CN110664499A

CN110664499A - Tooth backward pushing and grinding device

Info

Publication number: CN110664499A
Application number: CN201911039792.2A
Authority: CN
Inventors: 惠娜娜; 金钫; 杨妍; 曹鹏; 王智伟
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-01-10

Abstract

The invention relates to a tooth-grinding backward device, belonging to the technical field of medical instruments; the lower end of the traction hook is fixed on the upper surface of the retention ring, a square groove is arranged in the retention ring, a connecting rod is fixed on the lower end of the rear side wall of the retention ring, the connecting rod is composed of a first cross rod, a second cross rod and an arc rod, the front end of the first cross rod is fixed on the rear side wall of the retention ring, the arc rod is arranged at the rear end of the first cross rod, the second cross rod is arranged at the rear end of the arc rod, the second cross rod, the arc rod and the first cross rod are of an integrated structure, the retention ring is sleeved on the main arch wire and is abutted against a circular tube on the molar, the strength for pushing the molar to move far is adjusted by adjusting the length of the connecting rod, the molar is driven to move backwards by the circular tube, and therefore, the problems of large volume, poor comfort degree, adverse factors of dental crown far-middle inclination and poor stable correction effect of the existing molar pushing backward device are solved, low manufacturing cost and the like.

Description

Tooth backward pushing and grinding device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a tooth backward pushing and grinding device.

Background

In the orthodontic clinic, the incidence rate of class II malocclusion is relatively high, the class II malocclusion is one of important malocclusion types for orthodontic correction, the patients are often accompanied with crowded dentition, the patients are generally clinically corrected by tooth extraction or tooth pushing and grinding backward, for the patients who cause constant molar migration due to early loss of deciduous molars, the tooth pushing and grinding backward is a common correction means, the orthodontic appliance has the advantages that the natural physiological state of a jaw system is maintained, the stability of the occlusal relationship is facilitated, for the patients with good face type and slight crowdedness, the tooth pushing and grinding backward provides a gap to solve the crowded anterior teeth or slightly adducted anterior teeth, the existing backward installation of the tooth pushing and grinding needs to depend on the compliance of the patients, a traction device is also lacked, the overall backward effect of the molar cannot be realized due to the far-middle inclination, the appearance and the comfort level are extremely poor, and the improvement is needed urgently.

Disclosure of Invention

The invention aims to provide a tooth pushing and grinding backward device which is reasonable in design and convenient to use, aiming at the defects and shortcomings of the prior art, a retention ring is sleeved on a main arch wire and is abutted against a circular ring tube on a grinding tooth, the force for pushing the grinding tooth to move far is adjusted by adjusting the length of a connecting rod, and the grinding tooth is driven to move backward by the circular ring tube, so that the problems of large volume, poor comfort degree, adverse factors of dental crown far-middle inclination and poor stable correction effect in the existing tooth pushing and grinding backward device are solved.

In order to achieve the purpose, the invention adopts the technical scheme that: it contains draw hook, solid position circle and connecting rod, the lower extreme of drawing hook is fixed on the solid position circle upper surface, and square groove has been seted up to the inside of solid position circle, is fixed with the connecting rod on the lower extreme of solid position circle rear side wall, and this connecting rod comprises horizontal pole, No. two horizontal poles and arc pole, and the front end of horizontal pole is fixed on the rear side wall of solid position circle, and the rear end of horizontal pole is equipped with the arc pole, and the rear end of this arc pole is equipped with the horizontal pole No. two, this horizontal pole No. two, arc pole and horizontal pole formula structure as an organic whole.

Furthermore, an arch wire inlet is formed in the left side wall of the retention ring.

Further, the width of the square groove is 0.022 inch, and the height thereof is 0.028 inch.

After adopting the structure, the invention has the beneficial effects that: according to the molar pushing backward device, the retention ring is sleeved on the main arch wire and is abutted against the circular ring tube on the molar, the force for pushing the molar to move far is adjusted by adjusting the length of the connecting rod, and the molar is driven to move backward by the circular ring tube, so that the problems of large volume, poor comfort degree, adverse factors of dental crown inclination at far middle and low stable correction effect of the conventional molar pushing backward device are solved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of the present invention.

Fig. 3 is a schematic view of the installation of the present invention.

