Orthodontic system

Abstract

The utility model relates to the field of medical apparatus and instruments, more exactly, to the field of orthodontic appliances, especially to a kind of correction system, including the dental instrument of corresponding to correction plan in turn successively, the dental instrument includes the occlusal plate of at least partial contact with upper and lower jaw teeth when wearing, the lingual side edge of the occlusal plate respectively extends to form the inside wall in the lingual side of dental arch in upper and lower jaw gum direction, the labial side edge of the occlusal plate respectively extends to form outside wall in upper and lower jaw gum direction, the outside wall, the occlusal plate and the inside wall enclose and define the upper groove of upper dental arch and the lower groove of lower dental arch;The upper (lower) surface of the occlusal plate is provided with the upper (lower) depression part of protruding towards the upper jaw tooth to be depressed in the position corresponding to the upper jaw (lower jaw) tooth to be depressed.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, more specifically to the field of orthodontic appliances, and particularly to an orthodontic system. Background Technology

[0002] Malocclusion is one of the three major oral diseases, with a high prevalence. Most malocclusions are deformities caused by congenital genetic factors or acquired environmental factors during growth and development. Malocclusion can cause significant harm to the oral cavity and even the whole body, such as affecting maxillofacial development, oral health, oral function, and facial appearance. Orthodontic treatment is a comprehensive adjustment and correction process involving the teeth, jaws, and maxillofacial region, taking into account both the teeth and the dental arch to achieve balance, stability, and aesthetics.

[0003] For cases with high prevalence such as deep overbite and deep overjet, the upper anterior teeth need to be indented during treatment to harmonize the anterior tooth relationship. For cases with reverse overbite and reverse overjet, the lower anterior teeth need to be indented to adjust the Spee curve, thereby achieving the corrective goal. Traditional fixed orthodontic methods, using brackets and archwires with external anchorage, correct the anterior teeth, resulting in poor aesthetics and comfort. In recent years, invisible orthodontic appliances have become increasingly popular due to their comfort, removability, and aesthetics. Invisible orthodontic technology uses the interaction between the aligner and attachments on the teeth to apply force to achieve anterior tooth indentation. Current technologies, such as patent CN213030884U (orthodontic kit and appliance), use traction components connected to the traction unit and connectors to generate the corrective force that indents the anterior teeth. Patent CN119214810A (Dental System for Occlusal Adjustment and Method for Generating the Same) describes a method for indenting anterior teeth by providing a first adjusting part on the lingual side of the anterior tooth region of a first maxillary shell-like body to adjust the vertical distance between the teeth in the maxillary and mandibular anterior regions. However, during the mixed dentition period in children, the teeth are often misaligned and the dental arch is irregular. Using the above technique can lead to unstable contact with the teeth to be indented, thus failing to effectively transmit the indentation force. Furthermore, the success rate of bonding the attachments to the deciduous teeth is low, and they are prone to falling off. Summary of the Invention

[0004] The technical problem solved by this utility model is to overcome the defects of the prior art and provide an orthodontic system, wherein the upper surface of the occlusal plate of the dental instrument is provided with an maxillary depressor portion protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed, and / or, the lower surface of the occlusal plate is provided with a mandibular depressor portion protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed.

[0005] To solve the above-mentioned technical problems, this utility model provides an orthodontic system, including multiple dental instruments used sequentially according to the orthodontic plan, wherein the dental instrument used first is a first dental instrument, and the dental instrument used later is a second dental instrument; each dental instrument includes an occlusal plate that, when worn, at least partially contacts the upper and lower jaw teeth, wherein the lingual edge of the occlusal plate extends upward and downward towards the mandibular gingiva to form an inner wall located on the lingual side of the dental arch, and the labial and buccal edges of the occlusal plate extend upward and downward towards the mandibular gingiva to form an outer wall, wherein the outer wall, the occlusal plate, and the inner wall form an upper groove defining the upper dental arch and a lower groove defining the lower dental arch; the occlusal plate... The upper surface of the occlusal plate is provided with a maxillary depressor portion protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed. The protrusion height of the maxillary depressor portion of the first dental instrument is a first height, and the protrusion height of the maxillary depressor portion of the second dental instrument is a second height, the second height being greater than the first height; and / or, the lower surface of the occlusal plate is provided with a mandibular depressor portion protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed. The protrusion height of the mandibular depressor portion of the first dental instrument is a third height, and the protrusion height of the mandibular depressor portion of the second dental instrument is a fourth height, the fourth height being greater than the third height.

