Child occlusal pad, child occlusal correction system based on adaptive occlusal and design method of child occlusal correction system

Abstract

The invention discloses a child occlusal pad, a child occlusal correction system based on adaptive occlusal and a design method thereof.The child occlusal pad comprises two bodies, the two bodies are configured to cover the left rear tooth area and the right rear tooth area of the upper jaw / lower jaw of a wearer, and the two bodies are connected through a connecting part; the body comprises an occlusal surface facing a jaw dentition and a tissue surface facing a dentition covered by the occlusal surface; the tissue surface is provided with an eruption nest for accommodating target teeth; the eruption nest is defined by a side wall and a nest bottom wall matched with an occlusal surface of a target tooth, and the side wall extends around a guide axis; wherein the body is configured to be in a wearing state, the guide axis has a preset deflection angle relative to a vertical line of a palate plane of a wearer so as to guide eruption of target teeth through the direction of the guide axis; the pit bottom wall of the germination pit has a preset thickness measured in the direction of the guide axis. The children occlusal correction system provided by the invention not only can improve retention force, but also can actively guide teeth to directionally germinate according to the occlusal type and remodel a functional occlusal plane, so that jaw malformation is corrected by eliminating an inward rotation / outward rotation mechanism of the lower jaw.

Description

Technical Field

[0001] This invention belongs to the field of orthodontic technology, specifically relating to children's occlusal pads, children's occlusal correction systems based on adaptive occlusion, and their design methods. Background Technology

[0002] During the mixed dentition period in childhood, the dentition is in a dynamic development process, which is often accompanied by malocclusion. Common malocclusions include Angle Class II (such as mandibular retrusion, deep overbite, and deep overjet) and Angle Class III (such as mandibular protrusion and reverse overbite).

[0003] For the treatment of this type of malocclusion, the main existing clinical methods include functional appliances (such as Twin-block, Frankel, etc.) or occlusal pad removable appliances. The basic principle is usually to use occlusal pads to open the bite, release the anterior teeth lock, and stimulate or inhibit jawbone growth by changing the position of the mandible (leading or retracting).

[0004] However, existing pediatric bite pads and orthodontic techniques still have significant limitations in clinical application: 1. Poor retention. During the mixed dentition period, the crowns of primary teeth wear down and shorten, primary teeth become loose and fall out, or permanent teeth do not erupt sufficiently, resulting in a small amount of usable retention area in the dentition. Traditional removable appliances that use clasps or simply rely on undercuts for retention are prone to falling out under force (especially orthodontic forces involving the mandibular premolar), seriously affecting the orthodontic effect.

[0005] 2. Lack of targeted treatment for the mandibular internal rotation mechanism. Medically, mandibular retrusion (mandibular external rotation) is often accompanied by mandibular internal rotation, meaning that excessive eruption of the lower anterior teeth leads to an excessively deep Spee curve (longitudinal curve) and mesial tilting of the posterior teeth. Most existing mandibular pads only passively elevate the occlusion and separate the anterior teeth, or force mandibular protrusion through a single inclined plane (such as the technology disclosed in Chinese invention patent application CN111497248A), which often involves passively waiting for the posterior teeth to erupt after the pad is subsequently ground down. This method cannot actively eliminate mandibular internal rotation. If the mandible is simply protruded without eliminating mandibular internal rotation (i.e., without correcting the mesial tilt of the posterior teeth and flattening the Spee curve), the premolars are prone to insufficient eruption or inability to achieve stable occlusal contact, leading to mandibular retrusion instability.

[0006] 3. Lack of refined guidance for different types of malocclusion. Existing techniques often fail to differentiate and precisely quantify the eruption direction (mesial or distal tilt) of posterior teeth and the overall steepness of the occlusal plane based on the pathological mechanisms of Class II or Class III malocclusions, resulting in low treatment efficiency and difficulty in fundamentally improving the direction of facial muscle strength and the growth trend of the jawbone. Summary of the Invention

[0007] The purpose of this invention is to provide a children's occlusal pad, a children's occlusal correction system based on adaptive occlusion, and a design method thereof. The children's occlusal correction system can not only improve retention force, but also actively guide the teeth to erupt in the correct direction and reshape the functional occlusal plane according to the type of malocclusion, thereby correcting jaw deformities by eliminating the mandibular internal / external rotation mechanism.

[0008] To achieve the above objectives, the first aspect of the present invention provides a child occlusal pad, comprising two bodies configured to cover the left and right posterior teeth regions of the wearer's maxilla / mandible, and the two bodies being connected by a connecting portion. The body includes an occlusal surface facing the opposing dentition and a tissue surface facing the dentition it covers; The tissue surface is formed with an eruption socket for accommodating the target tooth; The eruption socket is defined by sidewalls and a socket floor wall adapted to the occlusal surface of the target tooth, the sidewalls extending about a guide axis; The body is configured such that, when worn, the guide axis has a preset deflection angle relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target tooth through the direction of the guide axis; The bottom wall of the eruption socket has a preset thickness measured along the guide axis, and the preset thickness is configured to define the eruption height of the target tooth.

[0009] In one embodiment of the invention, the occlusal surface is configured to have a concave-convex structure, which is configured to morphologically match the occlusal functional surface of the opposing jaw in the occlusal state to form a stable occlusal contact.

[0010] A second aspect of the present invention provides a pediatric occlusion correction system based on adaptive occlusion, comprising: A maxillary occlusal pad, comprising a maxillary body having a maxillary occlusal surface facing the opposing jaw; A mandibular occlusal pad, comprising a mandibular body having a mandibular occlusal surface facing the opposing jaw; The maxillary occlusal pad and the mandibular occlusal pad are both the aforementioned pediatric occlusal pads; When the maxillary body and the mandibular body are in an occlusal state, the maxillary occlusal surface and the mandibular occlusal surface come into contact to form a functional occlusal contact surface; A virtual functional occlusal plane is defined based on the overall extension trend of the functional occlusal contact surface; The functional occlusal plane is configured to be parallel to or form a preset intersection angle with the palatal plane. The preset intersection angle causes the functional occlusal plane to be inclined relative to the palatal plane in a state that is farther from the palatal plane in the mesial direction and closer to the palatal plane in the distal direction.

