Invisible correction device with lingual arch wire

Abstract

The invention relates to an invisible orthodontic device with a lingual arch wire, which comprises a transparent orthodontic appliance sleeved on teeth, a palate bar, a torsion spring and a thick arch wire, the thick arch wire acts on the lingual side of anterior teeth, one end of the torsional spring is connected with the thick arch wire, and the other end of the torsional spring is connected with the palatal bar; the palatal bar penetrates through the transparent appliance to be connected with molar teeth, and the torsion spring pushes the thick arch wire to generate force towards the lip side on anterior teeth; according to the invention, the arch wire is arranged on the lingual side of the anterior teeth, and the arch wire generates a force towards the lip side on the anterior teeth through the torsion spring, so that the lingual inclined movement of the crown of the anterior teeth caused by the transparent appliance in the adduction process of the anterior teeth in a tooth extraction case is effectively resisted, the transparent appliance can be matched to control the torque of the anterior teeth, the integral adduction of the anterior teeth is realized, and the three-dimensional accurate control is realized; the orthodontic treatment course is accelerated, and the orthodontic treatment effect is improved.

Description

Technical Field

[0001] The present invention relates to a clear aligner device provided with a lingual arch wire, and belongs to the technical field of orthodontics. Background Art

[0002] A clear aligner is a device that uses computer-aided design and realizes tooth orthodontic movement by continuously replacing different aligners; most literatures show that the efficiency of clear aligners in some complex extraction cases, such as the control of anterior tooth torque, is significantly lower than that of fixed orthodontics. The biggest drawback of clear aligners in treating extraction cases is that due to the soft material and insufficient rigidity, three-dimensional precise control of teeth cannot be achieved. Therefore, most anterior teeth show lingual inclination movement of the crown, and it is very easy to lose the torque of anterior teeth clinically, which greatly limits the treatment effect of clear aligners in some extraction cases, especially cases that require a large amount of anterior tooth retraction. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, the present invention provides an orthodontic appliance that prevents anterior tooth inclination and retraction by setting an arch wire in a clear aligner.

[0004] In order to achieve the above purpose, the technical solution proposed by the present invention is: a clear aligner device provided with a lingual arch wire, including a clear aligner sleeved on teeth, and further including a palatal bar, a torsion spring, and a thick arch wire; the thick arch wire acts on the lingual side of anterior teeth, one end of the torsion spring is connected to the thick arch wire, and the other end is connected to the palatal bar; the palatal bar passes through the clear aligner and is connected to the molar teeth, and the torsion spring pushes the thick arch wire to generate a force towards the labial side on the anterior teeth.

[0005] A further design of the above technical solution is: the thick arch wire is a stainless steel wire with a size of 0.036 in.

[0006] A preferred solution of the above technical solution is: the thick arch wire abuts against the lingual side of the clear aligner. A card slot is provided on the lingual side of the clear aligner, and the thick arch wire is embedded in the card slot.

[0007] Another preferred solution of the above technical solution is: the thick arch wire is bonded to the lingual side of anterior teeth; an avoidance groove is provided on the lingual side of the clear aligner, and one end of the torsion spring passes through the avoidance groove and is connected to the thick arch wire. A groove is provided on the inner side of the clear aligner corresponding to the thick arch wire, and the thick arch wire is embedded in the groove.

[0008] One torsion spring is respectively provided at both ends of the thick arch wire, and the two torsion springs are symmetrically arranged.

[0009] A hook is provided on the palatal bar, a hanging ring is provided at the corresponding end of the torsion spring, and the torsion spring is connected to the palatal bar through the cooperation of the hanging ring and the hook. The torsion spring is welded to the thick arch wire, or the torsion spring and the thick arch wire are formed by bending the same arch wire.

[0010] The transparent orthodontic appliance is provided with notches corresponding to the molars on both sides, and both ends of the palatal bar pass through the notches and are fixedly connected to the molars.

