Auxiliary device for anchorage pin assisted treatment of posterior teeth depression

Abstract

The utility model relates to a supporting resistance nail auxiliary correction device for the low pressure of posterior teeth, belong to the medical instrument technical field, solve the problem that relevant correction device is difficult to exert accurate direction pressure on the ill tooth. The correction device includes supporting resistance nail, is used for implanting between the patient posterior tooth root, auxiliary support is fixedly connected in the patient tooth area through the supporting resistance nail, the number of hook body is multiple, and the hook body is distributed on the buccal side and the lingual side of the ill tooth to be lowed, the pressure rope is connected to the hook body of the buccal side of the ill tooth one end, is connected to the hook body of the lingual side of the ill tooth the other end, and the pressure rope straddles the occlusal surface center position of the ill tooth and exerts the pressure of going down in the middle part of the ill tooth. The device simple structure, convenient to use, and can only exert the vertical pressure to the ill tooth to low the ill tooth, and the force direction is correct, realizes the stable and accurate low pressure to the local elongation posterior tooth, avoids the adjacent tooth to be affected, and provides the ideal space for the repair treatment.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and specifically relates to an anchorage screw-assisted orthodontic device for posterior tooth intrusion. Background Technology

[0002] Tooth loss can be caused by various factors, including dental caries, periodontal disease, trauma, jawbone disorders, and developmental disorders. These factors disrupt the original three-dimensional balance, often leading to problems such as adjacent tooth tilting, periodontal damage, and malocclusion. Passive elongation of opposing teeth is particularly common. The longer the tooth is missing, the more significant the decrease in intergingival distance, severely impacting subsequent restorations and implant retention. While minor elongation can be addressed with minimal grinding, excessive elongation and extensive removal of tooth structure can expose dentin and even pulp, harming oral health. In recent years, combining orthodontic intrusion of over-elongated opposing teeth with implant treatment has effectively increased restorative space and improved implant stability. Micro-implant anchorage screws (titanium alloy micro-screws with a diameter of approximately 1.5-2 mm) are widely used due to their stable anchorage, controllable intrusion, minimal trauma, high efficiency, and low cost.

[0003] However, simultaneously intruding multiple posterior teeth presents significant challenges for conventional orthodontic treatment. Without anchorage screws, the orthodontic force often affects adjacent teeth, leading to unnecessary movement and side effects. When anchorage screws are used, their placement is typically limited to the interdental space, making it difficult to directly apply force to the buccal and lingual sides of the teeth to be intruded. Consequently, it is challenging to apply pressure in the correct direction to the affected teeth (i.e., the posterior teeth that need intrusion). This often results in impure force direction during treatment, leading to additional forces. This not only reduces treatment efficiency but may also cause unwanted tooth movement.

[0004] Therefore, there is an urgent need for an orthodontic device that can apply pressure in the correct direction to the affected tooth. Utility Model Content

[0005] This invention provides an anchorage screw-assisted orthodontic device for posterior tooth intrusion, which solves the technical problem that current orthodontic devices are unable to apply pressure in a precise direction on the affected tooth.

[0006] This utility model is achieved through the following technical solution: an anchorage screw-assisted orthodontic device for posterior tooth intrusion, comprising: Anchorage screws are used to be implanted between the roots of a patient's posterior teeth; An auxiliary support is fixedly connected to the patient's dental area by the anchorage screw, and the auxiliary support covers the buccal and lingual sides of the affected tooth to be depressed; The hooks are fixedly connected to the auxiliary support. There are multiple hooks, and the hooks are distributed on both the buccal and lingual sides of the affected tooth to be depressed. The pressure rope has one end connected to the hook on the buccal side of the affected tooth and the other end connected to the hook on the lingual side of the affected tooth. The pressure rope crosses the center of the occlusal surface of the affected tooth and applies downward pressure to the middle of the affected tooth.

[0007] Furthermore, in order to better realize this utility model, the auxiliary bracket is closely attached to the patient's dental arch, and the auxiliary bracket is a C-shaped frame composed of a first segment, a second segment and a third segment, wherein the first segment is located on the lingual side of the affected tooth, the second segment crosses the distal surface of the patient's tooth, and the third segment is located on the buccal side of the affected tooth. Both the first segment and the third segment are connected to the patient's dental area via the anchorage screws; The hook is fixedly connected to both the first segment and the third segment.