[0011] In one embodiment of the invention, the functional occlusal plane is configured to be parallel to the palatal plane.

[0012] In one embodiment of the present invention, the maxillary occlusal pad includes a maxillary occlusal surface facing the mandibular dentition and a maxillary tissue surface facing the maxillary dentition it covers; the maxillary tissue surface forms an eruption fossa I for accommodating a target maxillary tooth; the eruption fossa I is defined by a sidewall I and a fossa floor wall I adapted to the target maxillary tooth, the sidewall I extending around a guide axis I; wherein, the maxillary occlusal pad is configured such that, in the wearing state, the guide axis I has a predetermined deflection angle α relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target maxillary tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa I has a predetermined thickness L1 measured along the direction of the guide axis I, the predetermined thickness L1 being configured to define the eruption height of the target maxillary tooth. The preset deflection angle α is the deflection of the guide axis I relative to the perpendicular line of the palatal plane in the distal direction, the preset deflection angle α is 7-12°, and the preset thickness L1 is 0.5-0.8mm; The mandibular occlusal pad includes a mandibular occlusal surface facing the maxillary dentition and a mandibular tissue surface facing the mandibular dentition it covers; the mandibular tissue surface forms an eruption fossa II for accommodating a target mandibular tooth; the eruption fossa II is defined by a sidewall II and a fossa floor wall II adapted to the target mandibular tooth, the sidewall II extending around a guide axis II; wherein, the mandibular occlusal pad is configured such that, in the wearing state, the guide axis II has a preset deflection angle β relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target mandibular tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa II has a preset thickness L2 measured along the direction of the guide axis II, the preset thickness L2 being configured to define the eruption height of the target mandibular tooth. The preset deflection angle β is 0°, and the preset thickness L2 is 0.5-0.8 mm.

[0013] In one embodiment of the present invention, the functional occlusal plane is configured to form a preset intersection angle with the palatal plane, the preset intersection angle causing the functional occlusal plane to be inclined relative to the palatal plane in a state that is farther from the palatal plane in the mesial direction and closer to the palatal plane in the distal direction.

[0014] In one embodiment of the present invention, the maxillary occlusal pad includes a maxillary occlusal surface facing the mandibular dentition and a maxillary tissue surface facing the maxillary dentition it covers; the maxillary tissue surface forms an eruption fossa I for accommodating a target maxillary tooth; the eruption fossa I is defined by a sidewall I and a fossa floor wall I adapted to the target maxillary tooth, the sidewall I extending around a guide axis I; wherein, the maxillary occlusal pad is configured such that, in the wearing state, the guide axis I has a predetermined deflection angle α relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target maxillary tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa I has a predetermined thickness L1 measured along the direction of the guide axis I, the predetermined thickness L1 being configured to define the eruption height of the target maxillary tooth. The preset deflection angle α is the deflection of the guide axis relative to the perpendicular line of the palatal plane in the distal direction, the preset deflection angle α is 7 to 12°, and the preset thickness L1 is 0.5 to 0.7 mm; The mandibular occlusal pad includes a mandibular occlusal surface facing the maxillary dentition and a mandibular tissue surface facing the mandibular dentition it covers; the mandibular tissue surface forms an eruption fossa II for accommodating a target mandibular tooth; the eruption fossa II is defined by a sidewall II and a fossa floor wall II adapted to the target mandibular tooth, the sidewall II extending around a guide axis II; wherein, the mandibular occlusal pad is configured such that, in the wearing state, the guide axis II has a preset deflection angle β relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target mandibular tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa II has a preset thickness L2 measured along the direction of the guide axis II, the preset thickness L2 being configured to define the eruption height of the target mandibular tooth. The preset deflection angle β is the deflection of the guide axis II relative to the perpendicular line of the palatal plane in the mesial direction. The preset deflection angle β is 5 to 8°, and the preset thickness L2 is 0.8 to 1.2 mm.

[0015] In one embodiment of the present invention, the maxillary occlusal surface and the mandibular occlusal surface are concave-convex matched in the occlusal state.

[0016] A third aspect of the present invention provides a design method for the above-mentioned child biting pad, comprising the following steps: Acquire 3D scan data of the wearer's oral cavity and skull imaging data; An initial digital model of the jaw and teeth is generated based on the oral cavity three-dimensional scan data, and the palatal plane is located based on the skull image data; On the initial digital model of the jaw, identify the target tooth that needs to be guided to erupt; Based on the initial digital model of the jaw, a digital basic model of the occlusal pad is constructed. The digital basic model includes two body models covering the left and right posterior tooth regions of the maxilla and / or mandible, and a connecting part model connecting the two body models. Obtain the morphological and positional data of the target tooth in the initial digital model of the jawbone, and construct virtual eruption parameters; Based on the virtual budding parameters, a three-dimensional geometric structure of the virtual budding is generated on the tissue surface of the body model to obtain a three-dimensional digital model of the child's biting pad. The parameters for constructing the virtual budding process include: Define a reference axis: the reference axis passes through the center of the target tooth and is perpendicular to the palatal plane; Define the guide axis: If the body model is constructed for the maxilla, the guide axis is set to deflect distally relative to the reference axis; if the body model is constructed for the mandible, the malocclusion type of the initial digital dental model is determined: if it is Angle Class II malocclusion, the guide axis is set to coincide with the reference axis; if it is Angle Class III malocclusion, the guide axis is set to deflect mesially relative to the reference axis; the angle between the guide axis and the reference axis is the preset deflection angle. Set preset thickness: Define the solid thickness parameter of the bottom wall of the budding nest measured along the guide axis; The budding feature is generated using the guide axis and the preset thickness.

[0017] The fourth aspect of this invention provides a method for preparing the above-mentioned child biting pad, comprising the following steps: Obtain a three-dimensional digital model of the child's biting pad generated using the above design method; Import the three-dimensional digital model into the additive manufacturing equipment; The child biting pad is obtained by integrally printing and molding using biocompatible polymer materials and additive manufacturing equipment.

