Bracket-free invisible appliance with mandible leading-forward function

Abstract

The invention discloses a bracket-free invisible appliance with a lower jaw leading-forward function. The bracket-free invisible appliance comprises an upper jaw appliance body and a lower jaw appliance body, convex bubbles are arranged on the cheek side surfaces of the rear tooth areas of the upper jaw appliance body and the lower jaw appliance body, the convex bubbles are wide in lower parts and narrow in upper parts, the cross sections of the convex bubbles are gradually narrowed along the jaw aligning direction, and concave step reinforcing ribs are arranged on the cheek side surfaces of the convex bubbles; the convex bubbles are arc-shaped, convex upwards and concave downwards, and the radian is gradually increased in the vertical direction from bottom to top; the slope side faces of the upper jaw appliance body and the lower jaw appliance body are force application faces, when the upper jaw and the lower jaw are meshed together, the mesial slope side face of the convex bubble of the upper jaw appliance makes contact with the mesial slope side face of the convex bubble of the lower jaw appliance to serve as a contact face, and the contact face is an irregular curved face. Other areas of the bottom surfaces of the convex bubbles of the upper jaw appliance body and the lower jaw appliance body are in smooth transition connection with tooth surfaces of corresponding upper and lower jaw rear teeth and are provided with connecting blocks.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of orthodontics, and particularly relates to a bracket-free invisible appliance with mandibular forward guiding function. BACKGROUND

[0002] The early dental and maxillofacial deformities of children are mainly caused by oral bad habits or functional abnormalities, and are manifested as abnormal shape of dental arch or position relationship between jaws.

[0003] In the technical field of orthodontic treatment, functional oral treatment is a conventional treatment method for children and teenagers during the deciduous tooth period and the replacement tooth period. Traditional functional treatment techniques mainly include twinblock appliance, headgear-muscle activator, biological regulator, Frankel functional regulator and the like. The traditional functional treatment techniques have good treatment effects and are generally recognized by doctors and patients, but also have some unavoidable shortcomings. For example, the twinblock appliance has the advantages of shorter treatment time and higher patient compliance, but still cannot simultaneously correct bone problems, align teeth, provide oral function training function and affect pronunciation due to large size. The headgear-muscle activator needs to be worn with a headgear, is not aesthetic, and cannot simultaneously align teeth during functional treatment. The Frankel functional regulator can solve part of the early dental and maxillofacial deformities, but cannot simultaneously align teeth during functional treatment, and needs complex technical work for production and has a large size and is not aesthetic.

[0004] In recent years, the bracket-free invisible technology has been continuously developed, and the functional bracket-free invisible appliance has emerged as the times require. With the advantages of convenient production, invisible appearance, convenient wearing and the like, the functional bracket-free invisible appliance is favored by more and more doctors and patients. At present, the functional bracket-free invisible appliance is mostly formed by pressing a film, and the functional component and the main body of the appliance are integrally formed as a shell, and the functional component is basically a hollow bubble structure. Patent CN202321004939 discloses a bracket-free invisible appliance for guiding the mandible forward, which comprises an upper dental appliance and a lower dental appliance. The upper dental appliance has an upper protrusion on the buccal side of the posterior tooth area, and the lower dental appliance has a lower protrusion on the buccal side of the posterior tooth area. The upper protrusion is located at the distal position, and the lower protrusion is located at the proximal position. When the upper dental appliance and the lower dental appliance are occluded, the upper protrusion and the lower protrusion are in contact. The upper protrusion and / or the lower protrusion are convex bubbles protruding from the buccal side of the dental appliance, and the convex bubbles are in communication with the cavity of the dental appliance. When the bracket-free invisible appliance is used to treat cases of mandibular retrusion, it is easy to cut the patient's buccal side, and because the length is not enough, the two protrusions are often separated during wearing, thereby losing the function. In addition, the production process is difficult to remove the film, and the scrap rate is too high.

