Segmented orthodontic appliance for vertical decompensation of anterior and posterior teeth and method of manufacturing the same

Abstract

The application discloses a segmented orthodontic appliance for vertical non-adjustment of anterior and posterior teeth, comprising an anterior tooth mouth body and a posterior tooth mouth body, the anterior tooth mouth body comprises a plurality of anterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms, the posterior tooth mouth body comprises a plurality of posterior tooth wrapping bodies, adjacent anterior tooth wrapping bodies are rigidly connected or connected through force arms; the anterior tooth mouth body and the posterior tooth mouth body are rigidly connected or connected through force arms; the force arms are used for directional force on the anterior teeth and / or the posterior teeth, and / or the force arms are used for force on the buccal side and / or the lingual side; there are at least two force arms, and there are at least one anterior tooth wrapping body or at least one posterior tooth wrapping body between adjacent force arms. The application adds a specific stress interruption mechanical structure in the middle segment of the tooth arch of the invisible appliance, so that the force mode of the appliance is optimized, and the treatment efficiency of the vertical non-adjustment of the anterior and posterior teeth is improved.

Description

Technical Field

[0001] This invention relates to the field of orthodontic technology, and in particular to a segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth and its manufacturing method. Background Technology

[0002] Because invisible aligners wrap around the tooth surface and are secured with attachments, they have some limitations in correcting vertical misalignment between the anterior and posterior teeth, as follows:

[0003] 1. Orthodontic appliances are not very efficient at elongating teeth.

[0004] Current invisible aligners typically use attachments to retain and generate corrective force to elongate teeth. However, because the tooth elongation movement pattern is consistent with the direction of aligner dislocation, the tooth elongation movement efficiency is poor, making it difficult to quickly correct vertical misalignment between the front and back teeth.

[0005] 2. High patient compliance requirements.

[0006] Currently, invisible aligners typically use attachments to retain and generate corrective force to elongate teeth. If patients do not wear the aligners for a sufficient period of time or do not use bite gel for support, the aligners may not fit properly against the teeth.

[0007] 3. The step distance of the orthodontic appliance limits the efficiency of tooth movement.

[0008] Currently, each clear aligner deforms by approximately 0.25mm, making its treatment efficiency far less than that of traditional aligners. Furthermore, since the aligners completely enclose the dentition, they cannot simultaneously achieve anterior tooth elongation and posterior tooth intrusion to correct open bite or posterior tooth elongation and anterior tooth intrusion to correct deep overbite. Summary of the Invention

[0009] To overcome the above limitations, this invention aims to provide a segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth. The design incorporates a specific stress interruption mechanical structure in the middle section of the dental arch of the clear aligner to optimize the force application mode of the appliance and improve the treatment efficiency for vertical misalignment of anterior and posterior teeth.

[0010] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0011] A segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth includes an anterior tooth appliance body and a posterior tooth appliance body. The anterior tooth appliance body includes several anterior tooth wrappers, and adjacent anterior tooth wrappers are rigidly connected or connected by force arms. The posterior tooth appliance body includes several posterior tooth wrappers, and adjacent anterior tooth wrappers are rigidly connected or connected by force arms. The anterior tooth appliance body and the posterior tooth appliance body are rigidly connected or connected by force arms.

[0012] The force arm is used to apply force to the anterior teeth and / or posterior teeth in a directional manner, and / or, the force arm is used to apply force to the buccal side and / or lingual side;

[0013] There are at least two lever arms, and there is at least one anterior tooth wrapping or at least one posterior tooth wrapping between adjacent lever arms.

[0014] Preferably, the force-applying arm includes an elastic structure with elastic restoring force.

[0015] More preferably, the elastic restoring force includes: a downward or upward elastic restoring force at the connection end between the force-applying arm and the anterior tooth brace body, and / or an upward or downward elastic restoring force at the connection end between the force-applying arm and the posterior tooth brace body.

[0016] Preferably, the elastic structure includes a bending structure.

[0017] More preferably, the curved structure is a single-curved structure or a multi-curved structure.

[0018] Furthermore, the present invention also includes an auxiliary traction device, which is rigidly connected to the anterior or posterior tooth wrapping body between two adjacent force-applying arms, and the auxiliary traction device includes a protruding structure.

[0019] Preferably, the anterior tooth wrapping body is fitted to the crown of the anterior tooth, and the posterior tooth wrapping body is fitted to the crown of the posterior tooth.

[0020] Preferably, the anterior tooth brace body and / or posterior tooth brace body are provided with retention attachments, which are bonded to the tooth body.

[0021] Furthermore, there are two anterior tooth brace bodies and two posterior tooth brace bodies, which are adapted to the maxilla and mandible respectively.

[0022] The present invention also discloses a method for manufacturing a segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth, comprising manufacturing the force arm by 3D printing, casting, hot pressing or injection molding.

[0023] Preferably, the manufacturing method includes the following steps:

[0024] S1. Obtain a digital model of the patient's dentition and soft tissues, including the three-dimensional morphology of the dentition and periodontal soft tissues and the occlusal contact of the upper and lower jaws;

[0025] S2. In the tooth arrangement software, simulate the upper and lower teeth to establish the maximum occlusal contact position, check the occlusal contact of each tooth, move the teeth to remove heavy interference, and align the upper and lower dentition.

