Single tooth torque auxiliary arch

Abstract

The utility model provides a single tooth torque auxiliary bow, including a straight wire, the straight wire is formed with the U type pressure arm to the downward bending, the one end of U type pressure arm is formed with the upper transverse arm to the inward bending, the end of upper transverse arm is formed with the lower transverse arm to the outward bending, the end of lower transverse arm is formed with the first counter arm to the forward side inclination and the upward bending of U type pressure arm, the other end of U type pressure arm is formed with the second counter arm to the forward side inclination and the upward bending of U type pressure arm, and the first counter arm and second counter arm form the predetermined included angle between U type pressure arm. The present application can control the tooth root of single anterior tooth to move to the lingual side easily, and the clinical effect is remarkable, and the simple production is small and exquisite, and the operation is convenient, and the patient is comfortable to wear.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a single-tooth torque auxiliary bow. Background Technology

[0002] Clinical studies have found that before or during orthodontic treatment, buccal bone openings and fractures are frequently observed on the labial and buccal sides of teeth, affecting orthodontic movements such as intrusion and retraction. For the safety and stability of orthodontic treatment, it is necessary to first move the roots of teeth with bone openings or fractures to the middle of the alveolar bone, i.e., the cancellous bone, before performing orthodontic movements such as intrusion and retraction. Currently, methods for correcting buccal bone openings and fractures on the labial and buccal sides of anterior teeth include using high-torque brackets, square wires with positive torque, and torque-assisted arches with added positive torque. Simultaneously, intramaxillary traction or intermaxillary traction is often required to control the crown position and prevent bone openings from developing into fractures or worsening existing fractures.

[0003] However, the application of high-torque brackets and square wires with positive torque often yields unsatisfactory results. Professor Li Yu of the West China School of Stomatology, Sichuan University, designed two types of "gate-shaped" auxiliary arches to help improve anterior tooth torque. One type is directly welded to the main archwire, which is relatively complex to manufacture; the other type uses traction hook clamps to help fix it to a rigid square wire. However, both of these auxiliary arches can only be used with rigid square wires. The inventor of this application previously designed a torque control device for a single tooth (application number CN202222953028.X). This torque control device has good results, but its operation is relatively complex. On the one hand, it needs to be inserted into the orthodontic main archwire, and on the other hand, it needs to be ligated. This makes it relatively complicated to deal with bone fenestration and bone fracture in a single anterior tooth. Utility Model Content

[0004] In response to the existing technical problem that controlling the lingual movement of the root of a single anterior tooth is quite complex when the crown of the anterior tooth is tilted to the lingual side or the root is fractured on the labial side during orthodontic treatment or from the beginning, this utility model provides a single-tooth torque-assisted bow.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A single-tooth torque assist bow includes a straight metal wire with a U-shaped pressure arm bent downwards. One end of the U-shaped pressure arm is bent inwards to form an upper transverse arm, and the end of the upper transverse arm is bent outwards to form a lower transverse arm. The end of the lower transverse arm is inclined forward and bent upwards at the U-shaped pressure arm to form a first counter-arm. The other end of the U-shaped pressure arm is inclined forward and bent upwards to form a second counter-arm. The first and second counter-arms form a predetermined angle with the U-shaped pressure arm.

[0007] Compared with the prior art, the single-tooth torque auxiliary arch provided by this utility model, when assembled onto the tooth surface in conjunction with an orthodontic appliance to control the lingual movement of a single anterior tooth root, firstly, the bent U-shaped pressure arm is attached to the surface of the single anterior tooth whose root needs to be moved, ensuring that the U-shaped bottom of the U-shaped pressure arm is in contact with the tooth root, and the upper transverse arm abuts against the lower side of the orthodontic bracket bonded to the tooth surface, while the lower transverse arm abuts against the tooth surface below the orthodontic bracket. At this time, the first and second anti-arms will... The main archwire of the orthodontic appliance is tilted at the front of the U-shaped pressure arm. It is then gradually tightened, pressing the main archwire firmly against the first and second opposing arms to apply force to the U-shaped pressure arm. This allows the U-shaped pressure arm to exert a lingual force on the tooth root, thus controlling the lingual movement of the root of a single anterior tooth. This control is relatively easy and has significant clinical effects. Simultaneously, after the U-shaped pressure arm applies force to the root of the anterior tooth, the entire torque auxiliary arch tends to move towards the gingiva. The upper and lower transverse arms prevent this gingival movement. This application is simple to manufacture, compact in size, easy to operate, and comfortable for patients to wear.

