Lingual brackets

Abstract

The lingual bracket includes a bracket base (1), bracket wings (2), and a spring (3). The bracket base (1) has a top surface with a fixed wing (11) at one end and an auxiliary tube (12) at the other end, and a bottom surface with a non-slip coupling surface (13). The bracket wings (2) have insertion legs (21) and wing portions (22) and can be positioned on the fixed wings (11) by the springs (3) sleeved in the insertion legs (21). A longitudinal groove (111) is formed along the central axis of the fixed wings (11) of the bracket base (1). A horizontal groove (112) is formed on the rear end surface of the fixed wings (11). The insertion legs of the bracket wings (2) have a width equal to the width of the longitudinal groove (111) and can be positioned within the longitudinal groove (111). A wide extension portion (23) is formed at the joint between the insertion leg (21) and the wing portions (22). When the insertion leg (21) is placed in the longitudinal groove (111) and pushed forward by the spring (3), the wide extension (23) is inserted into the transverse groove (112) to form a positioning structure. The two intersecting grooves in the bracket base (1) are used to form a restraint for the bracket wings (2), enabling the features of an original design, simple structure, easy processing, and convenient clinical operation.

Description

[Technical Field]

[0001] The present disclosure relates to the field of orthodontics, and more particularly to lingual brackets, particularly those in which positioning is achieved by spring pretension and continuous corrective force is generated by the spring. [Background technology]

[0002] Patent document CN201010262798.9 discloses a lingual bracket comprising a bracket body and a movable wing. The bracket body is characterized by comprising a bracket base with a non-slip pattern on its underside and a fixed wing integrally protruding from the end of the bracket base, with a through-hole along the central axis of the fixed wing. The movable wing has an archwire hook at one end and a fixed portion at the other end. A spring is sleeved where the end of the fixed portion of the movable wing passes through the through-hole of the fixed wing, with its end abutting the fixed wing and its other end located in the fixed portion of the movable wing. With this structure, the spring can be loaded to form a biasing relationship only after the fixed portion of the movable wing passes through the through-hole. The fixed portion of other structures allows for relatively cumbersome operation in clinical practice, except for solutions for outward bending. Furthermore, solutions for outward bending of the fixed portion are also limited by the bracket material. As a result, clinically, there is a drawback in that breakage often occurs during bending.

[0003] To overcome these shortcomings of the prior art, the question becomes how to provide an easily assembled bracket solution. Summary of the Invention [Problem to be solved by the invention]

[0004] It is an object of the present disclosure to design a lingual bracket in which the bracket wings are constrained by the bracket base by perpendicular longitudinal and transverse grooves in cooperation with a spring. [Means for solving the problem]

[0005] The problem of the present disclosure is solved as follows. A lingual bracket includes a bracket base, bracket wings, and a spring. The bracket base has a top surface with a fixed wing at one end and an auxiliary tube at the other end, and a bottom surface with a non-slip coupling surface. The bracket wings have an insertion leg and a wing portion, and can be positioned relative to the fixed wing portion by a spring sleeved in the insertion leg. A longitudinal groove is formed along the central axis of the fixed wing. A lateral groove is formed on the rear end surface of the fixed wing. The insertion leg has a width equal to that of the longitudinal groove and can be positioned within the longitudinal groove. A wide extension portion is formed at the junction between the insertion leg and the wing portion. When the insertion leg is positioned within the longitudinal groove and pushed forward by the spring, the wide extension portion is inserted into the lateral groove, forming a positioning structure.

[0006] In one embodiment, the upper surface of the bracket base forms a first arcuate surface between the auxiliary tube and the fixed wing, and at least the lower surface of the lateral groove forms a second arcuate surface. The first arcuate surface and the second arcuate surface have the same center point. The non-slip coupling surface is biased toward the end of the auxiliary tube and forms a raised arc at the end of the fixed wing. When assembled in place, the mating surfaces of the bracket wing that mate with the bracket base form an arcuate surface structure that has the same center point as the first arcuate surface.

