Invisible appliance capable of opening deep covering

Abstract

The utility model relates to an invisible appliance capable of opening deep covering, which comprises a tooth socket, the tooth socket comprises an anterior tooth part coated on anterior teeth and a molar part coated on posterior molars on two sides, a retainer is arranged in the tooth socket of the molar part, and the tooth socket has reverse curvature opposite to the curvature of a dentition to be corrected in the vertical direction. By changing the curvature of the tooth socket in the vertical direction, the tooth socket has reverse curvature, the molar part fastened on the posterior molar is used for providing anchorage for the lowering movement of the anterior tooth, the anterior tooth is forced to be lowered and the posterior molar is stretched, and the anterior tooth and the posterior molar are synchronously and harmoniously carried out, so that the problems that the existing tooth socket has no vertical orthodontic force, and the orthodontic effect is poor are solved. According to the utility model, the problems that vertical correction force can only be generated depending on the occlusion state of teeth, and the correction efficiency of opening deep combination is low are solved, 24-hour real-time correction can be realized, the correction time is shortened, and the correction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bracketless invisible orthodontic technology, specifically to an invisible orthodontic appliance that opens up deep overbite. Background Technology

[0002] Deep overbite is a malocclusion caused by abnormal vertical development of the maxillary and mandibular dental arches and / or the maxillae. Normal occlusion is when the upper anterior teeth overlap the lower anterior teeth by no more than one-third of the crown length of the lower anterior teeth. Deep overbite, on the other hand, is when the incisal edge of the upper anterior teeth overlaps the crown length of the lower anterior teeth by more than one-third, or when the lower anterior teeth bite onto the lingual side of the upper anterior teeth by more than one-third.

[0003] Deep overbite not only affects oral health, but also facial aesthetics. Specifically: (1) Deep overbite forces the mandible to be in a posterior position. Due to the increased pressure on the temporomandibular joint, it is easy to cause joint pain, clicking and other symptoms. Due to the increased occlusal distance between the upper and lower teeth, it stimulates the excessive growth of the masticatory muscles, which will cause excessive wear of the teeth, and then lead to tooth pain, sensitivity and other problems. In addition, some people may even bite their upper gums frequently, causing occlusal trauma. (2) Too deep occlusion can easily lead to a short lower half of the face, a receding mandible, and a short chin, resulting in facial disharmony and affecting facial aesthetics.

[0004] In the field of orthodontics, effectively opening the anterior occlusion has always been a key focus and challenge in treating deep overbite. Clinically, micro-screw implants are commonly used to increase anchorage and treat deep overbite. In recent years, the placement and usage of micro-screw implants have varied, with most commonly placed between the roots / cusps of the maxillary anterior teeth, connected to the upper anterior brackets via rubber chains. However, this method suffers from poor results with labially inclined anterior teeth, poor stability of the micro-screw implants, and a tendency to damage the anterior tooth roots and gingiva. Therefore, clinicians have been seeking a more comfortable and safer method to address this issue in recent years.

[0005] Chinese utility model patent CN212679293U discloses an adjustable invisible aligner. The adjustment device is formed through the occlusion of the upper and lower jaws. For patients with malocclusion, reverse occlusion, and deep overbite, it guides the patient to bite to the ideal occlusal position, i.e., the target position. After the patient bites to the ideal occlusal position, the jawbone will reach the new occlusal position. The muscles, ligaments, and condyles of the occlusal system will be remodeled, realizing the mandible to be adjusted backward, laterally, or forward, and forming the adjustment device. The adjustment device, combined with the bracketless invisible aligner body, has a stable occlusal relationship. Since the adjustment of the adjustable invisible aligner is operated according to the actual occlusal relationship of each patient, the formed aligner can better meet the actual needs of the patient, making the patient have a stable and repeatable occlusal relationship. It can simultaneously perform tooth alignment and jawbone adjustment, shorten the orthodontic treatment cycle, and provide a better user experience. However, the corrective force of this adjustable clear aligner is generated by the force formed by the occlusion of the upper and lower jaws acting on the clear aligner, and the generation of the corrective force is highly dependent on the occlusal state of the teeth.