[0008] Furthermore, the distance between the bottom edge of the U-shaped pressure arm and the upper transverse arm is 5-7mm.

[0009] Furthermore, the predetermined angle formed between the first and second counter-arms and the U-shaped pressure arm is 15-45 degrees.

[0010] Furthermore, a balance arm is connected between the ends of the first and second counter-arms.

[0011] Furthermore, the distance between the balance arm and the upper transverse arm is 4-5 mm.

[0012] Furthermore, safety rings are formed at the ends of the first and second counter-arms.

[0013] Furthermore, the distance between the safety ring and the upper transverse arm is 4-5 mm. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a single-tooth torque auxiliary bow provided by this utility model.

[0015] Figure 2 This is a diagram showing the usage state of a single-tooth torque auxiliary bow provided by this utility model.

[0016] Figure 3 This is a schematic diagram of another single-tooth torque auxiliary bow provided by this utility model.

[0017] In the diagram, 1 is the U-shaped pressure arm; 2 is the upper transverse arm; 3 is the lower transverse arm; 4 is the first counter-arm; 5 is the second counter-arm; 6 is the balance arm; 7 is the safety ring; 100 is the bracket; and 101 is the main bow wire. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations.

[0019] In the description of this utility model, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please refer to Figure 1 and Figure 2As shown, this utility model provides a single-tooth torque assist arch, including a straight metal wire. A U-shaped pressure arm 1 is formed by bending the straight metal wire downwards. One end of the U-shaped pressure arm 1 is bent inwards (inner side of the U-shaped pressure arm) to form an upper transverse arm 2. During use, the upper transverse arm 2 is adapted to abut against the lower side of the orthodontic bracket 100 bonded to the tooth surface to prevent the torque assist arch from sliding towards the gum line. The end of the upper transverse arm 2 is bent outwards (outer side of the U-shaped pressure arm) to form a lower transverse arm 3. The end of the lower transverse arm 3 is inclined forward from the U-shaped pressure arm and bent upwards to form a first counter-arm 4. The other end of the U-shaped pressure arm 1 is inclined forward and bent upward to form a second counter-arm 5. That is, the first counter-arm 4 and the second counter-arm 5 are respectively formed on the front side of the U-shaped pressure arm 1 and inclined upward. The first counter-arm 4 and the second counter-arm 5 form a predetermined angle with the U-shaped pressure arm 1. That is, since the first counter-arm 4 and the second counter-arm 5 are bent upward and formed on the front side of the U-shaped pressure arm 1, there must be an angle between the first counter-arm 4 and the second counter-arm 5 and the U-shaped pressure arm 1, so that the U-shaped pressure arm 1 is in a different plane than the first counter-arm 4 and the second counter-arm 5.

[0022] Compared with the prior art, the single-tooth torque auxiliary arch provided by this utility model, when assembled onto the tooth surface in conjunction with an orthodontic appliance to control the lingual movement of a single anterior tooth root, firstly, the bent U-shaped pressure arm is attached to the surface of the single anterior tooth whose root needs to be moved, ensuring that the U-shaped bottom of the U-shaped pressure arm is in contact with the tooth root, and the upper transverse arm abuts against the lower side of the orthodontic bracket bonded to the tooth surface, while the lower transverse arm abuts against the tooth surface below the orthodontic bracket. At this time, the first and second anti-arms will... The main archwire of the orthodontic appliance is tilted at the front of the U-shaped pressure arm. It is then gradually tightened, pressing the main archwire firmly against the first and second opposing arms to apply force to the U-shaped pressure arm. This allows the U-shaped pressure arm to exert a lingual force on the tooth root, thus controlling the lingual movement of the root of a single anterior tooth. This control is relatively easy and has significant clinical effects. Simultaneously, after the U-shaped pressure arm applies force to the root of the anterior tooth, the entire torque auxiliary arch tends to move towards the gingiva. The upper and lower transverse arms prevent this gingival movement. This application is simple to manufacture, compact in size, easy to operate, and comfortable for patients to wear.