Description of reference numerals:

the arch wire fixing device comprises a traction hook 1, a fixing ring 2, a square groove 2-1, a connecting rod 3, a first cross rod 3-1, a second cross rod 3-2, an arc rod 3-3, an arch wire inlet 4, a main arch wire 5, a fixing groove 6, a rubber belt 7 and a fixing block 8.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to fig. 3, the following technical solutions are adopted in the present embodiment: it comprises a traction hook 1, a retention ring 2 and a connecting rod 3, the lower end of the traction hook 1 is welded and fixed on the upper surface of the retention ring 2, a square groove 2-1 is arranged inside the retention ring 2, an arch wire inlet 4 is arranged on the left side wall of the retention ring 2, the fixing ring 2 can be conveniently sleeved on the main arch wire 5, the lower end of the rear side wall of the fixing ring 2 is fixedly welded with the connecting rod 3, the connecting rod 3 consists of a first cross rod 3-1, a second cross rod 3-2 and an arc rod 3-3, the front end of the first cross rod 3-1 is welded and fixed on the rear side wall of the retaining ring 2, the arc rod 3-3 is arranged at the rear end of the first cross rod 3-1, the rear end of the arc-shaped rod 3-3 is provided with a second cross rod 3-2, and the second cross rod 3-2, the arc-shaped rod 3-3 and the first cross rod 3-1 are integrally formed.

Further, the width D of the square groove 2-1 is 0.022 inch, and the height H thereof is 0.028 inch.

The working principle of the specific embodiment is as follows: when the appliance is used, the arch wire inlet 4 on the retaining ring 2 is sleeved on the main arch wire 5 and is abutted against the circular tube with the ring on the molar, then the rear end of the second cross rod 3-2 is inserted into the fixing groove 6 on the tooth at the rear side, the traction hook 1 is hung on the rubber belt 7, the rear end of the rubber belt 7 is fixed on the gum through the fixing block 8, and when the appliance needs to be adjusted, the distance between the lower ends of the arc-shaped rods 3-3 is only required to be adjusted, so that the first cross rod 3-1 is driven to move towards the second cross rod 3-2, the bracket is driven to move through the retaining ring 2, and the effect of adjusting the tooth is achieved.

After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:

1. the retaining ring 2 is sleeved on the main arch wire 5 and is abutted against a circular ring tube on the molar, the force for pushing the molar to move far is adjusted by adjusting the length of the connecting rod 3, and the molar is driven to move backwards by the circular ring tube, so that the problems of large volume, poor comfort, adverse factors of dental crown far-middle inclination and poor stable correction effect in the conventional backward installation of the molar are solved;

2. an arch wire inlet 4 is formed in the left side wall of the retaining ring 2, so that the device is conveniently sleeved on the main arch wire 5;

although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A device for pushing and grinding teeth backwards, characterized in that: it comprises a traction hook (1), a retention ring (2) and a connecting rod (3), wherein the lower end of the traction hook (1) is fixed on the upper surface of the retention ring (2), a square groove (2-1) is arranged in the retention ring (2), the connecting rod (3) is fixed on the lower end of the rear side wall of the retention ring (2), the connecting rod (3) consists of a first cross rod (3-1), a second cross rod (3-2) and an arc rod (3-3), the front end of the first cross rod (3-1) is fixed on the rear side wall of the retaining ring (2), the arc rod (3-3) is arranged at the rear end of the first cross rod (3-1), the rear end of the arc-shaped rod (3-3) is provided with a second cross rod (3-2), and the second cross rod (3-2), the arc-shaped rod (3-3) and the first cross rod (3-1) are of an integrated structure.

2. A teething posterior device as claimed in claim 1, wherein: an arch wire inlet (4) is formed in the left side wall of the retaining ring (2), and a main arch wire (5) enters the retaining ring (2) from the arch wire inlet (4).

3. A teething posterior device as claimed in claim 1, wherein: the width of the square groove (2-1) is 0.022 inch, and the height thereof is 0.028 inch.

4. A teething posterior device as claimed in claim 1, wherein: the working principle is as follows: when the device is used, the retaining ring (2) is sleeved on the main arch wire (5) and is abutted against a circular tube with a ring on a molar, then the rear end of the second cross rod (3-2) is inserted into a fixing groove (6) on the tooth at the rear side, the traction hook (1) is hung on the rubber belt (7), the rear end of the rubber belt (7) is fixed on a gum through the fixing block (8), and when adjustment is needed, the distance between the lower ends of the arc-shaped rods (3-3) is adjusted to drive the first cross rod (3-1) to move towards the second cross rod (3-2), so that the bracket is driven to move through the retaining ring (2), and the effect of adjusting the tooth is achieved.