[0008] Furthermore, in order to better realize this utility model, both the first segment and the third segment are provided with implantation holes, and each implantation hole is connected to the anchorage nail.

[0009] Furthermore, in order to better realize this utility model, the first segment is provided with two implantation holes, and the third segment is provided with one implantation hole.

[0010] Furthermore, in order to better realize this utility model, a light-cured resin is filled between the anchorage nail and the implantation hole wall of the implantation nail, and the light-cured resin covers the head of the anchorage nail.

[0011] Furthermore, in order to better realize this utility model, the hook body is fixedly connected to the auxiliary bracket by welding.

[0012] Furthermore, in order to better realize this utility model, it also includes: The tongue button is fixedly connected to both the lingual and buccal sides of the affected tooth, and the pressure rope is connected to the tongue button to position the pressure rope.

[0013] Furthermore, in order to better realize this utility model, the pressure rope is an orthodontic rubber chain, one end of the orthodontic rubber chain is hooked to the hook body on the buccal side of the affected tooth, and the other end of the orthodontic rubber chain is hooked to the hook body on the lingual side of the affected tooth.

[0014] Furthermore, in order to better realize this utility model, the tongue button is a protruding structure, and the orthodontic rubber chain is attached to the tongue button.

[0015] Furthermore, in order to better realize this utility model, the tongue button is fixed to the affected tooth by resin bonding.

[0016] Compared with the prior art, this utility model has the following advantages: The orthodontic device for posterior tooth intrusion provided by this utility model includes an anchorage screw, an auxiliary support, hooks, and a pressure rope. The anchorage screw is implanted between the roots of two intrusive teeth in the adjacent region of the patient's posterior teeth. The auxiliary support is fixedly connected to the patient's dental area by the anchorage screw. Thus, the function of the anchorage screw is to fix the auxiliary support to the patient's dental area. Multiple hooks are fixedly connected to the auxiliary support, and the hooks are distributed on both the buccal and lingual sides of the tooth to be intruded. One end of the pressure rope is connected to the hook located on the buccal side of the tooth, and the other end is connected to the hook located on the lingual side of the tooth. The pressure rope crosses the center of the occlusal surface of the tooth and applies downward pressure to the middle of the tooth.

[0017] With the above structure, since the two ends of the pressure rope are connected to hooks on the lingual and buccal sides of the affected tooth, and the hooks are fixedly connected to the auxiliary framework, which is in turn fixedly connected to the patient's dental area by anchorage screws, the pressure rope can apply downward pressure to the middle of the occlusal surface of the affected tooth. The direction of force application is unidirectional and precise. Therefore, compared with traditional methods that rely on traction between teeth, the anchorage of this device mainly comes from the anchorage screws and the auxiliary framework, thus preventing elongation of non-target teeth and effectively reducing the probability of treatment failure due to inaccurate force application direction. Compared with bulky removable appliances or auxiliary arch devices, this device is compact, aesthetically pleasing, and low in cost. The dentist only needs to implant the anchorage screw and fix the auxiliary framework once to apply continuous indentation force, without the need for complex staged operations. Moreover, the simultaneous force on the buccal and lingual sides of the affected tooth can be balanced, ensuring that the affected tooth is mainly subjected to vertical force, thereby achieving efficient indentation action. After a period of continuous pressure and traction, the overgrown posterior tooth (i.e., the affected tooth) will gradually return to the normal occlusal height.

[0018] Based on this, the anchorage screw-assisted orthodontic appliance for posterior tooth intrusion provides a safer, more efficient, and precise solution for localized posterior tooth intrusion. While improving occlusion, it minimizes side effects and risks, demonstrating significant clinical value. This appliance can achieve stable and precise intrusion of locally elongated posterior teeth, avoiding involvement of adjacent teeth and providing ideal space for restorative treatment. Especially when multiple teeth require simultaneous intrusion, hooks can be connected to multiple locations on the auxiliary framework, with different hooks positioned on the buccal and lingual sides of different teeth. This allows multiple pressure cords to be connected to the hooks at different locations, applying vertical downward pressure simultaneously to multiple teeth for orthodontic treatment. By adjusting the pressure intensity of the pressure cords, the treatment requirements of different teeth can be accommodated, thus achieving simultaneous intrusion treatment of multiple teeth. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the anchorage screw-assisted orthodontic device for posterior tooth intrusion provided in this embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the pressure rope being attached to the tongue button in an embodiment of this utility model; Figure 3 yes Figure 2 Another perspective view of the structure shown.

