An orthodontic device for skeletal malocclusion

Abstract

The utility model discloses a kind of correcting devices for skeletal malocclusion deformity, belong to dental orthodontic technical field, comprising: adjusting pedestal, the two sides of the adjusting pedestal are fixed with stretch support assembly, the one end of the stretch support assembly away from adjusting pedestal is fixed with molar ring belt, the stretch support assembly includes: front support arm and rear support arm, the middle part of the rear support arm is detachably installed with traction hook, the first hook is fixed in the side of molar ring belt front end away from face cheek, the first hook is used in cooperation with traction hook, the second hook is fixed in the side of molar ring belt front end close to face cheek, the second hook is used in cooperation with outer belt head cap. The utility model with adjusting pedestal as support, reduce the risk of anterior teeth labial inclination, reduce the possibility of additional implanting implant support needed for pushing molar to the back in later period, shorten the period of patient discomfort, realize the efficient connection of front traction maxilla and pushing molar to the back.

Description

Technical Field

[0001] This utility model belongs to the field of orthodontic technology, and in particular relates to an orthodontic device for skeletal malocclusion. Background Technology

[0002] Malocclusion includes skeletal Class I, Class II, and Class III malocclusions. Among them, skeletal Class III malocclusion is a common developmental malocclusion in clinical practice. Most patients with this type of malocclusion have maxillary hypoplasia, and some also have molar protrusion and narrow dental arches. For skeletal Class III malocclusion with maxillary hypoplasia, the commonly used treatment is anterior traction.

[0003] When using anterior traction to treat maxillary hypoplasia, its mechanism of action is to remodel the craniofacial sutures through traction, thereby stimulating maxillary growth. Traditional anterior traction involves the dentist preparing braces, traction wires, rubber bands, and an external cap. The braces are fixed to the patient's molars, and the traction wires are connected to the braces. Traction hooks are installed on the traction wires, and the external caps are connected to the traction hooks through rubber bands. The external caps apply extraoral traction force to the traction hooks with the help of the rubber bands, thereby acting on the molars and causing the maxilla to move as a whole to achieve the therapeutic effect of anterior traction treatment.

[0004] Anterior traction can effectively improve midfacial hypoplasia, but tooth-supported anterior traction forces applied to the teeth can cause molars to move forward, leaving insufficient space for permanent tooth replacement, leading to dentition crowding, labial inclination of the anterior teeth, and other adverse symptoms. For patients with molars moving forward, molar distalization appliances are routinely used to establish a force transmission relationship between the anterior teeth and molars, applying a posterior force to the molars to move them distally. However, while the molars are distalized, the reaction force can also cause labial inclination of the anterior teeth. Clinically, because the two orthodontic appliances have opposite forces and interfere with each other, they are usually treated separately. That is, anterior traction is performed first, and after the sagittal relationship of the maxilla and mandible is adjusted, molar distalization is then performed. The separate treatment of the two methods has the following drawbacks:

[0005] 1) Pushing molars backward requires additional anchorage, which increases treatment costs and prolongs the period of discomfort.

[0006] 2) The two correction processes are carried out separately, and the correction effects are also achieved separately, so the treatment effects cannot be efficiently connected;

[0007] 3) The force exerted on the molars by the traditional anterior traction orthodontic process and the reaction force exerted on the anterior teeth by the posterior push of the molars can both cause unfavorable symptoms of labial inclination of the anterior teeth.

[0008] For transverse problems, in cases of narrow maxillary dental arches, the force exerted by tooth-supported expansion devices inevitably causes buccal movement of the anchor teeth. Therefore, there is an urgent need for an orthodontic appliance for skeletal malocclusion to address the shortcomings of existing technologies. Utility Model Content

[0009] The purpose of this invention is to provide an orthodontic device for skeletal malocclusion to address the shortcomings of existing technologies.

[0010] To achieve the above-mentioned objectives, the technical solution adopted by this utility model is as follows:

[0011] An orthodontic device for skeletal malocclusion includes: an adjustment base, on both sides of which extension support components are fixed; a molar band is fixed to one end of the extension support components away from the adjustment base; the extension support components include: a front support arm and a rear support arm; a traction hook is detachably mounted in the middle of the rear support arm; a first hook is fixed to the front end of the molar band away from the cheek, the first hook cooperating with the traction hook; and a second hook is fixed to the front end of the molar band near the cheek, the second hook cooperating with an outer headband.

[0012] Furthermore, the front support arm is closer to the canine side, and the rear support arm is closer to the molar side.

[0013] Furthermore, the adjusting base includes: a bidirectional threaded rod, a nut fixed in the middle of the bidirectional threaded rod, and movable blocks symmetrically arranged on both sides of the nut. The two movable blocks are respectively threaded to both ends of the bidirectional threaded rod. Through holes are symmetrically opened at the front and rear ends of the movable blocks, and micro implants are installed in the through holes. Guide rods penetrating the two movable blocks are symmetrically arranged on both sides of the bidirectional threaded rod.