[0006] Compared to existing technologies, this invention features an orthodontic system where the height of the indentation point gradually increases according to the treatment plan, allowing for a smooth and gradual increase in the orthodontic force applied to the teeth to be indented. This progressive mechanical design better aligns with the biomechanical principle of light force in orthodontics, ensuring patient comfort while guaranteeing effective indentation and significantly reducing the risk of root resorption, pulp damage, and alveolar bone resorption caused by excessive or sudden changes in orthodontic force.

[0007] Optionally, when the upper surface of the occlusal plate is provided with a maxillary depressor portion protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed, in the orthodontic plan, the height of the maxillary depressor portion of any two adjacent dental instruments used later is greater than the height of the maxillary depressor portion of the dental instrument used earlier.

[0008] Optionally, when the lower surface of the occlusal plate has a mandibular intrusion portion protruding towards the mandibular tooth to be intruded at the position corresponding to the mandibular tooth to be intruded, in the orthodontic plan, the height of the mandibular intrusion portion of any two adjacent dental instruments used later is greater than the height of the mandibular intrusion portion of the dental instrument used earlier. This stipulates that throughout the entire orthodontic sequence, any two adjacent appliances follow the rule that the intrusion portion height of the later instrument is greater than that of the earlier instrument. This ensures progressive tooth intrusion, reducing the risk of tissue damage and patient discomfort caused by excessive tooth intrusion.

[0009] Optionally, when the upper surface of the occlusal plate is provided with a maxillary intrusion portion protruding toward the maxillary tooth to be intruded at the position corresponding to the maxillary tooth to be intruded, the difference between the protrusion height of the maxillary intrusion portion and a first preset distance is within a predetermined range. The first preset distance is the sum of the designed intrusion distance of the maxillary tooth to be intruded in the corresponding orthodontic stage of the treatment plan and the vertical distance between the occlusal surface of the maxillary tooth to be intruded and the upper surface of the occlusal plate. By relating the height of the intrusion portion to the sum of the designed intrusion distance and the current gap between the tooth and the occlusal plate, it is ensured that the force applied by each appliance is the force required to achieve the orthodontic goal for that stage, significantly improving the efficiency and safety of the orthodontic treatment.

[0010] Optionally, when the lower surface of the occlusal plate is provided with a mandibular depressing part protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed, the difference between the protrusion height of the mandibular depressing part and the second preset distance is within a predetermined range, wherein the second preset distance is the sum of the designed depressing distance of the mandibular tooth to be depressed in the corresponding orthodontic stage in the orthodontic plan and the vertical upward distance between the occlusal surface of the mandibular tooth to be depressed and the lower surface of the occlusal plate.

[0011] Optionally, when the upper surface of the occlusal plate is provided with a maxillary indentation portion protruding towards the maxillary tooth to be indented at the position corresponding to the maxillary tooth to be indented, the maxillary indentation portion is in the shape of a boss, and the upper surface contour of the maxillary indentation portion is either planar or matches the contour of the occlusal surface of the maxillary tooth to be indented. The boss-shaped structure can provide stable force distribution. Furthermore, the design matching the contour of the occlusal surface increases the contact area, disperses pressure, and helps maintain tooth stability during indentation, preventing unnecessary tooth movement and improving the quality of tooth indentation.

[0012] Optionally, when the maxillary indentation is located in the anterior region, it is a ramp sloping from the labial to the lingual side; when the maxillary indentation is located in the posterior region, it is cylindrical. The ramp design in the anterior region closely matches the lingual morphology of the anterior teeth, better guiding the teeth to move as a whole along their long axis and preventing lingual tilting. Because the occlusal surfaces of the posterior teeth bear a large load, the cylindrical design in the posterior region provides stable support.

[0013] Optionally, the ramp gradually decreases in height from the labial side to the lingual side in the vertical direction. This not only applies a vertical indentation force but also generates a slight torque towards the labial side to effectively counteract the common tendency of teeth to tilt lingually during indentation, thereby preventing the teeth from wobbling or tilting during the indentation process.