[0021] In the picture: 10-Anchorage screw, 20-Auxiliary support, 21-First segment, 22-Second segment, 23-Third segment, 24-Implant screw insertion hole, 30-Hook, 40-Pressure rope, 50-Tongue button, 60-Dyed tooth. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example: This embodiment provides an anchorage screw-assisted orthodontic device for posterior tooth intrusion, such as... Figures 1 to 3 As shown, it includes a support nail 10, an auxiliary support 20, a hook 30, and a pressure rope 40, wherein: The anchorage screw 10 is a titanium alloy microscrew with a diameter of approximately 1.4-1.5 mm. It is implanted between the roots of the patient's posterior teeth using existing technology. In fact, the anchorage screw 10 is implanted into the bone tissue. Therefore, the implantation process must be performed under local anesthesia. Moreover, the depth and angle of the anchorage screw 10 implantation into the bone tissue are pre-designed to optimize the direction of resistance and avoid the root structure.

[0024] The auxiliary framework 20 is fixedly connected to the patient's dental region by the aforementioned anchorage screw 10. Therefore, the function of the anchorage screw 10 is to secure the auxiliary framework 20 to the patient's dental region. Multiple hooks 30 are fixedly connected to the auxiliary framework 20, protruding from it. The hooks 30 are distributed on both the buccal and lingual sides of the affected tooth 60 to be indented, thus the auxiliary framework 20 can cover both the buccal and lingual sides of the affected tooth 60.

[0025] One end of the pressure rope 40 is connected to the hook 30 located on the buccal side of the affected tooth 60, and the other end is connected to the hook 30 located on the lingual side of the affected tooth 60. The pressure rope 40 crosses the center of the occlusal surface of the affected tooth 60 and applies downward pressure to the middle of the affected tooth 60.

[0026] With the above structure, since the two ends of the pressure rope 40 are connected to the hooks 30 on the lingual and buccal sides of the affected tooth 60, and the hooks 30 are fixedly connected to the auxiliary framework 20, which in turn is fixedly connected to the patient's dental area via the anchorage screw 10, the pressure rope 40 can apply downward pressure to the middle of the occlusal surface of the affected tooth 60. The direction of force application is singular and precise. Therefore, compared with traditional methods that rely on traction between teeth, the anchorage of this device mainly comes from the anchorage screw 10 and the auxiliary framework 20, thus preventing elongation of non-target teeth and effectively reducing the probability of treatment failure due to inaccurate force application direction during treatment. Compared with bulky removable appliances or auxiliary arch devices, this device is compact, aesthetically pleasing, and low in cost. The doctor only needs to implant the anchorage screw 10 and fix the auxiliary framework 20 once to apply continuous downward pressure, without the need for complex staged operations. That is, a single design and installation can quickly and efficiently apply force throughout the entire treatment process, greatly shortening the treatment time and improving the patient's treatment experience. Furthermore, the simultaneous application of force on the buccal and lingual sides of the affected tooth 60 ensures that the force is primarily applied in the vertical direction, thereby achieving an efficient indentation action. After a period of continuous pressure and traction, the overgrown posterior tooth (i.e., the affected tooth 60) will gradually return to its normal occlusal height.

