Double-guide-plate double-jaw-pad magnetic appliance
By using a dual-guide plate type double jaw pad magnetic orthodontic appliance, the attraction and repulsion of magnets are combined with external traction to solve the problems of insufficient traction and instability in existing orthodontic appliances, thus achieving the effects of jaw repositioning and shortening the treatment cycle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing oral functional appliances have insufficient traction force and inconsistent direction when correcting malocclusion caused by imbalance in the sagittal relationship of the maxilla and mandible. Furthermore, they are unstable for some patients, especially at night when the correction effect is poor. Traditional external devices are bulky, aesthetically unappealing, and have poor patient compliance.
The double-guide plate type double-pawl magnetic orthodontic appliance uses the attraction or repulsion of magnets as the orthodontic force. Combined with the double-guide plate device, it works synergistically with external force traction and the biological effect of magnetic field to stimulate condylar cell proliferation, realize jawbone repositioning and remodeling, and control the vertical eruption of posterior teeth.
It improves the corrective force and stability, shortens the treatment cycle, is compact and aesthetically pleasing, provides high patient comfort, and has significant corrective effects.
Smart Images
Figure CN224070600U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of oral functional orthodontic devices, specifically relating to a dual-guide plate type dual-jaw pad magnetic orthodontic appliance. Background Technology
[0002] During childhood growth and development, malocclusion caused by congenital genetic factors and acquired environmental factors not only impairs appearance but also affects chewing, swallowing, speech, and facial expression. The incidence of malocclusion is on the rise in modern society. While oral appliances that utilize the strength of the orofacial muscles as traction are now accepted by both patients and doctors, they share a common drawback: the devices in existing traditional orthodontic appliances that guide the mandible forward and backward movement typically rely on the traction of perioral muscles. Because this traction force is relatively weak, the corrective effect is not ideal for some patients with skeletal malocclusion accompanied by open bite. Furthermore, some patients have poor compliance and tolerance, making it difficult to maintain the mandible in the reconstructed position for extended periods during wear and sleep. Some patients require inhibition or traction to promote maxillary development, necessitating the use of extraoral bows, headbands, or other traction devices. These devices are bulky, aesthetically unappealing, and uncomfortable, and require patient self-installation and force application, making them extremely inconvenient.
[0003] Furthermore, relevant literature reports that the biological effects of magnetic fields can stimulate faster proliferation of condylar cells, not only altering the position of the mandible but also promoting its growth. With normal skeletal relationships established, subsequent second-stage fixed appliance treatment is much easier. Current research on the responses of the condyle, jawbone, and alveolar bone to the magnetic Twin.block appliance has confirmed that this type of appliance is significantly effective in improving mandibular hypoplasia during the mixed dentition period and early permanent dentition, correcting sagittal skeletal misalignment, and improving facial profile.
[0004] Against this backdrop, this application proposes a novel magnetic functional appliance—a dual-guide plate type dual-maxillary pad magnetic appliance—based on improvements to the traditional double-maxillary pad appliance, to address common malocclusions caused by imbalances in the sagittal relationship between the maxilla and mandible. Utility Model Content
[0005] The purpose of this application is to provide a dual-guide plate type double jaw pad magnetic orthodontic appliance that improves upon the shortcomings of existing functional orthodontic appliances, such as insufficient traction force, inconsistent traction direction, instability of mandibular position during normal wear and sleep in some patients, and the drawbacks of extraoral traction devices. This appliance introduces magnetic force into the oral cavity, utilizing the attractive or repulsive force of magnets as the source of orthodontic force, in conjunction with a dual-guide plate type double jaw pad device, to achieve jawbone repositioning and remodeling, and control the vertical eruption of posterior teeth. Simultaneously, under the synergistic effect of the biological effects of the magnetic field and external traction, it stimulates condylar cells to proliferate more rapidly, thereby shortening the treatment duration.
