Front tooth guide plate type magnetic open surface retainer

Abstract

The front tooth guide plate type magnetic open-face retainer comprises a first tooth socket and a second tooth socket opposite to the jaw, the rear tooth occlusal surfaces and the front tooth incisal ends of the first tooth socket and the second tooth socket are provided with windowing structures, and the front tooth tongue side of the first tooth socket is provided with a first front tooth guide plate. A second anterior tooth guide plate opposite to the first anterior tooth guide plate is arranged on the anterior tooth tongue side of the second tooth socket; and opposite magnets which are magnetically attracted are respectively arranged on the first anterior tooth guide plate and the second anterior tooth guide plate. The anterior tooth guide plate has the beneficial effects that a tooth position and jaw position dual-maintaining effect can be achieved, the complete dentition is wrapped to prevent recurrence such as crowding, twisting and gaps, meanwhile, the lower jaw reconstruction position and the occlusion relation can be maintained through the anterior tooth guide plate and the magnetic force of the magnet, meanwhile, the anterior tooth guide plate can also control the vertical growth trend of teeth of a deep overjaw patient, and the aim of maintaining the tooth position and the jaw position is achieved. Recurrence of deep overjaw is prevented; manufacturing is easy, time can be saved, efficiency is improved, and commercialization is facilitated.

Description

Technical Field

[0001] This application belongs to the field of oral functional orthodontic device technology, specifically relating to an anterior tooth guide plate type magnetic open face retainer, which is used for patients with deep overbite, deep overjet, and mandibular retrusion after orthodontic treatment, as well as for patients with temporomandibular joint disorders and dental restoration after occlusal reconstruction, to achieve the effect of maintaining both tooth position and jaw position. Background Technology

[0002] Orthodontic treatment includes active treatment and passive retention. After active treatment and appliance removal, the teeth move to the target position, but the periodontal tissues, including the periodontal ligament and alveolar bone, are not yet fully remodeled and require time to rebuild. Simultaneously, at the end of orthodontic treatment, the forces of surrounding soft tissues such as the lips, cheeks, and tongue muscles continue to act on the unstable teeth, leading to a tendency for relapse. Furthermore, growth and development can also alter the outcome of orthodontic treatment. Teeth also have a continuous vertical growth tendency. Therefore, the retention time after deep overbite treatment often needs to last for several years, affecting the stability of orthodontic efficacy. Moreover, in older patients with mandibular retrusion, the occlusal force used to maintain mandibular protrusion to a functional position is often insufficient, resulting in poor efficacy. This can easily lead to further mandibular retrusion, worsening of deep overbite, and even the formation of "double occlusion." Therefore, to achieve a stable orthodontic outcome, maintaining the stability of the occlusal state of the dentition, especially jaw position stability, is something that current retainers lack.

[0003] After mandibular protrusion occlusal repositioning treatment or full-mouth fixed occlusal reconstruction in patients with temporomandibular joint disorder, the position of the articular disc and condyle changes, and the condyle achieves a stable articular position. It can function painlessly on the adapted fibrous tissue and in the new intercuspal position. However, there is still a tendency for relapse. To achieve a stable reconstruction effect and prevent relapse, long-term maintenance is required. Currently, maintaining jaw position stability in patients with temporomandibular joint disorder and after occlusal reconstruction remains a weak point in this field.

[0004] Currently, the three main types of traditional retainers commonly used in clinical practice are: Hawley retainers, lingual wire retainers, and full-coverage thermoplastic transparent retainers. Hawley retainers are widely used removable retainers, consisting of clasps, a double-curved labial arch, and a base connecting the two. The base in the anterior region acts similarly to a guide and occlusal plate, providing some control over overbite. The posterior occlusal surfaces are not covered, allowing for natural occlusion and contributing to occlusal stability. However, Hawley retainers are relatively large, resulting in a less pleasant experience for patients, and the double-curved labial arch has some aesthetic impact. Furthermore, their fabrication, including the bending and filling of the clasps and labial arch, requires high technical sensitivity. Lingual wire retainers are fixed to the lingual side of the anterior teeth using braided wire or similar adhesives. They are effective in preventing relapse of crowding in the lower anterior region. However, the bending and bonding of the archwire requires high technical sensitivity, resulting in poor effectiveness in preventing relapse of deep overbite and deep overjet, especially in maintaining the mandibular reconstructed position. Thermoformed transparent retainers are made of thermoplastic resin under vacuum pressure and are widely used in clinical practice due to their excellent aesthetics, comfort, and low technical sensitivity. However, their vertical retention effect is poor for patients with deep overbite and deep overjet. Because they cover the entire dentition and have a smooth surface, the mandible can slide freely in the anteroposterior direction, and their retention effect after mandibular reconstruction treatment and occlusal reconstruction is almost zero.

