Molar distalizing device

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a kind of molar distal movement device, including a pair of fixedly connected mounting ring and limit nail, the limit nail is detachably arranged in the inner side wall of the tooth of patient to be corrected, the center of the mounting ring is provided with mounting hole, the outside of each mounting ring is fixedly connected with first bracing arm and second bracing arm, the segment of first bracing arm and second bracing arm away from mounting ring is fixedly connected with bonding part, the side wall of bonding part is provided with injection hole, the edge of bonding part is provided with several protrusions, the bonding part outside of second bracing arm is fixedly connected with hanging ring.The utility model has the beneficial effects that, by being provided with mounting ring, first bracing arm and second bracing arm, it can provide support for molar distal movement when pushing molar distal movement, so as to realize the orderly and controllable movement of multiple molars to distal, effectively improve the correction effect, and the structure is simple, easy to operate, can avoid the damage to the oral cavity of patient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a device for distalizing molars. Background Technology

[0002] Molar distalization, or orthodontic treatment, involves moving the molars sequentially distally (towards the throat). It's an effective method for creating space and resolving crowding or protrusion in orthodontic treatment. The core principle is to utilize the space behind the molars, applying continuous, gentle orthodontic force to move them, creating space for the alignment or retraction of the anterior teeth, thus avoiding or reducing the need for extractions. Molar distalization is particularly suitable for patients with mild to moderate crowding, low-angle facial profiles (rounded mandibular angles), and Class II dental malocclusion. By correcting tooth position through molar distalization, crowding can be resolved, occlusion can be adjusted, and chewing function improved.

[0003] However, most existing treatments involve moving molars distally using buccal anchorage screws. This requires patients to attach the rubber bands themselves, which demands high patient compliance, is complex, and makes it difficult to guarantee the corrective effect. Furthermore, in some patients, the alveolar bone in the premolar and canine areas protrudes, and the rubber bands can easily compress the buccal mucosa, leading to mucosal rupture and bleeding, causing damage to the patient. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing molar distalization devices being complex in structure, inconvenient to operate, and prone to causing injury to patients.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A molar distalization device includes a pair of fixedly connected mounting rings and limiting screws. The limiting screws are detachably mounted on the inner wall of the tooth to be corrected. The mounting rings have a mounting hole at their center. Each mounting ring has a first anchor arm and a second anchor arm fixedly connected to its outer side. The first and second anchor arms are fixedly connected to an adhesive portion at their ends away from the mounting rings. The adhesive portion has an injection hole on its side wall and several protrusions along its edge. A hanging ring is fixedly connected to the outer side of the adhesive portion of the second anchor arm. An elastic cord connects adjacent limiting screws and hanging rings.

[0007] Furthermore, the mounting hole is detachably provided with a support pin.

[0008] Furthermore, the outer wall of the anchoring nail is provided with several external threads.

[0009] Furthermore, a limit ring is fixedly connected to the end of the support pin away from the external thread.

[0010] Furthermore, the side wall of the limiting ring is provided with a through hole.

[0011] Furthermore, the end of the support pin with external threads is tapered.

[0012] Furthermore, the diameter of the limiting ring is larger than the diameter of the mounting hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The present invention provides a molar distalization device, which, by setting an mounting ring, a first anchor arm and a second anchor arm, can provide support for the molars to move away during distalization, thereby realizing the orderly and controllable distalization of multiple molars, effectively improving the orthodontic effect. Moreover, the structure is simple, the operation is convenient, and it can avoid damage to the patient's oral cavity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a molar distalization device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the support nail structure of a tooth distalization device according to the present invention.

[0017] Figure 3 This is a schematic diagram of the first premolar orthodontic structure of a molar distalization device according to the present invention.

[0018] Figure 4 This is a schematic diagram of the second premolar orthodontic structure of a molar distalization device according to the present invention.

[0019] Figure 5 This is a schematic diagram of a molar distalization device for posterior molar orthodontic correction according to the present invention.

