Auxiliary front tooth torque control device

Abstract

The present invention relates to an auxiliary anterior teeth torque control device, which comprises a traction hook, an anterior teeth bracket, a spring seat and a traction seat; each anterior tooth is fixed with an anterior teeth bracket, and adjacent anterior teeth brackets are connected by a small coil, the spring seat and the traction seat are respectively fixed on the canine and the second premolar, the spring seat and the traction seat are connected by a square wire, the first molar and the canine are each provided with a traction hook, and the two traction hooks are connected by a rubber chain, the auxiliary anterior teeth torque control device of the present invention has a small force attenuation and a continuous force.

Description

Technical Field

[0001] The invention relates to an auxiliary front teeth torque control device, belonging to the technical field of tooth orthodontic correction. Background Art

[0002] Extraction treatment is common in orthodontic clinics. The loss of anterior teeth torque during the process of retraction is a common clinical problem, which eventually leads to the upright anterior teeth and affects the patient's smile. In order to obtain good anterior teeth torque, invisible braces and lingual braces are designed for overcorrection. The high-torque brackets designed for labial traditional braces are also similar to overcorrection, but the treatment effect is not good. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present invention provides an auxiliary anterior teeth torque control device with relatively small torque loss and long action force duration.

[0004] In order to achieve the above-mentioned purpose, the technical solution proposed in the present invention is: an auxiliary anterior tooth torque control device, including a traction hook, anterior tooth bracket, a spring seat and a traction seat; each anterior tooth is fixed with an anterior tooth bracket, and adjacent anterior tooth brackets are connected by small circles, the spring seat and the traction seat are respectively fixed on the canine and the second premolar, the spring seat and the traction seat are connected by square wire, the first molar and the canine are each provided with a traction hook, and the two traction hooks are connected by a rubber chain.

[0005] A further design of the above technical solution is as follows: the spring seat includes a spring base, a rotating shaft and a spring, the spring base is fixed on the fangs, the rotating shaft is rotatably connected to the spring base, the spring is arranged on the spring base, and one end is fixed to the spring base, and the other end is fixed to the rotating shaft, a square hole is provided on the side of one end of the rotating shaft away from the spring base, and one end of the square wire is inserted into the square hole.

[0006] The traction seat comprises a traction base and a semicircular ring. The traction base is fixed on the second premolar, the semicircular ring is fixed on the traction base, and the end of the square wire away from the spring seat is fixed on the semicircular ring.

[0007] An implant screw is arranged between the lateral incisor and the canine, and the anterior tooth bracket located on the lateral incisor is connected with the implant screw through an Australian wire loop.

[0008] The bottom of the anterior tooth bracket located on the lateral incisor is provided with a cylindrical rod and two bracket blocks, one bracket block is provided with a flat hole, and the other bracket block is provided with a through hole, the cylindrical rod is slidably connected in the through hole, and one end extends out of the through hole and is located between the two bracket blocks, one end of the Australian wire is provided with a plurality of coils, and the end of the Australian wire is provided with a fold; the folded Australian wire is inserted into the flat hole, the coil of the Australian wire is sleeved on the cylindrical rod, and the other end of the Australian wire is fixed on the implant nail.

[0009] The anterior tooth bracket includes a T-shaped bracket and a square bracket. The T-shaped bracket includes a cross bar fixedly connected to each other and a vertical bar extending toward the root of the tooth. The square bracket is bonded and fixed to the tooth surface and sleeved on the vertical bar. The square bracket is stably connected to the T-shaped bracket by being engaged with the vertical bar.

[0010] The traction hook arranged on the canine is fixedly connected to the square bracket corresponding to the anterior bracket. One end of the traction hook arranged on the first molar is bonded and fixed to the buccal side of the first molar, and the other end is located at the mucosal turning point corresponding to the first molar.

[0011] The traction hook comprises a vertical long arm and a plurality of horizontal short arms fixed at one end of the vertical long arm.

[0012] The control device also includes a bracket arranged on the tongue side, and an implant nail is provided at the intersection of the mid-palatal suture and the line connecting the first molars on both sides. The middle part of the bracket is fixed on the implant nail, and two free ends are respectively provided with two forks, which are respectively fixed on the first molar and the second premolar.

[0013] The beneficial effects of the present invention are:

[0014] In the device of the present invention, the distal force line provided by the rubber chain between the two traction hooks is close to the tooth impedance center, and the amount of torque loss of the tooth is relatively small. For cases with deep vestibular grooves, the traction force line is located at the root of the impedance center, and the generated counterclockwise rotation torque (right side view) can assist in increasing the positive torque of the anterior teeth.

