Molar mesial movement auxiliary device

Abstract

The utility model discloses a molar mesial movement auxiliary device which comprises a main arch wire, a plurality of orthodontic brackets, an auxiliary arch wire, a ligature wire and an anchorage nail, the main arch wire penetrates through the orthodontic brackets and is fixed with the orthodontic brackets, two question mark hooks of the auxiliary arch wire are sleeved on the main arch wire, and the ligature wire is connected with the anchorage nail. The auxiliary arch wire is further provided with two small circles formed by bending, the small circle in the distal direction is rigidly connected to an anchorage nail planted on the alveolar bone through a fixing ligature wire, and the other small circle is free. According to the utility model, a stable rectangular structure can be formed, after force application, interference caused by lip and cheek movement or feeding is avoided, displacement is avoided, foreign body sensation is reduced, the bad effect of distal movement of anterior teeth and premolars can be avoided, friction force of tooth movement is not increased, and meanwhile, the structure is simple and convenient. And when the molars move forwards, the lip inclination acting force on the anterior teeth is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of tooth movement technology, and in particular to an auxiliary device for mesial movement of molars. Background Technology

[0002] There are three types of molar occlusion: the first is called neutral malocclusion, the second is called distal malocclusion, and the third is called mesial malocclusion.

[0003] In mesial malocclusion, the lower dental arch and mandible are in a mesial position. If the mandible is moved anteriorly by 1 / 4 of a molar or half the distance of a premolar, i.e., the mesiobuccal cusp of the upper first permanent molar is opposite the distobuccal cusp of the lower first permanent molar, it is called a mild mesial malocclusion. If the mandible is moved mesially by 1 / 2 of a molar or the distance of one premolar, such that the mesiobuccal cusp of the upper first permanent molar occludes between the lower first and second permanent molars, it is a complete mesial malocclusion.

[0004] When molars are mesialized, because the anchorage of posterior teeth is greater than that of anterior teeth, simple intramaxillary traction for molar mesialization can easily lead to undesirable results such as distal movement of anterior teeth and premolars. If only anchorage screws are used to traction molars, undesirable results such as mesial tilting and molar intrusion can easily occur. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a molar mesial movement assist device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A molar mesial movement assist device includes a main archwire, multiple orthodontic brackets, an auxiliary archwire, ligature wires, and anchorage screws. The main archwire passes through and is fixed to the multiple orthodontic brackets. Two question mark hooks of the auxiliary archwire are sleeved on the main archwire. The auxiliary archwire also has two small loops formed by bending. The small loop in the distal direction is rigidly connected to the anchorage screw implanted in the alveolar bone by ligature wires, while the other small loop is free. A traction hook is fixedly connected to the top of one of the orthodontic brackets. A traction elastic band is sleeved on the mesial portion of the auxiliary archwire, and the traction elastic band is connected to the traction hook.

[0008] As a further improvement of this utility model, one end of the traction hook is integrally formed with an arc surface.

[0009] As a further embodiment of this invention, the auxiliary bowwire and the main bowwire form a rectangular structure.

[0010] As a further improvement of this utility model, the auxiliary bowwire is made of 0.019×0.025 inch stainless steel wire.

[0011] As a further improvement of this invention, the multiple orthodontic brackets correspond one-to-one with multiple teeth.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. By using auxiliary steel wires, the device ultimately forms a stable rectangular structure. After force is applied, it will not be affected by lip and cheek movements or eating, and will not shift, thus reducing the feeling of a foreign object.

[0014] 2. By indirectly using anchorage screws, when applying force to move the molars mesially, the reaction force will not be applied to the anterior teeth or premolars, but will be transmitted to the anchorage screws through the auxiliary archwire, thus avoiding the adverse effects of distal movement of the anterior teeth and premolars.

[0015] 3. By using a question mark hook for fixation at the end of the main archwire, there is no complete fixation, which does not increase the frictional force of tooth movement. At the same time, the labial inclination force of the molars on the anterior teeth is also reduced. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the molar mesial movement assist device proposed in this utility model;

[0017] Figure 2 This is an enlarged structural diagram of part A of the molar mesial movement assist device proposed in this utility model;

[0018] Figure 3 This is an enlarged structural diagram of part B of the molar mesial movement auxiliary device proposed in this utility model.

[0019] In the diagram: 1. Main archwire; 2. Orthodontic bracket; 3. Traction elastic band; 4. Question mark hook; 5. Auxiliary archwire; 6. Small loop; 7. Ligating wire; 8. Anchorage screw; 9. Traction hook; 10. Curved surface. Detailed Implementation

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Therefore, all other embodiments of this application described herein, and all embodiments obtained by those skilled in the art without creative effort based on the embodiments in this application, should fall within the scope of protection of this application.