[0027] Based on this, the anchorage screw-assisted orthodontic device for posterior tooth intrusion provides a safer, more efficient, and precise solution for localized posterior tooth intrusion. While improving occlusion, it minimizes side effects and risks, demonstrating significant clinical application value. This device enables stable and precise intrusion of locally elongated posterior teeth, avoiding involvement of adjacent teeth and providing ideal space for restorative treatment. Especially when multiple teeth 60 require simultaneous intrusion, hooks 30 can be connected to multiple locations on the auxiliary framework 20, with different hooks 30 positioned on the buccal and lingual sides of different teeth 60. Multiple pressure ropes 40 can then be connected to the hooks 30 at different locations, applying vertical downward pressure simultaneously to multiple teeth 60 for orthodontic treatment. By adjusting the pressure intensity of the pressure ropes 40, the treatment requirements of different teeth 60 can be accommodated, thus achieving simultaneous intrusion treatment of multiple teeth 60. Furthermore, the intrusion direction can be flexibly adjusted, and the minimalist design allows for three-dimensional control of the teeth.

[0028] An optional implementation of this embodiment is as follows: The aforementioned auxiliary support 20 is closely fitted to the patient's dental arch. In fact, the auxiliary support 20 is designed to conform to the shape of the patient's dental arch, i.e., it is customized. However, the overall outline of the auxiliary support 20 is C-shaped, consisting of a first segment 21, a second segment 22, and a third segment 23 forming a long strip structure. The second segment 22 is located between the first segment 21 and the third segment 23. The first segment 21 is located on the lingual side of the affected tooth 60, the second segment 22 spans the distal surface of the patient's tooth, and the third segment 23 is located on the buccal side of the affected tooth 60. In this way, the auxiliary support 20 has a compact structure that fits closely to the dental arch. When used, it does not interfere with tongue position and chewing function, reduces the foreign body sensation experienced by the patient, increases compliance, and also helps to bear and distribute the force required to depress the posterior teeth.

[0029] Both the first segment 21 and the third segment 23 are connected to the patient's dental region via anchorage screws 10. Specifically, both the first segment 21 and the third segment 23 have implant insertion holes 24, and each implant insertion hole 24 is fitted with an anchorage screw 10. In fact, the first segment 21, located on the lingual side of the affected tooth 60, has two implant insertion holes 24, and the third segment 23, located on the buccal side of the affected tooth 60, has one implant insertion hole 24. Thus, the first segment 21 of the auxiliary framework 20 is connected to the patient's dental region via two anchorage screws 10, and the third segment 23 is connected to the patient's dental region via one anchorage screw 10. It is worth noting that the implant insertion hole 24 is actually a through hole through which the top rod of the anchorage screw 10 can pass, and the area on the auxiliary framework 20 with the implant insertion hole 24 is wider. In addition, one implantation hole 24 on the first segment 21 is located at the end of the first segment 21 away from the second segment 22, and the other implantation hole 24 is located between the aforementioned implantation hole 24 and the second segment 22; the implantation hole 24 on the third segment 23 is located at the end of the third segment 23 away from the second segment 22. Of course, the spaces for the three implantation holes 24 are precisely designed and positioned based on the patient's oral anatomy and CBCT images. Typically, they are selected between the roots of two adjacent teeth in the target posterior tooth (i.e., the affected tooth 60). The three implantation holes 24 are usually distributed in different locations in the posterior tooth region, such as one on the buccal side, one on the lingual side, and one on the mesial or distal side, thus forming a stable "three-point, one-surface" anchorage structure. This not only improves anti-rotation and anti-movement capabilities but also disperses the load force, preventing a single anchorage screw 10 from being subjected to excessive stress and loosening. The auxiliary bracket 20 is designed distal to the dentition to eliminate the adverse effects of the orthodontic device on the dentition. Therefore, the device will not affect the patient's original occlusion during treatment.

[0030] Of course, more implant placement holes 24 can be provided on the above-mentioned auxiliary framework 20, that is, more anchorage screws 10 can be used to connect the above-mentioned auxiliary framework 20 to the patient's dental area. However, implant placement holes 24 must be distributed on both the buccal and lingual sides of the affected tooth 60.

[0031] More preferably, a light-cured resin is filled between the anchorage screw 10 and the implantation hole 24, and the light-cured resin covers the head of the anchorage screw 10. Through the above structure, the device provides safe and precisely controllable anchorage by combining the support with multiple anchorage screws 10. Multi-point fixation avoids the risk of loosening of a single anchorage screw 10. The light-cured resin fixation further improves the overall stability, makes the pressure force reliably transmitted, and the light-cured resin can cover the head of the anchorage screw 10 (that is, the section of the anchorage screw 10 exposed outside the support), thereby avoiding the head of the anchorage screw 10 from affecting the movement of the tongue. It can also make the head of the anchorage screw 10 smoother and reduce the patient's discomfort.