[0015] The two auxiliary devices mainly composed of the spring seat and the Australian thread in the present invention can directly generate labial and lingual torques of the anterior crown.

[0016] The force adding device adopted in the present invention has small force attenuation and long duration of force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A cross-sectional view of the central anterior bracket 1;

[0019] Figure 3 for Figure 1 Cross-sectional view of the middle support block and the cylindrical rod;

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of Sino-Australian silk;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the central spring seat;

[0022] Figure 6 for Figure 5 Side view of

[0023] Figure 7 for Figure 1 Schematic diagram of the structure of the middle traction seat;

[0024] Figure 8 for Figure 1 Schematic diagram of the middle traction hook structure.

[0025] In the figure: 1-anterior bracket, 11-T-shaped bracket, 12-square bracket, 13-bracket, 14-cylindrical rod, 2-traction hook, 21-vertical long arm, 22-horizontal short arm, 3-spring seat, 31-spring base, 32-spring, 33-rotating shaft, 4-traction seat, 41-traction base, 42-semicircle ring, 5-Australian wire, 6-square wire, 7-small circle, 8-rubber chain, 91-first implant nail, 92-second implant nail, 10-bracket. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. Example

[0027] like Figure 1 As shown, an auxiliary anterior teeth torque control device of this embodiment comprises an anterior teeth bracket 1 fixed on the anterior teeth, a spring seat 3 fixed on the canines, a traction seat 4 fixed on the second premolars, and two traction hooks 2 respectively fixed on the first molars and canines; the torque control device of this embodiment is a unilateral structure of the oral cavity, and the torque control device is symmetrically arranged on both sides of the oral cavity during actual use. The torque control device of this embodiment fixes an anterior teeth bracket 1 on each of the three anterior teeth on one side of the oral cavity, and two adjacent anterior teeth brackets 1 are connected by a small loop 7.

[0028] Combination Figure 2 As shown, the anterior bracket 1 includes a T-shaped bracket 11 and a square bracket 12. The T-shaped bracket 11 includes a cross bar fixedly connected to each other and a vertical bar extending toward the root direction. The bottom of the square bracket 12 is provided with a blind hole matching the size of the vertical bar. The square bracket 12 is sleeved on the vertical bar and stably connected to the T-shaped bracket 11.

[0029] The bottom of the anterior bracket 1 located on the lateral incisor is provided with a cylindrical rod 14 and two bracket blocks 13, combined with Figure 3 As shown, two brackets 13 are symmetrically arranged at the bottom of the anterior bracket 1, one bracket 13 is provided with a flat hole, and the other bracket 13 is provided with a through hole, and the cylindrical rod 14 is slidably connected in the through hole, and the cylindrical rod 14 passes through the through hole and one end of the cylindrical rod 14 extends out of the through hole and is located between the two brackets 13, and the other end of the cylindrical rod 14 is provided with a handle, which is located outside the through hole and against one side of the bracket 13. Figure 4As shown, one end of the Australian wire 5 is provided with a plurality of coils, and the coils are evenly wound on the cylindrical rod 14, and the end of the Australian wire 5 is provided with a fold; the fold of the Australian wire 5 is used to be inserted into the flat hole, and the coils of the Australian wire 5 are used to be sleeved on the portion of the cylindrical rod 14 located between the two support blocks 13; in this embodiment, a first implant 91 is implanted between the lateral incisor and the canine, and the other end of the Australian wire 5 is fixed on the first implant 91.

[0030] Combination Figure 5 and Figure 6 As shown, the clockwork seat 3 includes a clockwork base 31, a rotating shaft 33 and a clockwork 32. The clockwork base 31 is fixed on the fangs, and the rotating shaft 33 is rotatably connected to the clockwork base 31. The clockwork 32 is arranged on the clockwork base 31, and one end is fixed to the clockwork base 31, and the other end is fixed to the rotating shaft 33. A square hole is provided on the side of the rotating shaft 33 away from the clockwork base 31.

[0031] Combination Figure 7 As shown, the traction seat 4 includes a traction base 41 and a semicircular ring 42, the traction base 41 is fixed on the second premolar, the semicircular ring 42 is fixed on the traction base 41, the clockwork seat 3 and the traction seat 4 are connected by a square wire 6, one end of the square wire 6 is inserted into the square hole on the rotating shaft 33, the size of the square hole matches the square wire, and the other end of the square wire 6 is fixed on the semicircular ring 42.

