A multi-dimensional orthodontic traction device for root control

Abstract

The present invention discloses a multi-dimensional orthodontic traction device for root control, which includes an orthodontic bracket and a traction rod. A plurality of vertical tubes for connecting with the traction rod are arranged on the orthodontic bracket. The orthodontic bracket is pasted on the tooth surface through an adhesive. An orthodontic wire passes through the slot groove on the orthodontic bracket, and both ends of the orthodontic wire are positioned on the conventional brackets on the tooth surfaces on both sides; the top of the traction rod is inserted into the selected vertical tube according to the treatment position, and the roots of the traction rods are connected together through rubber chain loops. The present invention has a clever concept, a compact and reasonable structure, is convenient and fast to use and adjust, has strong selectivity, realizes better assistance for teeth to complete root control movement during the treatment process, and improves the treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the field of oral orthodontics, and in particular to a multi-dimensional orthodontic traction device for root control. Background Art

[0002] At present, the common method of correcting teeth in clinical practice is to stick orthodontic brackets on teeth, pass the archwire through the groove in the middle of the orthodontic bracket, and use the elastic deformation of the archwire after entering the groove and the elastic force generated by the elastic chain ring placed between the orthodontic brackets to drive the orthodontic brackets to apply force to the crowns to align the teeth. However, for teeth that are severely tilted on both sides of the missing teeth due to long-term tooth loss, the force directly acting on the crowns cannot effectively pull the roots of the tilted teeth to the side of the gap.

[0003] The center of resistance is the center of the resultant force on a tooth when it is in a balanced state. It is a balance point when the tooth is in a static state. When an external force acts on this point, the tooth only moves parallel to the direction of the force without rotating. The position of the center of resistance of the tooth varies depending on the length, shape, and height of the root. The center of resistance of a single-rooted tooth is on the long axis of the tooth, approximately at the junction of the cervical 1 / 3 and the middle 1 / 3 of the root. The center of resistance of a multi-rooted tooth is approximately 1 to 2 mm below the root bifurcation. The center of rotation refers to the point at which all points on an object rotate around the center of a concentric circle when an object rotates under the action of an external force. The center of rotation is the center of rotation. The position of the center of rotation is related to the way the tooth moves. Its position changes with the ratio of the torque and force applied to the tooth, that is, the M / F value. In orthodontic treatment, the types of tooth movement are usually divided into tilting movement, overall movement, root control movement (torque movement), vertical movement, and rotational movement. When a tooth is missing for a long time, the crowns of the teeth on both sides of the missing tooth tend to the gap, but the roots face in the opposite direction. To close the gap, the roots must first overcome the resistance of the alveolar bone and swing toward the gap. Root-controlled movement means that the crown remains basically stationary, while the roots are mainly moved. During root-controlled movement, the center of rotation is located at the cutting edge of the crown. Clinically, it is impossible to apply force directly to the root. After the crown is subjected to force, the tooth is centered on the center of resistance. The directions of movement of the crown and root are likely to be opposite. Therefore, it is not easy to achieve root-controlled movement. Instead, the teeth move tilted to close the gap.

[0004] Therefore, how to develop a multi-dimensional orthodontic traction device for root control to achieve better advantages such as helping the root movement of teeth during the correction process and improving the correction efficiency has become a technical problem that needs to be urgently solved by technical personnel in this field. Summary of the invention

[0005] The object of the present invention is to provide a multi-dimensional orthodontic traction device for root control, which has a wide range of applications, a simple and clear structure, is easy to master, can be adjusted at any time according to the oral conditions of patients, has good patient comfort, and can better assist the root control movement of teeth during the orthodontic treatment, thereby improving the orthodontic efficiency and other advantages.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A multi-dimensional orthodontic traction device for root control of the present invention includes an orthodontic bracket and a traction rod. A plurality of vertical tubes for connecting with the traction rod are arranged on the orthodontic bracket. The orthodontic bracket is pasted on the tooth surface through an adhesive. An orthodontic wire passes through the slot groove on the orthodontic bracket, and both ends of the orthodontic wire are positioned on the conventional brackets on the surfaces of the teeth on both sides. The top of the traction rod is inserted into the selected vertical tube according to the orthodontic position, and the roots of the traction rods are connected together through rubber chain loops.