[0006] The objective of this application is achieved through the following technical solution:
[0007] A dual-guide plate type magnetic orthodontic appliance includes a first occlusal pad and a second occlusal pad opposite to the first occlusal pad. A first anterior tooth guide plate is formed on the first occlusal pad, and an anteriorly facing first posterior tooth inclined guide plate is formed on the posterior ramus portion of the first occlusal pad. A second anterior tooth guide plate is formed on the second occlusal pad, and a posteriorly facing second posterior tooth inclined guide plate is formed on the anterior ramus portion of the second occlusal pad. The first anterior tooth guide plate and the second anterior tooth guide plate are opposite to each other, and the first posterior tooth inclined guide plate and the second posterior tooth inclined guide plate are opposite to each other. Magnets that are opposite to each other and magnetically attracted or repelled are provided on the first anterior tooth guide plate and the second anterior tooth guide plate. Magnets that are opposite to each other and magnetically attracted or repelled are provided on the first posterior tooth inclined guide plate and the second posterior tooth inclined guide plate.
[0008] Furthermore, the first jaw pad is either a maxillary pad or a mandibular pad, and the corresponding second jaw pad is either a mandibular pad or a maxillary pad.
[0009] Furthermore, the first and second anterior tooth guide plates are planar or inclined guide plates.
[0010] Furthermore, the first posterior tooth inclined guide plate is inclined from front to back from the crown to the root, and the corresponding second posterior tooth inclined guide plate is inclined from back to front from the crown to the root.
[0011] Furthermore, the first and second jaw pads are made of transparent rigid material.
[0012] Furthermore, it also includes a first hyperbolic lip arch and a second hyperbolic lip arch opposite the jaw.
[0013] Furthermore, the first and second jaw pads are provided with retainers, which are clips, loops, or interproximal hook structures.
[0014] Furthermore, the magnets on the first and second anterior tooth guide plates are arranged parallel to the guide plate surfaces, and the magnets on the first and second posterior tooth inclined guide plates are arranged parallel to the guide plate surfaces or perpendicular to the jaw plane.
[0015] Furthermore, the magnet is a rare-earth permanent magnet, specifically a neodymium iron boron high-power magnet.
[0016] Furthermore, the surface of the magnet is coated with a titanium nitride film.
[0017] Furthermore, the magnet is rectangular, rhomboid, circular, or a fitting-adaptive shape.
[0018] Furthermore, the magnet is fixed to the jaw pad by embedding, bonding, or sleeve embedding.
[0019] The beneficial effects of this application are as follows: Magnetic force is introduced into the oral cavity, utilizing the attractive or repulsive force of magnets as the source of corrective force. Simultaneously, double guide plates on the inclined (flat) surfaces of the upper and lower anterior teeth are incorporated into the traditional double jaw pad device to achieve jawbone repositioning and remodeling, as well as control the vertical eruption of posterior teeth. The use of a double guide plate type double jaw pad magnetic orthodontic appliance, under the synergistic effect of the biological effects of the magnetic field and external traction, stimulates condylar cells to proliferate more rapidly, thereby shortening the treatment duration. This utility model has the advantages of simple structure, small size, easy manufacturing, strong and lasting corrective force, minimal impact on oral function, and minimal foreign body sensation for patients.
[0020] The aforementioned main solution and its various further alternatives can be freely combined to form multiple solutions, all of which are solutions that can be adopted and are claimed in this application; furthermore, the (non-conflicting alternatives) can also be freely combined with each other and with other alternatives. Those skilled in the art, after understanding this solution, will realize from the prior art and common general knowledge that there are many combinations, all of which are technical solutions to be protected in this application, and will not be exhaustively listed here. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure used in this application for Angle Class II (left maxilla, right mandible).
[0022] Figure 2 This is a schematic diagram of the structure used in this application for Angle Class III (left maxilla, right mandible).
[0023] Figure 3 This is a schematic diagram of the specific implementation of this application. Figure 1 .
[0024] Figure 4 This is a schematic diagram of the specific implementation of this application. Figure 2 .
[0025] Figure 5 This is a schematic diagram of the specific implementation of this application. Figure 3 .
[0026] Figure 6 This is a schematic diagram of the specific implementation of this application. Figure 4 .