[0005] Therefore, it is of great significance to design a functional invisible appliance capable of treating mandibular retrusion, having convenient production process, not harming the patient's oral tissue and not being easy to be removed. SUMMARY

[0006] To solve the above problems of functional invisible aligner, the application provides a bracket-free invisible aligner with mandibular protraction function.

[0007] To achieve the above object, the technical scheme of the application is as follows: a bracket-free invisible aligner with mandibular protraction function, comprising a maxillary aligner body and a mandibular aligner body; the maxillary aligner body and the mandibular aligner body have a convex bubble on the buccal side of the posterior tooth area, the convex bubble is wide at the bottom and narrow at the top, the cross section along the occlusal direction gradually narrows, and the buccal side of the convex bubble has an inner concave step reinforcing rib; the convex bubble is arc-shaped, convex upward and concave downward, and the curvature gradually increases from the vertical direction. The slope side of the maxillary aligner body and the mandibular aligner body is a force application surface, when the upper and lower jaws are occluded together, the convex bubble of the maxillary aligner contacts the distal convex bubble of the mandibular aligner as a contact surface, and the contact surface is an irregular curved surface. The remaining area of the bottom surface of the convex bubble of the maxillary aligner body and the mandibular aligner body is connected to the tooth surface of the corresponding upper and lower posterior teeth in a smooth transition manner, and a connecting block is arranged.

[0008] Preferably, the distal surface of the convex bubble of the maxillary aligner has a slope surface, and the angle is 50-80 degrees, and the recommended angle is 70 degrees.

[0009] Preferably, the distal surface of the convex bubble of the maxillary aligner has a slope surface, and the angle is 50-80 degrees, and the recommended angle is 70 degrees.

[0010] Preferably, the distal surface of the convex bubble of the maxillary aligner has a slope surface, and the angle is 50-80 degrees, and the recommended angle is 70 degrees.

[0011] The application has the following advantages: 1) convenient process and easy demolding; 2) reducing harm to patients; 3) self-removal and wearing; 4) preventing the aligner from falling off during wearing; and 5) improving the symptoms of mandibular retrusion, aligning the teeth, and improving the efficiency of treatment. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure diagram of the maxillary convex bubble and the connecting block of the application.

[0013] Figure 2 It is a left view of the maxillary convex bubble and the connecting block of the application.

[0014] Figure 3 It is a structure diagram of the mandibular convex bubble and the connecting block of the application.

[0015] Figure 4 It is an oblique view of the mandibular convex bubble and the connecting block of the application.

[0016] Figure 5This is a schematic diagram of the bite position structure of the present invention.

[0017] Figure 6 This is a schematic diagram of the maxillary orthodontic appliance of the present invention.

[0018] Figure 7 This is a schematic diagram of the mandibular orthodontic appliance of the present invention. Detailed Implementation

[0019] like Figures 1-7 As shown, a bracketless clear aligner with mandibular pre-guided function includes a maxillary aligner body and a mandibular aligner body. Both the maxillary and mandibular aligner bodies have raised bumps on their buccal surfaces in the posterior tooth region. These bumps are wider at the bottom and narrower at the top, gradually narrowing in cross-section along the opposing direction. The buccal surfaces of the bumps have concave reinforcing ribs. The bumps are arc-shaped, convex at the top and concave at the bottom, with the curvature gradually increasing from a vertical position at the bottom to a vertical position at the top (this curvature effectively reduces the probability of the bump cutting into the inside of the mouth during wear, and the reinforcing ribs improve the rigidity and resistance to deformation of the bump). The sloping sides of the maxillary appliance and the mandibular appliance are the force application surfaces. The recommended angle of the sloping surfaces is 70 degrees. When the maxilla and mandible occlude together, the mesial sloping side of the maxillary appliance and the distal sloping side of the mandibular appliance contact each other as the contact surfaces. The contact surfaces are irregular curved surfaces. The remaining areas of the bottom surface of the maxillary appliance body and the mandibular appliance body are smoothly connected to the tooth surfaces of the corresponding maxillary and mandibular posterior teeth, and are provided with connecting blocks (these smoothly connected connecting blocks avoid damage and cost waste during the demolding process, increase the contact area, make the bubble more evenly stressed, and avoid local stress concentration that could lead to bubble deformation and breakage).