[0006] Chinese utility model patent CN213607025U discloses an orthodontic device for indenting anterior teeth and guiding the mandible forward, including an invisible aligner. The aligner features a cavitation inclined guide plate on the maxillary lingual anterior tooth region. This cavitation inclined guide plate has a crescent-shaped structure, and its height is adapted to the occlusal plane. Its structure is integrated with the invisible aligner, utilizing the cavitation inclined guide plate to enhance the forward movement of the mandible, combining the functions of a flat guide plate indenting anterior teeth and elevating posterior teeth. By changing the invisible aligner weekly, it can correct mandibular retrusion and address symptoms such as deep overbite, deep overjet, and mandibular retrusion in malocclusion. The corrective force of this orthodontic device for indenting anterior teeth and guiding the mandible forward is also generated by the action and reaction forces of the teeth on the cavitation inclined guide plate of the invisible aligner during occlusion; that is, the corrective force for opening deep overbite is highly dependent on the occlusal state of the teeth.

[0007] Chinese utility model patent CN214318167U discloses a customized temporomandibular joint repositioning occlusal splint, comprising an integrally molded occlusal splint body. The labial and lingual surfaces of the splint body form the upper and lower alveoli, which are positioned on the upper and lower sides of the splint body, respectively. A lingual bevel is provided below the lingual surface to guide the mandibular teeth into position. The labial surface covers part of the labial surface of the upper and lower dentition to maintain the position of the mandible and restrict its movement. The position of the mandibular dentition is determined through three methods: muscle deprogramming, mandibular protrusion, and disc repositioning. While this occlusal splint is suitable for occlusal treatment of temporomandibular joint disorders caused by malocclusion, especially deep overbite and deep overjet, it is particularly suitable for the repositioning and maintenance of the mandibular dentition after disc repositioning following secondary jaw deformities. However, the corrective force of this customized temporomandibular joint repositioning occlusal pad is also generated by the action and reaction forces of the teeth on the cavitation inclined guide plate of the invisible aligner during occlusion. That is, the corrective force to open the deep overbite is highly dependent on the occlusal state of the teeth.

[0008] Therefore, it can be seen that existing invisible aligners / occlusal splints do not have vertical corrective force. Their corrective force for opening deep overbite mainly relies on the action and reaction forces generated when the upper and lower teeth bite together. In short, the corrective force for opening deep overbite is highly dependent on the occlusal state of the teeth, is intermittent, and cannot achieve real-time correction of the teeth. Utility Model Content

[0009] In view of the above problems, this utility model provides an invisible aligner for opening deep overbite. By setting the curvature of the aligner in the vertical direction, the aligner has a reverse curvature in the vertical direction, which solves the problem that existing aligners have no vertical corrective force and can only rely on the occlusal state of the teeth to generate vertical corrective force, resulting in low orthodontic efficiency in opening deep overbite. This utility model can realize 24-hour real-time orthodontic treatment, shorten the treatment time, and improve the orthodontic efficiency.

[0010] The technical solution of this utility model is as follows: an invisible orthodontic appliance for opening deep overbite, comprising a brace, the brace comprising an anterior portion covering the anterior teeth and a molar portion covering the posterior molars on both sides, a retainer is provided inside the brace of the molar portion, the brace has a reverse curvature in the vertical direction, that is, from the posterior molars to the anterior teeth, the curvature of the brace is opposite to the curvature of the dentition to be corrected; the retainer allows the molar portion of the brace to be more securely fixed to the posterior molars, thereby providing sufficient support for the intrusion movement of the anterior teeth, forcing the anterior teeth to be intruded and the posterior teeth to be elongated, and the two proceed synchronously and in coordination.