[0027] In the diagram: 1-First occlusal pad, 2-First anterior tooth guide plate, 3-First posterior tooth inclined plane guide plate, 4-Second occlusal pad, 5-Second anterior tooth guide plate, 6-Second posterior tooth inclined plane guide plate, 7-First double-curved labial arch, 8-Second double-curved labial arch, 9-Retainer, 10-Magnet. Detailed Implementation
[0028] The present application will be further described below with reference to specific embodiments and accompanying drawings.
[0029] Example 0
[0030] refer to Figure 1 and Figure 2 As shown, a dual-guide plate type magnetic orthodontic appliance includes a first occlusal pad 1, a first anterior tooth guide plate 2, a first posterior tooth inclined plane guide plate 3, a second occlusal pad 4, a second anterior tooth guide plate 5, a second posterior tooth inclined plane guide plate 6, a first double-curved labial arch 7, a second double-curved labial arch 8, a retainer 9, and a magnet 10.
[0031] The first occlusal pad 1 and the second occlusal pad 4 are two opposing occlusal pads, that is, the first occlusal pad 1 is either a maxillary pad or a mandibular pad, and the corresponding second occlusal pad 4 is either a mandibular pad or a maxillary pad. The first occlusal pad 1 and the second occlusal pad 4 are a modified double occlusal pad orthodontic appliance, made of transparent rigid material, and are custom-made according to the patient's mouth shape and tooth position, as well as the arrangement, shape and size of the teeth.
[0032] The first occlusal pad 1 has a structure that is lower in the front and higher in the back, corresponding to the second occlusal pad 4 having a structure that is higher in the front and lower in the back. A first anterior tooth guide plate 2 is formed on the first occlusal pad 1, and a first posterior tooth inclined guide plate 3 facing forward is formed on the posterior ramus portion of the first occlusal pad 1. A second anterior tooth guide plate 5 is formed on the second occlusal pad 4, and a second posterior tooth inclined guide plate 6 facing backward is formed on the anterior ramus portion of the second occlusal pad 4.
[0033] The first anterior guide plate 2 and the second anterior guide plate 5 are opposite each other, and the first posterior inclined guide plate 3 and the second posterior inclined guide plate 6 are opposite each other. The first anterior guide plate 2 and the second anterior guide plate 5 are provided with magnets 10 that are opposite each other and magnetically attracted or repelled. The first posterior inclined guide plate 3 and the second posterior inclined guide plate 6 are provided with magnets 10 that are opposite each other and magnetically attracted or repelled.
[0034] When the upper and lower posterior teeth are in the reconstructed position, the positive and negative poles of the magnets are opposite each other, using the resulting attraction to force the mandible into the reconstructed posture. Alternatively, the repulsive force of magnets with the same poles can be used to obtain the required corrective force. Under the synergistic effect of the biological effects of the magnetic field and the external traction, condylar cells are stimulated to proliferate more quickly, thus shortening the treatment course. Furthermore, by utilizing the principle of attraction and repulsion between magnets, the number, placement, orientation, and combination of magnets with the same and opposite poles can be flexibly adjusted according to the actual situation for different malocclusions, thereby achieving control over the magnitude and vector of the corrective force, resulting in significant corrective effects.
[0035] The first anterior tooth guide plate 2 and the second anterior tooth guide plate 5 are either planar or inclined plane guide plates. The first posterior tooth inclined plane guide plate 3 is inclined from front to back from the crown to the root, and the corresponding second posterior tooth inclined plane guide plate 6 is inclined from back to front from the crown to the root. The magnets 10 on the first anterior tooth guide plate 2 and the second anterior tooth guide plate 5 are arranged parallel to the guide plate surface, and the magnets 10 on the first posterior tooth inclined plane guide plate 3 and the second posterior tooth inclined plane guide plate 6 are arranged parallel to the guide plate surface or perpendicular to the occlusal plane.
