Self-locking bracket with variable groove

Abstract

The present invention relates to the field of tooth orthodontic brackets, and in particular to a self-locking bracket with a variable groove, comprising a bracket body, the bracket body being provided with a groove suitable for installing an archwire, the archwire comprising a first archwire and a second archwire, a groove arranged on the side wall of the groove, the groove being suitable for increasing the size in the direction of the groove width, so that the movement range of the first archwire in the direction of the groove width becomes larger; a cover plate arranged above the groove, the cover plate being connected to the bracket body corresponding to one side of the groove. The present invention has a reasonable structural design, so that in the early stage of correction, the groove becomes wider, the clearance between the archwire and the groove is increased, the movement of the archwire in the direction of the groove width is increased, and the teeth are allowed to tilt in the mesiodistal direction to a certain extent, avoiding the deepening of the labial inclination and overbite of the anterior teeth; in the later stage of correction, the width of the groove can be narrowed as needed, and the clearance in the direction of the archwire and the groove width is eliminated, so that the teeth obtain an ideal torque, axial inclination and position, and the precise control of the tooth axial inclination angle and torque angle is achieved.

Description

Technical Field

[0001] The invention relates to the field of tooth orthodontic brackets, in particular to a self-locking bracket with variable grooves. Background Art

[0002] The existing brackets are bonded to the tooth surface. After the harder archwire is placed in the groove of the bracket, the teeth move with the archwire as the track under the action of the correction force. The smaller the clearance between the archwire and the groove, the greater the friction generated. Therefore, the greater the correction force required to move the teeth, resulting in greater consumption of support (teeth that do not want to move are easy to move). Its correction feature is that the teeth tend to move as a whole; on the contrary, the larger the clearance between the archwire and the groove, the smaller the friction generated. Therefore, the smaller the correction force required to move the teeth, the smaller the support consumed (teeth that do not want to move basically do not move). Its feature is that the teeth tend to move tilted (teeth generally move tilted with the root as the axis). After the teeth move tilted, they cooperate with the later vertical root to achieve the purpose of overall movement.

[0003] Both technologies exist in orthodontic clinics, each with its own advantages and disadvantages, and the contradictions are irreconcilable. The former is a representative technology, the straight wire correction technology, which has the advantage of better control over tooth movement, but because of the pre-formed axial inclination and torque, it is easy for the anterior teeth to tilt and deepen the overbite when the teeth are aligned. In many cases, external force and micro screws are required to strengthen the support. It is widely used in orthodontic clinics; the latter is a representative technology, the Tip-Edge technology, which first tilts the crown and then verticalizes the root to achieve overall movement. The advantage is that generally no additional support is required, but the later vertical root and torque control are more complicated, so this technology is less used in clinical practice. Summary of the invention

[0004] The present invention provides a self-locking bracket with a variable groove, which has a reasonable structural design. By improving the bracket structure, the groove is widened in the early stage of correction, the clearance between the archwire and the groove is increased, the movement of the archwire along the groove width direction is increased, and the teeth are allowed to tilt in the mesiodistal direction to a certain extent, avoiding the deepening of the lip inclination and overbite of the anterior teeth, and consuming less support (the teeth that do not want to move are basically immobile); at the same time, the groove depth is shallowed in the early stage of correction, and the movement of the archwire along the groove depth direction is reduced, so that the torsion of the teeth is easy to correct. In the later stage of correction, the width of the groove can be narrowed as needed, and the clearance between the archwire and the groove width direction is eliminated, so that the teeth obtain ideal torque, axial inclination and position, and the precise control of the tooth axial inclination angle and torque angle is achieved, and the orthodontic effect of the teeth is improved, thereby solving the problems existing in the prior art.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a self-ligating bracket with a variable groove, comprising a bracket body, wherein the bracket body is provided with a groove suitable for installing an archwire, wherein the archwire comprises a first archwire and a second archwire, wherein the radial dimension of the first archwire is smaller than the radial dimension of the second archwire,

[0006] A groove is provided on the side wall of the groove, the groove is suitable for increasing the size of the groove in the width direction, so that the movement range of the first arch wire along the groove width direction becomes larger;

