CN217118629U

CN217118629U - Multi-dimensional orthodontic traction device for root control

Info

Publication number: CN217118629U
Application number: CN202220778166.6U
Authority: CN
Inventors: 陈莉莉; 周鑫; 廖梦玲; 金玲
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-05
Anticipated expiration: 2032-04-06

Abstract

The utility model discloses a multidimensional orthodontic traction device for root control, which comprises an orthodontic bracket and a traction rod, wherein the orthodontic bracket is provided with a plurality of vertical pipes connected with the traction rod, the orthodontic bracket is pasted on the surface of teeth through a bonding agent, an orthodontic wire passes through a groove on the orthodontic bracket, and two ends of the orthodontic wire are positioned on conventional brackets on the surfaces of the teeth at two sides; the tops of the traction rods are inserted into the selected vertical pipes according to the correcting positions, and the roots of the traction rods are connected together through rubber chain rings. The utility model discloses think about ingenious, compact structure is reasonable, uses adjustment convenient and fast, and alternative strong has realized correcting the better help tooth of in-process and has accomplished accuse root motion, has improved and has rescued efficiency.

Description

Multi-dimensional orthodontic traction device for root control

Technical Field

The utility model relates to an orthodontic field especially relates to an orthodontic draw gear of multidimension degree for accuse root.

Background

At present, clinically, teeth are corrected by a common operation method that orthodontic brackets are stuck on the teeth, an arch wire penetrates through a groove in the middle of the orthodontic brackets, and the elastic deformation of the deformed arch wire in the groove and the elastic force generated by placing an elastic chain ring between the orthodontic brackets are utilized to drive the orthodontic brackets to apply force to crowns so as to align the teeth. However, in the case of a tooth whose both sides are severely inclined after a long-term tooth loss, the force directly acting on the crown cannot effectively pull the root of the inclined tooth to the gap side.

The center of resistance (center of resistance) is the center of the resultant force to which a tooth is subjected when the tooth is maintained in equilibrium; the tooth is a balance point when the tooth is in a static state, and when an external force acts on the point, the tooth only generates parallel movement along the direction of the acting force without rotating; the position of the center of resistance of a tooth varies depending on the length of the root, the shape, and the height of the alveolar bone. The center of resistance of a single tooth is on the long axis of the tooth and is about at the junction of the root neck 1/3 and the middle 1/3, and the center of resistance of multiple teeth is about 1-2 mm below the root bifurcation. The center of rotation (center of rotation) refers to that when an object rotates under the action of an external force, each point on the object rotates around the center of a certain concentric circle, and the center of the circle is the rotation center. The position of the rotation center is related to the tooth moving mode, and the position of the rotation center changes along with the ratio of the moment and the force applied to the tooth, namely the change of the M/F value. In orthodontic treatment, the types of tooth movement are generally classified into tilt movement, integral movement, root control movement (torque movement), vertical movement, and rotational movement. When the tooth is lacked for a long time, the crowns of the teeth on two sides of the lacked tooth are inclined to the lacked space, but the roots of the teeth face to the opposite direction. To close the edentulous space, the root of the tooth is first required to overcome the alveolar bone resistance and swing towards the edentulous space. The movement of the root control means that the tooth crown is basically fixed, but the movement mode of the tooth root is mainly moved, and the rotating center is positioned at the incisal margin of the tooth crown when the root control moves. Clinically, force cannot be directly applied to the tooth root, after the tooth crown is stressed, the tooth takes the resistance center as the center, and the moving directions of the tooth crown and the tooth root are easy to be opposite, so that the root control moving is not easy to realize, and the tooth inclines and moves to close the gap.