[0032] like Figure 8 As shown, the traction hook 2 includes a vertical long arm 21 and a plurality of horizontal short arms 22 fixed at one end of the vertical long arm 21. In this embodiment, three horizontal short arms are provided.

[0033] In this embodiment, the traction hook 2 arranged on the canine is fixedly connected to the square bracket 12 of the corresponding anterior bracket at one end away from the horizontal short arm 21, and the traction hook 2 arranged on the first molar is bonded and fixed to the buccal side of the first molar at one end away from the horizontal short arm 21, and the other end is located at the mucosal turning point corresponding to the first molar. The horizontal short arms 21 of the two traction hooks 2 are connected and pulled by a rubber chain.

[0034] In this embodiment, a bracket 10 is further arranged on the lingual side. In this embodiment, a second implant 92 is implanted at the intersection of the mid-palatal suture and the line connecting the first molars on both sides. The middle part of the bracket 10 is fixed on the second implant 92, and two free ends are respectively provided with two forks, which are respectively fixed on the first molar and the second premolar.

[0035] The auxiliary anterior teeth torque control device of the above embodiment is a unilateral structure of the oral cavity. In actual use, two groups of the devices of the above embodiment can be symmetrically arranged on the teeth on both sides of the oral cavity to facilitate the application of symmetrical forces to the oral cavity.

[0036] When the auxiliary anterior teeth torque control device of this embodiment is used, first, one 1.4*9mm first implant screw 91 is implanted between the maxillary lateral incisors and canines on both sides under local anesthesia. Two 2.0*10mm second implant screws 92 are implanted at the connection line between the mid-palatal suture and the first molar, and a mold is taken to make a bracket 10 to stably connect the micro-implant screws in the mid-palatal suture and the maxillary first molars and second premolars on both sides to serve as a posterior teeth stabilizing component, which can well maintain the posterior teeth anchorage.

[0037] A traction hook 2 is bonded to the buccal side of the maxillary first molar, and the free end of the traction hook 2 is located at the mucosal turning point corresponding to the maxillary first molar.

[0038] The vertical rods of the square bracket 12 and the T-shaped bracket 11 of the anterior teeth area are interlocked in place, and each anterior teeth bracket 1 is placed in accordance with the curvature of the dental arch of the anterior teeth area and located at the middle 1 / 3 of the corresponding tooth. After determining the position of the square bracket 12, the corresponding labial side of the anterior teeth area is etched by acid, and the adhesive is applied. The square bracket is fixed with a light-curing adhesive. The vertical rod of the T-shaped bracket 11 is embedded in the square bracket, and the T-shaped brackets 11 of the two adjacent anterior teeth brackets 1 are connected through the small circle 7. The small circle is fixedly connected together with a fluid resin, and is fixedly connected with the T-shaped bracket.

[0039] Use light-curing resin to fix the spring seat 3 and the traction seat 4 at the 1 / 3 of the incisal end of the buccal side of the canine and the second premolar, respectively. The semicircular ring 42 of the traction seat 4 is set in a direction parallel to the long axis of the tooth. Pass the 0.022*0.028 inch stainless steel square wire through the square hole at the axis of the spring seat 3 shaft 33, refer to Figure 1 , make the right side of the square wire rotate counterclockwise and the left side rotate clockwise, wind the spring tightly, and finally pass the free end of the stainless steel square wire through the hole of the semicircular ring 42 of the traction seat 4 and fix it.

[0040] Fix the two brackets 13 to the bottom of the anterior bracket 1 on the lateral incisor, insert the folded end of the Australian wire 5 into the flat hole of one bracket 13, place the spirally curved part of the Australian wire 5 between the two brackets, pass the cylindrical rod 14 through the through hole of the other bracket 13 and insert it into the curved part of the Australian wire 5, and fix the free end of the Australian wire to the first implant 91 in the anterior tooth area.

[0041] A traction hook 2 is fixed on the distal side of the square bracket 12 corresponding to the canine, and the traction hook is connected and pulled with the horizontal short arm 22 end of the traction hook 2 on the first molar by a rubber chain 8. Because its force line is close to the impedance center of the front teeth, the upper front teeth are closer to overall movement when traction force is applied.