[0023] As a specific embodiment, the distance between the bottom edge of the U-shaped pressure arm 1 and the upper transverse arm 2 is 5-7mm, so as to adapt to different clinical crown lengths and make the force application position of the U-shaped pressure arm as close as possible to the root of the tooth; at the same time, the upper transverse arm 2 can also better cooperate and abut against the lower side of the bracket of the orthodontic appliance to prevent the torque auxiliary arch from sliding towards the gum.

[0024] In a specific embodiment, the predetermined angle formed between the first counter-arm 4 and the second counter-arm 5 and the U-shaped pressure arm 1 is 15-45 degrees, which allows the main archwire 101 of the existing orthodontic appliance to press tightly against the first counter-arm 4 and the second counter-arm 5 to apply force to the U-shaped pressure arm 1, thereby allowing the U-shaped pressure arm to apply a suitable root-tongue movement force.

[0025] For a specific embodiment, please refer to Figure 1 and Figure 2 As shown, a balance arm 6 is connected between the ends of the first counter-arm 4 and the second counter-arm 5, which can smoothly (balanced left and right) apply force to the U-shaped pressure arm 1, thereby achieving smooth movement of the root of the anterior tooth. At the same time, this torque auxiliary bow is constructed into a closed-loop structure with a completely closed path. In addition, all bends are designed with rounded corners, which can reduce the damage to the patient's gums caused by this torque auxiliary bow and improve the patient's wearing comfort.

[0026] In a specific embodiment, the distance between the balance arm 6 and the upper transverse arm 2 is 4-5mm, which can both connect the two counter-arms and reduce irritation to the lip mucosa.

[0027] As another specific embodiment, please refer to Figure 3 As shown, the ends of the first counter-arm 4 and the second counter-arm 5 are formed with safety rings 7, which can effectively prevent the ends of the counter-arms from irritating the oral mucosa.

[0028] As a specific embodiment, the distance between the safety ring 7 and the upper transverse arm 2 is 4-5mm, which ensures that the counterarm is behind the main archwire without being too long and irritating the oral mucosa.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A single-tooth torque-assisted bow, characterized in that, It includes a straight metal wire, on which a U-shaped pressure arm (1) is bent downward. One end of the U-shaped pressure arm (1) is bent inward to form an upper transverse arm (2), and the end of the upper transverse arm (2) is bent outward to form a lower transverse arm (3). The end of the lower transverse arm (3) is inclined forward and bent upward to form a first counter-arm (4) at the front of the U-shaped pressure arm. The other end of the U-shaped pressure arm (1) is inclined forward and bent upward to form a second counter-arm (5). The first counter-arm (4) and the second counter-arm (5) form a predetermined angle with the U-shaped pressure arm (1).

2. The single-tooth torque auxiliary bow according to claim 1, characterized in that, The distance between the bottom edge of the U-shaped pressure arm (1) and the upper transverse arm (2) is 5-7 mm.

3. The single-tooth torque auxiliary bow according to claim 1, characterized in that, The predetermined angle formed between the first counter-arm (4) and the second counter-arm (5) and the U-shaped pressure arm (1) is 15-45 degrees.

4. The single-tooth torque auxiliary bow according to claim 1, characterized in that, A balance arm (6) is connected between the ends of the first counter-arm (4) and the second counter-arm (5).

5. The single-tooth torque auxiliary arch according to claim 4, characterized in that, The distance between the balance arm (6) and the upper transverse arm (2) is 4-5 mm.

6. The single-tooth torque auxiliary bow according to claim 1, characterized in that, Safety rings (7) are formed at the ends of the first counter-arm (4) and the second counter-arm (5).

7. The single-tooth torque auxiliary bow according to claim 6, characterized in that, The distance between the safety ring (7) and the upper transverse arm (2) is 4-5 mm.

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