[0008] Further, three vertical tubes are arranged on the orthodontic bracket, namely a first vertical tube, a second vertical tube and a third vertical tube. The second vertical tube is located in the middle and is vertically placed. The first vertical tube and the third vertical tube are inclined and symmetrically distributed on both sides of the second vertical tube.

[0009] Further, the diameters of the first vertical tube, the second vertical tube and the third vertical tube are all 0.5 mm to 1.0 mm, and the angle between two adjacent vertical tubes is 30° to 45°.

[0010] Further, the traction rod includes 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 as a whole. The fixing part is close to the incisal end of the bracket, the lower traction hook is close to the gingival side, and the middle rod part is located in the hollow cavity of the vertical tube.

[0011] Further, the traction rod is bent by a stainless steel wire, and the total length of the traction rod is 10 to 15 mm.

[0012] Further, the length of the fixing part is 2 mm, and the diameter is 0.45 mm. The length of the middle rod part is 3 mm, and the diameter is 0.7 mm. The length of the lower traction hook is 5 mm, and the diameter is 0.8 mm.

[0013] Further, the length of the fixing part is 3 mm, and the diameter is 0.45 mm. The length of the middle rod part is 4 mm, and the diameter is 0.7 mm. The length of the lower traction hook is 8 mm, and the diameter is 1.0 mm.

[0014] Further, the length of the fixing part is 3 mm, the diameter is 0.45 mm, the length of the middle rod part is 4 mm, the diameter is 0.7 mm, and the length of the lower traction hook is 5 mm, the diameter is 1.0 mm.

[0015] Further, when two teeth opposite to each other in the same jaw both need to move the tooth roots mesially and the crowns of the teeth remain basically stationary or only move slightly, bond the orthodontic bracket to the teeth to be moved, bend the lower traction hook of the traction rod in advance, evenly grind the fixing part of the traction rod with a slow straightening machine, then insert it into the vertical tube from the gingival end according to the direction of the root inclination, and then bend the fixing part back with pliers. The directions of the two lower traction hooks can face the opposite direction of the root movement and hook the two ends of the rubber chain loop;

[0016] When root control movement is required for a certain tooth, bond the orthodontic bracket to the tooth to be moved, bend the lower traction hook of the traction rod in advance, evenly grind the fixing part of the traction rod with a slow straightening machine, then insert it into the vertical tube from the gingival end according to the direction of the root inclination, and then bend the fixing part back with pliers. Implant the anchorage screw into the alveolar bone at the corresponding level in the distal, and connect the anchorage screw and a lower traction hook to the two ends of the rubber chain loop respectively.

[0017] Further, resin protrusions for protection are provided on the fixing part.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0019] 1) The orthodontic bracket designed in the present invention has a vertical tube design in three directions, and the connection between the orthodontic bracket and the traction rod part is an active connection. The vertical tube design in three different directions has strong selectivity, can control the movement of teeth in multiple dimensions, and has a wide range of applications.

[0020] 2) The design structure of the present invention is simple and clear, which is easy for novice orthodontic doctors to master and use. The foreign body sensation of the patient when placed in the mouth is not obvious, and the comfort is better.

[0021] 3) The specifications and positions of the traction rod can be adjusted at any time according to the actual situation of the patient's oral cavity.

[0022] 4) The present invention can well perform root control movement of inclined teeth and improve the treatment efficiency.

[0023] Generally speaking, the present invention has a clever concept, a compact and reasonable structure, is convenient and fast to use and adjust, has strong selectivity, realizes better assistance for teeth to complete root control movement in the current treatment process, and improves the treatment efficiency. Description of the Drawings

[0024] The present invention will be further described below in conjunction with the description of the drawings.

[0025] Figure 1Front view of the multi-dimensional orthodontic traction device for root control of the present invention;

[0026] Figure 2 Middle cross-sectional view of the orthodontic bracket of the present invention;

[0027] Figure 3 Schematic structural diagram of the traction rod of the present invention;

[0028] Figure 4 Schematic diagram of the first use state of the present invention;

[0029] Figure 5 Schematic diagram of the second use state of the present invention;

[0030] Explanation of reference numerals: 1, orthodontic bracket; 2, traction rod; 3, orthodontic wire; 4, rubber chain ring; 5, anchorage screw; 6, resin projection;

[0031] 101, first vertical tube; 102, second vertical tube; 103, third vertical tube;

[0032] 201, fixing part; 202, middle rod part; 203, lower traction hook. Detailed implementation manners