[0018] The fifth aspect of this invention provides a digital design method for the above-mentioned adaptive occlusion-based pediatric orthodontic system, comprising the following steps: Acquire head imaging data of the wearer and locate the palatal plane; Based on the preset target orthodontic information, an initial model of the maxillary occlusal pad and an initial model of the mandibular occlusal pad are generated based on the oral cavity three-dimensional scanning data. The initial model of the maxillary occlusal pad and the initial model of the mandibular occlusal pad each include two bodies and a connecting part connecting the two bodies. Constructing a functional occlusal plane based on the palatal plane includes the following steps: Receive data of incorrect or deformed types; Determine the slope of the functional occlusal plane: If the type data indicates Angle Class II malocclusion, the functional occlusal plane is set to be parallel to the palatal plane; If the type data indicates Angle Class III malocclusion, the functional occlusal plane is set to form a preset intersection angle with the palatal plane, so that the functional occlusal plane is inclined relative to the palatal plane in the mesial direction and in the distal direction. Based on the established functional occlusal plane, the occlusal surfaces of the initial models of the maxillary occlusal pad and the mandibular occlusal pad are geometrically modified so that the overall extension trend of the contact surface formed by the modified maxillary occlusal surface and the mandibular occlusal surface coincides with the functional occlusal plane. Based on the malocclusion type data, the above-mentioned design method for children's occlusal pads is used to generate eruption fossae on the body tissue surfaces of the initial models of the maxillary and mandibular occlusal pads, respectively, thereby obtaining a three-dimensional digital model of the children's occlusal correction system based on adaptive occlusion.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The occlusal pad provided by this invention features an eruption socket with a specific guiding axis and a preset thickness on its tissue surface. Unlike existing technologies that passively wait for teeth to erupt or simply grind down occlusal pads, the eruption socket of this invention can actively control the eruption direction (e.g., tilting distally or mesially) and eruption amount of target teeth (especially premolars and molars). By precisely guiding the growth of posterior teeth along a specific axis, it can effectively flatten or adjust the Spee curve, thereby eliminating mandibular internal rotation at the dental level and providing a stable occlusal basis for mandibular repositioning at the skeletal level (e.g., correcting mandibular retrusion).

[0020] In cases of short crowns or missing teeth in children during the mixed dentition period, the occlusal pad provided by this invention tightly wraps around the crown of the target tooth through the connecting part and the sidewall of the eruption fossa, solving the problem of easy dislodgement of traditional removable orthodontic appliances. The eruption fossa forms a good mechanical interlock using the shape of the tooth itself, which greatly enhances the retention stability of the occlusal pad in the oral cavity. That is, through the synergistic effect of the connecting part and the eruption fossa, it is ensured that the orthodontic appliance will not fall off when orthodontic force is applied or intermaxillary traction is used, thus ensuring the continuous and effective expression of orthodontic force.

[0021] The occlusal pad provided by this invention has an occlusal surface with a concave-convex structure that matches the shape of the opposing functional surface. Compared with a smooth flat surface, it can better lock or guide the mandible to bite in a predetermined position, preventing the mandible from unconsciously retracting or sliding during sleep or relaxation.

[0022] The pediatric malocclusion correction system based on adaptive occlusion provided by this invention classifies and corrects occlusions based on the relative relationship between the functional occlusal plane and the palatal plane. Specifically, for Angle Class II malocclusion (mandibular retrusion): by constructing a "flat" functional occlusal plane that is nearly parallel to the palatal plane, and with distal tilt guidance from the maxillary eruption fossa, occlusal interference can be eliminated, condylar pressure can be relieved, and the mandible can be induced to grow naturally forward (counter-rotational tendency), while simultaneously correcting deep overbite. For Angle Class III malocclusion (mandibular protrusion): by constructing a "steep" functional occlusal plane that intersects the palatal plane at an angle, and forming a downward occlusal curve in the mandible, condylar pressure can be increased, creating a blocking mechanism that effectively inhibits excessive protrusion of the mandible (forward rotational tendency), while also assisting in correcting reverse overbite.

[0023] The pediatric occlusion correction system based on adaptive occlusion provided by this invention combines "tooth eruption guidance" (internal eruption fossa) with "jawbone growth control" (external functional occlusal plane), and uses occlusal pads to simultaneously change the force direction of the dentition and facial muscle strength, thereby achieving three-dimensional synergistic correction of teeth, muscles and bones.

[0024] The adaptive occlusion-based orthodontic system for children provided by this invention is compact, comfortable to wear, and facilitates early intervention. It integrates complex orthodontic biomechanical mechanisms (such as pushing molars backward, leveling the dental arch, and mandibular protraction) into a single occlusal pad body, eliminating the need for complex wire structures or bulky denture bases. In particular, it precisely limits eruption height by controlling the thickness of the socket wall, replacing the cumbersome clinical procedure of "staged pad grinding," reducing chairside treatment time, and improving the comfort and compliance of children.

[0025] The present invention provides a design method for children's occlusal pads. This design method, by defining a reference axis and a guide axis, can accurately translate the dentist's biomechanical design for tooth movement (such as tilting 7-12° distally) into the physical structure of the occlusal pad. This data-based precise design avoids the errors of experience-based estimation in traditional manual manufacturing. Furthermore, by setting a "preset thickness" for the eruption socket wall, the designer can accurately define the maximum height of tooth eruption allowed during the model stage, preventing excessive tooth eruption and causing new occlusal trauma, and ensuring the safety and controllability of the treatment process.

[0026] The method for preparing a child bite pad provided by this invention uses biocompatible materials for additive manufacturing (3D printing) in an integrated manner, avoiding the risks of structural delamination and breakage that may occur with traditional layered manufacturing or adhesive attachments; furthermore, 3D printing technology can perfectly present the complex internal eruption pit concave structure and precise side wall angles, which is difficult to achieve precisely in one go with traditional hot pressing film processes. Attached Figure Description

[0027] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a frontal view of the maxillary occlusal pad in Example 1; Figure 2 This is a frontal view of the mandibular occlusal pad in Example 1; Figure 3 This is a side view of the pediatric orthodontic system based on adaptive occlusion in Example 1. Figure 3 The black dashed line in the middle is the reference axis (perpendicular to the palatal plane), and the red and green lines both guide the axis. Figure 4 This is a side view of the pediatric orthodontic system based on adaptive occlusion in Example 2. Figure 4 The black dashed line in the middle is the reference axis (perpendicular to the palatal plane), and the red and green lines both guide the axis. Among them: maxillary occlusal pad 1, maxillary body 101, maxillary connection 102, mandibular occlusal pad 2, mandibular body 201, mandibular connection 202, eruption fossa I 3, guide eruption surface I 301, block eruption surface I 302, eruption fossa II 4, guide eruption surface II 401, block eruption surface II 402, reference axis 5, guide axis 6, palatal plane 7. Detailed Implementation

[0028] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes without departing from the concept of the present invention.

