Molar extension and remote movement device for correction

Abstract

The utility model discloses an orthodontic molar extension and remote movement device which comprises a pair of fixing blocks used for being fixed on the outer side walls of adjacent molars, the side walls, facing the gum, of the two fixing blocks are jointly connected with an elastic assembly, and the tail end of the elastic assembly is provided with a fixing assembly used for fixing the elastic assembly on the gum. The elastic assembly is a continuous bent metal wire, the metal wire is divided into two sides, the metal wire on each side comprises a fixing block connecting section connected to the side wall of the fixing block, the other end of each fixing block connecting section is connected with an elastic bent section, the other end of each elastic bent section is connected with a gum connecting section, and one ends of the gum connecting sections on the two sides are jointly connected with a lantern ring. According to the utility model, the stress supporting point of the extension and remote movement molar is adjusted to the gum, the adjacent molar is not influenced, the two molar can be adjusted at one time, and the orthodontic time can be greatly shortened and the orthodontic efficiency can be improved when the orthodontic appliance is combined with an invisible orthodontic appliance for common use.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a device for molar elongation and distalization in orthodontic treatment. Background Technology

[0002] Invisible aligners are increasingly favored by dental patients due to their aesthetic appeal and comfort, and have become an important tool in orthodontic treatment. However, there are still shortcomings in the vertical adjustment of molars. Data shows that insufficient molar elongation is a common cause of invisible aligner failure, because invisible aligners struggle to establish an effective vertical anchorage system. Furthermore, to improve facial profiles and relieve crowding, distal movement of molars is often necessary. The reaction force of invisible aligners during molar movement weakens the efficiency of this movement, sometimes even causing bone fenestration at the root of incisors.

[0003] To address the aforementioned issues, an additional device is needed to elongate and distalize molars. However, in the current device (CN2023115908047), the force fulcrum for elongating the molars comes from adjacent molars. This may have adverse effects on adjacent molars, especially when adjacent molars also require elongation and distalization. In such cases, the current device proves inadequate. Furthermore, this device can only treat a single molar at a time. If multiple molars require elongation and distalization, they must be treated in batches, which increases the treatment time and is both time-consuming and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a molar elongation and distalization device for orthodontic treatment, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A molar elongation and distalization device for orthodontic treatment includes a molar elongation and distalization device for orthodontic treatment, characterized in that: it includes a pair of fixing blocks for fixing to the lateral wall of adjacent molars, and the two fixing blocks are connected to an elastic component on the side wall facing the gum, the end of the elastic component being used to fix it to the gum.

[0007] In a further embodiment, the elastic component is a continuous curved metal wire, which is divided into two sides. Each side of the metal wire includes a fixed block connecting segment connected to the side wall of the fixed block. The other end of the fixed block connecting segment is connected to an elastic curved segment, and the other end of the elastic curved segment is connected to a dental connecting segment. One end of both dental connecting segments is connected to a collar.

[0008] In a further embodiment, the fixed block connecting segment, the elastic bending segment, and the jaw connecting segment on each side together form an inclined Ω shape. The fixed block connecting segments on both sides are inclined in the direction of the mouth and away from other teeth. The elastic bending segment expands and bends in an arc shape towards the outside of the metal wire.

[0009] In a further embodiment, the end of the elastic component is provided with a dental fixation pin, and the dental fixation pin is provided with a groove for clamping the fixing collar.

[0010] Preferably, the fixing block, the metal wire, and the dental fixation pin are all made of stainless steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] In this invention, the force fulcrum for elongating and displacing molars is adjusted to the alveolar bone, without affecting adjacent molars. Moreover, this invention can adjust two molars at once. When used in conjunction with invisible aligners, it can greatly reduce treatment time and improve treatment efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the usage state of this utility model;

[0015] Figure 3 This is a schematic diagram showing the positional relationship between the dental fixation pin and the collar of this utility model;

[0016] Figure 4 This is a schematic diagram illustrating the gradual improvements of this utility model;

[0017] Figure 5 This is a schematic diagram of the mechanical relationship of this utility model.

[0018] In the diagram: 1. Fixing block; 2. Metal wire; 3. Fixing block connecting section; 4. Elastic bending section; 5. Gum connecting section; 6. Gum fixing pin; 7. Collar; 8. Gum; 9. Molar. Detailed Implementation

[0019] 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.