[0033] As Figures 1-5 shown, a multi-dimensional orthodontic traction device for root control includes an orthodontic bracket 1 and a traction rod 2. A plurality of vertical tubes for connecting with the traction rod 2 are arranged on the orthodontic bracket 1. The orthodontic bracket 1 is pasted on the tooth surface through an adhesive. An orthodontic wire 3 passes through the groove on the orthodontic bracket 1. The groove is located in the middle of the front side of the orthodontic bracket. The two ends of the orthodontic wire 3 are positioned on the conventional brackets on the surfaces of the teeth on both sides; the top of the traction rod 2 is inserted into the selected vertical tube according to the treatment position, and the roots of the traction rods 2 are connected together through rubber chain rings 4.

[0034] Specifically, as Figure 2 shown, three vertical tubes are arranged on the orthodontic bracket 1, namely 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 is vertically placed. The first vertical tube 101 and the third vertical tube 103 are inclined and symmetrically distributed on both sides of the second vertical tube 102.

[0035] As Figure 3 shown, the diameters of the first vertical tube 101, the second vertical tube 102 and the third vertical tube 103 are all 0.5 mm to 1.0 mm, and 0.75 mm is preferably selected. The angle between two adjacent vertical tubes is 30° to 45°. Specifically, the orthodontic bracket 1 and the traction rod 2 are movably connected, and the direction of the vertical tube to be inserted can be selected according to the specific clinical needs during use.

[0036] Specifically, the traction rod 2 includes a fixing part 201, a middle rod part 202, and a lower traction hook 203. The fixing part 201, the middle rod part 202, and the lower traction hook 203 are connected as a whole. The fixing part is close to the incisal end of the bracket, the lower traction hook 203 is close to the gingival side, and the middle rod part 202 is located within the hollow cavity of the vertical tube.

[0037] The traction rod 2 is bent from stainless steel wire, and the total length of the traction rod 2 is 10 - 15 mm.

[0038] In one embodiment, the length of the fixing part 201 is 2 mm, the diameter is 0.45 mm, the length of the middle rod part 202 is 3 mm, the diameter is 0.7 mm, the length of the lower traction hook is 5 mm, and the diameter is 0.8 mm.

[0039] In another embodiment, the length of the fixing part is 3 mm, the diameter is 0.45 mm, the length of the middle rod part is 4 mm, the diameter is 0.7 mm, the length of the lower traction hook is 8 mm, and the diameter is 1.0 mm.

[0040] Data of the third embodiment: the length of the fixing part is 3 mm, the diameter is 0.45 mm, the length of the middle rod part is 4 mm, the diameter is 0.7 mm, the length of the lower traction hook is 5 mm, and the diameter is 1.0 mm.

[0041] During use, as Figure 4 shown, when both of the two teeth opposite to each other in the same jaw need to move the tooth roots mesially, and the crowns of the teeth remain basically stationary or only move slightly, bond the orthodontic bracket 1 to the teeth that need to be moved. Bend the lower traction hook 203 of the traction rod 2 in advance, evenly grind the fixing part 201 of the traction rod 2 with a slow straightening machine, then insert the fixing part 201 into the selected vertical tube from the gingival end according to the direction of the root inclination, and then use pliers to bend the fixing part 201 back for anti - detachment positioning. The directions of the two lower traction hooks 203 can face the opposite direction of the root movement and hook the two ends of the rubber chain 4; the orthodontic wire 3 passes through the groove in the middle position of the orthodontic bracket 1. When the orthodontic bracket and the traction rod part are both in place, select rubber chains with different values for traction according to the clinical situation. At this time, the lower traction hook is located below the resistance centers of the two teeth, that is, the traction force F passes below the resistance center P. The rotational moment M generated by the traction force F is in the clockwise direction, and the original moment of the bracket is also in the clockwise direction. Mutual forces are generated between the two tooth roots, causing both tooth roots to move mesially, and the crowns of the teeth remain basically stationary or only move slightly distally, thus achieving the purpose of root control.