[0029] In embodiments of the present invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0031] Furthermore, the terms "installation," "setting," "equipped with," "opening," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.

[0032] Furthermore, the terms "first," "second," "I," "II," etc., are primarily used to distinguish different devices, components, or parts (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, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0033] The terms "anterior region" and "posterior region" mentioned in the various embodiments of this application are defined according to the classification of teeth in the 2nd edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38. These include premolars and molars, teeth marked as 4-8 in the FDI marking method, and teeth marked as 1-3 in the anterior region in the FDI marking method.

[0034] It should be noted that the terms mentioned in this invention are defined as follows: Palatal plane: The palatal plane is the reference plane for craniofacial measurement defined by the line connecting the anterior nasal spine (ANS) and the posterior nasal spine (PNS).

[0035] Perpendicular line to the palatal plane: refers to a straight line on the sagittal plane that is perpendicular to the palatal plane at a 90-degree angle.

[0036] The reference axis specifically refers to an auxiliary line that passes through the anatomical center (center of the crown or center of the root bifurcation) of the target tooth (such as the first premolar or the first permanent molar) and is perpendicular to the palatal plane. This line serves as the zero-degree line for measuring the deflection angle (α or β) of the guide axis.

[0037] It should be noted that the "occlusal surface" or "functional occlusal contact surface" mentioned in this application is not limited to an absolutely flat geometric plane in actual physical form. Considering the physiological structure of the human oral cavity, in order to better conform to the mandibular movement trajectory (such as the Curve of Spee or the Sphere of Monson), the maxillary occlusal surface and the mandibular occlusal surface may present a smooth curved surface with a certain curvature when in contact, or a concave-convex matching curved surface designed to achieve the cusp-fossa locking of the maxillary and mandibular teeth.

[0038] Functional occlusal plane: refers to a virtual plane formed when the maxillary occlusal pad and mandibular occlusal pad make contact during occlusal treatment. Since the actual occlusal contact surface has a concave-convex structure (physical contact surface), the "functional occlusal plane" defined in this invention refers to a virtual plane fitted based on the overall geometric extension trend of the contact area between the maxillary and mandibular occlusal surfaces.

[0039] The "far from the palatal plane in the mesial direction and close to the palatal plane in the distal direction" described in this invention is a geometric relationship defined based on a sagittal view (lateral view). Specifically, it refers to the functional occlusal plane being spatially open to the palatal plane, with the palatal plane as the upper reference line. That is, the vertical distance (H1) from the mesial reference point (such as the first premolar region) selected on the functional occlusal plane to the palatal plane is greater than the vertical distance (H2) from the distal reference point (such as the first permanent molar region) to the palatal plane (i.e., H1>H2). Clinically, this geometric shape usually corresponds to the functional occlusal plane tilting forward and downward relative to the palatal plane, forming a predetermined intersection angle (such as 8° to 15°).

[0040] Eruption fossa: refers to a groove structure formed on the surface of the tooth body, which is slightly larger than the crown of the target tooth, so as to provide guidance while allowing the tooth to grow towards the occlusal surface.

[0041] Guide axis: refers to the central axis extending from the side wall of the eruption socket. It is generally the longitudinal axis of the geometric center of the eruption socket and represents the target path through which the target tooth is guided to erupt.

[0042] Deflection direction: Reference Figure 3 or Figure 4 As shown, when describing the guide axis as "deflected distally," it means that the coronal end (the end furthest from the gingiva) of the axis points more distally to the oral cavity than the apical end; conversely, "deflected mesially" means that the coronal end of the axis points more mesially to the oral cavity than the apical end.

[0043] Hole wall thickness: refers to the thickness of the material between the occlusal surface and the top of the eruption socket. The thinner this thickness, the higher the vertical height of tooth eruption is allowed.

[0044] Preset thickness: Specifically refers to the thickness of the solid material of the socket floor wall along the guide axis. This thickness defines the distance from the occlusal end of the tooth to the bottom of the outer surface of the occlusal pad (occlusal surface); this thickness value directly determines the absolute eruption height limit of the tooth. For example, a thicker socket floor wall (e.g., 1.2 mm) means greater inhibition of eruption or a larger required occlusal opening, or it means less remaining space for tooth eruption (depending on the specific design logic; in this invention, it usually refers to the thickness of the solid material of the socket floor wall to maintain a specific occlusal height in accordance with the shape).

[0045] Concave-convex structure / morphological matching: refers to the non-planar interlocking design between the maxillary and mandibular occlusal surfaces; when the mandible is in a specific treatment position (such as the protruding position during Angle Class II orthodontic treatment), the convex part of the maxilla fits into the concave part of the mandible, forming a stable contact similar to gear meshing, preventing the mandible from sliding into a pathological position (such as retroversion) in a relaxed state.

[0046] In this instruction manual, unless otherwise stated, "occlusal position" does not refer to the patient's original malocclusion, but rather to the therapeutic jaw position set by the physician after wearing this orthodontic system. For Angle Class II patients, this position typically refers to the mandibular protrusion position; for Angle Class III patients, this position typically refers to the mandibular retraction or restricted protrusion position.

[0047] Example 1 Reference Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a pediatric occlusal correction system based on adaptive occlusion. The occlusal correction system in this embodiment is designed for Angle Class II malocclusion (characterized by mandibular retrusion, deep overbite, and deep overjet, often accompanied by mandibular internal rotation, i.e., excessive Spee curve).

[0048] The pediatric occlusion correction system of this embodiment includes an maxillary occlusion pad 1 and a mandibular occlusion pad 2, which are independent of each other but function synergistically.