[0007] In one embodiment, the second arcuate surface of the bracket base has a radius smaller than the radius of the first arcuate surface by at least the diameter of the spring.

[0008] In one aspect, the securing wing has an arched top portion and includes a tying wing in a forward facing direction, the wing portion including a cap that fits over the arched top in a forward facing direction and a tying hook in a downward facing direction.

[0009] In one aspect, an angular slot is provided between the cap and the wide extension to accommodate the archwire.

[0010] In one embodiment, the bracket wing is machined to have an archwire slot on the posterior side of the cap, the archwire slot having an anterior slot surface and a posterior slot surface that are arcuate surfaces centered on the auxiliary tube.

[0011] The lingual bracket of the present disclosure ingeniously utilizes two cross grooves on the bracket base as restraints on the bracket wings, and requires only to be positioned after compressing the spring, resulting in a simple assembly process that also allows for continuous orthodontic force to be generated by the spring force.The lingual bracket of the present disclosure is characterized by an ingenious design, simple structure, easy processing, and convenient clinical operation. [Brief explanation of the drawings]

[0012] The lingual brackets of the present disclosure will be further described below in conjunction with specific drawings. [Figure 1] FIG. 1 is a schematic perspective view of a lingual bracket. [Figure 2] FIG. 1 is a schematic exploded view of a lingual bracket. [Figure 3] FIG. 1 is a schematic side view of a lingual bracket. [Figure 4] 1 is a schematic side view of a lingual bracket II, in which: 1—bracket base, 11—fixing wing, 111—longitudinal groove, 112—lateral groove, 12—auxiliary tube, 13—anti-skid coupling surface, 14—first arc surface, 15—second arc surface, 16—tying wing, 2—bracket wing, 21—insertion leg, 22—wing portion, 221—cap, 222—tying hook, 223—square slot, 224—archwire slot, 23—wide extension, 24—T-shaped head, 3—spring DETAILED DESCRIPTION OF THE INVENTION

[0013] Please refer to Figures 1, 2 and 3. Referring to Figures 1, 2 and 3, the lingual bracket includes a bracket base 1, bracket wings 2 and a spring 3. The bracket base 1 has a top surface with a fixed wing 11 at one end and an auxiliary tube 12 at the other end, and a bottom surface with an anti-slip coupling surface 13. A vertical groove 111 is provided along the central axis of the fixed wing 11. A horizontal groove 112 is provided on the rear end surface of the fixed wing. The horizontal groove 112 and the vertical groove 111 form a vertical structure and are both open structures, which facilitates assembly of the bracket wings 2 through arrangement.

[0014] The bracket wing 2 has an insertion leg 21 and a wing portion 22. The insertion leg 21 has a width equal to that of the longitudinal groove 111 and can be positioned in the longitudinal groove 111. A wide extension portion 23 is provided at the junction between the insertion leg 21 and the wing portion 22. A T-shaped head 24 is provided at the free end of the insertion leg 21. A spring 3 is sleeved onto the insertion leg 21. When the spring 3 is assembled in place, one end of the spring 3 abuts against the T-shaped head 24 and the other end of the spring 3 abuts against the fixed wing 11. The spring 3 can be rotated out of the insertion leg 21 via a wire gap. When the bracket wing is assembled, the insertion leg 21 is positioned in the longitudinal groove 111 after the spring 3 is compressed, and abuts against the fixed wing 11 when the spring 3 is released. The wide extension portion 23 can be inserted into the lateral groove 112 by being pushed forward by a spring, and the on-site linkage between the wide extension portion 23 and the lateral groove 112 can effectively control the axial inclination of the teeth.

[0015] Furthermore, as shown in Figure 3, the upper surface of the bracket base 1 forms a first arcuate surface 14 between the auxiliary tube and the fixed wing. At least the lower surface of the lateral groove of the fixed wing forms a second arcuate surface 15. The first arcuate surface 14 and the second arcuate surface 15 have the same center point. The anti-slip bonding surface 13 of the bracket base is biased toward the end of the auxiliary tube 12 and forms a raised arc at the end of the fixed wing 11 to create a clearance space in the cervical area.