[0020] Implementation, for example Figure 1-3As shown, this embodiment provides a molar elongation and distalization device for orthodontic treatment, characterized in that it includes a pair of fixing blocks 1 for fixing to the outer wall of adjacent molars 9. The two fixing blocks 1 are connected to an elastic component on the sidewall facing the alveolar bone 8. The end of the elastic component is provided with a fixing component for fixing it to the alveolar bone 8. The elastic component is a continuous curved metal wire 2, divided into two sides. Each side of the metal wire 2 includes a fixing block connecting section 3 connected to the sidewall of the fixing block 1. The other end of the fixing block connecting section 3 is connected to an elastic curved section 4, and the other end of the elastic curved section 4 is connected to an alveolar bone connecting section 5. A collar 7 is connected to one end of each side of the alveolar bone connecting section 5. The fixing block connecting section 3, the elastic curved section 4, and the alveolar bone connecting section 5 together form an inclined Ω shape. The fixing blocks 1, the metal wire 2, and the alveolar bone fixing pins 6 are all made of stainless steel. In this embodiment, the force fulcrum of the elongated molar 9 is adjusted to the position of the gum 8 without affecting the adjacent molars 9. Moreover, two molars 9 can be adjusted at the same time. When used in conjunction with invisible aligners, the treatment time can be greatly reduced and the treatment efficiency can be improved.

[0021] Among them, the two fixed block connecting sections 3 are simultaneously inclined in the direction of the mouth and away from other teeth, so that the elastic bending section 4 can provide a force for elongation and away from other teeth on the molar 9 at the same time, that is, provide a force for elongation and displacement.

[0022] The fixing component is a dental fixation pin 6, which has a groove for holding a fixing collar 7. The outer edge of the groove can be made into an arc-shaped chamfer to facilitate the engagement and removal of the collar 7 in the groove, and to facilitate the maintenance and replacement of the elastic bending section 4 without removing the dental fixation pin 6.

[0023] Among them, the elastic bending segment 4 expands and bends in an arc shape towards the outside of the metal wire 2, such as Figure 4 The bending method shown is the result of multiple test experiments. Specific force analysis is as follows: Figure 5As shown, segments ah and bk face the same direction. During compression, segment dk shows significant downward movement, which in turn pushes point b downward and distally. Segment hf deforms very little, but significant deformation at fz pushes point c downward and distally towards point h. This, in turn, pushes point a downward and distally. An angle α is set between fg and the horizontal plane, making α an acute angle, β remains acute, and segment fh is kept above the horizontal dashed line A, so that deformation is mainly concentrated in segment fz. Furthermore, angles θ and δ are set as obtuse, angle α as acute, and point f is higher than point c. This setting must be maintained not only in the static case but also after the required elastic deformation is achieved. The length between points c and o can be adjusted based on the horizontal distance between points a and b. If ab is shorter, the length of co can be reduced accordingly. The vertical distance between az can also be adjusted proportionally to the magnitude of the force and the vertical distance between the dental fixation pin 6 and the fixation block 1.

[0024] In use, the two fixing blocks 1 are glued to the outer wall of the molar 9 with medical glue. Then, the collar 7 is engaged in the groove of the dental fixation nail 6. The dental fixation nail 6 is then used to fix the collar 7 on the metal wire 2 to the dental 8. During fixation, the elastic bending section 4 needs to be compressed to a certain extent. The degree of compression depends on the degree of orthodontic treatment of the molar 9.

[0025] 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 molar elongation and distalization device for orthodontic treatment, characterized in that: It includes a pair of fixing blocks (1) for fixing to the outer wall of adjacent molars, the two fixing blocks (1) being connected together to an elastic component on the side wall facing the gum, the end of the elastic component being used to fix it to the gum.

2. The orthodontic molar elongation and distalization device according to claim 1, characterized in that: The elastic component is a continuous curved metal wire (2), which is divided into two sides. Each side of the metal wire (2) includes a fixed block connecting section (3) connected to the side wall of the fixed block (1). The other end of the fixed block connecting section (3) is connected to an elastic curved section (4), and the other end of the elastic curved section (4) is connected to a dental connecting section (5). One end of the two dental connecting sections (5) is connected to a collar (7).

3. The orthodontic molar elongation and distalization device according to claim 2, characterized in that: The fixed block connecting section (3), the elastic bending section (4), and the jaw connecting section (5) on each side together form an inclined Ω shape. The fixed block connecting sections (3) on both sides are inclined in the direction of the mouth and away from other teeth. The elastic bending section (4) expands and bends in an arc shape towards the outside of the metal wire (2).

4. The orthodontic molar elongation and distalization device according to claim 3, characterized in that: The end of the elastic component is provided with a dental fixation pin (6), and the dental fixation pin (6) is provided with a groove for clamping the fixing collar (7).

5. The orthodontic molar elongation and distalization device according to claim 4, characterized in that: The fixing block (1), the metal wire (2), and the dental fixation nail (6) are all made of stainless steel.

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