Therefore, how to develop a multi-dimensional orthodontic traction device for root control to better help the movement of the root control of teeth in the correction process and improve the correction efficiency becomes a technical problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an just abnormal draw gear of multidimension degree for accuse root, its application scope is wider, and simple structure is clear, easily masters, can change at any time according to the patient oral cavity condition, and patient's comfort level is good, is correcting the accuse root motion of in-process better help tooth to improve advantages such as efficiency of correcting.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model relates to a multi-dimensional orthodontic traction device for controlling root, which comprises an orthodontic bracket and a traction rod, wherein the orthodontic bracket is provided with a plurality of vertical pipes connected with the traction rod, the orthodontic bracket is adhered on the surface of teeth through a bonding agent, an orthodontic wire passes through a groove on the orthodontic bracket, and two ends of the orthodontic wire are positioned on conventional brackets on the surfaces of the teeth at two sides; the tops of the traction rods are inserted into the selected vertical pipes according to the correcting positions, and the roots of the traction rods are connected together through rubber chain rings.

Furthermore, the orthodontic bracket is provided with three vertical tubes, namely a first vertical tube, a second vertical tube and a third vertical tube, wherein the second vertical tube is positioned in the middle and is vertically arranged, and the first vertical tube and the third vertical tube are obliquely and symmetrically distributed on two sides of the second vertical tube.

Furthermore, the diameters of the first vertical pipe, the second vertical pipe and the third vertical pipe are all 0.5 mm-1.0 mm, and the angle between every two adjacent vertical pipes is 30-45 degrees.

Furthermore, the traction rod comprises a fixing part, a middle rod part and a lower traction hook, the fixing part, the middle rod part and the lower traction hook are connected into a whole, the fixing part is close to the end of the bracket, the lower traction hook is close to the gum side, and the middle rod part is located in the hollow cavity of the vertical pipe.

Furthermore, the traction rod is formed by bending a stainless steel wire, and the total length of the traction rod is 10-15 mm.

Further, the length of fixed part is 2mm, and the diameter is 0.45mm, the length of middle section pole portion is 3mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 5mm, and the diameter is 0.8 mm.

Further, the length of fixed part is 3mm, and the diameter is 0.45mm, the length of middle section pole portion is 4mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 8mm, and the diameter is 1.0 mm.

Further, the length of fixed part is 3mm, and the diameter is 0.45mm, the length of middle section pole portion is 4mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 5mm, and the diameter is 1.0 mm.

Further, the fixing portion is provided with a resin projection for protection.

Compared with the prior art, the utility model discloses a beneficial technological effect:

1) the utility model discloses an orthodontic bracket contains the standpipe design of three direction, and orthodontic bracket is connected for the active connection with the traction lever part, and the standpipe design selectivity of three not equidirectional is strong, the removal of control tooth that can the multidimension degree, and application scope is extensive.

2) The utility model has the advantages of simple and clear design structure, the use is mastered easily to just abnormal beginner, and it is not obvious to put into intraoral patient foreign body sensation, and the comfort level is better.

3) The specification and the position of the traction rod can be adjusted at any time according to the actual condition of the oral cavity of a patient.

4) The utility model discloses can finely incline the accuse root removal of tooth, improve and correct efficiency.

Generally speaking, the utility model discloses think about ingenious, compact structure is reasonable, uses adjustment convenient and fast, and alternative strong has realized that the better help tooth of present correction in-process accomplishes the accuse root motion, has improved and has rescued efficiency.

Drawings

The present invention will be further explained with reference to the following description of the drawings.

FIG. 1 is a front view of a multi-dimensional orthodontic traction device for root control according to the present invention;

FIG. 2 is a middle sectional view of the orthodontic bracket of the present invention;

fig. 3 is a schematic view of the structure of the traction rod of the present invention;

FIG. 4 is a schematic view of the present invention in a use state;

FIG. 5 is a schematic view of the second usage state of the present invention;

description of reference numerals: 1. orthodontic brackets; 2. a draw bar; 3. orthodontic wires; 4. a rubber chain ring; 5. anchorage nails; 6. resin protruding;

101. a first vertical tube; 102. a second standpipe; 103. a third vertical tube;

201. a fixed part; 202. a middle section rod part; 203. a lower section of a towing hook.