[0011] Regarding the setting of reverse curvature, the following discussion will cover two cases:

[0012] (1) If the deep overbite is caused by the anterior teeth of the lower row protruding too much upward, then the lower row of teeth usually has a concave arc curvature from the posterior molars to the anterior teeth. In this case, a brace with the opposite curvature is used, that is, the lower brace used has an upward arching reverse curvature from the posterior molars to the anterior teeth. The lower brace with the upward arching reverse curvature, combined with the molar part that can be fastened to the molars, provides support for the indentation movement of the anterior teeth, forcing the anterior teeth to be indented and the posterior teeth to elongate, and the two are carried out in a synchronous and coordinated manner.

[0013] (2) If the deep overbite is caused by the anterior teeth of the upper row being too downwardly misaligned, then the upper row of teeth usually has an upward arched curve from the posterior molars to the anterior teeth. In this case, a brace with the opposite curve is used, that is, the upper brace used has a downward concave reverse curve from the posterior molars to the anterior teeth. The upper brace with the downward concave reverse curve, combined with the molar part that can be fastened to the molars, provides support for the indentation and movement of the anterior teeth, forcing the anterior teeth to be indented and the posterior teeth to elongate, and the two are carried out in a synchronous and coordinated manner.

[0014] Preferably, the braces are wholly or partially hollowed out at the position corresponding to the occlusal surface of the teeth, exposing the occlusal surface of the teeth, so that patients can wear them while eating.

[0015] Preferably, the brace has curvature reinforcing wires arranged inside it from the posterior molars to the anterior teeth to strengthen and maintain the curvature of the brace.

[0016] Preferably, the curvature reinforcing wire is disposed on the lingual side of the brace.

[0017] Preferably, the curvature reinforcing wire is connected to the retainer inside the molar part of the dental brace to form an integral force transmission structure.

[0018] Preferably, the curvature reinforcing wire and the retainer are formed by bending elastic metal wire.

[0019] The beneficial effects of this invention are as follows: By setting the curvature of the braces in the vertical direction, the braces have a reverse curvature in the vertical direction. Utilizing the molar portion fastened to the posterior molars to provide support for the intrusion and movement of the anterior teeth, the anterior teeth are forced to be intruded while the posterior molars elongate, and both processes occur simultaneously and in coordination. This solves the problem that existing braces lack vertical corrective force and rely solely on the action and reaction forces of the upper and lower teeth during occlusion to generate corrective force. In other words, the vertical corrective force they can generate is highly dependent on the occlusal state of the teeth, resulting in low efficiency in correcting deep overbite. Furthermore, by hollowing out the occlusal surface of the braces, patients can wear them even while eating, increasing the wearing time to achieve 24-hour real-time treatment, which can also effectively shorten treatment time and improve correction efficiency. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the dental arch structure where the anterior teeth of the lower row protrude too upwards, causing a deep overbite.

[0021] Figure 2 This is a schematic diagram of the left side of the brace manufactured using the method of this utility model.

[0022] Figure 3 This is a schematic diagram of the left-side structure of a brace with retainers and curvature reinforcing wires.

[0023] Figure 4 This is a schematic diagram of the hollowed-out occlusal surface of the brace in the embodiment.

[0024] In the diagram: 1. Braces 1.1. Anterior teeth 1.2. Molars 2. Anterior teeth 3. Posterior molars 4. Simplified reference line for curvature of the dentition to be corrected 5. Reference line for reverse curvature of the braces 6. Retention body 7. Curvature reinforcing wire 8. Hollowed-out design. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this utility model. The embodiments and directional terms described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] The specific structure and identification method of this utility model are described below with reference to the accompanying drawings and examples. Example