[0014] Optionally, when the lower surface of the occlusal plate is provided with a mandibular depressor protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed, the mandibular depressor is in the shape of a boss, and the lower surface contour of the mandibular depressor is planar or matches the concave-convex contour of the occlusal surface of the mandibular tooth to be depressed.

[0015] Optionally, when the mandibular depressor is located in the anterior tooth region, the mandibular depressor is a slope that slopes from the labial side to the lingual side; when the mandibular depressor is located in the posterior tooth region, the mandibular depressor is cylindrical.

[0016] Optionally, the vertical height of the ramp gradually decreases from the lip side to the tongue side. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a 45° schematic diagram of a dental instrument according to one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the outer surface of a dental instrument in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the labial-lingual cross-section of a dental instrument according to one embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the dental instrument of the orthodontic system in the mesiodistal direction according to one embodiment of the present invention.

[0022] Figure 5 This is a schematic cross-sectional view of the dental instrument of the orthodontic system in one embodiment of the present invention, in the labial and lingual direction.

[0023] Figure 6 This is a cross-sectional view of the dental instruments of the orthodontic system in the mesiodistal direction in some other embodiments of the present invention;

[0024] Figure 7 This is a cross-sectional view of the dental instruments of the orthodontic system in the mesiodistal direction in some other embodiments of the present invention;

[0025] Figure 8 This is a schematic diagram of the first preset distance in one embodiment of the present invention;

[0026] Figure 9 This is a top view of the dental instruments in some other embodiments of the present invention;

[0027] Figure 10 This is a schematic diagram of the labial and lingual cross-section of a dental instrument in some other embodiments of the present invention;

[0028] Figure 11 This is a schematic diagram of the labial and lingual cross-section of a dental instrument in some other embodiments of the present invention;

[0029] Figure 12 This is a cross-sectional schematic diagram of the dental instrument of the orthodontic system in Embodiment 2 of this utility model in the mesiodistal direction. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the various embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this utility model to facilitate a better understanding of the invention. However, the technical solutions claimed by this utility model can be implemented even without these technical details and with various variations and modifications based on the following embodiments. The division of the various embodiments below is for ease of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0031] In this embodiment of the invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to require it to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationships; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0033] The inventors of this invention discovered that in the prior art, children's teeth are misaligned and their dental arches are irregular during the mixed dentition period. Using the prior art makes the contact with the teeth to be indented unstable, thus failing to effectively transmit indentation force. Therefore, an orthodontic system is proposed. The dental instruments of this orthodontic system include a maxillary indentation part on the upper surface of the occlusal plate corresponding to the position of the maxillary teeth to be indented, and / or a mandibular indentation part on the lower surface of the occlusal plate corresponding to the position of the mandibular teeth to be indented, thereby ensuring effective transmission of indentation force.

[0034] The following is a detailed description of the implementation details of the correction system of this utility model. The following content is only for the convenience of understanding and is not necessary for implementing this solution.

[0035] Implementation Method 1

[0036] For details, please refer to the following: Figures 1-3 As shown, this embodiment provides an orthodontic system comprising a plurality of dental instruments used sequentially in accordance with an orthodontic plan. Each dental instrument comprises an occlusal plate 11 that, when worn, at least partially contacts the upper and lower teeth. The lingual edge of the occlusal plate 11 extends upward and downward toward the mandibular gingiva to form an inner wall 13 located on the lingual side of the dental arch. The labial and buccal edges of the occlusal plate 11 extend upward and downward toward the mandibular gingiva to form an outer wall 14. The outer wall 14, the occlusal plate 11, and the inner wall 13 form an upper groove 10 defining the upper dental arch and a lower groove 15 defining the lower dental arch.

[0037] In this embodiment, the orthodontic system according to the treatment plan consists of two dental instruments. The dental instrument used first in the treatment plan is designated as the first dental instrument 1, and the dental instrument used later is designated as the second dental instrument 2. The upper surface of the occlusal plate 11 of the first dental instrument has a maxillary intrusion portion 12 protruding towards the maxillary tooth to be intruded. In this embodiment, the maxillary tooth to be intruded is the maxillary anterior tooth region. The maxillary intrusion portion is a slope sloping from the labial side to the lingual side, as detailed in the following description. Figure 4 and Figure 5 As shown. The protrusion height of the maxillary indentation portion 12 of the first dental instrument 1 is a first height D1. The difference between the protrusion height of the maxillary indentation portion 12 and a first preset distance is within a predetermined range. The first preset distance is the sum of the designed indentation distance of the maxillary tooth to be indented in the corresponding orthodontic stage of the treatment plan and the vertical upward distance between the occlusal surface of the maxillary tooth to be indented and the upper surface of the occlusal plate. The protrusion height of the maxillary indentation portion 22 of the second dental instrument 2 is a second height D2, which is greater than the first height D1. For specific applications, please refer to... Figure 6As shown, when the tooth to be depressed is a mandibular anterior tooth, a mandibular depressing part 16 is provided on the lower surface of the occlusal plate 11 at the position corresponding to the mandibular tooth to be depressed, protruding toward the mandibular tooth to be depressed.