[0011] The beneficial effects of the technical solution of the present invention compared with the prior art are as follows: In the present invention, an arch wire is arranged on the lingual side of the anterior teeth, and a torsion spring is used to make the arch wire generate a force towards the labial side on the anterior teeth, effectively resisting the lingual inclination movement of the anterior tooth crown caused by the transparent orthodontic appliance during the retraction of the anterior teeth in the extraction case. It can cooperate with the transparent orthodontic appliance to control the torque of the anterior teeth, realize the overall retraction of the anterior teeth, and achieve three-dimensional precise control. In addition, for non-extraction cases with lingually inclined upper anterior teeth, this device can effectively realize the labial movement of the anterior teeth, shorten the conventional orthodontic treatment course, and improve the orthodontic effect.

[0012] The present invention uses a thick arch wire to apply a corrective force to the teeth. Compared with the conventional thin arch wire, it does not need to be used in cooperation with brackets and can directly act on the lingual side of the anterior teeth or the lingual side of the invisible dental appliance. On the premise of ensuring the application of a stable corrective force, the device is simplified; at the same time, the thick arch wire is not easily deformed. Even if the torsion spring acts on both ends of the arch wire, the thick arch wire can stably transmit the thrust to all the anterior teeth to achieve stable control. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the use state of the invisible orthodontic device according to the first embodiment of the present invention; Figure 2 It is the pre-loading state of the invisible orthodontic device of the embodiment; Figure 3 It is a schematic diagram of the structure of the invisible dental appliance in the first embodiment; Figure 4 It is a schematic diagram of the structure of the invisible dental appliance in the second embodiment; Figure 5 It is a schematic diagram of the use state of the invisible orthodontic device according to the third embodiment.

[0014] In the figure: 1 - transparent orthodontic appliance, 11 - card slot, 12 - avoidance slot, 13 - notch, 14 - groove, 2 - palatal bar, 21 - hook, 22 - implant screw, 3 - torsion spring, 31 - hanging ring, 4 - thick arch wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will be described in detail below with reference to the drawings and specific embodiments. Embodiment

[0016] Taking the invisible orthodontic treatment of an extraction case as an example, the invisible orthodontic device adopted in this embodiment has a structure as Figure 1 shown, including a transparent orthodontic appliance 1 sleeved on the teeth, a palatal bar 2 arranged on the palate, a thick arch wire 4 acting on the lingual side of the anterior teeth, and a torsion spring 3 connecting the palatal bar 2 and the thick arch wire 4.

[0017] As Figure 3 shown, in this embodiment, a clamping groove 11 is provided on the lingual side of the invisible dental brace 1, and the thick arch wire 4 is embedded in the clamping groove 11 to prevent the thick arch wire 4 from shifting. The palatal bar 2 is fixed to the palate through the implant screw 22. The transparent orthodontic appliance 1 is provided with notches 13 corresponding to the bilateral molars. Both ends of the palatal bar 2 respectively pass through the notches 13 and are fixedly connected to the molars to serve as anchorage.

[0018] One torsion spring 3 is respectively provided at both ends of the thick arch wire 4. The two torsion springs 3 are symmetrically arranged to apply symmetrical forces to the thick arch wire 4 and stably transmit the thrust force to all the anterior teeth contacted by the thick arch wire 4. One end of the torsion spring 3 is welded to the thick arch wire 4, and the other end is provided with a hanging ring 31. Combining Figure 2 shown, a hook 21 is provided on the palatal bar 2. The corresponding end of the torsion spring 3 is connected to the palatal bar 2 through the cooperation of the hanging ring 31 and the hook 21. During use, first install the thick arch wire 4, the torsion spring 3 and the transparent orthodontic appliance 1 in place, and then compress the torsion spring to connect the hanging ring 31 of the torsion spring 3 with the hook 21 of the palatal bar 2 to apply a force to the anterior teeth.

[0019] Under the action of the torsion spring 3, the thick arch wire 4 pushes against the transparent orthodontic appliance 1, and then pushes against the anterior teeth, applying a corrective force to the anterior teeth toward the labial side to resist the lingual inclination movement of the anterior tooth crown caused by the transparent orthodontic appliance 1 during the retraction of the anterior teeth in the extraction case, which is beneficial to the overall retraction of the anterior teeth. Embodiment

[0020] The structure of the invisible orthodontic device in this embodiment is basically the same as that in Embodiment 1. The difference is that the thick arch wire 4 abuts against the lingual side of the anterior teeth. As Figure 4 shown, in this embodiment, an avoidance groove 12 is provided on the transparent orthodontic appliance corresponding to the torsion spring 3. The thick arch wire 4 is located inside the transparent orthodontic appliance 1 and is bonded to the lingual side of the anterior teeth. After the thick arch wire 4 is connected to the torsion spring 3, when installing the transparent orthodontic appliance 1, this end of the torsion spring 3 can be embedded into the avoidance groove 12, so as not to affect the installation of the transparent orthodontic appliance 1.