[0026] S3. Import the dental arch model into the 3shape software to form the main body model of the orthodontic appliance. Place the force arm between the anterior and posterior aligner bodies. The length and thickness of the force arm can be changed or the vertical position of the anterior and posterior aligner bodies can be adjusted according to different orthodontic needs.

[0027] S4. Trim the model of the main body of the orthodontic appliance, remove burrs and imperfections, and retain part of the contact surface with the palatal mucosa and gingival mucosa.

[0028] S5. Depending on the orthodontic needs, place an occlusal plane guide plate or inclined plane guide plate on the lingual side of the upper anterior teeth to open the bite or guide the mandible. Its size, shape and height can be set as needed.

[0029] S6. Export the complete shape of the orthodontic appliance.

[0030] The beneficial effects of this invention are as follows:

[0031] 1. This invention adds a specific stress interruption mechanical structure (i.e., force arm, etc.) to the middle section of the dental arch of the invisible aligner, which can optimize the force application mode of the aligner and improve the orthodontic efficiency.

[0032] 2. The present invention uses an auxiliary traction device to provide a point for applying force with rubber bands during treatment of intermaxillary traction. Its shape and structure are smooth and do not irritate the mucosal tissue. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of the present invention.

[0034] Figure 2 for Figure 1 A schematic diagram from another viewing angle.

[0035] Figure 3 for Figure 1 Rear view.

[0036] Figure 4 This is a schematic diagram of the structure of Example 2.

[0037] Figure 5 This is a schematic diagram of the structure of Example 3.

[0038] Figure 6 This is a schematic diagram of the structure of Example 4.

[0039] Figure 7 This is a schematic diagram of the structure of Example 5. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings.

[0041] Example 1

[0042] This embodiment discloses a segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth. This segmented orthodontic appliance is designed by adding a specific stress interruption mechanical structure to the middle section of the dental arch of the clear aligner to optimize the force application mode of the orthodontic appliance and improve the treatment efficiency of vertical misalignment of anterior and posterior teeth.

[0043] like Figure 1 , Figure 2 , Figure 3 As shown: In this embodiment, a mechanical structure is set up in the anterior tooth part of the orthodontic appliance to adjust the transmission mode of the orthodontic force and realize the rapid intrusion of the anterior teeth. Specifically, it includes anterior tooth appliance body 1, posterior tooth appliance body 2, force arm 3, retention attachment 4, and auxiliary traction device 5.

[0044] The braces consist of: the anterior tooth brace body 1 and the posterior tooth brace body 2, which fit and wrap tightly around the tooth crowns; the retention device 4 forms stable retention through partial clamping or complete wrapping; the force arm 3 is an elastic structure that provides orthodontic force through thermal activation or its own material elasticity, and achieves controllable and directional force application to the teeth through mechanical design; the auxiliary traction device 5 is a protruding structure on the brace body.

[0045] Both the anterior tooth brace body 1 and the posterior tooth brace body 2 consist of two parts: the maxilla and the mandible.

[0046] The anterior tooth brace body 1 and the posterior tooth brace body 2 can be selected for single or multiple teeth according to the needs of indentation or extension.

[0047] The force-applying arm 3 is a highly elastic curved structure. This curved structure can be composed of a single curve or multiple curves. It can apply linear force to the tooth on a single plane or apply bidirectional force on the buccal and lingual sides, or it can control tooth movement in a three-dimensional plane.

[0048] The force arm 3 can be placed at any position on the anterior or posterior braces body according to the orthodontic needs.

[0049] The retention attachment 4 is bonded to the tooth surface with materials such as resin and ceramic. It uses the anterior tooth crown body 1, the posterior tooth crown body 2 and the retention attachment 4 to hold and enhance the retention force of the crown.

[0050] The auxiliary traction device 5 is a raised structure that is generated simultaneously during the production of the orthodontic appliance. It provides a point for applying force to the elastic band worn during treatment. Its shape and structure are smooth and do not irritate the mucosal tissue.

[0051] This type of stress-interrupted mechanical structure can be produced in specific areas of the invisible orthodontic appliance using methods such as 3D printing, casting, hot pressing, and injection molding.

[0052] Example 2

[0053] like Figure 4 As shown in Example 1, this example discloses an application method of this segmented orthodontic appliance for patients with low-angle or even-angle deep overbite, which can raise the posterior teeth while cooperating with the anterior teeth to flat-guide and depress the anterior teeth.

[0054] Example 3

[0055] like Figure 5 As shown in Example 1, this example discloses an application method of this segmented orthodontic appliance for patients with high-angle deep overbite, which removes the anterior teeth guide and only uses this segmented orthodontic appliance to indent the anterior teeth.

[0056] Example 4

[0057] like Figure 6 As shown in Example 1, this example discloses an application method of this segmented orthodontic appliance for patients with open bite, which uses this segmented orthodontic appliance to depress the posterior teeth and elongate the anterior teeth at the same time.