[0014] Furthermore, the two movable blocks are fixed in the patient's maxilla using micro-implants with the mid-palatal suture as a symmetrical reference.

[0015] Furthermore, the molar ring is custom-made according to the size, shape, and arrangement of the patient's molars, and is then fitted onto the patient's molars after customization.

[0016] Furthermore, the first hook is attached to the patient's palate, and the second hook is attached to the outer side of the teeth.

[0017] Furthermore, the towing hook includes: a C-shaped mounting base, on which a telescopic rod is fixed, and a third hook is fixed to the telescopic end of the telescopic rod.

[0018] Furthermore, the telescopic rod can be locked at any position within its telescopic range.

[0019] The present invention provides an orthodontic device for skeletal malocclusion, which has the following advantages compared with the prior art:

[0020] This device achieves skeletal expansion of the dental arch by adjusting the base, extension support components, and molar band. Then, through the coordination of the second hook and the outer cap, it enables anterior traction treatment of the maxilla. Finally, by disconnecting the anterior support arm from the molar band and the posterior support arm from the molar band, and connecting the traction hook to the first hook via a rubber ring, it enables posterior molar pushing treatment. Using the adjustable base as anchorage reduces the risk of labial tipping of the anterior teeth, decreases the likelihood of needing additional implant anchorage for later posterior molar pushing, shortens the period of patient discomfort, and achieves efficient connection between anterior maxillary traction and posterior molar pushing. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the traction hook of this utility model.

[0024] In the diagram: 1-Adjustable base, 2-Extension support assembly, 3-Modulated ring belt, 4-Front support arm, 5-Rear support arm, 6-Traction hook, 7-First hook, 8-Second hook, 9-Double threaded rod, 10-Nut, 11-Moving block, 12-Through hole, 13-Guide rod, 14-C-shaped mounting base, 15-Telescopic rod, 16-Third hook. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments:

[0026] refer to Figure 1-2As shown, this utility model provides an orthodontic device for skeletal malocclusion, comprising: an adjustable base 1, on both sides of which extension support components 2 are fixed; a molar ring band 3 is fixed to the end of the extension support component 2 away from the adjustable base 1; the extension support component 2 includes: a front support arm 4 and a rear support arm 5; a traction hook 6 is detachably installed in the middle of the rear support arm 5; a first hook 7 is fixed to the front end of the molar ring band 3 away from the cheek; the first hook 7 works in conjunction with the traction hook 6; by disconnecting the front support arm 4 from the molar ring band 3 and the rear support arm 5 from the molar ring band 3, and connecting the traction hook 6 to the first hook 7 via a rubber ring, posterior traction of the molars can be achieved. A second hook 8 is fixed to the front end of the molar ring band 3 near the cheek; the second hook 8 works in conjunction with an outer headband; the cooperation of the second hook and the outer headband allows for anterior traction of the maxilla.

[0027] In a preferred embodiment, the front support arm 4 is located near the canine side, and the rear support arm 5 is located near the molar side.

[0028] In a preferred embodiment, the adjusting base 1 includes: a bidirectional threaded rod 9, a nut 10 fixed to the middle of the bidirectional threaded rod 9, and symmetrically arranged movable blocks 11 on both sides of the nut 10. The two movable blocks 11 are threadedly connected to both ends of the bidirectional threaded rod 9. Symmetrically arranged through holes 12 are provided at the front and rear ends of each movable block 11, and micro-implants are installed within the through holes 12. Guide rods 13 are symmetrically arranged on both sides of the bidirectional threaded rod 9, penetrating the two movable blocks 11. The two movable blocks 11 are fixed in the patient's maxilla with the mid-palatal suture as a symmetrical reference, using micro-implants. More preferably, each of the six sides of the nut 10 has a insertion hole at its center for adjustment with a special wrench. In use, the special wrench is inserted into the insertion hole, and rotating the nut 10 causes the bidirectional threaded rod 9 to rotate, causing the two movable blocks 11 to move apart. This opens the mid-palatal suture through the micro-implant implanted in the maxilla, achieving skeletal expansion of the dental arch.

[0029] In a preferred embodiment, the molar ring 3 is customized according to the size, shape and arrangement of the patient's molars, and is then fitted onto the patient's molars after customization.

[0030] In a preferred embodiment, the first hook 7 is attached to the patient's palate, and the second hook 8 is attached to the outside of the teeth, thereby reducing the patient's discomfort.