[0049] In this embodiment, the maxillary occlusal pad 1 includes two maxillary bodies 101, respectively covering the deciduous molar and first permanent molar regions on the left and right sides of the maxilla. The two maxillary bodies 101 are connected by a maxillary connector 102 (such as a lingual bar or resin connector), which has a certain rigidity to maintain the width of the dental arch. The maxillary body 101 has a maxillary occlusal surface facing the opposing dentition and a maxillary tissue surface facing the maxillary teeth.

[0050] The mandibular occlusal pad 2 includes two mandibular bodies 201, respectively covering the deciduous molar and first permanent molar regions on the left and right sides of the mandible. The two mandibular bodies 201 are connected by a mandibular connector 202 (such as a lingual bar or resin connector), which has a certain rigidity to maintain the width of the dental arch. The mandibular body 201 has a mandibular occlusal surface facing the maxillary dentition and a mandibular tissue surface facing the mandibular teeth.

[0051] In this embodiment, both the maxillary body 101 and the mandibular body 201 include an occlusal surface facing the opposing dentition and a tissue surface facing the dentition they cover.

[0052] Within the tissue surfaces of the maxillary body 101 and the mandibular body 201, a concave "eruption socket" is formed for each target tooth that needs guidance (mainly the first premolar or the first deciduous molar and the first permanent molar).

[0053] Several eruption fossae I 3 are formed within the tissue surface of the maxillary body 101 to accommodate the target maxillary teeth (such as the first and second maxillary premolars). The lateral walls of the maxillary eruption fossae I 3 extend around a guiding axis 6I.

[0054] In this embodiment, the guide axis 6Ⅰ is deflected distally relative to the perpendicular line of the palatal plane 7, and the specific deflection angle α is set to 7° to 12° (e.g., 10°). The purpose of this angle design is to guide the maxillary posterior teeth to tilt distally to counteract the tendency of the maxillary dentition to move forward in Class II malocclusion.

[0055] In this embodiment, the bottom wall of the eruption socket I 3 has a relatively thin solid thickness measured along the guide axis 6I. The preset thickness L1 is set to 0.5mm to 0.8mm (for example, 0.6mm is selected in this embodiment). This thickness allows the maxillary posterior teeth to erupt vertically within a certain limit, in conjunction with distal guidance.

[0056] Several eruption fossae II 4 are formed within the tissue surface of the mandibular body 201 to accommodate the target mandibular teeth (such as the first and second premolars). The sidewalls of the mandibular eruption fossae II 4 extend around a guide axis 6II.

[0057] In this embodiment, the sidewall of the mandibular eruption fossa II 4 extends around a guide axis 6II.

[0058] In this embodiment, the guide axis 6Ⅱ coincides with the perpendicular line of the palatal plane 7 (the deflection angle β is 0°), that is, the eruption fossa Ⅱ4 is set perpendicular to the palatal plane 7.

[0059] In this embodiment, the preset thickness L2 of the bottom wall of the budding nest II 4 is set to 0.5mm to 0.8mm (for example, 0.6mm is selected in this embodiment).

[0060] When the maxillary occlusal pad 1 and the mandibular occlusal pad 2 are in the preset occlusal position, the maxillary occlusal surface and the mandibular occlusal surface fit together to form a virtual plane. In this embodiment, the functional occlusal plane is constructed to be parallel to the patient's palatal plane 7 (parallelism error controlled within ±2°).

[0061] In this embodiment, the preset occlusal position refers to the therapeutic jaw reconstruction position determined by the doctor based on the patient's malocclusion type. In this embodiment, this position is represented by the mandibular anterior leading position.

[0062] In this embodiment, the maxillary occlusal surface has a convex structure, and the mandibular occlusal surface has a concave structure. When the patient's mandible protrudes to the predetermined treatment position, the convex and concave structures fit tightly, preventing the mandible from retracting during sleep.

[0063] In this embodiment, the pediatric occlusion correction system based on adaptive occlusion achieves correction based on the following biomechanical principles: Eliminating Mandibular Internal Rotation (Smoothing the Spee Curve): Angle Class II malocclusion is often accompanied by mandibular internal rotation, manifested as excessive eruption of the lower anterior teeth and mesial tilting of the lower posterior teeth, resulting in an excessively deep Spee curve that locks the mandibular protrusion pathway. This system uses a 0° vertical mandibular guide axis 6Ⅱ to forcibly restrict further mesial tilting of the mandibular posterior teeth, forcing them to "stand upright" during eruption; combined with a relatively thin 0.5mm–0.8mm socket floor, it allows the posterior teeth to erupt vertically. This uprighting and eruption effect effectively smooths the Spee curve, eliminating the mandibular internal rotation mechanism at the dental level.

[0064] Inducing mandibular counterrotation (forward growth): By constructing a flat occlusal plane parallel to palatal plane 7, combined with mandibular protrusion position, the mechanical locking of deep overbite is removed. The flat plane relieves the posterior pressure of the condyle within the glenoid fossa, providing space and guidance for the mandible to grow forward and downward (counterrotation).

[0065] Actively counteracting the anterior displacement of the maxillary dentition: The maxillary eruption fossa is deflected distally by 7-12°, using occlusal force to generate a posterior component force to counteract the tendency of the maxillary dentition to move forward in Class II malocclusion, and to coordinate the relationship between the upper and lower dental arches.

[0066] By designing the deflection angle between the guiding axis and the perpendicular line to the palatal plane, a guiding eruption surface and a group eruption surface are formed within the eruption fossa. Specifically, in this embodiment, eruption fossa I3 includes a guiding eruption surface 301 that contacts the target tooth and an anti-eruption surface 302 with a gap between it and the target tooth; eruption fossa II4 includes a guiding eruption surface 401 that contacts the target tooth and an anti-eruption surface 402 with a gap between it and the target tooth. In this invention, the guiding eruption surface and the anti-eruption surface, along with the thickness of the occlusal pad, guide the unfolding and retraction of the mandibular dentition. In Class II mandibular retraction, the guiding eruption occlusal pad flattens the mandibular dentition, eliminates mandibular internal rotation, relieves condylar pressure, and promotes anterior mandibular growth. In Class III mandibular protrusion, the mandibular dentition is retracted, causing mandibular rotation, increasing condylar pressure, and inhibiting mandibular growth.