[0032] In this embodiment, hooks 30 are fixedly connected to both the first segment 21 and the third segment 23. Specifically, the hooks 30 are fixed to the first segment 21 and the third segment 23 by welding. In fact, the hooks 30 on the first segment 21 are located on the lingual side of the affected tooth 60 (i.e., the center of the lingual side of the affected tooth 60), and the hooks 30 on the second segment 22 are located on the buccal side of the affected tooth 60 (i.e., the center of the buccal side of the affected tooth 60). These hooks 30 serve as the fixing points for applying force when indenting the tooth. They are metal hook structures protruding outward from the auxiliary support 20. Their position and number can be designed according to clinical biomechanical requirements to apply balanced traction force from both the buccal and lingual sides of the affected tooth 60, ensuring that the direction of force applied to the tooth to be indented is correct (i.e., the direction of force is vertically downward) and the force distribution is balanced, without causing side effects such as tilting or deviation.

[0033] An optional implementation of this embodiment is as follows: The anchorage screw-assisted orthodontic device for posterior tooth intrusion provided in this embodiment further includes a lingual button 50, which is a structural component made of metal (e.g., pure titanium or stainless steel). The lingual button 50 is fixedly connected to both the lingual and buccal sides of the affected tooth 60. Specifically, the lingual button 50 is fixedly attached to the middle of both the lingual and buccal sides of the affected tooth 60 by resin bonding. The pressure rope 40 is connected to the lingual button 50 to position the pressure rope 40, preventing it from shifting or flipping during use and improving the stability of the device.

[0034] Optionally, in this embodiment, the lingual button 50 is a protruding structure, and the pressure rope 40 is an orthodontic rubber chain. It should be noted that the orthodontic rubber chain is an elastic band structure made of rubber and similar to a chain, which is existing technology and will not be described in detail here. In this embodiment, one end of the orthodontic rubber chain is hooked to the hook 30 located on the buccal side of the affected tooth 60, and the other end of the orthodontic rubber chain is hooked to the hook 30 located on the lingual side of the affected tooth 60. Moreover, the orthodontic rubber chain is also attached to the lingual button 50 located on both the buccal and lingual sides of the affected tooth 60. In this way, by means of the elasticity of the orthodontic rubber chain, after the orthodontic rubber chain is connected to the hook 30 and the lingual button 50 on both sides of the affected tooth 60, it is in a stretched state, thereby applying a downward force to the affected tooth 60. Furthermore, it should be noted that since the orthodontic elastic chain is attached to the lingual button 50 on both the buccal and lingual sides of the affected tooth 60, and the lingual button 50 is fixed to the affected tooth 60 by resin bonding, this further facilitates the application of vertical corrective force on the affected tooth 60. It can be understood that part of the vertical pressure is transmitted to the affected tooth 60 through the lingual button 50. Therefore, the orthodontic elastic chain provided in this embodiment not only applies partial vertical pressure by pressing on the occlusal surface of the affected tooth 60, but also applies partial vertical pressure through the lingual button 50. Thus, since the traction force is supported by the hooks 30 on both sides of the auxiliary bracket 20, and part of the force is evenly transmitted to the affected tooth 60 through the lingual button 50, no tilting or flipping torque is generated on the affected tooth 60. During use, the stretched orthodontic elastic chain generates a retraction force, that is, a continuous vertical traction force is applied downwards on both the buccal and lingual sides and the occlusal surface of the affected tooth 60, pressing the affected tooth 60 down into the alveolar bone. The pressure applied by the pressure rope 40 can be adjusted by selecting orthodontic rubber chains of different lengths or elasticities.