[0031] In a preferred embodiment, the traction hook 6 includes a C-shaped mounting base 14, on which a telescopic rod 15 is fixed, and a third hook 16 is fixed to the telescopic end of the telescopic rod 15. The telescopic rod 15 can be locked at any position within its telescopic range. By disconnecting the front support arm 4 from the molar ring 3 and the rear support arm 5 from the molar ring 3, a rubber ring can be fitted between the first hook 7 and the third hook 16, thereby achieving posterior treatment of the molars. More preferably, a fourth hook (not shown in the figure) is fixed to the rear end of the molar ring 3 away from the cheek. After the rear support arm 5 is disconnected from the molar ring 3, a rubber ring can be fitted between the third hook 16 and the fourth hook, thereby achieving treatment to prevent buccal tilting of the molars and achieving the effect of "bone expansion and tooth shrinkage".

[0032] In one preferred embodiment, the telescopic rod 15 may be a columnar telescopic rod or a square telescopic rod, and there is no limitation herein.

[0033] The working process and principle of this utility model are as follows:

[0034] S1: Customize the molar ring 3 and the extension support component 2 according to the patient's molar shape and maxillary curvature, and then assemble the adjustment base 1, the extension support component 2 and the molar ring 3.

[0035] S2: Install the traction hook 6, adjust the length of the telescopic rod 5 as needed and lock it, then use surgical forceps to fix the C-shaped seat 14 to the side of the rear support arm 5 near the molar band 3, and finally fix the orthodontic device to the patient's maxilla using micro implants.

[0036] S3: By turning the nut 10 with a special wrench, the two moving blocks 11 move apart, thereby opening the palatal suture through the micro-implant implanted in the maxilla, achieving skeletal expansion of the dental arch;

[0037] S4: After the arch expansion is completed, have the patient wear an outer head cap and place a rubber ring between the outer head cap and the second hook 8 to achieve anterior traction treatment of the maxilla.

[0038] S5: After the anterior traction treatment is completed, observe whether there is buccal tilt of the molar. If so, put a rubber ring between the third hook 16 and the fourth hook (with the adjustment base 1 as the anchor) to achieve the treatment of preventing buccal tilt of the molar and achieve the effect of "bone expansion and tooth shrinkage".

[0039] S6: After completing the above operations, disconnect the connection between the front support arm 4 and the molar ring 3 and the rear support arm 5 and the molar ring 3 using surgical forceps. Place a rubber ring between the first hook 7 and the third hook 16 (with the adjusting base 1 as the anchor) to push the molar backward for treatment.

[0040] The above procedure is for cases of maxillary hypoplasia, narrow dental arch, and underbite, where the molars need to be pushed back during anterior retraction treatment. It should be noted that this device is also effective for one or more of these conditions.

[0041] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0042] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A corrective device for skeletal malocclusion, characterized in that, include: An adjustable base (1) is provided, and extension support components (2) are fixed on both sides of the adjustable base (1). A molar ring band (3) is fixed at one end of the extension support component (2) away from the adjustable base (1). The extension support component (2) includes a front support arm (4) and a rear support arm (5). A traction hook (6) is detachably installed in the middle of the rear support arm (5). A first hook (7) is fixed on the front end of the molar ring band (3) away from the cheek. The first hook (7) is used in conjunction with the traction hook (6). A second hook (8) is fixed on the front end of the molar ring band (3) near the cheek. The second hook (8) is used in conjunction with the outer headgear.

2. The orthodontic device for skeletal malocclusion according to claim 1, characterized in that, The front support arm (4) is close to the canine side, and the rear support arm (5) is close to the molar side.

3. The orthodontic device for skeletal malocclusion according to claim 1, characterized in that, The adjusting base (1) includes: a bidirectional threaded rod (9), a nut (10) fixed in the middle of the bidirectional threaded rod (9), and movable blocks (11) symmetrically arranged on both sides of the nut (10). The two movable blocks (11) are respectively threaded to both ends of the bidirectional threaded rod (9). The front and rear ends of the movable blocks (11) are symmetrically provided with through holes (12). Micro implants are installed in the through holes (12). Guide rods (13) penetrating the two movable blocks (11) are symmetrically arranged on both sides of the bidirectional threaded rod (9).

4. The orthodontic device for skeletal malocclusion according to claim 3, characterized in that, The two movable blocks (11) are fixed in the patient's maxilla with the palatal midline as the symmetrical reference.

5. The orthodontic device for skeletal malocclusion according to claim 1, characterized in that, The molar ring (3) is customized according to the size, shape and arrangement of the patient's molars, and is then fitted onto the patient's molars after customization.

6. The orthodontic device for skeletal malocclusion according to claim 1, characterized in that, The first hook (7) is attached to the patient's palate, and the second hook (8) is attached to the outside of the teeth.

7. The orthodontic device for skeletal malocclusion according to claim 1, characterized in that, The traction hook (6) includes: a C-shaped mounting base (14), on which a telescopic rod (15) is fixed, and a third hook (16) is fixed at the telescopic end of the telescopic rod (15).

8. The orthodontic device for skeletal malocclusion according to claim 7, characterized in that, The telescopic rod (15) can be locked at any position within the telescopic range.

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