[0038] In some embodiments, such as Figure 7 As shown, the orthodontic system comprises three dental instruments. The first height D1 of the maxillary indentation portion 12 of the first dental instrument 1 is smaller than the second height D2 of the maxillary indentation portion 22 of the second dental instrument 2, and the second height D2 of the maxillary indentation portion 22 of the second dental instrument 2 is smaller than the third height D3 of the maxillary indentation portion 32 of the third dental instrument. In practical applications, a maxillary indentation portion protruding towards the maxillary tooth to be indented is provided on the upper surface of the occlusal plate at the position corresponding to the maxillary tooth to be indented. In the orthodontic plan, for any two adjacent dental instruments, the height of the maxillary indentation portion of the later-used dental instrument is greater than the height of the maxillary indentation portion of the earlier-used dental instrument.

[0039] In some embodiments, when the upper surface of the occlusal plate is provided with a maxillary intrusion portion protruding towards the maxillary tooth to be intruded at the position corresponding to the maxillary tooth to be intruded, the difference between the protrusion height of the maxillary intrusion portion and a first preset distance is within a predetermined range. The first preset distance is the sum of the designed intrusion distance of the dental instrument for the maxillary tooth to be intruded in the corresponding orthodontic stage of the treatment plan and the vertical distance between the occlusal surface of the maxillary tooth to be intruded and the upper surface of the occlusal plate. Figure 8 As shown, in this embodiment, the first preset distance is the sum of the intrusion amount L1 designed by the first dental instrument in the first stage of the orthodontic plan and the vertical upward distance H1 between the occlusal surface of the maxillary anterior tooth to be intruded and the upper surface of the occlusal plate. In actual application, the specific intrusion amount and the maxillary tooth to be intruded are determined according to the patient's specific situation and the orthodontic plan.

[0040] In some embodiments, such as Figure 9 and Figure 10 As shown, when the maxillary tooth to be depressed is a posterior tooth, the maxillary depressing part 12 is columnar, which better fits the surface of the posterior tooth and can ensure that the maxillary depressing part applies a stable depressing force to the tooth to be depressed.

[0041] In some embodiments, such as Figure 11As shown, the space defining the maxillary arch is formed by the outer side wall 14, the inner side wall 13, and the upper surface of the occlusal plate 11. When the maxillary tooth to be intruded is an anterior tooth, the maxillary intrusion part 12 is a ramp that slopes from the labial side to the lingual side, and the vertical height of the ramp gradually decreases from the labial side to the lingual side. The maxillary intrusion part is designed as a ramp that slopes from the labial side to the lingual side, and the vertical height of the ramp gradually decreases from the labial side to the lingual side. This design not only applies intrusion force vertically but also generates a force towards the labial side to effectively counteract the common tendency of teeth to tilt lingually during intrusion. Thus, while intruding the tooth, it can guide the tooth to move as a whole along the long axis of the tooth, preventing lingual tilt.