Detailed Description

As shown in fig. 1-5, a multi-dimensional orthodontic traction device for root control comprises an orthodontic bracket 1 and a traction rod 2, wherein a plurality of vertical tubes for connecting with the traction rod 2 are arranged on the orthodontic bracket 1, the orthodontic bracket 1 is adhered to the surface of a tooth through an adhesive, an orthodontic wire 3 passes through a groove on the orthodontic bracket 1, the groove is positioned in the middle of the front side surface of the orthodontic bracket, and two ends of the orthodontic wire 3 are positioned on conventional brackets on the surfaces of the teeth on two sides; the top of the traction rod 2 is inserted into a selected vertical pipe according to the correcting position, and the roots of the traction rod 2 are connected together through a rubber chain ring 4.

Specifically, as shown in fig. 2, three vertical tubes are arranged on the orthodontic bracket 1, which are respectively a first vertical tube 101, a second vertical tube 102 and a third vertical tube 103, the second vertical tube 102 is located in the middle and vertically placed, and the first vertical tube 101 and the third vertical tube 103 are obliquely and symmetrically distributed on two sides of the second vertical tube 102.

As shown in fig. 3, the diameters of the first vertical pipe 101, the second vertical pipe 102 and the third vertical pipe 103 are all 0.5mm to 1.0mm, preferably 0.75mm, and the angle between two adjacent vertical pipes is 30 ° to 45 °. Specifically, the orthodontic bracket 1 is movably connected with the traction rod 2, and the direction of a vertical pipe to be inserted can be selected according to specific clinical requirements during use.

Specifically, the traction rod 2 comprises a fixing portion 201, a middle rod portion 202 and a lower section traction hook 203, the fixing portion 201, the middle rod portion 202 and the lower section traction hook 203 are connected into a whole, the fixing portion is close to the end of the bracket, the lower section traction hook 203 is close to the gingival part, and the middle rod portion 202 is located in the hollow cavity of the vertical pipe.

The traction rod 2 is formed by bending a stainless steel wire, and the total length of the traction rod 2 is 10-15 mm.

In one embodiment, the length of the fixing portion 201 is 2mm, the diameter is 0.45mm, the length of the middle rod portion 202 is 3mm, the diameter is 0.7mm, and the length of the lower traction hook is 5mm, and the diameter is 0.8 mm.

In another embodiment, the length of the fixing part is 3mm, the diameter of the fixing part is 0.45mm, the length of the middle section rod part is 4mm, the diameter of the middle section rod part is 0.7mm, and the length of the lower section towing hook is 8mm, and the diameter of the lower section towing hook is 1.0 mm.

According to the data of the third embodiment, the length of the fixing part is 3mm, the diameter of the fixing part is 0.45mm, the length of the middle section rod part is 4mm, the diameter of the middle section rod part is 0.7mm, and the length of the lower section towing hook is 5mm, and the diameter of the lower section towing hook is 1.0 mm.

When the orthodontic bracket is used, as shown in fig. 4, when two teeth opposite to the jaw need to move towards the mesial tooth root and the tooth crown basically does not move or only moves a little, the orthodontic bracket 1 is bonded on the tooth needing to be moved, the lower section traction hook 203 of the traction rod 2 is bent in advance, the fixing part 201 of the traction rod 2 is evenly ground by a slow straight machine, then the lower section traction hook is inserted into a selected vertical tube from the gum end according to the inclined direction of the tooth root, then the forceps is used for bending the fixing part 201 back to perform anti-drop positioning, and the two lower section traction hooks 203 can face to the opposite direction of the movement of the tooth root and hook the two ends of the rubber chain ring 4; wherein the orthodontic wire 3 passes through the groove at the middle position of the orthodontic bracket 1. When the orthodontic bracket and the traction rod are in place, the rubber chain rings with different numerical values are selected for traction according to clinical conditions. At the moment, the lower section traction hook is positioned below the resistance centers of the two teeth, namely the traction force F passes through the lower part of the resistance center P, the rotation moment M generated by the traction force F is clockwise, the original moment of the bracket is also clockwise, and acting force is generated between the two tooth roots mutually, so that the two tooth roots move towards the middle, the tooth crown basically does not move or only moves a little towards the middle, and the purpose of controlling the tooth roots is achieved.