[0036] Neodymium iron boron (NdFeB) permanent magnets are placed on the inclined guide plates of the upper and lower posterior teeth. The magnets on the inclined guide plates are arranged in parallel so that when the upper and lower posterior teeth are in the reconstructed position, the positive and negative poles of the magnets are opposite, and the resulting attraction forces the mandible into the reconstructed position. Double-plane guide plates are set at the upper and lower anterior teeth, and magnets with opposite poles are placed there, so that the upper and lower anterior teeth are stably occluded in the reconstructed mandibular position under the attraction of the magnetic force.
[0037] Alternatively, double-bevel guide plates can be installed at the anterior and posterior teeth, with magnets of the same polarity placed in the guide plate areas of the anterior and posterior teeth, and the magnets on the bevel guide plates of the posterior teeth arranged vertically. The repulsive force is used to control and improve the growth direction of the maxilla and mandible.
[0038] Depending on the specific circumstances, a spiral expander can be placed on the upper and lower jaws to expand the arches using the first bi-curved labial arch 7 and the opposing second bi-curved labial arch 8.
[0039] The first jaw pad 1 and the second jaw pad 4 are provided with retainers 9. The retainers of the upper and lower jaw pads can be scissor clips, ring clips or interproximal hook structures according to the shape of the abutment teeth and the eruption status. The number and position of these retainers depend on the specific situation of the oral cavity.
[0040] One or more sets of symmetrical or asymmetrical magnets are placed on the anterior and posterior dental guides. Magnet 10 is a third-generation rare-earth permanent magnet, neodymium iron boron (NdFeB), with a titanium nitride film coating its surface. NdFeB contains iron, which is particularly susceptible to oxidation, corrosion, and even disintegration in the oral cavity environment, leading to a decline in magnet performance. By uniformly coating the magnet surface with a titanium nitride film, the chemical stability and high film hardness of titanium nitride are achieved, resulting in wear and corrosion resistance.
[0041] Depending on specific needs, the magnet 10 can be rectangular, rhomboid, circular, or an accessory-adaptive shape. The magnet 10 is fixed to the jaw pad by embedding, bonding, or sleeve embedding. The orientation of the magnet 10 can be changed, and the direction of the magnetic force can be set according to specific needs.
[0042] This invention has the advantages of simple structure, small size, easy manufacturing, strong and long-lasting corrective force, minimal impact on oral function, and minimal foreign body sensation for patients when inserted into the mouth.
[0043] Example 1
[0044] refer to Figure 3 As shown, a dual-guide plate type magnetic orthodontic appliance guides the mandible forward. A pair of magnets with opposite poles are placed parallel to each other on the inclined guide surfaces of the upper and lower posterior teeth, following the slope of the guide. Another pair of magnets with opposite poles are placed parallel to each other on the plane guide plates of the upper and lower anterior teeth. When the mandible protrudes to the reconstructed position, the positive and negative poles of the magnets on the anterior and posterior teeth are opposite each other, using the resulting attraction to force the mandible into the reconstructed posture.
[0045] Everything else is the same as in Example 1.
[0046] Example 2
[0047] refer to Figure 4 As shown, a dual-guide plate type magnetic orthodontic appliance guides mandibular retraction. One or more sets of magnets with opposite poles are placed parallel to each other on the inclined guide surfaces of the upper and lower posterior occlusal pads, following the slope of the inclination. Another one or more sets of magnets with opposite poles are placed parallel to each other on the plane guide plates of the upper and lower anterior teeth. When the mandible is retracted to the reconstructed position, the positive and negative poles of the magnets on the anterior and posterior teeth are opposite each other, using the resulting attraction to force the mandible into the reconstructed posture.
[0048] Everything else is the same as in Example 1.
[0049] Example 3
[0050] refer to Figure 5 As shown, a dual-guide plate type magnetic orthodontic appliance with double occlusal pads inhibits maxillary development and promotes mandibular development. One or more sets of magnets with the same polarity are placed parallel to each other, perpendicular to the occlusal plane, on the inclined guide surfaces of the bilateral maxillary and mandibular posterior occlusal pads. Another one or more sets of magnets with the same polarity are placed parallel to each other, following the slope of the inclined guide plates, on the inclined guide surfaces of the maxilla and mandibular posterior occlusal pads. The repulsive force of the magnets with the same polarity is used to inhibit maxillary development and promote mandibular advancement. In the anterior region, the vertical component of the magnetic force is used to improve deep overbite; the horizontal component is used to improve deep overjet.