[0021] In this embodiment, a groove 14 is further provided on the inner side of the transparent orthodontic appliance 1 corresponding to the thick arch wire 4. The thick arch wire is embedded in the groove 14 to prevent the thick arch wire 4 from shifting relative to the transparent orthodontic appliance 1.

[0022] In this embodiment, the thick arch wire is a stainless steel wire with a size of 0.036, and there is no need to cooperate with brackets. It can directly act on the lingual side of the anterior teeth or the lingual side of the transparent orthodontic appliance as described in Embodiment 1 and this embodiment. Embodiment

[0023] The structure of the invisible orthodontic device in this embodiment is basically the same as that in Embodiment 1. The difference is that this embodiment is used for non-extraction cases of the maxillary anterior teeth with inclination. As Figure 5As shown, the thick arch wire 4 and the torsion spring 3 are bent from the same arch wire, and a 0.036 stainless steel round wire is used. In this embodiment, the lip force is applied to the anterior teeth through the torsion spring 3 and the arch wire, which can effectively achieve the labial movement of the anterior teeth, shorten the conventional orthodontic treatment course, and improve the orthodontic effect.

[0024] The technical solutions of the present invention are not limited to the above embodiments, and all technical solutions obtained by equivalent replacement fall within the scope of protection required by the present invention.

Claims

1. An invisible orthodontic device with a lingual archwire, comprising a transparent orthodontic appliance sleeved on a tooth, characterized in that: It also includes a palatal rod, a torsion spring and a thick arch wire; the thick arch wire acts on the lingual side of the front teeth, one end of the torsion spring is connected to the thick arch wire, and the other end is connected to the palatal rod; the palatal rod passes through a transparent brace and is connected to the molars, and the torsion spring pushes the thick arch wire to generate a force toward the labial side of the front teeth.

2. The invisible correction device with a lingual archwire according to claim 1, characterized in that: The thick archwire is a stainless steel wire with a size of 0.036in.

3. The invisible correction device with lingual archwire according to claim 2, characterized in that: The thick arch wire is against the lingual side of the transparent appliance.

4. The invisible correction device with lingual archwire according to claim 3, characterized in that: The transparent appliance is provided with a slot on the lingual side, and the thick arch wire is embedded in the slot.

5. The invisible correction device with lingual archwire according to claim 2, characterized in that: The thick arch wire is bonded to the lingual side of the front teeth; an avoidance groove is provided on the lingual side of the transparent orthodontic appliance, and one end of the torsion spring passes through the avoidance groove and is connected to the thick arch wire.

6. The invisible correction device with lingual archwire according to claim 5, characterized in that: A groove is provided on the inner side of the transparent appliance corresponding to the thick arch wire, and the thick arch wire is embedded in the groove.

7. The invisible orthodontic device with a lingual archwire according to any one of claims 1 to 6, characterized in that: A torsion spring is respectively provided at both ends of the thick arch wire, and the two torsion springs are symmetrically arranged.

8. The invisible orthodontic device with a lingual archwire according to claim 2, characterized in that: The palate rod is provided with a hook, and the corresponding end of the torsion spring is provided with a hanging ring, and the torsion spring is connected to the palate rod through the cooperation of the hanging ring and the hook.

9. The invisible orthodontic device with a lingual archwire according to claim 8, characterized in that: The torsion spring is welded to the thick arch wire, or the torsion spring and the thick arch wire are bent from the same arch wire.

10. The invisible orthodontic device with a lingual archwire according to claim 9, characterized in that: The transparent appliance is provided with notches corresponding to the molars on both sides, and the two ends of the palatal rod pass through the notches respectively and are fixedly connected to the molars.

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