[0016] When assembled in place, the mating surface of the bracket wing 2 that fits with the bracket base 1 also forms an arcuate surface structure having the same center point as the first arcuate surface 14. Specifically, the mating surface here refers to the underside of the bracket wing 2, which can be closely fitted with the second arcuate surface 15 of the bracket base, making it suitable for orthodontic feeding processes.

[0017] Furthermore, the second arcuate surface 15 on the surface of the bracket base 1 has a radius smaller than the radius of the first arcuate surface 14. The second arcuate surface 15 has a radius smaller than the radius of the first arcuate surface by at least the diameter of the spring 3. This creates a clearance space for assembling the spring. Note that the spring 3 may be a rectangular spring in addition to a cylindrical spring.

[0018] The fixing wing 11 of the bracket base has an arched apex and, in the forward mode, is provided with a tying wing 16 to which the end of the spring 3 can be restrained to prevent disengagement of the bracket wing 2. As shown in Fig. 4, the wing portion 22 of the bracket wing has a cap 221 that fits over the arched apex in the forward mode, and a tying hook 222 in the downward mode. In addition, to facilitate the placement of an orthodontic archwire, an angular slot 223 for accommodating the archwire is provided between the cap 221 and the wide extension 23.

[0019] Alternatively, as shown in Figure 3, the bracket wing is machined to have an archwire slot 224 on the rear side of the cap 221. The archwire slot 224 has a front slot surface and a rear slot surface, which are arcuate surfaces centered on the auxiliary tube 12. This allows for individual differences in thickness to be compensated for by changing the depth to which the archwire is fed into the groove while maintaining the auxiliary tube in the same position, even if the cervical thickness varies. This ensures that the distance from the auxiliary tube to the main archwire is the same, reducing clinical bracket errors due to differences in teeth.

[0020] The dashed lines in FIG. 3 represent arcs of concentric circles.

Claims

1. A bracket base and Bracket wing and Spring and Equipped with The bracket base has a top surface with a fixed wing at one end and an auxiliary tube at the other end, and a bottom surface with a non-slip coupling surface; the bracket wing has an insertion leg and a wing portion, and is positionable relative to the fixed wing by the spring sleeved in the insertion leg; A longitudinal groove is provided along the central axis of the fixed wing, A lateral groove is provided on the rear end surface of the fixed wing, the insertion leg has a width equal to the width of the longitudinal groove and is positionable within the longitudinal groove; a wide extension portion is provided at a joint between the insertion leg and the wing portion, A lingual bracket, characterized in that when the insertion leg is placed in the vertical groove and pushed forward by the spring, the wide extension portion is inserted into the horizontal groove to form a positioning structure.

2. an upper surface of the bracket base forms a first arc surface between the auxiliary tube and the fixed wing; At least a lower surface of the lateral groove forms a second arcuate surface; the first arcuate surface and the second arcuate surface have the same center point; The anti-slip coupling surface is biased toward the end of the auxiliary tube and forms a raised arc at the end of the fixed wing; The lingual bracket according to claim 1, wherein the mating surface of the bracket wing that mates with the bracket base forms an arcuate surface structure having the same center point as the first arcuate surface when assembled in a predetermined position.

3. a second arcuate surface of the bracket base having a radius smaller than the radius of the first arcuate surface; 3. The lingual bracket of claim 2, wherein the second arcuate surface has a radius that is smaller than the radius of the first arcuate surface by at least the diameter of the spring.

4. the fixed wing has an arched apex and a tying wing in a forward direction; 3. The lingual bracket according to claim 1, wherein the wing portion has a cap that fits onto the arched top in a forward direction and a tying hook that faces downward.

5. 5. A lingual bracket as defined in claim 4, wherein an angular slot is provided between said cap and said wide extension for receiving an archwire.

6. the bracket wings are machined to have archwire slots on the posterior side of the cap; 5. A lingual bracket according to claim 4, wherein the archwire slot has an anterior slot surface and a posterior slot surface which are arcuate surfaces centered on the auxiliary tube.

Images