[0005] In summary, the three commonly used traditional retainers in clinical practice currently have varying degrees of problems in terms of aesthetics, comfort, technical sensitivity, and vertical control for patients with deep overbite, deep overjet, mandibular retrusion, and mandibular repositioning and occlusal reconstruction after temporomandibular joint disorders. Utility Model Content

[0006] The purpose of this application is to provide a novel retainer that plays a dual role in maintaining tooth position and jaw position—an anterior guide plate type magnetic open face retainer. It can prevent the overbite and overjet from deepening after active orthodontic treatment in patients with deep overbite and deep overjet, and can also avoid double occlusion caused by jaw position instability after correction in patients with mandibular retrusion. Furthermore, it plays a dual role in maintaining tooth position and jaw position after mandibular repositioning and occlusal reconstruction in patients with temporomandibular joint disorders. It has good aesthetics, comfort and low technical sensitivity, and can be commercialized. It solves the various shortcomings of traditional retainers in terms of aesthetics, comfort, technical sensitivity and vertical control.

[0007] The objective of this application is achieved through the following technical solution:

[0008] A magnetic open-face retainer with an anterior guide plate includes a first dental crown and a second dental crown with an opposing jaw. The occlusal surfaces of the posterior teeth and the incisal edges of the anterior teeth of the first and second dental crowns are provided with window structures. A first anterior guide plate is provided on the lingual side of the anterior teeth of the first dental crown, and a second anterior guide plate is provided on the lingual side of the anterior teeth of the second dental crown, which is opposite to the first anterior guide plate. Opposite magnets that are magnetically attracted are provided on the first and second anterior guide plates respectively.

[0009] Furthermore, the first and second dental crowns are transparent heat-pressed films, the first and second anterior guide plates are light-cured resins, the first anterior guide plate is wrapped inside the first dental crown and integrally formed, and the second anterior guide plate is wrapped inside the second dental crown and integrally formed.

[0010] Furthermore, the first and second braces are provided with buccal and lingual wrapping structures that match the entire dentition.

[0011] Furthermore, the fenestration structure of the anterior incisal edge of the first and second braces is within 1 / 3 of the anterior incisal edge.

[0012] Furthermore, the first and second anterior tooth guide plates are opposing planes or inclined planes.

[0013] Furthermore, the first and second anterior guide plates are located at the incisal 1 / 3 of the anterior teeth to the lingual protuberance.

[0014] Furthermore, the magnet is a rare-earth permanent magnet, specifically a neodymium iron boron high-power magnet.

[0015] Furthermore, the magnets are all rectangular, rhomboid, circular, or accessory-adaptive in shape.

[0016] Furthermore, the magnet is fixed to the guide plate by embedding, bonding, or sleeve embedding.

[0017] Furthermore, the surface of the magnet is coated with a titanium nitride film.

[0018] The beneficial effects of this application are:

[0019] 1. It can play a dual role in maintaining tooth and jaw position. While covering the entire dentition to prevent recurrence of crowding, rotation, and gaps, it can maintain the reconstructed position and occlusal relationship of the mandible through the anterior guide plate and magnetic force of the magnet. At the same time, the anterior guide plate can also control the vertical growth trend of teeth in patients with deep overbite and prevent recurrence of deep overbite.

[0020] 2. The anterior tooth guide plate is small in size and is integrally molded and encased with the thermoplastic film open surface retainer. The transparent thermoplastic resin material has the characteristics of good comfort and good aesthetics, and has little impact on the patient's daily activities and social activities.

[0021] 3. The process is simple, the cost is low, and the technical sensitivity is low. It can be made on traditional plaster working models as well as under 3D printing working model conditions, meeting the needs of clinicians under different conditions.

[0022] 4. It is simple to produce, saves time, improves efficiency, and is conducive to commercialization.

[0023] 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

[0024] Figure 1 This is a schematic diagram of the overall structure of this application.

[0025] Figure 2 This is a side view of the anterior tooth guide structure of this application (the left is the planar guide, and the right is the inclined guide).

[0026] Figure 3 This is a lingual view of the anterior tooth guide structure of this application.

[0027] Figure 4 This is a schematic diagram of an embodiment of Example 1 of this application.

[0028] Figure 5 This is a schematic diagram of an embodiment of Example 2 of this application.