[0020] In the diagram: 1. Mounting ring; 2. Mounting hole; 3. First support arm; 4. Adhesive part; 5. Second support arm; 6. Injection hole; 7. Support pin; 8. External thread; 9. Limiting ring; 10. Through hole; 11. Limiting pin; 12. Elastic rope; 13. Hanging ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5The molar distalization device of this embodiment includes a pair of fixedly connected mounting rings 1 and a limiting screw 11. The limiting screw 11 is detachably disposed on the inner wall of the patient's tooth to be corrected. The mounting ring 1 has a mounting hole 2 in the center. Each mounting ring 1 has a first anchor arm 3 and a second anchor arm 5 fixedly connected to its outer side. The contours of the first anchor arm 3 and the second anchor arm 5 match the inner wall of the patient's oral cavity. The section of the first anchor arm 3 and the second anchor arm 5 away from the mounting ring 1 is fixedly connected to an adhesive part 4. The contour of the outer wall of the adhesive part 4 matches the contour of the patient's tooth to be corrected. The side wall of the adhesive part 4 has an injection hole 6. The edge of the adhesive part 4 is provided with several protrusions. The outer side of the adhesive part 4 of the second anchor arm 5 is fixedly connected to a hanging ring 13. An elastic rope 12 is connected between adjacent limiting screws 11 and hanging rings 13. An anchor screw 7 is detachably disposed inside the mounting hole 2. During molar distalization, the anchorage screw 7 is inserted into the mounting hole 2, and then the anchorage screw 7 is implanted into the patient's palatal midline region. The mounting ring 1 is then fixed. At this time, the first anchorage arm 3 is located on the palatal side of the patient's first premolar, and the bonding portion 4 at the end of the first anchorage arm 3 is in contact with the inner wall of the patient's first premolar. The second anchorage arm 5 is located on the inner side of the patient's innermost posterior molar. Then, the bonding portions 4 of the two first anchorage arms 3 are bonded to the patient's two first premolars through the resin injection hole 6 to provide support for molar movement. The protrusion enhances the bond strength between the adhesive portion and the tooth. After the first arm 3 is fixed, a limiting screw 11 is implanted into the lateral wall of the innermost posterior molar. An elastic cord 12 connects the limiting screw 11 to the adhesive portion 4 at the end of the adjacent second arm 5. The elastic cord 12 pulls the innermost posterior molar distally towards the patient's mouth. Once the innermost posterior molar reaches the target position, the limiting screw 11 and elastic cord 12 are removed from the lateral wall of the posterior molar. At this point, the adhesive portion 4 at the end of the second arm 5 and the... The sidewalls of the posterior molars are fitted together, and then the limiting pin 11 is fixed to the sidewall of the second premolar between the first and posterior molars. The above steps are repeated, and the limiting pin 11 and the adhesive part 4 at the end of the second support arm 5 are connected by the elastic cord 12 to correct the position of the second premolar. After both the posterior and posterior molars are moved to the target position, the adhesive part 4 at the end of the first support arm 3 is detached from the first premolar, the first support arm 3 is cut off, and then the second support arm 5 is moved to the target position through the resin injection hole 6. The posterior molars are bonded together to support the movement of the first premolar and prevent the posterior molars from repositioning. Then, the above steps are repeated to insert a limiting screw 11 into the lateral wall of the first premolar. The limiting screw 11 and the bonding part 4 at the end of the second anchor arm 5 are connected by an elastic cord 12 to correct the position of the first premolar. Through the above steps, multiple molars can be moved distally in an orderly and controllable manner, which can effectively improve the orthodontic effect. The structure is simple, the operation is convenient, and it can avoid damage to the patient's oral cavity.

[0023] The outer wall of the anchorage screw 7 is provided with several external threads 8; the end of the anchorage screw 7 with the external threads 8 is tapered. By providing external threads 8 and setting the end of the external threads to be tapered, it is convenient to implant the anchorage screw 7 into the mid-palatal suture region of the patient.

[0024] A limiting ring 9 is fixedly connected to the end of the anchorage screw 7 away from the external thread 8. The limiting ring 9 facilitates the control of the implantation depth of the anchorage screw 7.

[0025] The side wall of the limiting ring 9 has a through hole 10. The through hole 10 facilitates the auxiliary installation of the support nail 7.