[0042] A rubber chain 8 can also be used to pull between the first implant and the bracket to control the vertical position of the anterior teeth. At the same time, because it is located on the labial side of the anterior teeth impedance center, it can also assist in applying crown labial and root lingual torques.

[0043] The spring seat 3 and the Australian wire 5 can assist in applying the torque from the root lingual to the crown labial, so as to realize the overall distal movement of the tooth.

[0044] The mechanical mechanism of the device of this embodiment is as follows:

[0045] The rubber chain 8 between the two traction hooks 2 generates a distal traction force. There are two root-lingual torques, namely: 1) the spring seat 3 can generate distal torques of the canine root and mesial torques of the crown; 2) the Australian wire 5 can generate lingual torques of the anterior root.

[0046] For cases where the front teeth require vertical control, this embodiment uses a rubber chain to pull between the micro-implant and the upper front teeth. Since the force line is located on the labial side of the front teeth impedance center, a counterclockwise torque can be generated on the front teeth.

[0047] Since different anterior tooth inclinations and anterior tooth retraction amounts determine different demands for anterior tooth root lingual torque, one or several methods may be selected during treatment to control the anterior tooth torque according to treatment needs.

[0048] The technical solutions of the present invention are not limited to the above-mentioned embodiments, and any technical solutions obtained by equivalent replacement methods fall within the scope of protection required by the present invention.

Claims

1. An auxiliary anterior tooth torque control device, characterized in that: It includes a traction hook, anterior tooth bracket, a spring seat and a traction seat; each anterior tooth is fixed with an anterior tooth bracket, and adjacent anterior tooth brackets are connected by a small circle, the spring seat and the traction seat are respectively fixed on the canine and the second premolar, the spring seat and the traction seat are connected by a square wire, and a traction hook is provided on the first molar and the canine, and the two traction hooks are connected by a rubber chain; The spring seat comprises a spring base, a rotating shaft and a spring, wherein the spring base is fixed on the fangs, the rotating shaft is rotatably connected to the spring base, the spring is arranged on the spring base, one end of the spring is fixed to the spring base, and the other end is fixed to the rotating shaft, a square hole is arranged on the side of one end of the rotating shaft away from the spring base, and one end of the square wire is inserted into the square hole; An implant screw is set between the lateral incisor and the canine, and the anterior tooth bracket on the lateral incisor is connected to the implant screw through an Australian wire; The bottom of the anterior tooth bracket located on the lateral incisor is provided with a cylindrical rod and two bracket blocks, one bracket block is provided with a flat hole, and the other bracket block is provided with a through hole, the cylindrical rod is slidably connected in the through hole, the cylindrical rod passes through the through hole and one end of the cylindrical rod extends out of the through hole and is located between the two bracket blocks, one end of the Australian wire is provided with a plurality of coils, and the end of the Australian wire provided with a plurality of coils is provided with a return fold; the return fold of the Australian wire is inserted into the flat hole, the coil of the Australian wire is sleeved on the cylindrical rod, and the other end of the Australian wire is fixed on the implant nail; The traction hook comprises a vertical long arm and a plurality of horizontal short arms fixed at one end of the vertical long arm.

2. The auxiliary anterior teeth torque control device according to claim 1, characterized in that: The traction seat comprises a traction base and a semicircular ring. The traction base is fixed on the second premolar, the semicircular ring is fixed on the traction base, and the end of the square wire away from the spring seat is fixed on the semicircular ring.

3. The auxiliary anterior teeth torque control device according to claim 1, characterized in that: The anterior bracket includes a T-shaped bracket and a square bracket. The T-shaped bracket includes a cross bar fixedly connected to each other and a vertical bar extending toward the tooth root. The square bracket is sleeved on the vertical bar and stably connected to the T-shaped bracket by being engaged with the vertical bar.

4. The auxiliary anterior teeth torque control device according to claim 3, characterized in that: The traction hook arranged on the canine is fixedly connected to the corresponding square bracket. One end of the traction hook arranged on the first molar is bonded and fixed to the buccal side of the first molar, and the other end is located at the mucosal turning point corresponding to the first molar.

5. The auxiliary anterior teeth torque control device according to claim 1, characterized in that: It also includes a bracket arranged on the tongue side, with an implant screw at the intersection of the mid-palatal suture and the line connecting the first molars on both sides, the middle part of the bracket is fixed on the implant screw, and the two free ends are respectively provided with two forks, which are respectively fixed on the first molar and the second premolar.

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