[0067] The design method of the pediatric orthodontic system based on adaptive occlusion for Angle Class II malocclusion described in this embodiment specifically includes the following steps: S1. Data Acquisition and Benchmark Construction Acquire the wearer's oral cavity 3D scan data (such as STL data) and head imaging data (such as lateral radiographs or CBCT). An initial digital model of the teeth and jaws is generated based on the oral cavity three-dimensional scan data. This model accurately reflects the current dentition morphology and occlusal relationship of the child. The palatal plane 7 is located based on the aforementioned cranial imaging data; On the initial digital model of the jaw, the target teeth that need to be guided to erupt are identified. For example, the maxillary first premolar and mandibular first premolar are identified and marked as target teeth in the software.

[0068] S2, Basic Model Construction and Type Determination Based on the initial digital model of the jaws, a digital basic model of the occlusal pad is constructed. This model includes four ontological models covering the left and right posterior teeth regions of the maxilla and mandible, as well as lingual connection models connecting the maxillary ontological body 101 and mandible ontological body 201.

[0069] The system receives or inputs data on the malocclusion type of the initial digital dental model (in this embodiment, it is Angle Class II malocclusion).

[0070] S3. Construction and adjustment of functional occlusal planes Based on the Angle Class II malocclusion type determined in S2, a slope strategy for the functional occlusal plane is set: the functional occlusal plane is set to be parallel to the palatal plane 7.

[0071] The basic models of the maxillary body 101 and mandibular body 201 are placed in the preset treatment jaw position (mandibular anterior position).

[0072] Based on the parallel functional occlusal plane, Boolean operations are used to geometrically modify the occlusal surfaces of the maxillary body 101 and the mandibular body 201, so that the overall extension trend of the contact surface formed by the modified maxillary occlusal surface and the mandibular occlusal surface coincides with the functional occlusal plane (i.e., forming a flat occlusal contact).

[0073] Further, a matching concave-convex structure is designed on the occlusal surface to achieve occlusal locking.

[0074] S4, Sprouting from the Nest Obtain the morphological and positional data of the target tooth in the initial model, and construct virtual eruption parameters; Define reference axis 5: For each target tooth, establish a reference axis 5 that passes through the center of the tooth and is perpendicular to the palatal plane 7.

[0075] Define guide axis 6 and generate solid features: For the maxillary body 101: the maxillary guiding axis 6Ⅰ is set to deflect distally relative to the reference axis 5, and the deflection angle α is set to 10°; at the same time, the preset thickness L1 of the pit floor wall is set to 0.6 mm.

[0076] For the mandibular body 201 (based on malocclusion type judgment): Since it has been judged to be Angle Class II malocclusion in S2, according to the design logic, the guide axis 6Ⅱ is set to coincide with the reference axis 5 (i.e., the deflection angle β is 0°); at the same time, the preset thickness L2 of the pit floor wall is set to 0.6mm.

[0077] Based on the aforementioned guide axis 6 direction and preset thickness, a virtual budding three-dimensional geometric structure is generated on the tissue surface of the body model.

[0078] S5, Model Output After completing the construction of all the above features, a three-dimensional digital model of a child's occlusal pad containing a specific eruption guide angle and a parallel occlusal plane is obtained, and the data is exported to additive manufacturing equipment for production.

[0079] Example 2 Reference Figure 4 As shown, this embodiment provides another pediatric occlusion correction system based on adaptive occlusion. The main difference between this embodiment and embodiment 1 is that this embodiment is aimed at Angle Class III malocclusion (characterized by mandibular protrusion, anterior crossbite, midfacial retraction, and often accompanied by mesial relationship of molars).

[0080] The pediatric occlusion correction system in this embodiment also includes an independent maxillary occlusion pad 1 and a mandibular occlusion pad 2 that function synergistically.

[0081] In this embodiment, the overall structure (body and connecting part) of the maxillary occlusal pad 1 is basically the same as that in embodiment 1.

[0082] Within the tissue plane of the maxillary body 101, the eruption fossa I3 formed for the target maxillary tooth (such as the first maxillary premolar) has its guiding axis 6I deflected distally relative to the perpendicular line of the palatal plane 7.

[0083] Specifically, in this embodiment, the preset deflection angle α is set to 7° to 12° (10° in this embodiment); the preset thickness L1 of the bottom wall of the eruption socket I3 is set to 0.5mm to 0.7mm (0.6mm in this embodiment). This design is similar to that of Embodiment 1, aiming to use the occlusal force to generate a posterior component force, limit the possible mesial movement tendency of the maxillary dentition (or coordinate the upper and lower dental arches), and allow the upper posterior teeth to erupt appropriately.

[0084] In this embodiment, the mandibular occlusal pad 2 includes two mandibular bodies 201 and a mandibular connecting part 202.

[0085] In this embodiment, the eruption fossa II 4 formed within the tissue surface of the mandibular body 201 for the target mandibular tooth (such as the first mandibular premolar) has a completely different deflection direction of its guiding axis 6II relative to the perpendicular line of the palatal plane 7 compared to that in Example 1.

[0086] In this embodiment, the guide axis 6Ⅱ is deflected in the mesial direction relative to the perpendicular line of the palatal plane 7, and the preset deflection angle β is set to 5° to 8° (6° in this embodiment).

[0087] In this embodiment, the base wall of eruption socket II 4 has a relatively thick solid thickness, with the preset thickness L2 set to 0.8mm to 1.2mm (1.0mm in this embodiment). In this embodiment, the relatively thick base wall (1.0mm) is intended to relatively suppress the vertical eruption of the mandibular posterior teeth (or to cooperate with occlusal opening), while the guide axis 6, which deflects mesially, cooperates with occlusal force to exert a certain control effect on the mandibular dentition and to cooperate with the overall functional construction.

[0088] When the maxillary occlusal pad 1 and the mandibular occlusal pad 2 are in the preset occlusal position (in this embodiment, it is usually the mandibular retraction position or even the edge-to-edge position after the reverse occlusal release), the functional occlusal plane formed by the fitting of the occlusal contact surfaces of the two is no longer parallel to the palatal plane 7.