[0026] The diameter of the limiting ring 9 is larger than the diameter of the mounting hole 2.

[0027] Working principle: During molar distalization, the anchorage screw 7 is inserted into the mounting hole 2, and then the anchorage screw 7 is implanted into the patient's palatal midline area. The mounting ring 1 is then fixed. At this time, the first anchorage arm 3 is located on the palatal side of the patient's first premolar, and the bonding portion 4 at the end of the first anchorage arm 3 is in contact with the inner wall of the patient's first premolar. The second anchorage arm 5 is located on the inner side of the patient's innermost posterior molar. Then, the bonding portions 4 of the two first anchorage arms 3 are bonded to the first premolars on both sides of the patient through the resin injection hole 6, providing support for molar movement. By incorporating protrusions, the bonding strength between the adhesive portion and the tooth can be improved. After the first anvil 3 is fixed, a limiting screw 11 is implanted into the lateral wall of the patient's innermost posterior molar. Then, the limiting screw 11 is connected to the hanging ring 13 at the end of the adjacent second anvil 5 via an elastic cord 12. The elastic force of the elastic cord 12 pulls the innermost posterior molar to move distally into the patient's oral cavity. When the innermost posterior molar has moved to the target position, the limiting screw 11 and the elastic cord 12 on the lateral wall of the posterior molar are removed. At this time, the adhesive portion at the end of the second anvil 5 is... Part 4 is fitted against the sidewall of the posterior molar, and then the limiting pin 11 is fixed to the sidewall of the second premolar between the first premolar and the posterior molar. The above steps are repeated, and the limiting pin 11 and the hanging ring 13 at the end of the second support arm 5 are connected by the elastic rope 12 to correct the position of the second premolar. After both the posterior molar and the second premolar are moved to the target position, the bonding part 4 at the end of the first support arm 3 is detached from the first premolar, the first support arm 3 is cut off, and then the second support arm 5 is moved to the target position through the resin injection hole 6. The posterior molars are bonded together to support the movement of the first premolar and prevent the posterior molars from repositioning. Then, the above steps are repeated to insert a limiting screw 11 into the lateral wall of the first premolar. The limiting screw 11 and the hanging ring 13 at the end of the second anchor arm 5 are connected by an elastic cord 12 to correct the position of the first premolar. Through the above steps, multiple molars can be moved distally in an orderly and controllable manner, which can effectively improve the orthodontic effect. The structure is simple, the operation is convenient, and it can avoid damage to the patient's oral cavity.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for distalizing molars, characterized in that: The device includes a pair of fixedly connected mounting rings (1) and a limiting pin (11). The limiting pin (11) is detachably set on the inner wall of the patient's tooth to be corrected. The mounting ring (1) has a mounting hole (2) in the center. Each mounting ring (1) is fixedly connected to a first support arm (3) and a second support arm (5) on its outer side. The first support arm (3) and the second support arm (5) are fixedly connected to an adhesive part (4) on the section away from the mounting ring (1). The side wall of the adhesive part (4) has an injection hole (6). The edge of the adhesive part (4) is provided with several protrusions. The outer side of the adhesive part (4) of the second support arm (5) is fixedly connected to a hanging ring (13). An elastic rope (12) is connected between adjacent limiting pins (11) and hanging rings (13).

2. The device for distalizing molars according to claim 1, characterized in that: The mounting hole (2) is detachably provided with a support nail (7).

3. The device for distalizing molars according to claim 2, characterized in that: The outer wall of the anchoring nail (7) is provided with several external threads (8).

4. The device for distalizing molars according to claim 3, characterized in that: The end of the anchoring nail (7) away from the external thread (8) is fixedly connected to a limiting ring (9).

5. The device for distalizing molars according to claim 4, characterized in that: The side wall of the limiting ring (9) is provided with a through hole (10).

6. The molar distalization device according to claim 3, characterized in that: The end of the anchor nail (7) with external thread (8) is tapered.

7. A molar distalization device according to claim 4, characterized in that: The diameter of the limiting ring (9) is larger than the diameter of the mounting hole (2).

Images