[0021] Reference Figures 1-3The molar mesial movement assist device includes a main archwire 1, multiple orthodontic brackets 2, an auxiliary archwire 5, a ligature wire 7, and an anchorage screw 8. The main archwire 1 passes through and is fixed to the multiple orthodontic brackets 2. The main archwire 1 is fitted with two question mark hooks 4 bent from the auxiliary archwire 5. The auxiliary archwire 5 is also bent to form two small loops 6, the distal small loops 6 of which are rigidly connected to the anchorage screw 8 implanted in the alveolar bone by the ligature wire 7. A traction hook 9 is welded to the top of one of the orthodontic brackets 2. A traction elastic band 3 is fitted mesially to the auxiliary archwire 5 and is connected to the traction hook 9. The multiple orthodontic brackets 2 are respectively bonded to the tooth with orthodontic adhesive. On the teeth, the main archwire 1 passes through and is fixed in multiple orthodontic brackets 2. The question mark hooks 4 of the auxiliary archwire 5 are hooked on the main archwire. Then, the distal small loops on the auxiliary archwire 5 are connected and fixed to the anchorage screws 8 implanted in the alveolar bone through the ligature wires 7. Then, the traction elastic band 3 is put on the mesial part of the auxiliary archwire 5 and hooked on the traction hook 9, thus completing the installation. When in use, the molars can be directly hooked to the mesial arm of the auxiliary archwire 5 to achieve force-assisted mesial translation. The distal small loops are rigidly ligated to the anchorage screws 8 to stabilize the device. The two question mark hooks 4 below are hooked on the stainless steel wire of the main archwire 1 of the dental arch. At this time, the entire device is in a stable and immobile state.

[0022] In this invention, one end of the traction hook 9 is integrally formed with an arc surface 10, which can prevent the traction hook 9 from causing damage to the inside of the oral cavity. The auxiliary archwire 5, the anchorage screw 8 and the main archwire 1 form a rectangular structure. The auxiliary archwire 5 is made of 0.019×0.025 inch stainless steel wire. Multiple orthodontic brackets 2 correspond one-to-one with multiple teeth.

[0023] Working principle: Multiple orthodontic brackets 2 are attached to the teeth with orthodontic adhesive. The main archwire 1 is passed through and fixed in the multiple orthodontic brackets 2. The question mark hooks 4 of the auxiliary archwire 5 are hooked on the main archwire. Then, the distal small loops on the auxiliary archwire 5 are connected and fixed to the anchorage screws 8 implanted in the alveolar bone through the ligature wires 7. Then, the traction elastic band 3 is put on the mesial part of the auxiliary archwire 5 and hooked on the traction hook 9, thus completing the installation. When in use, the molars can be directly hooked to the mesial arm of the auxiliary archwire 5 to achieve force-assisted mesial translation. The distal small loops are rigidly ligated to the anchorage screws 8 to stabilize the device. The two question mark hooks 4 at the bottom are hooked on the stainless steel wire of the main archwire 1 of the dental arch. At this time, the entire device is in a stable and immobile state.

[0024] This utility model has been described through the above embodiments. Those skilled in the art will understand that this utility model is not limited to the above embodiments. Many more modifications can be made based on the teachings of this utility model, and all such modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for assisting mesial movement of molars, comprising a main archwire (1), a plurality of orthodontic brackets (2), an auxiliary archwire (5), a ligature wire (7) and anchorage pins (8), characterized in that, The main arch wire (1) passes through and is fixed with a plurality of orthodontic brackets (2), the main arch wire (1) is sleeved with two question hooks (4) bent by an auxiliary arch wire (5), and two small circle curves (6) are formed by bending the auxiliary arch wire (5), one of the small circle curves (6) is rigidly connected to an anchorage nail (8) implanted in the alveolar bone through a ligation wire (7), the top of one of the orthodontic brackets (2) is provided with a traction hook (9), the mesial steel wire of the auxiliary arch wire (5) is sleeved with a traction rubber band (3), and the traction rubber band (3) is connected with the traction hook (9).

2. The molar mesialization assist device of claim 1, wherein, One end of the traction hook (9) is integrally formed with a camber (10).

3. The molar mesialization assist device of claim 1, wherein, A rectangular structure is formed between the auxiliary arch wire (5) and the main arch wire (1).

4. The molar mesialization assist device of claim 1, wherein, The auxiliary arch wire (5) is made of 0.019*0.025 inch stainless steel wire.

5. The molar mesialization assist device of claim 1, wherein, A plurality of orthodontic brackets (2) are in one-to-one correspondence with a plurality of teeth respectively.

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