[0042] As Figure 5As shown, when root control movement is required for a certain tooth, the orthodontic bracket 1 is bonded to the tooth to be moved. The lower traction hook 203 of the traction rod 2 is bent in advance. The fixing part 201 of the traction rod 2 is evenly ground thin with a slow straightening machine, and then inserted into the selected vertical tube from the gingival end according to the direction of the root inclination. Then, the fixing part 201 is bent back with pliers for anti - detachment positioning. The anchorage screw 5 is implanted into the alveolar bone at the corresponding distal horizontal position. The anchorage screw 5 and a lower traction hook 203 are respectively connected to both ends of the rubber chain 4. Among them, the orthodontic wire 3 passes through the groove in the middle position of the orthodontic bracket 1. Using the same principle, the force of the anchorage screw 5 is used for traction to achieve the root control movement of the tooth and reach the correction purpose. The rest of the conventional brackets, buccal tubes, etc. are bonded conventionally.

[0043] In addition, a resin protrusion 6 for protection is provided on the fixing part 201 to reduce the discomfort of the patient's mucosa caused by the orthodontic wire forming the fixing part 201. During use, the direction of the lower traction hook 203 faces the opposite direction of the root movement to better hook the rubber chain 4.

[0044] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-dimensional orthodontic traction device for root control, characterized in that: It includes an orthodontic bracket and a traction rod. Multiple vertical tubes for connecting with the traction rod are arranged on the orthodontic bracket. The orthodontic bracket is pasted on the tooth surface by an adhesive. An orthodontic wire passes through the slot groove on the orthodontic bracket, and both ends of the orthodontic wire are positioned on the conventional brackets on the surfaces of the teeth on both sides; the top of the traction rod is inserted into the selected vertical tube according to the treatment position, and the roots of the traction rods are connected together by rubber chain loops; Three vertical tubes are arranged on the orthodontic bracket, namely a first vertical tube, a second vertical tube and a third vertical tube. The second vertical tube is located in the middle and is vertically placed. The first vertical tube and the third vertical tube are inclined and symmetrically distributed on both sides of the second vertical tube; The diameters of the first vertical tube, the second vertical tube and the third vertical tube are all 0.5 mm to 1.0 mm, and the angle between two adjacent vertical tubes is 30° to 45°; The traction rod includes three parts: 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 as a whole. The fixing part is close to the incisal end of the bracket, the lower traction hook is close to the gingival side, and the middle rod part is located in the hollow cavity of the vertical tube.

2. The multi-dimensional orthodontic traction device for root control according to claim 1, wherein: The traction rod is bent by a stainless steel wire, and the total length of the traction rod is 10 - 15 mm.

3. The multi-dimensional orthodontic traction device for root control according to claim 1, wherein: The length of the fixing part is 2 mm, and the diameter is 0.45 mm. The length of the middle rod part is 3 mm, and the diameter is 0.7 mm. The length of the lower traction hook is 5 mm, and the diameter is 0.8 mm.

4. The multi-dimensional orthodontic traction device for root control according to claim 1, characterized in that: The length of the fixing part is 3 mm, and the diameter is 0.45 mm. The length of the middle rod part is 4 mm, and the diameter is 0.7 mm. The length of the lower traction hook is 8 mm, and the diameter is 1.0 mm.

5. The multi-dimensional orthodontic traction device for root control according to claim 1, characterized in that: The length of the fixing part is 3 mm, and the diameter is 0.45 mm. The length of the middle rod part is 4 mm, and the diameter is 0.7 mm. The length of the lower traction hook is 5 mm, and the diameter is 1.0 mm.

6. The multi-dimensional orthodontic traction device for root control according to claim 1, characterized in that: When both of the two opposing teeth in the same jaw need to move the tooth roots mesially and the crowns of the teeth basically do not move or only move slightly, bond the orthodontic bracket to the teeth that need to be moved. Bend the lower traction hook of the traction rod in advance, evenly grind the fixing part of the traction rod with a slow straightening machine, then insert it into the vertical tube from the gingival end according to the direction of the root inclination, and then bend the fixing part back with pliers. The directions of the two lower traction hooks can face the opposite direction of the root movement and hook the two ends of the rubber chain loop; When a certain tooth needs to perform root control movement, bond the orthodontic bracket to the tooth that needs to be moved. Bend the lower traction hook of the traction rod in advance, evenly grind the fixing part of the traction rod with a slow straightening machine, then insert it into the vertical tube from the gingival end according to the direction of the root inclination, and then bend the fixing part back with pliers. Implant the anchorage screw into the alveolar bone at the corresponding distal horizontal position. The anchorage screw and a lower traction hook are respectively connected to the two ends of the rubber chain loop.

7. The multi-dimensional orthodontic traction device for root control according to claim 6, characterized in that: A resin protrusion for protection is arranged on the fixing part.

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