[0020] The mesial surface of the maxillary orthodontic appliance with a sloping surface is parallel to the distal surface of the mandibular orthodontic appliance with a sloping surface, and the distance between them is 0~5mm.

[0021] The upper and lower convex bubbles are the force-applying components, and the dentition of the appliance body is consistent with the target dentition.

[0022] When the patient puts the appliance into their mouth and closes their mouth, the sloping surfaces of the upper and lower jaw cavities come into contact with each other. The maxillary convex cavities push the mandibular cavities, causing the mandible to move in the sagittal and vertical directions, thereby opening the patient's bite and improving the symptoms of mandibular retrusion.

[0023] In the fabrication of this invention, a digital dental model of the patient is first reconstructed. Then, bubble molds are placed on the upper and lower jaw surfaces of the digital dental model. Bubble molds exist in pairs, with the ramp surfaces of bubble mold 1 and bubble mold 2 parallel and in surface contact or with a certain gap (0-1.5mm). Boolean processing is performed on bubble mold 1 and the lower jaw digital dental model to create the contact surface between the lingual side of bubble mold 1 and the lower jaw digital dental model. Similarly, Boolean processing is performed on bubble mold 2 and the upper jaw digital dental model to create the contact surface between the lingual side of bubble mold 2 and the upper jaw digital dental model. Bubble mold 1 is then exported and printed as a 3D dental model following the upper jaw model, and bubble mold 2 is exported and printed as a 3D dental model following the lower jaw model. Using a thermoplastic molding process, a diaphragm is pressed onto the 3D dental models of the upper and lower jaws to create the aligner. Following a series of processes including demolding, cutting, polishing, and sterilization, the bracketless invisible aligner is finally fabricated. The shape, position, and height of the bubble molds are customized according to the patient's teeth.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bracketless clear aligner with mandibular pre-guiding function, comprising a maxillary aligner body and a mandibular aligner body; the maxillary and mandibular aligner bodies have protrusions on their buccal surfaces in the posterior tooth region, the protrusions being wider at the bottom and narrower at the top, gradually narrowing in cross-section along the opposing direction, and the buccal surfaces of the protrusions having concave step-reinforcing ribs; the protrusions are arc-shaped, convex at the top and concave at the bottom, with the curvature gradually increasing from the bottom vertical direction to the top vertical direction. The sloping sides of the maxillary appliance body and the mandibular appliance body are the force application surfaces. When the maxilla and mandible occlude together, the mesial sloping side of the maxillary appliance bubble and the distal sloping side of the mandibular appliance bubble contact each other as the contact surfaces. The contact surfaces are irregular curved surfaces. The maxillary appliance body and the mandibular appliance body have a smooth transition between their convex bottom surfaces and the corresponding upper and lower posterior teeth surfaces, with connecting blocks provided.

2. The bracketless invisible aligner with mandibular pre-guiding function according to claim 1, characterized in that, The distal surface of the maxillary orthodontic appliance has a sloping surface with an angle of 50 to 80 degrees.

3. The bracketless invisible aligner with mandibular pre-guiding function according to claim 1, characterized in that, The distal surface of the mandibular appliance has a sloping surface with an angle of 50 to 80 degrees.

4. The bracketless invisible aligner with mandibular pre-guiding function according to claim 1, characterized in that, The mesial surface of the maxillary orthodontic appliance with a sloping surface is parallel to the distal surface of the mandibular orthodontic appliance with a sloping surface, and the distance between them is 0~5mm.

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