[0007] A cover piece is arranged above the groove, the cover piece is connected to the bracket body corresponding to one side of the groove, the cover piece can be turned over along its connection position, the cover piece has a first state and a second state, the cover piece in the first state is suitable for limiting the first arch wire in the groove; the cover piece in the second state is turned over along its connection position to the side wall of the groove, and cooperates with the side wall of the groove to limit the movement of the second arch wire along the width direction of the groove;

[0008] A compensating piece is provided on the bottom surface of the cover plate. When the cover plate is in a first state, the compensating piece is suitable for reducing the movement dimension of the first arch wire along the depth direction of the groove; when the cover plate is in a second state, the compensating piece cooperates with the groove to compensate for the increased dimension of the groove in the width direction of the groove, so as to limit the movement of the second arch wire along the width direction of the groove.

[0009] Preferably, a mounting groove is provided on the groove side wall opposite to the groove, and the mounting groove is suitable for increasing the movement dimension of the first arch wire along the groove width direction, and the groove opening dimension of the mounting groove is smaller than the dimension of the second arch wire along the groove depth direction after entering the groove.

[0010] Preferably, the compensating member is an elastic compensating member, and when the cover plate is located above the groove, the elastic compensating member is elastically deformed after being squeezed by the first arch wire, so that the moving dimension of the first arch wire along the depth direction of the groove is variable.

[0011] Preferably, when the elastic compensating part and the groove are in contact with each other and no elastic deformation occurs, the cover plate protrudes in a direction away from the side wall of the groove; after the cover plate is squeezed by the second arch wire, the elastic compensating part undergoes elastic deformation, and the cover plate moves toward the side wall of the groove until the cover plate and the side wall of the groove are in contact with each other.

[0012] Preferably, the elastic compensation member includes an elastic plate, and the two ends of the elastic plate along the width direction of the groove are connected to the cover plate. The portion between the two connecting ends of the elastic plate is bent to form a channel between the elastic plate and the cover plate for the elastic plate to undergo elastic deformation.

[0013] Preferably, the elastic compensating member comprises an elastic plate, one end portion of the elastic plate along the width direction of the groove is connected to the cover plate, and the elastic plate is arranged at a certain angle to the cover plate along its connection position.

[0014] Preferably, the connection position between the elastic plate and the cover sheet is far away from the connection end between the cover sheet and the bracket body.

[0015] Preferably, the compensating member is a hard compensating member, and after the second arch wire is installed into the groove, the hard compensating member cooperates with the groove to make the position between the cover plate and the side wall of the groove relatively fixed.

[0016] Preferably, the length of the cover plate is substantially the same as the length of the groove, so as to limit the movement of the second arch wire in the groove along the width direction of the groove.

[0017] Preferably, the cover sheet is provided with an elastic bending portion, the elastic bending portion is connected to the bracket body, the bracket body is provided with a ligation wing, and the elastic bending portion is arranged between two ligation wings on the same side.

[0018] The beneficial effect of the above structure of the present invention is that its structural design is reasonable. By improving the bracket structure, the groove is widened in the early stage of correction, the clearance between the archwire and the groove is increased, the movement of the archwire along the groove width direction is increased, and the teeth are allowed to tilt in the mesiodistal direction to a certain extent, avoiding the deepening of the lip inclination and overbite of the anterior teeth, and consuming less support (the teeth that do not want to move are basically immobile); at the same time, the groove depth is shallowed in the early stage of correction, and the movement of the archwire along the groove depth direction is reduced, so that the torsion of the teeth is easy to correct. In the later stage of correction, the width of the groove can be narrowed as needed, and the clearance between the archwire and the groove width direction is eliminated, so that the teeth obtain the ideal torque angle, axial inclination and position, and the precise control of the axial inclination and torque angle of the teeth is achieved, and the orthodontic effect of the teeth is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a side structural schematic diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure after the first arch wire of the present invention is installed.

[0022] Figure 4 It is a schematic diagram of the structure after the second arch wire of the present invention is installed.