As shown in fig. 5, when a certain tooth needs to perform root control movement, the orthodontic bracket 1 is bonded to the tooth to be moved, the lower section of the traction rod 2 is bent in advance by the traction hook 203, the fixing part 201 of the traction rod 2 is uniformly ground by a slow straight machine, and then the fixing part 201 is inserted into a selected vertical tube from the gum end according to the inclination direction of the tooth root, and then the anti-drop positioning is performed by the forceps back bending fixing part 201; the anchorage pin 5 is implanted into the alveolar bone at a corresponding level far away, and the anchorage pin 5 and a lower-segment traction hook 203 are respectively connected to both ends of the rubber chain ring 4, wherein the orthodontic wire 3 passes through a groove at the middle position of the orthodontic bracket 1. The same principle utilizes the power traction of the anchorage nail 5 to realize the root control movement of the tooth so as to achieve the aim of correction, and other conventional brackets, buccal tubes and the like are bonded conventionally.

In addition, the fixing part 201 is provided with a resin projection 6 for protection, so that the discomfort of the fixing part 201 made of orthodontic wires to the mucous membrane of a patient is reduced. In use, the lower pulling hook 203 is oriented in the opposite direction to the root movement to better hook the rubber grommet 4.

The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims

1. A multi-dimensional orthodontic distraction device for root control, characterized by: the orthodontic bracket is provided with a plurality of vertical tubes connected with the traction rods, the orthodontic bracket is stuck on the surface of teeth through bonding agents, an orthodontic wire penetrates through a groove on the orthodontic bracket, and two ends of the orthodontic wire are positioned on the conventional brackets on the surfaces of the teeth on two sides; the tops of the traction rods are inserted into the selected vertical pipes according to the correcting positions, and the roots of the traction rods are connected together through rubber chain rings.

2. The multi-dimensional orthodontic distraction device for root control of claim 1, wherein: the orthodontic bracket is provided with three vertical pipes, namely a first vertical pipe, a second vertical pipe and a third vertical pipe, wherein the second vertical pipe is positioned in the middle and is vertically placed, and the first vertical pipe and the third vertical pipe are obliquely and symmetrically distributed on two sides of the second vertical pipe.

3. The multi-dimensional orthodontic distraction device for root control of claim 2, wherein: the diameters of the first vertical pipe, the second vertical pipe and the third vertical pipe are all 0.5 mm-1.0 mm, and the angle between every two adjacent vertical pipes is 30-45 degrees.

4. The multi-dimensional orthodontic distraction device for root control of claim 2, wherein: the traction rod comprises a fixing part, a middle rod part and a lower traction hook, the fixing part, the middle rod part and the lower traction hook are connected into a whole, the fixing part is close to the end part of the bracket cutter, the lower traction hook is close to the gum side, and the middle rod part is located in the hollow cavity of the vertical pipe.

5. The multi-dimensional orthodontic distraction device for root control of claim 4, wherein: the traction rod is formed by bending a stainless steel wire, and the total length of the traction rod is 10-15 mm.

6. The multi-dimensional orthodontic distraction device for root control of claim 4, wherein: the length of fixed part is 2mm, and the diameter is 0.45mm, the length of middle section pole portion is 3mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 5mm, and the diameter is 0.8 mm.

7. The multi-dimensional orthodontic distraction device for root control of claim 4, wherein: the length of fixed part is 3mm, and the diameter is 0.45mm, the length of middle section pole portion is 4mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 8mm, and the diameter is 1.0 mm.

8. The multi-dimensional orthodontic distraction device for root control of claim 4, wherein: the length of fixed part is 3mm, and the diameter is 0.45mm, the length of middle section pole portion is 4mm, and the diameter is 0.7mm, the length of hypomere towing pintle is 5mm, and the diameter is 1.0 mm.

9. The multi-dimensional orthodontic distraction device for root control of claim 8, wherein: the fixing part is provided with a resin projection for protection.