[0042] In summary, the orthodontic system provided in this embodiment achieves progressive and controllable intrusion of the maxillary teeth by using multiple dental instruments used sequentially and setting a maxillary intrusion part on the occlusal plate of each instrument corresponding to the position of the maxillary tooth to be intruded. Furthermore, the protrusion height of the maxillary intrusion part gradually increases among different instruments. By breaking down the orthodontic process into multiple stages, with only an appropriate intrusion force applied in each stage, the system avoids root resorption, periodontal tissue damage, or patient discomfort that may be caused by excessive force in a single treatment, thereby improving the safety of the treatment and patient comfort. The protrusion height of the maxillary intrusion part is correlated with the intrusion distance designed in the treatment plan and the vertical distance between the occlusal surface of the tooth and the upper surface of the occlusal plate, ensuring that the applied force of each dental instrument matches the target of the treatment stage and achieving precise control of tooth movement. Addressing the anatomical differences between the maxillary anterior and posterior regions, the maxillary or mandibular indentation unit is designed with either a ramp or column shape, depending on the tooth to be indented. This allows the indentation unit to better conform to the tooth surface, optimize force transmission efficiency, and ensure even distribution of indentation force. Suitable for various clinical scenarios, the ramp design guides the tooth along its long axis while indenting it, preventing lingual tilt and ensuring the tooth reaches its final target position. The orthodontic system allows for customization of the indentation unit parameters for each instrument based on the patient's specific dental condition and treatment plan, enabling personalized treatment and improving the targeted nature and success rate of the treatment.

[0043] It is understood that, in addition to the upper teeth mentioned above, the teeth to be depressed can also be lower teeth, or a combination of upper and lower teeth, which will not be elaborated on here.

[0044] Implementation Method 2

[0045] The second embodiment of this application relates to an orthodontic system. The second embodiment is largely the same as the first embodiment, the main difference being the specific shape of the depressor, which in the second embodiment is a boss-shaped depressor.

[0046] In this embodiment, the tooth to be indented is a maxillary tooth. According to the orthodontic plan, the orthodontic system requires two dental instruments with maxillary indentation portions. Based on the order of use in the orthodontic plan, these two instruments are designated as the first dental instrument 4 and the second dental instrument 5, respectively. The first dental instrument 4 is used before the second dental instrument 5 in the orthodontic plan. When the upper surface of the occlusal plate 11 of the dental instrument is provided with a maxillary indentation portion 42 protruding towards the maxillary tooth to be indented, the maxillary indentation portion 42 is in the shape of a boss, as detailed in the following description. Figure 12 As shown, the upper surface contour of the maxillary indentation portion is planar. The protrusion height of the maxillary indentation portion 42 of the first dental instrument 4 is a first height D4, and the protrusion height of the maxillary indentation portion 52 of the second dental instrument 5 is a second height D5, where the second height D5 is greater than the first height D4. In practical applications, the number of dental instruments with maxillary indentations is determined by the specific orthodontic plan. Setting the maxillary indentation portion as a boss shape can provide a vertical indentation force without a horizontal component, allowing for more precise control in cases where only simple indentation is needed without adjusting guiding teeth.

[0047] In some embodiments, the upper surface contour of the maxillary depressor 42 matches the occlusal surface contour of the maxillary tooth to be depressed. In practical applications, when the tooth to be depressed is a mandibular tooth, a mandibular depressor protruding toward the mandibular tooth is provided on the lower surface of the occlusal plate at the position corresponding to the mandibular tooth to be depressed.

[0048] In summary, this embodiment provides an orthodontic system in which the maxillary indentation unit is designed in a boss-like shape. This boss-like indentation unit provides a vertical indentation force without a horizontal component to the occlusal surface of the tooth, thereby reducing the risk of undesirable tooth movement such as tilting or rotation during indentation and ensuring efficient and stable tooth movement along the predetermined direction. Setting the maxillary indentation unit to match the contour of the occlusal surface of the tooth to be indented allows for a personalized and close fit, improving patient comfort and, more importantly, ensuring that the orthodontic force is evenly distributed across the entire occlusal surface of the target tooth, achieving more precise tooth control. Furthermore, the first dental instrument used in the first stage of the orthodontic system uses a relatively low-height boss, and the height of the indentation unit is gradually increased to progressively increase the indentation force on the tooth, ensuring patient comfort while achieving the target indentation position.

[0049] It is understood that, in addition to the upper teeth mentioned above, the teeth to be depressed can also be the lower teeth, or both upper and lower teeth, which will not be elaborated on here.

[0050] It should be noted that the above embodiments can be freely combined as needed to form different new implementation schemes without causing contradictions. All implementation schemes formed by such combinations are within the protection scope of this application. In order to save space in the application text, they will not be described in detail here.

[0051] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the inventive principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this application.