[0023] Figure 5 This is a schematic structural diagram of another embodiment of the present invention after the first arch wire is installed.

[0024] Figure 6 This is a schematic structural diagram of another embodiment of the present invention after the second arch wire is installed.

[0025] Figure 7 It is a schematic structural diagram of another elastic plate after the first arch wire of the present invention is installed.

[0026] Figure 8 It is a schematic structural diagram of another elastic plate after the second arch wire of the present invention is installed.

[0027] Fig. 9 It is a structural schematic diagram of the process of the first arch wire entering the groove of the present invention.

[0028] In the figure, 1, bracket body; 2, groove; 3, first arch wire; 4, second arch wire; 5, groove; 6, cover plate; 7, compensation part; 701, elastic compensation part; 702, hard compensation part; 8, mounting groove; 9, channel; 10, elastic bending part; 11, ligation wing; 12, elastic plate. DETAILED DESCRIPTION

[0029] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0030] like Figure 1-9As shown, a self-ligating bracket with a variable groove comprises a bracket body 1, wherein the bracket body 1 is provided with a groove 2 suitable for installing an archwire, wherein the archwire comprises a first archwire 3 and a second archwire 4, wherein the radial dimension of the first archwire 3 is smaller than the radial dimension of the second archwire 4, and in order to realize the variable groove 2 of the self-ligating bracket, a groove 5 is provided on the side wall of the groove 2, wherein the groove 5 is suitable for increasing the dimension in the width direction of the groove 2, so that the movement range of the first archwire 3 along the width direction of the groove 2 becomes larger; a cover sheet 6 is provided above the groove 2, wherein the cover sheet 6 is connected to the bracket body 1 corresponding to one side of the groove 5, and the cover sheet 6 can be turned over along its connection position, and the cover sheet 6 has a first The first state and the second state, the cover piece 6 in the first state is suitable for limiting the first arch wire 3 in the groove 2; the cover piece 6 in the second state is flipped along its connection position to the side wall of the groove 2, and cooperates with the side wall of the groove 2 to limit the movement of the second arch wire 4 along the width direction of the groove 2; a compensating piece 7 is provided on the bottom surface of the cover piece 6, and when the cover piece 6 is in the first state, the compensating piece 7 is suitable for reducing the movement size of the first arch wire 3 along the depth direction of the groove 2; when the cover piece 6 is in the second state, the compensating piece 7 cooperates with the groove 5 to compensate for the increased size of the groove 5 in the width direction of the groove 2, so as to limit the movement of the second arch wire 4 along the width direction of the groove 2. During use, when the cover plate 6 is in the first state (i.e., the early stage of orthodontic treatment), the groove 2 becomes wider, the clearance between the first arch wire 3 and the groove 2 increases, and the movement of the first arch wire 3 along the width direction of the groove 2 is increased, allowing the teeth to tilt in the mesiodistal direction to a certain extent, avoiding the deepening of the labial inclination and overbite of the anterior teeth, and consuming less support (the teeth that do not want to move are basically immobile); at the same time, in the first state of the cover plate 6, the depth of the groove 2 becomes shallower due to the compensation piece 7, which can reduce the movement of the first arch wire 3 along the depth direction of the groove 2, making it easy to correct the torsion of the teeth. In the second state (i.e., the late stage of orthodontic treatment), the cover plate 6 can narrow the width of the groove 2 as needed, eliminate the clearance between the second arch wire 4 and the width direction of the groove 2, so that the teeth obtain the ideal torque angle, axial inclination and position, realize the precise control of the axial inclination and torque angle of the teeth, and improve the orthodontic effect of the teeth.

[0031] It is worth mentioning that the specific shape of the groove 5 can be set arbitrarily according to the actual processing and use conditions, as long as it can play a role in expanding the movement size of the first arch wire 3 along the width direction of the groove 2, and the specific shape of the compensation part 7 is set according to the situation of the groove 5, as long as it can compensate for the increased size of the groove 5 in the width direction of the groove 2.