[0029] In the diagram: 1-First dental brace, 2-Second dental brace, 3-First anterior guide plate, 4-Second anterior guide plate, 5-Magnet Detailed Implementation

[0030] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0031] Example 0

[0032] refer to Figures 1-3 As shown, an anterior guide plate type magnetic open face retainer is used for dual retention of tooth position and jaw position after orthodontic treatment or after jaw position reconstruction and occlusal reconstruction. It includes a first tooth bracket 1, a second tooth bracket 2, a first anterior tooth guide plate 3, a second anterior tooth guide plate 4, and a magnet 5.

[0033] The first dental brace 1 and the second dental brace 2 are arranged opposite each other, that is, the first dental brace 1 is a maxillary or mandibular dental brace, and the corresponding second dental brace 2 is a mandibular or maxillary dental brace.

[0034] The first brace 1 and the second brace 2 have fenestration structures on the occlusal surfaces of the posterior teeth and the incisal edges of the anterior teeth. These fenestration structures allow the occlusal surfaces or incisal edges of the teeth to be exposed, ensuring the teeth can perform normal cutting, grinding, chewing, and abrasion functions. At the same time, the first brace 1 and the second brace 2 are used to maintain the position of all teeth in the entire dentition.

[0035] The first brace 1 has a first anterior guide plate 3 on the lingual side of the anterior teeth, and the second brace 2 has a second anterior guide plate 4 on the lingual side of the anterior teeth, which is opposite to the first anterior guide plate 3. The first anterior guide plate 3 and the second anterior guide plate 4 are respectively provided with opposing magnets 5 that are magnetically attracted to each other. The magnets 5 on the two guide plates maintain the position of the upper and lower jaws through the attraction of opposite poles.

[0036] When the patient bites, the posterior teeth can make extensive and uniform occlusal contact, the working surfaces of the upper and lower anterior guide plates fit together, and the magnets maintain contact one-to-one. Under the combined action of magnetic positioning and guide plate guidance, it plays a dual role in maintaining tooth and jaw position. It can prevent the overbite and overjet from recurring and deepening after orthodontic treatment in patients with deep overbite and deep overjet, and avoid the "double bite" caused by jaw instability after correction in patients with mandibular retrusion. It also plays a dual role in maintaining tooth and jaw position after temporomandibular joint disorder jaw position reconstruction and occlusal reconstruction.

[0037] The first retainer 1 and the second retainer 2 are transparent thermoformed films, made of thermoplastic resin under vacuum pressure. The first anterior guide plate 3 and the second anterior guide plate 4 are made of light-cured resin. The first anterior guide plate 3 is integrally molded within the first retainer 1, and the second anterior guide plate 4 is integrally molded within the second retainer 2, ensuring the overall structural strength of the retainer. This retainer can be fabricated on a traditional plaster working model or designed and manufactured on a 3D printed working model.

[0038] The first and second braces 1 and 2 are equipped with buccal and lingual wrapping structures that match the entire dentition to maintain tooth position. The openings at the incisal edges of the anterior teeth in the first and second braces 1 and 2 are within 1 / 3 of the incisal edge of the anterior teeth, ensuring the effectiveness of the braces in maintaining tooth position while maximizing the normal use of the incisal edges.

[0039] The first anterior guide plate 3 and the second anterior guide plate 4 are opposing planes or bevels to meet different retention requirements. The first anterior guide plate 3 and the second anterior guide plate 4 are located from the incisal 1 / 3 to the lingual protuberance of the anterior teeth to avoid the guide plates affecting the normal use of the incisal edge.

[0040] Each anterior tooth guide plate is fitted with one or more sets of symmetrical or asymmetrical magnets 5. The magnets 5 are third-generation rare-earth permanent magnets, neodymium iron boron magnets, arranged parallel to the working surface of the guide plate. Depending on the specific needs, the magnets 5 can be rectangular, rhomboid, circular, or compatible with accessories.

[0041] Depending on specific needs, magnet 5 is fixed to the guide plate by embedding, bonding, or sleeve embedding. The surface of magnet 5 is coated with a titanium nitride film. Neodymium iron boron contains iron, which is particularly susceptible to oxidation and corrosion in the oral cavity environment, and may even disintegrate, leading to a decline in magnet performance. By uniformly coating the magnet surface with a titanium nitride film, the chemical properties of titanium nitride are stable, and the film has high hardness, achieving wear resistance and corrosion resistance.