[0035] In use, firstly, a customized auxiliary bracket 20 is installed in the patient's dental area according to the design, and the aforementioned lingual button 50 is glued and fixed to the affected tooth 60. Then, one end of the orthodontic elastic chain is hooked onto the hook 30 on the lingual side of the affected tooth 60, followed by draping the elastic chain over the lingual button 50 on the lingual side of the affected tooth 60, allowing the elastic chain to cross the occlusal surface of the affected tooth 60. Next, the elastic chain is bent downwards and draped over the lingual button 50 on the buccal side of the affected tooth 60. Finally, the other end of the elastic chain is hooked onto the hook 30 on the buccal side of the affected tooth 60. The operation is simple and convenient. Alternatively, the orthodontic elastic chain can be connected to the buccal side of the affected tooth 60 first, and then to the lingual side. After connection, the orthodontic elastic chain forms an inverted U-shaped or triangular component spanning the occlusal surface of the affected tooth 60.

[0036] It should be noted that, in this embodiment, "customized" refers to the fact that the shape and size of the auxiliary framework 20, as well as the position of the anchorage screws 10 on the auxiliary framework 20, need to be designed and determined according to the specific condition of the patient's teeth. Customized design ensures adaptability to the anatomical differences of different patients, resulting in greater comfort and better compliance when using the anchorage screw-assisted orthodontic device for posterior tooth intrusion provided in this embodiment. Additionally, the orthodontic elastic chain mentioned above needs to be replaced monthly.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A device for assisting the treatment of a posterior tooth with anchorage pins, characterized in that, include: Anchorage screw (10) is used to be implanted between the roots of the patient's posterior teeth; An auxiliary support (20) is fixedly connected to the patient's dental area by the anchorage screw (10), and the auxiliary support (20) covers the buccal and lingual sides of the affected tooth (60) to be depressed; Hooks (30) are fixedly connected to the auxiliary support (20). There are multiple hooks (30), and the hooks (30) are distributed on both the buccal and lingual sides of the affected tooth (60). The pressure rope (40) has one end connected to the hook (30) on the buccal side of the affected tooth (60) and the other end connected to the hook (30) on the lingual side of the affected tooth (60). The pressure rope (40) crosses the center of the occlusal surface of the affected tooth (60) and applies downward pressure to the middle of the affected tooth (60).

2. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 1, characterized in that: The auxiliary support (20) is close to the patient's dental arch, and the auxiliary support (20) is a C-shaped frame composed of a first segment (21), a second segment (22) and a third segment (23), wherein the first segment (21) is located on the lingual side of the affected tooth (60), the second segment (22) spans the distal surface of the patient's tooth, and the third segment (23) is located on the buccal side of the affected tooth (60); The first segment (21) and the third segment (23) are both connected to the patient's dental area via the anchorage screw (10); The hook body (30) is fixedly connected to both the first segment (21) and the third segment (23).

3. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 2, characterized in that: Both the first segment (21) and the third segment (23) are provided with implantation holes (24), and each implantation hole (24) is connected to the anchorage nail (10).

4. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 3, characterized in that: The first segment (21) has two implantation holes (24), and the third segment (23) has one implantation hole (24).

5. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 3, characterized in that: A light-cured resin is filled between the anchorage nail (10) and the wall of the implantation hole (24), and the light-cured resin covers the head of the anchorage nail (10).

6. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 2, characterized in that: The hook (30) is fixedly connected to the auxiliary bracket (20) by welding.

7. The auxiliary treatment device for anchorage pin of posterior teeth depression according to any one of claims 1-6, characterized in that, Also includes: A tongue button (50) is fixedly connected to both the lingual and buccal sides of the affected tooth (60). The pressure rope (40) is connected to the tongue button (50) to position the pressure rope (40).

8. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 7, characterized in that: The pressure rope (40) is an orthodontic rubber chain. One end of the orthodontic rubber chain is hooked to the hook (30) on the buccal side of the affected tooth (60), and the other end of the orthodontic rubber chain is hooked to the hook (30) on the lingual side of the affected tooth (60).

9. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 8, characterized in that: The tongue button (50) is a protruding structure, and the orthodontic rubber chain is attached to the tongue button (50).

10. The anchorage screw-assisted orthodontic device for posterior tooth intrusion according to claim 7, characterized in that: The tongue button (50) is fixed to the affected tooth (60) by resin bonding.

Images