[0032] In a preferred embodiment, a mounting groove 8 is provided on the side wall of the groove 2 opposite to the groove 5, and the mounting groove 8 is suitable for increasing the moving dimension of the first arch wire 3 along the width direction of the groove 2, and the notch dimension of the mounting groove 8 is smaller than the dimension of the second arch wire 4 along the depth direction of the groove 2 after entering the groove 2. The mounting groove 8 is provided to correspond to the groove 5, and the moving dimension of the first arch wire 3 along the width direction of the groove 2 is increased again, and the adaptability of the teeth to tilt in the mesiodistal direction is higher, and the lip tilt of the anterior teeth and the deepening of the overbite are further avoided, and the effect is better.

[0033] It is worth mentioning that Fig. 9 As shown, when the first arch wire 3 is installed in the groove 2, the first arch wire 3 squeezes the cover piece 6 to flip downward. When the first arch wire 3 moves downward to the installation groove 8, the first arch wire 3 can slide into the installation groove 8. At this time, because the first arch wire 3 enters the installation groove 8, the cover piece 6 and the first arch wire 3 are in a tangent state, so that the cover piece 6 can rebound to the initial state. After the cover piece 6 rebounds, it loses the restricting effect on the first arch wire 3, and the first arch wire 3 enters the groove.

[0034] In a preferred embodiment, the compensating member 7 is an elastic compensating member 701. When the cover plate 6 is located above the groove 2, the elastic compensating member 701 is elastically deformed after being squeezed by the first arch wire 3, so that the moving dimension of the first arch wire 3 along the depth direction of the groove 2 is variable. After the elastic compensating member 701 is adopted, the moving dimension of the first arch wire 3 along the depth direction of the groove 2 is reduced, and its movement is restricted. Moreover, because the elastic compensating member 701 can be elastically deformed after being squeezed by the first arch wire 3, it is equivalent to having a buffering effect on the pulling force of the first arch wire 3, making the force on the teeth safer and softer, and having a variable effect on the moving dimension of the first arch wire 3 in the depth direction of the groove 2, making it more adaptable and more effective.

[0035] In a preferred embodiment, when the elastic compensating member 701 and the groove 5 are in contact and no elastic deformation occurs, the cover piece 6 protrudes in a direction away from the side wall of the groove 2; after the cover piece 6 is squeezed by the second archwire 4, the elastic compensating member 701 is elastically deformed, and the cover piece 6 moves toward the side wall of the groove 2 until the cover piece 6 and the side wall of the groove 2 are in contact. Because the pre-torque angle of the bracket cannot be accurately expressed in the prior art, orthodontists usually need to bend the archwire to adjust the torque appropriately, but it is difficult to accurately control the degree of the archwire torque clinically, which is easy to cause either no torque force or excessive torque that easily causes the risk of root absorption, as shown in the attached figure. Figure 4 As shown, in this solution, when the cover plate 6 is in the second state, after the second arch wire 4 is embedded in the groove 2, the elastic compensation part 701 is stuck in the groove 5, so that the cover plate 6 cooperates with the side wall of the groove 2 to directly clamp the second arch wire 4, so that the torque angle expression of the second arch wire 4 is softer, safer and more efficient, which reduces the difficulty of arch wire bending for orthodontists, reduces the difficulty of operation, and alleviates the pain and side effects of patients.

[0036] In a preferred embodiment, the elastic compensating member 701 includes an elastic plate 12, and the two ends of the elastic plate 12 along the width direction of the groove 2 are connected to the cover plate 6, and the portion between the two connecting ends of the elastic plate 12 is bent, so that a channel 9 for elastic deformation of the elastic plate 12 is formed between the elastic plate 12 and the cover plate 6. After the elastic plate 12 is squeezed, its shape changes elastically, that is, the shape of the channel changes, and the two ends of the elastic plate 12 are fixed to form the channel 9 with the cover plate 6, so that the elastic compensating member 701 is relatively stable under the action of external force, and the elastic deformation and recovery capabilities are more stable, the reliability is high, and the service life is long.