[0089] In this embodiment, the functional occlusal plane is configured to form a preset intersection angle with the palatal plane 7. This preset angle ranges from 8° to 15° downwards, thereby achieving a clockwise rotation effect of the plane. Specifically, it is characterized by being farther from the palatal plane 7 in the mesial direction and closer to the palatal plane 7 in the distal direction (i.e., exhibiting a "steep" state relative to the palatal plane 7). (Refer to...) Figure 4 As shown, Figure 4 The right side is mesial; the functional occlusal plane rotates downwards from the mesial, increasing the mesial distance. Figure 4 The left side of the middle is the far middle, and the distance to the far middle decreases.

[0090] Similarly, the occlusal surfaces of the maxilla and mandible have concave and convex structures, but the locking position of these structures is configured to restrict mandibular protrusion and guide mandibular posterior positioning.

[0091] The correction system provided in this embodiment is based on the following principles for correcting Angle Class III malocclusion: Inhibiting mandibular protrusion (inducing clockwise rotation): By constructing a "steep" functional occlusal plane (mesially high, distally low) that intersects with the palatal plane 7, the steep plane increases the pressure of the condyle within the glenoid fossa during mandibular function, creating a mechanism similar to "posterior wall blocking." This mechanism tends to induce clockwise rotation (clockwise rotation) of the mandible, thereby inhibiting excessive horizontal protrusion and improving facial profile.

[0092] Controlling vertical height: The thick fossa wall of the mandibular eruption fossa (L2=1.0mm) restricts the over-eruption of the mandibular posterior teeth. Combined with the steep occlusal plane, it helps to correct anterior crossbite while preventing excessive length of the lower third of the face due to over-eruption of posterior teeth (if the patient has a high-angle case).

[0093] Relieving reverse crossbite: The occlusal pad itself has a certain thickness, which can open the bite, relieve the mechanical lock of the anterior teeth reverse crossbite, and eliminate the mechanical resistance to the forward development of the maxilla.

[0094] The design method of the pediatric orthodontic system based on adaptive occlusion for Angle Class III malocclusion described in this embodiment specifically includes the following steps: Step S1: Data Acquisition and Benchmark Construction Obtain the wearer's oral cavity 3D scan data and skull image data.

[0095] An initial digital model of the jaw was generated based on the data, and the palatal plane 7 (PP) was located based on the cranial imaging data.

[0096] Identify the target teeth that need to be guided to erupt on the initial digital model of the jaw.

[0097] Step S2: Basic Model Construction and Type Determination A digital basic model was constructed, including the upper and lower jaw bodies 201 and the connecting parts.

[0098] Determine the malocclusion type: The system receives or inputs malocclusion type data about the initial digital dental model. In this embodiment, the data is determined as "Angle Class III malocclusion".

[0099] Step S3, Strategy Setting: Based on the type data of "Angle Class III malocclusion", set the slope strategy of the functional occlusal plane: set the functional occlusal plane to form a preset intersection angle with the palatal plane 7, so that the plane presents a steep inclination state with "the mesial distance from the palatal plane 7 being relatively far and the distal distance from the palatal plane 7 being relatively close".

[0100] Jawline reconstruction: The upper and lower jaw models are placed in the treatment jawline position (e.g., the mandible is moved back to the edge-to-edge position of the anterior teeth or a slightly open position).

[0101] Geometric trimming: Based on the aforementioned "steep" functional occlusal plane, Boolean operations are used to cut the occlusal surfaces of the maxillary and mandibular bodies 201, so that the trimmed occlusal contact surface trend coincides with the steep plane. (For example, after completing the overall trimming of the occlusal plane, local Boolean addition / subtraction operations are performed based on the plane to generate minute interlocking concave-convex features, the height / depth variation of which is controlled within (e.g., 0.2 mm) and does not affect the overall slope guidance of the occlusal plane).

[0102] Step S4: Sprouting and Nest Formation (Anthropoid Class III) Define reference axis 5: Establish reference axis 5 that passes through the center of the target tooth and is perpendicular to the palatal plane 7.

[0103] Maxillary body 101 generation: set the guide axis 6Ⅰ to deflect in the distal direction (ɑ=10°), and set the preset thickness L1 of the pit floor wall to 0.6mm.

[0104] Mandibular body 201 generation: Since step S2 determines it to be an Angle Class III fault, according to the design logic; Set the mandibular guide axis 6Ⅱ to deflect towards the mesial direction relative to the reference axis 5, and set the included angle (deflection angle β) to 6°.

[0105] The preset thickness L2 of the mandibular eruption socket floor is set to 1.0 mm (relatively thick).

[0106] Based on the above parameters, a three-dimensional entity feature of the budding bird is generated.

[0107] Step S5: Model Output Export a 3D model of a child's occlusal pad that includes a steep occlusal plane and specific mesial guides for eruption, for additive manufacturing.

[0108] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A child's biting mat, characterized in that, It includes two bodies configured to cover the left and right posterior teeth regions of the wearer's maxilla / mandible, and the two bodies are connected by a connecting part. The body includes an occlusal surface facing the opposing dentition and a tissue surface facing the dentition it covers; The tissue surface is formed with an eruption socket for accommodating the target tooth; The eruption socket is defined by sidewalls and a socket floor wall adapted to the occlusal surface of the target tooth, the sidewalls extending about a guide axis; The body is configured such that, when worn, the guide axis has a preset deflection angle relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target tooth through the direction of the guide axis; The bottom wall of the eruption socket has a preset thickness measured along the guide axis, and the preset thickness is configured to define the eruption height of the target tooth.

2. The child biting pad according to claim 1, characterized in that, The occlusal surface is constructed with a concave-convex structure, which is configured to morphologically match the occlusal functional surface of the opposing jaw in the occlusal state to form a stable occlusal contact.

3. A pediatric orthodontic system based on adaptive occlusion, characterized in that, include: A maxillary occlusal pad, comprising a maxillary body having a maxillary occlusal surface facing the opposing jaw; A mandibular occlusal pad, comprising a mandibular body having a mandibular occlusal surface facing the opposing jaw; The maxillary occlusal pad and the mandibular occlusal pad are both children's occlusal pads as described in any one of claims 1 to 2; When the maxillary body and the mandibular body are in an occlusal state, the maxillary occlusal surface and the mandibular occlusal surface come into contact to form a functional occlusal contact surface; A virtual functional occlusal plane is defined based on the overall extension trend of the functional occlusal contact surface; The functional occlusal plane is configured to be parallel to or form a preset intersection angle with the palatal plane. The preset intersection angle causes the functional occlusal plane to be inclined relative to the palatal plane in a state that is farther from the palatal plane in the mesial direction and closer to the palatal plane in the distal direction.

