integrally formed with the first outer wall 303. This design helps to reduce the weight of the orthodontic appliance 20 and achieve a lightweight design.

[0074] In other alternative embodiments, the resisting element 70 can also be configured as an attachment cavity, which is used to accommodate or is capable of accommodating an attachment. This attachment provides additional support and other assistance to the target tooth 10 within the anterior region 30, thereby further improving the orthodontic effect. The attachment itself is a structure independent of the orthodontic appliance 20; it is typically used in conjunction with the appliance during orthodontic treatment to achieve optimal results. The specific structure and usage of the attachment are well-known in the art and will not be described further here.

[0075] Example 3

[0076] like Figure 7 and Figure 8As shown, the main difference between the structure of the orthodontic appliance 20 provided in this embodiment and that of the aforementioned embodiments 1 and 2 lies in the structure of the force transfer structure. In this embodiment, the force transfer structure also acts on the oral tissue, but unlike embodiment 2, the force transfer structure in this embodiment acts on the gingival tissue.

[0077] Specifically, the force transfer structure includes an extension 80 that extends from the bottom of the lingual side of the anterior tooth region 30 toward the gingival tissue 90 and is used to cover the gingival tissue 90.

[0078] With this configuration, the gingival tissue 90 can provide support. When the molars move distally, the resistance force generated by the orthodontic appliance 20 on the target tooth 10 will act on the target tooth 10. However, since the lingual extension 80 of the anterior tooth region 30 wraps around the gingival tissue 90, the gingival tissue 90 will resist this force, which greatly reduces the force on the target tooth 10 and thus prevents the target tooth 10 from moving outward.

[0079] Furthermore, the inner wall surface of the anterior tooth region 30 opposite to the labial side of the target tooth 10 is a second inner wall 302, the second inner wall 302 is spaced apart from the labial side of the target tooth 10, and the target tooth 10 is configured to have a design amount of movement toward the mesial direction.

[0080] With this configuration, the target tooth 10 is designed to move in the mesial direction, which is equivalent to a pre-deformation amount in the anterior tooth region 30. The deformation direction of this pre-deformation amount is opposite to the direction of the support force generated by the appliance on the target tooth 10 when the molar is distalized. Combined with the support provided by the gingival tissue 90, it is beneficial to further reduce the force on the target tooth 10, and thus to further prevent the target tooth 10 from moving outward.

[0081] Figure 8 The relative positions of the target tooth 10 and the anterior tooth region 30, as well as the relative positions of the extension 80 and the gingival tissue 90, are shown.

[0082] To provide better support and achieve optimal orthodontic results, the extension 80 is designed to conform to the shape of the gingival tissue 90. This design facilitates better cooperation between the extension 80 and the gingival tissue 90, allowing the gingival tissue 90 to provide better support and more effectively prevent the target tooth 10 from shifting outward. Furthermore, adapting the extension 80 to the shape of the gingival tissue 90 also optimizes the user experience, preventing noticeable foreign body sensation or pain during the wearing of the orthodontic appliance 20.

[0083] Furthermore, as a preferred configuration, in this embodiment, the extension 80 is integrally formed with the anterior tooth region 30. This configuration simplifies the forming process of the orthodontic appliance 20 and optimizes the user experience.

[0084] Furthermore, such as Figure 8 As shown, the force transfer structure also includes a second buffer cavity 60. The inner wall surface of the anterior tooth region 30 opposite to the lingual side of the target tooth 10 is a first inner wall 301. The lingual side of the target tooth 10 and the first inner wall 301 are spaced apart to form the second buffer cavity 60. Similar to the first buffer cavity 50 in Embodiment 1, the gap between the lingual side of the target tooth 10 and the first inner wall 301 can preferably be set between 0.5 and 3 mm.

[0085] The second buffer cavity 60, the design amount of the target tooth 10, and the extension 80 are combined. Based on the above, the resistance of the gingival tissue, the buffering of the second buffer cavity 60, and the pre-deformation amount of the orthodontic appliance work together to resist or transfer the anchorage force. Based on the above, the second buffer cavity 60 can further reduce the anchorage force generated by the orthodontic appliance on the target tooth 10, thereby further preventing the target tooth 10 from moving outward.

[0086] The length of the extension 80 is not specifically limited here and can be set according to actual needs without affecting the patient's experience and safety.

[0087] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. An orthodontic appliance for distalizing molars, comprising an anterior tooth region, the teeth contained within the anterior tooth region including a target tooth, wherein, The anterior tooth area is provided with a force transfer structure; The force transfer structure acts on the oral tissue of the anterior tooth area or the target tooth to reduce the stress of the target tooth.

2. The dental appliance of claim 1, wherein, The force transfer structure comprises a first buffer cavity when acting on the target tooth. The inner wall surface of the anterior tooth area opposite to the lingual side of the target tooth is a first inner wall, and the lingual side of the target tooth is spaced apart from the first inner wall to form the first buffer cavity.

3. The dental appliance of claim 2, wherein, The inner wall surface of the anterior tooth area opposite to the labial side of the target tooth is a second inner wall, and the labial side of the target tooth is in contact with the second inner wall, and the gap between the lingual side of the target tooth and the first inner wall ranges from 0.5 to 3 mm.

4. The dental appliance of claim 1, wherein, The outer wall surface of the anterior tooth area corresponding to the labial side of the target tooth is a first outer wall, and the oral tissue is the labial tissue opposite to the first outer wall when the force transfer structure acts on the oral tissue. The force transfer structure comprises a resistance element that protrudes from the first outer wall towards the labial tissue.

5. The dental appliance of claim 4, wherein, The resistance element is integrally formed with the first outer wall, and the resistance element is an accessory cavity for accommodating an accessory; or, the resistance element is a void structure integrally formed with the first outer wall; or, the resistance element is adhesively connected with the first outer wall. And / or, The side of the resistance element facing the labial tissue is a flat structure.

6. The dental appliance of claim 1, wherein, The force transfer structure acts on the gingival tissue when acting on the oral tissue; The force transfer structure comprises an extension part that extends from the bottom of the lingual side of the anterior tooth area towards the gingival tissue and is used to cover the gingival tissue.

7. The dental appliance of claim 6, wherein, The inner wall surface of the anterior tooth area opposite to the labial side of the target tooth is a second inner wall, and the second inner wall is spaced apart from the labial side of the target tooth, and the target tooth is configured to have a design amount of movement towards the mesial direction.

8. The dental appliance of claim 6, wherein, The extension part is integrally formed with the anterior tooth area.

9. The dental appliance of claim 6, wherein, The extension part is used to adapt to the shape of the gingival tissue.

10. The dental appliance of any one of claims 6-9, wherein, The force transfer structure further comprises a second buffer cavity, and the inner wall surface of the anterior tooth area opposite to the lingual side of the target tooth is a first inner wall, and the lingual side of the target tooth is spaced apart from the first inner wall to form the second buffer cavity.

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