[0037] In a preferred embodiment, as shown in the attached Figure 7 As shown, the elastic compensating member includes an elastic plate 12, one end of the elastic plate 12 along the groove width direction is connected to the cover plate, and the elastic plate 12 is arranged at a certain angle with the cover plate along its connection position. The elastic plate 12 is connected to the cover plate at one end, which can also achieve the function of limiting the first archwire and compensating the groove. In actual use, the stability and reliability of the structure are weaker than the above-mentioned two-end fixed (i.e., channel form), but it also has the conditions for implementation.

[0038] In a preferred embodiment, as shown in the attached Figure 8 As shown, the connection position of the elastic plate 12 and the cover plate 6 is far away from the connection end of the cover plate 6 and the bracket body 1. Considering the stress of the elastic plate 12 connected at one end, the connection position of the elastic plate 12 and the cover plate 6 is deliberately set at a position far away from the connection end of the cover plate 6 and the bracket body 1; at this time, the elastic plate 12 can not only form a good restriction and buffering effect on the first arch wire 3, but also can effectively compensate for the groove 5 when the cover plate 6 is in the second state, so that the position of the cover plate 6 is determined.

[0039] In a preferred embodiment, the compensating member 7 is a hard compensating member 702. The hard compensating member 702 does not undergo elastic deformation after being squeezed by the first arch wire 3 or the second arch wire 4. After the second arch wire 4 is installed into the groove 2, the hard compensating member 702 cooperates with the groove 5 to relatively fix the position between the cover plate 6 and the side wall of the groove 2. Figure 6 As shown, when the cover piece 6 is in the second state, the second arch wire 4 is embedded in the groove 2 and is clamped into the groove 5 through the hard compensation piece 702, so that the position of the cover piece 6 is fixed, and the cover piece 6 cooperates with the side wall of the groove 2 to directly clamp the second arch wire 4, so that the torque angle expression of the second arch wire 4 is softer, safer and more efficient.

[0040] It is understandable that if Figure 5As shown, when the cover plate 6 is in the first state, the hard compensating member 702 can reduce the movement dimension of the first arch wire 3 along the depth direction of the groove 2, so that the movement depth of the first arch wire 3 in the groove 2 becomes shallower, making the torsion of the tooth easier to correct.

[0041] In a preferred embodiment, the length of the cover piece 3 is substantially the same as the length of the groove 2, so as to limit the movement of the second arch wire 4 in the groove 2 along the width direction of the groove 2. This avoids the cover piece 3 being insufficient in length to cover the length direction of the groove 2, resulting in the second arch wire 4 being offset from the uncovered position between the cover piece 6 and the groove 2 along the length direction, thereby affecting the accurate expression of the torque angle; the cover piece 6 completely covers the groove 2 in the length direction, which can effectively limit the movement of the second arch wire 4 along the width direction of the groove 2, thereby ensuring the accurate expression of the torque angle.

[0042] In a preferred embodiment, the cover sheet 6 is provided with an elastic bending portion 10, which is connected to the bracket body 1, and the bracket body 1 is provided with a ligation wing 11, and the elastic bending portion 10 is arranged between two ligation wings 11 on the same side. The elastic bending portion 10 is connected to the bracket body 1, and when the first arch wire 3 enters the groove 2, the cover sheet 6 needs to be squeezed, and the cover sheet 6 is turned over along the elastic bending portion 10, and the first arch wire 3 enters the groove 2 after passing through the cover sheet 6. After the elastic deformation, the cover sheet 6 returns to the initial first state position, and after the first arch wire 3 enters the groove 2, the cover sheet 6 can limit the movement range of the first arch wire 3 along the depth direction of the groove 2. When the force of the first arch wire 3 acting on the cover sheet 6 is too large (reaching the upper limit of the tension that the teeth can bear), the cover sheet 6 will rotate outward along the elastic bending portion 10, and the first arch wire 3 will automatically pop out to protect the teeth; when the second arch wire 4 squeezes the cover sheet 6 and embeds into the groove 2, the cover sheet 6 is turned over to the side wall position of the groove 2 along the elastic bending portion 10. Specifically, the elastic bending portion 10 and the bracket body 1 are welded.