[0042] Example 1

[0043] refer to Figure 4 As shown, an anterior guide-type magnetic open surface retainer is used in this embodiment after orthodontic treatment for patients with closed deep overbite and temporomandibular joint disorder. The anterior guide-type magnetic open surface retainer consists of a transparent heat-pressed film open surface retainer that matches the orthodontic dentition, wraps around the buccal and lingual surfaces of the entire dentition, and has windows on the occlusal surface and the incisal edge of the anterior teeth in the first third, and an anterior guide plate integrally formed therein. The guide plate is a light-cured resin planar guide plate that fits against the lingual surfaces of the upper and lower anterior teeth, and is integrally formed and encapsulated within the full dentition open surface retainer. A set of magnets of opposite poles is embedded within the guide plate. When the patient bites, the natural posterior teeth can make uniform occlusal contact, the working surfaces of the upper and lower anterior guide plates fit together, and the magnets maintain one-to-one contact.

[0044] The rest is the same as in Example 0.

[0045] Example 2

[0046] refer to Figure 5 As shown, an anterior guide-type magnetic open surface retainer is used in this embodiment for patients with mandibular retrusion and temporomandibular joint disorder after orthodontic restoration to guide the mandible forward. The anterior guide-type magnetic open surface retainer consists of a transparent heat-pressed film open surface retainer that matches the orthodontically restored dentition, wraps around the buccal and lingual surfaces of the entire dentition, and has windows on the occlusal surface and the incisal edge of the anterior teeth in the first third, and an anterior guide plate integrally formed therein. The guide plate is a light-cured resin inclined guide plate that fits the lingual surfaces of the upper and lower anterior teeth, and is integrally formed and encapsulated within the full dentition open surface retainer. A set of heteropole magnets is embedded within the guide plate. When the patient bites, the natural posterior teeth can make uniform occlusal contact, the working surfaces of the upper and lower anterior guide plates fit together, and the magnets maintain one-to-one contact.

[0047] The rest is the same as in Example 0.

[0048] 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.

[0049] 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 front teeth guide plate type magnetic open-face retainer comprising a first mouthpiece (1) and a second mouthpiece (2) of the opposite jaw, characterized in that: The first brace (1) and the second brace (2) have a window structure on the occlusal surface of the posterior teeth and the incisal edge of the anterior teeth. The first brace (1) has a first anterior tooth guide plate (3) on the lingual side of the anterior teeth, and the second brace (2) has a second anterior tooth guide plate (4) opposite to the first anterior tooth guide plate (3) on the lingual side of the anterior teeth. The first anterior tooth guide plate (3) and the second anterior tooth guide plate (4) are respectively provided with opposing and magnetically attracted magnets (5).

2. The front tooth guide magnetic open-face retainer of claim 1, wherein: The first dental crown (1) and the second dental crown (2) are transparent heat-pressed films, the first anterior guide plate (3) and the second anterior guide plate (4) are light-cured resins, the first anterior guide plate (3) is wrapped inside the first dental crown (1) and integrally formed, and the second anterior guide plate (4) is wrapped inside the second dental crown (2) and integrally formed.

3. The front tooth guide magnetic open-face retainer of claim 1, wherein: The first and second braces (1) are provided with buccal and lingual wrapping structures that match the entire dentition.

4. The front tooth guide magnetic open-face retainer of claim 1 or 3, wherein: The opening structure of the first brace (1) and the second brace (2) at the anterior incisal edge is within 1 / 3 of the anterior incisal edge.

5. The front tooth guide magnetic open-face retainer of claim 1, wherein: The first anterior tooth guide plate (3) and the second anterior tooth guide plate (4) are opposing planes or inclined planes.

6. The front tooth guide magnetic open-face retainer of claim 1 or 5, wherein: The first anterior guide plate (3) and the second anterior guide plate (4) are located at the incisal edge 1 / 3 to the lingual protuberance of the anterior teeth.

7. The front tooth guide magnetic open-face retainer of claim 1, wherein: The magnet (5) is a rare-earth permanent magnet, neodymium iron boron, which is a powerful magnet.

8. The front teeth guide plate type magnetic open-face retainer according to claim 1 or 7, characterized in that: The magnets (5) are all rectangular, rhomboid, circular or accessory-adaptive shapes.

9. The front tooth guide magnetic open-face retainer of claim 1, wherein: The magnet (5) is fixed to the guide plate by embedding, bonding or sleeve embedding.

10. The front teeth guide plate type magnetic open-face retainer according to claim 1 or 9, characterized in that: The surface of the magnet (5) is coated with a titanium nitride film.

Images