[0051] Everything else is the same as in Example 1.
[0052] Example 4
[0053] refer to Figure 6 As shown, a dual-guide plate type magnetic orthodontic appliance with double occlusal pads inhibits mandibular development and promotes maxillary development. One or more sets of magnets of the same polarity are placed parallel to each other on the inclined guide surfaces of the bilateral upper and lower posterior occlusal pads, perpendicular to the occlusal plane. One or more sets of magnets of the same polarity are placed parallel to each other on the inclined guide surfaces of the upper and lower anterior teeth, following the slope of the inclination. The repulsive force of the magnets of the same polarity promotes maxillary anterior development and inhibits mandibular development. In the anterior region, the vertical and horizontal components of the magnetic force are used to establish an overbite-overjet relationship, which also has a certain effect on patients with skeletal open bite.
[0054] Everything else is the same as in Example 1.
[0055] The foregoing basic examples and their further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in this application. In the scheme of this application, each alternative example can be arbitrarily combined with any other basic example and alternative example.
[0056] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A twin-arch magnetic appliance for the correction of the dental arches, comprising a first arch (1) and a second arch (4) opposite to the first one, characterized in that: The first jaw pad (1) is provided with a first front tooth guide plate (2), and the back pad part of the first jaw pad (1) is provided with a forward first back tooth inclined guide plate (3); the second jaw pad (4) is provided with a second front tooth guide plate (5), and the front pad part of the second jaw pad (4) is provided with a backward second back tooth inclined guide plate (6); the first front tooth guide plate (2) is opposite to the second front tooth guide plate (5), and the first back tooth inclined guide plate (3) is opposite to the second back tooth inclined guide plate (6); the first front tooth guide plate (2) and the second front tooth guide plate (5) are provided with magnets (10) which are opposite in position and magnetically attractive or repulsive; the first back tooth inclined guide plate (3) and the second back tooth inclined guide plate (6) are provided with magnets (10) which are opposite in position and magnetically attractive or repulsive.
2. The twin-arch palatal expander of claim 1, wherein: The first front tooth guide plate (2) and the second front tooth guide plate (5) are plane or inclined guide plates.
3. The twin-arch magnetic appliance of claim 1 or 2, wherein: The first back tooth inclined guide plate (3) is inclined from the tooth crown to the tooth root in the direction from front to back, and the second back tooth inclined guide plate (6) is inclined from the tooth crown to the tooth root in the direction from back to front.
4. The twin-arch palatal expander of claim 1, wherein: The first jaw pad (1) and the second jaw pad (4) are transparent hard materials.
5. The twin-arch palatal expander of claim 1, wherein: The first double curved lip arch (7) and the second double curved lip arch (8) opposite to the jaw are further included.
6. The twin-arch palatal expander of claim 1, wherein: The first jaw pad (1) and the second jaw pad (4) are provided with retainers (9), and the retainers (9) are shear head clamps, ring clamps or interproximal hook structures.
7. The twin-arch magnetic appliance of claim 1 or 2, wherein: The magnets (10) on the first front tooth guide plate (2) and the second front tooth guide plate (5) are arranged parallel to the guide plate surface, and the magnets (10) on the first back tooth inclined guide plate (3) and the second back tooth inclined guide plate (6) are arranged parallel to the guide plate surface or perpendicular to the jaw plane.
8. The twin-arch palatal expander of claim 1, wherein: The magnet (10) is a rare earth permanent magnet neodymium iron boron strong magnet; and the surface of the magnet (10) is wrapped with a titanium nitride film.
9. The twin-arch palatal expander of claim 1, wherein: The magnet (10) is rectangular, rhombic, circular or accessory adaptive.
10. The twin-arch palatal expander of either claim 1 or 9, wherein: The magnet (10) is fixed on the jaw pad by embedding, bonding or sleeve inlaying.