[0027] like Figure 1 and Figure 2 The illustration shows a case where a deep overbite is caused by excessive upward protrusion of the lower front teeth. An invisible aligner for opening a deep overbite includes a brace 1. The brace 1 includes an anterior portion 1.1 covering the front teeth 2 and a molar portion 1.2 covering the two lateral molars 3. The brace 1 has a vertical curvature consistent with the dentition to be corrected (see [reference]). Figure 1 Reference line for the curvature of the teeth to be corrected 4) The opposite reverse curvature (see Figure 2The braces have a reverse curvature reference line 5), where the reverse curvature refers to the curvature of the braces 1 in the vertical plane from the posterior molar 3 to the anterior tooth 2, which is opposite to the curvature of the dentition to be corrected; the molar portion fastened to the posterior molar 3 provides support for the indentation movement of the anterior tooth 2, forcing the anterior tooth to be indented and the posterior tooth to elongate, and the two proceed synchronously and in coordination. Example

[0028] Current orthodontic braces (also known as invisible aligners / occlusal splints) are generally made of high-molecular-weight polyurethane. Their orthodontic principle relies on the horizontal deformation of adjacent teeth on the braces to move the patient's teeth horizontally accordingly, thus achieving the correction goal. They are suitable for horizontal alignment correction of the dental arch. However, when orthodontic treatment plans require tooth intrusion or elongation, especially in the treatment of deep overbite cases where intrusion of the anterior teeth is necessary, existing braces lack sufficient vertical anchorage (insufficient vertical anchorage) and are difficult to achieve the correction goal, easily leading to the braces slipping off the teeth.

[0029] like Figure 3 As shown in Embodiment 1, the molar portion 1.2 of the dental crown 1 is provided with a retainer 6. The retainer is a semi-enclosed hoop made of bent metal wire. The semi-enclosed hoop is usually positioned between two adjacent molars, and its lower end has a clamping part surrounding the base of the tooth. The retainer 6 allows the molar portion 1.2 of the dental crown 1 to be more securely fastened to the posterior molar 3, thereby providing sufficient support for the intrusion movement of the anterior tooth 2. A curvature reinforcing wire 7 is provided inside the dental crown 1 from the posterior molar 3 to the anterior tooth 2 to strengthen and maintain the curvature of the dental crown. Example

[0030] like Figure 4 As shown, based on Example 2, the brace 1 is partially or completely hollowed out at the position corresponding to the occlusal surface of the teeth, so that the occlusal surface of the teeth is exposed, making it convenient for patients to wear it while eating.

[0031] In other embodiments, if deep overbite is caused by excessive downward displacement of the anterior teeth in the upper row, the upper dentition typically exhibits an upward arched curvature from the posterior molars to the anterior teeth. In this case, a brace with the opposite curvature is used; that is, the upper brace has a concave reverse curvature from the posterior molars to the anterior teeth. This concave reverse curvature, combined with a molar portion that can be securely fastened to the molars, provides support for the intrusive movement of the anterior teeth, forcing the anterior teeth to be intruded and the posterior teeth to elongate, with both processes occurring simultaneously and in coordination. The situation is similar to the aforementioned embodiments and will not be described again here.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A clear aligner for opening a deep overbite, comprising braces, said braces comprising an anterior portion covering the front teeth and a molar portion covering the lateral posterior molars, characterized in that: The dental brace for the molar portion is provided with a retainer, and the dental brace has a reverse curvature in the vertical direction that is opposite to the curvature of the dentition to be corrected.

2. The invisible aligner for opening deep overbite according to claim 1, characterized in that: The braces are partially or completely hollowed out at the occlusal surfaces of the teeth, exposing the occlusal surfaces so that patients can wear them while eating.

3. The invisible aligner for opening deep overbite according to claim 1, characterized in that: The braces are fitted with curvature reinforcing wires that extend from the posterior molars to the anterior teeth to reinforce and maintain the curvature of the braces.

4. The invisible aligner for opening deep overbite according to claim 3, characterized in that: The curvature reinforcing wire is positioned on the lingual side of the brace.

5. The invisible aligner for opening deep overbite according to claim 3, characterized in that: The curved reinforcing wire is connected to the retainer inside the molar part of the brace to form an integral force transmission structure.

6. The invisible aligner for opening deep overbite according to claim 5, characterized in that: The curvature reinforcing wire and the retainer are formed by bending elastic metal wire.

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