[0052] Similarly, the above descriptions are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A corrective system, characterized in that, It includes multiple dental instruments used sequentially according to the orthodontic plan, wherein the dental instrument used first is the first dental instrument, and the dental instrument used later is the second dental instrument; The dental instrument includes an occlusal plate that, when worn, at least partially contacts the upper and lower teeth. The lingual edges of the occlusal plate extend upward and downward toward the mandibular gingiva, respectively, to form an inner wall on the lingual side of the dental arch. The labial and buccal edges of the occlusal plate extend upward and downward toward the mandibular gingiva, respectively, to form an outer wall. The outer wall, the occlusal plate, and the inner wall together form an upper groove defining the upper dental arch and a lower groove defining the lower dental arch. The upper surface of the occlusal plate is provided with a maxillary indentation portion protruding toward the maxillary tooth to be indented at the position corresponding to the maxillary tooth to be indented. The protrusion height of the maxillary indentation portion of the first dental instrument is a first height, and the protrusion height of the maxillary indentation portion of the second dental instrument is a second height, wherein the second height is greater than the first height; and / or, The lower surface of the occlusal plate is provided with a mandibular depressor portion protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed. The protrusion height of the mandibular depressor portion of the first dental instrument is a third height, and the protrusion height of the mandibular depressor portion of the second dental instrument is a fourth height, wherein the fourth height is greater than the third height.

2. The orthodontic system according to claim 1, characterized in that: When the upper surface of the occlusal plate is provided with a maxillary depressor portion protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed, in the orthodontic plan, the height of the maxillary depressor portion of any two adjacent dental instruments used later is greater than the height of the maxillary depressor portion of the dental instrument used earlier.

3. The orthodontic system according to claim 1, characterized in that: When the lower surface of the occlusal plate is provided with a mandibular indentation portion protruding toward the mandibular tooth to be indented at the position corresponding to the mandibular tooth to be indented, in the orthodontic plan, the height of the mandibular indentation portion of any two adjacent dental instruments used later is greater than the height of the mandibular indentation portion of the dental instrument used earlier.

4. The orthodontic system according to claim 1, characterized in that: When the upper surface of the occlusal plate is provided with a maxillary depressor protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed, the difference between the protrusion height of the maxillary depressor and the first preset distance is within a predetermined range, wherein the first preset distance is the sum of the designed depressor distance of the maxillary tooth to be depressed in the corresponding orthodontic stage in the orthodontic plan and the vertical upward distance between the occlusal surface of the maxillary tooth to be depressed and the upper surface of the occlusal plate.

5. The orthodontic system according to claim 1, characterized in that: When the lower surface of the occlusal plate is provided with a mandibular depressor protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed, the difference between the protrusion height of the mandibular depressor and the second preset distance is within a predetermined range, wherein the second preset distance is the sum of the designed depressor distance of the mandibular tooth to be depressed in the corresponding orthodontic stage in the orthodontic plan and the vertical upward distance between the occlusal surface of the mandibular tooth to be depressed and the lower surface of the occlusal plate.

6. The orthodontic system according to claim 1, characterized in that: When the upper surface of the occlusal plate is provided with a maxillary depressor protruding toward the maxillary tooth to be depressed at the position corresponding to the maxillary tooth to be depressed, the maxillary depressor is in the shape of a boss, and the upper surface contour of the maxillary depressor is either planar or matches the contour of the occlusal surface of the maxillary tooth to be depressed.

7. The orthodontic system according to claim 1, characterized in that: When the maxillary depressor is located in the anterior tooth region, the maxillary depressor is a slope that slopes from the labial side to the lingual side; when the maxillary depressor is located in the posterior tooth region, the maxillary depressor is columnar.

8. The orthodontic system according to claim 7, characterized in that: The vertical height of the slope gradually decreases from the lip side to the tongue side.

9. The orthodontic system according to claim 1, characterized in that: When the lower surface of the occlusal plate is provided with a mandibular depressor protruding toward the mandibular tooth to be depressed at the position corresponding to the mandibular tooth to be depressed, the mandibular depressor is in the shape of a boss, and the lower surface contour of the mandibular depressor is either planar or matches the contour of the occlusal surface of the mandibular tooth to be depressed.

10. The orthodontic system according to claim 1, characterized in that: When the mandibular depressor is located in the anterior tooth region, the mandibular depressor is a slope that slopes from the labial side to the lingual side; when the mandibular depressor is located in the posterior tooth region, the mandibular depressor is cylindrical.

11. The orthodontic system according to claim 10, characterized in that: The vertical height of the slope gradually decreases from the lip side to the tongue side.

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