[0058] Example 5

[0059] like Figure 7 As shown in Example 1, this example discloses an application method of this segmented orthodontic appliance for patients with mandibular retrusion, deep overbite and deep overjet. By using this segmented orthodontic appliance to depress the anterior teeth and raise the posterior teeth to open the bite, the inclined guide plate can be used to guide the mandible forward, promote the growth and development of the mandible, and correct the sagittal developmental disorder of the mandible.

[0060] Example 6

[0061] This embodiment discloses the specific manufacturing steps of this orthodontic appliance as follows:

[0062] S1. Obtain a digital model of the patient's dentition and soft tissues, including the three-dimensional morphology of the dentition and periodontal soft tissues and the occlusal contact of the upper and lower jaws;

[0063] S2. In the tooth arrangement software, simulate the upper and lower teeth to establish the maximum occlusal contact position, check the occlusal contact of each tooth, move the teeth to remove heavy interference, and align the upper and lower dentition.

[0064] S3. Import the dental arch model into the 3shape software to form the main body of the orthodontic appliance. Place the force arm 3 between the anterior tooth aligner body 1 and the posterior tooth aligner body 2. The length, thickness or vertical position of the force arm can be changed according to different orthodontic needs.

[0065] S4. Trim the model, remove burrs and imperfections, while retaining part of the contact surface with the palatal mucosa and gingival mucosa;

[0066] S5. Depending on the orthodontic needs, an occlusal plane guide plate or an inclined plane guide plate can be placed on the lingual side of the upper anterior teeth to open the bite or guide the mandible. Its size, shape and height can be set as needed.

[0067] S6. Export the complete shape of the orthodontic appliance for further 3D printing.

[0068] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth, characterized in that, The device includes an anterior tooth brace body and a posterior tooth brace body. The anterior tooth brace body includes several anterior tooth wrappers, and adjacent anterior tooth wrappers are rigidly connected or connected by a force arm. The posterior tooth brace body includes several posterior tooth wrappers, and adjacent anterior tooth wrappers are rigidly connected or connected by a force arm. The anterior tooth brace body and the posterior tooth brace body are rigidly connected or connected by a force arm. The force arm is used to apply force to the anterior teeth and / or posterior teeth in a directional manner, and / or, the force arm is used to apply force to the buccal side and / or lingual side; There are at least two lever arms, and there is at least one anterior tooth wrapping or at least one posterior tooth wrapping between adjacent lever arms.

2. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 1, characterized in that, The lever arm includes an elastic structure and has elastic restoring force.

3. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 2, characterized in that, The elastic restoring force includes: the downward or upward elastic restoring force of the connection end between the force-applying arm and the anterior tooth brace body, and / or, the upward or downward elastic restoring force of the connection end between the force-applying arm and the posterior tooth brace body.

4. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 3, characterized in that, The elastic structure includes a bending structure.

5. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 4, characterized in that, The curved structure can be a single-curved structure or a multi-curved structure.

6. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to any one of claims 1-5, characterized in that, It also includes an auxiliary traction device, which is rigidly connected to the anterior or posterior tooth wrapping body between two adjacent force-applying arms, and the auxiliary traction device includes a protruding structure.

7. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 6, characterized in that, The anterior tooth wrapping body fits into the crown of the anterior tooth, and the posterior tooth wrapping body fits into the crown of the posterior tooth.

8. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 6, characterized in that, The anterior and / or posterior dental crown bodies are provided with retention attachments, which are bonded to the tooth body.

9. The segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth according to claim 7 or 8, characterized in that, There are two sets of the anterior and posterior dental braces, which are adapted to the maxilla and mandible respectively.

10. A method for manufacturing a segmented orthodontic appliance for vertical misalignment of anterior and posterior teeth as described in any one of claims 1-5, characterized in that, The lever arm is manufactured by 3D printing, casting, hot pressing, or injection molding.

11. The manufacturing method according to claim 10, characterized in that, Includes the following steps: S1. Obtain a digital model of the patient's dentition and soft tissues, including the three-dimensional morphology of the dentition and periodontal soft tissues and the occlusal contact of the upper and lower jaws; S2. In the tooth arrangement software, simulate the upper and lower teeth to establish the maximum occlusal contact position, check the occlusal contact of each tooth, move the teeth to remove heavy interference, and align the upper and lower dentition. S3. Import the dental arch model into the 3shape software to form the main body model of the orthodontic appliance. Place the force arm between the anterior and posterior aligner bodies. The length and thickness of the force arm can be changed or the vertical position of the anterior and posterior aligner bodies can be adjusted according to different orthodontic needs. S4. Trim the model of the main body of the orthodontic appliance, remove burrs and imperfections, and retain part of the contact surface with the palatal mucosa and gingival mucosa. S5. Depending on the orthodontic needs, place an occlusal plane guide plate or inclined plane guide plate on the lingual side of the upper anterior teeth to open the bite or guide the mandible. Its size, shape and height can be set as needed. S6. Export the complete shape of the orthodontic appliance.

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