[0043] The above specific implementation manner cannot be used as a limitation on the protection scope of the present invention. For those skilled in the art, any substitution, improvement or change made to the implementation manner of the present invention falls within the protection scope of the present invention.

[0044] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A self-ligating bracket with a variable groove, comprising a bracket body, wherein the bracket body is provided with a groove suitable for installing an archwire, The arch wire comprises a first arch wire and a second arch wire, wherein the radial dimension of the first arch wire is smaller than the radial dimension of the second arch wire, and is characterized in that: A groove is provided on the side wall of the groove, the groove is suitable for increasing the size of the groove in the width direction, so that the movement range of the first arch wire along the groove width direction becomes larger; A cover sheet is arranged above the groove, the cover sheet is connected to the bracket body corresponding to one side of the groove, the cover sheet can be turned over along its connection position, the cover sheet has a first state and a second state, the cover sheet in the first state is suitable for limiting the first arch wire in the groove; the cover sheet in the second state is turned over along its connection position to the side wall of the groove, and cooperates with the side wall of the groove to limit the movement of the second arch wire along the width direction of the groove; A compensating piece is provided on the bottom surface of the cover plate. When the cover plate is in a first state, the compensating piece is suitable for reducing the moving dimension of the first arch wire along the depth direction of the groove; when the cover plate is in a second state, the compensating piece cooperates with the groove to compensate for the increased dimension of the groove in the width direction of the groove, so as to limit the movement of the second arch wire along the width direction of the groove; A mounting groove is provided on the groove side wall opposite to the groove, and the mounting groove is suitable for increasing the movement dimension of the first arch wire along the groove width direction, and the groove opening dimension of the mounting groove is smaller than the dimension of the second arch wire along the groove depth direction after entering the groove.

2. A self-ligating bracket with a variable groove according to claim 1, characterized in that: The compensating member is an elastic compensating member. When the cover plate is located above the groove, the elastic compensating member is elastically deformed after being squeezed by the first arch wire, so that the moving dimension of the first arch wire along the depth direction of the groove is variable.

3. A self-locking bracket with a variable groove according to claim 2, characterized in that: When the elastic compensating part and the groove are in contact and no elastic deformation occurs, the cover plate protrudes in a direction away from the groove side wall; after the cover plate is squeezed by the second arch wire, the elastic compensating part undergoes elastic deformation, and the cover plate moves toward the groove side wall until the cover plate and the groove side wall are in contact.

4. A self-ligating bracket with a variable groove according to claim 2 or 3, characterized in that: The elastic compensating member comprises an elastic plate, the two ends of the elastic plate along the width direction of the groove are connected to the cover plate, and the portion between the two connecting ends of the elastic plate is bent so that a channel is formed between the elastic plate and the cover plate for the elastic plate to undergo elastic deformation.

5. A self-ligating bracket with a variable groove according to claim 2 or 3, characterized in that: The elastic compensating member comprises an elastic plate, one end of which along the width direction of the groove is connected to the cover plate, and the elastic plate is arranged at a certain angle with the cover plate along its connection position.

6. A self-ligating bracket with a variable groove according to claim 5, characterized in that: The connection position between the elastic plate and the cover sheet is far away from the connection end between the cover sheet and the bracket body.

7. The self-ligating bracket with variable groove according to claim 1, characterized in that: The compensating part is a hard compensating part, and the hard compensating part does not undergo elastic deformation after being squeezed by the first arch wire or the second arch wire. After the second arch wire is installed into the groove, the hard compensating part and the groove cooperate to make the position between the cover plate and the side wall of the groove relatively fixed.

8. The self-ligating bracket with variable groove according to claim 1, characterized in that: The length of the cover piece is substantially the same as the length of the groove so as to limit the movement of the second arch wire in the groove along the width direction of the groove.

9. The self-ligating bracket with variable groove according to claim 1, characterized in that: The cover sheet is provided with an elastic bending portion, the elastic bending portion is connected to the bracket body, the bracket body is provided with a ligation wing, and the elastic bending portion is arranged between two ligation wings on the same side.

Images