4. The pediatric occlusion correction system based on adaptive occlusion according to claim 3, characterized in that, The functional occlusal plane is configured to be parallel to each other with the palatal plane.

5. The pediatric orthodontic system based on adaptive occlusion according to claim 4, characterized in that, The maxillary occlusal pad includes a maxillary occlusal surface facing the mandibular dentition and a maxillary tissue surface facing the maxillary dentition it covers; the maxillary tissue surface forms an eruption fossa I for accommodating a target maxillary tooth; the eruption fossa I is defined by a sidewall I and a fossa floor wall I adapted to the target maxillary tooth, the sidewall I extending around a guide axis I; wherein, the maxillary occlusal pad is configured such that, in the wearing state, the guide axis I has a preset deflection angle α relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target maxillary tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa I has a preset thickness L1 measured along the direction of the guide axis I, the preset thickness L1 being configured to define the eruption height of the target maxillary tooth; The preset deflection angle α is the deflection of the guide axis I relative to the perpendicular line of the palatal plane in the distal direction, the preset deflection angle α is 7-12°, and the preset thickness L1 is 0.5-0.8mm; The mandibular occlusal pad includes a mandibular occlusal surface facing the maxillary dentition and a mandibular tissue surface facing the mandibular dentition it covers; the mandibular tissue surface forms an eruption fossa II for accommodating a target mandibular tooth; the eruption fossa II is defined by sidewalls II and a fossa floor wall II adapted to the target mandibular tooth, the sidewalls II extending around a guide axis II; wherein, the mandibular occlusal pad is configured such that, in the wearing state, the guide axis II has a preset deflection angle β relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target mandibular tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa II has a preset thickness L2 measured along the direction of the guide axis II, the preset thickness L2 being configured to define the eruption height of the target mandibular tooth. The preset deflection angle β is 0°, and the preset thickness L2 is 0.5-0.8 mm.

6. The pediatric orthodontic system based on adaptive occlusion according to claim 3, characterized in that, The functional occlusal plane is configured to form a preset intersection angle with the palatal plane. The preset intersection angle causes the functional occlusal plane to be inclined relative to the palatal plane in a state that is farther from the palatal plane in the mesial direction and closer to the palatal plane in the distal direction.

7. The pediatric occlusion correction system based on adaptive occlusion according to claim 6, characterized in that, The maxillary occlusal pad includes a maxillary occlusal surface facing the mandibular dentition and a maxillary tissue surface facing the maxillary dentition it covers; the maxillary tissue surface forms an eruption fossa I for accommodating a target maxillary tooth; the eruption fossa I is defined by a sidewall I and a fossa floor wall I adapted to the target maxillary tooth, the sidewall I extending around a guide axis I; wherein, the maxillary occlusal pad is configured such that, in the wearing state, the guide axis I has a preset deflection angle α relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target maxillary tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa I has a preset thickness L1 measured along the direction of the guide axis I, the preset thickness L1 being configured to define the eruption height of the target maxillary tooth; The preset deflection angle α is the deflection of the guide axis relative to the perpendicular line of the palatal plane in the distal direction, the preset deflection angle α is 7 to 12°, and the preset thickness L1 is 0.5 to 0.7 mm; The mandibular occlusal pad includes a mandibular occlusal surface facing the maxillary dentition and a mandibular tissue surface facing the mandibular dentition it covers; the mandibular tissue surface forms an eruption fossa II for accommodating a target mandibular tooth; the eruption fossa II is defined by sidewalls II and a fossa floor wall II adapted to the target mandibular tooth, the sidewalls II extending around a guide axis II; wherein, the mandibular occlusal pad is configured such that, in the wearing state, the guide axis II has a preset deflection angle β relative to the vertical line of the wearer's palatal plane, so as to guide the eruption of the target mandibular tooth through the direction of the guide axis; the fossa floor wall of the eruption fossa II has a preset thickness L2 measured along the direction of the guide axis II, the preset thickness L2 being configured to define the eruption height of the target mandibular tooth. The preset deflection angle β is the deflection of the guide axis II relative to the perpendicular line of the palatal plane in the mesial direction. The preset deflection angle β is 5 to 8°, and the preset thickness L2 is 0.8 to 1.2 mm.

8. The pediatric orthodontic system based on adaptive occlusion according to claim 3, characterized in that, The maxillary occlusal surface and the mandibular occlusal surface are matched in concave and convex shape during occlusion.

9. A method for designing a child's biting pad as described in any one of claims 1 to 2, characterized in that, Includes the following steps: Acquire 3D scan data of the wearer's oral cavity and skull imaging data; An initial digital model of the jaw and teeth is generated based on the oral cavity three-dimensional scan data, and the palatal plane is located based on the skull image data; On the initial digital model of the jaw, identify the target tooth that needs to be guided to erupt; Based on the initial digital model of the jaw, a digital basic model of the occlusal pad is constructed. The digital basic model includes two body models covering the left and right posterior tooth regions of the maxilla and / or mandible, and a connecting part model connecting the two body models. Obtain the morphological and positional data of the target tooth in the initial digital model of the jawbone, and construct virtual eruption parameters; Based on the virtual budding parameters, a three-dimensional geometric structure of the virtual budding is generated on the tissue surface of the body model to obtain a three-dimensional digital model of the child's biting pad. The parameters for constructing the virtual budding process include: Define a reference axis: the reference axis passes through the center of the target tooth and is perpendicular to the palatal plane; Define the guide axis: If the body model is constructed for the maxilla, the guide axis is set to deflect distally relative to the reference axis; if the body model is constructed for the mandible, the malocclusion type of the initial digital dental model is determined: if it is Angle Class II malocclusion, the guide axis is set to coincide with the reference axis; if it is Angle Class III malocclusion, the guide axis is set to deflect mesially relative to the reference axis; the angle between the guide axis and the reference axis is the preset deflection angle. Set preset thickness: Define the solid thickness parameter of the bottom wall of the budding nest measured along the guide axis; The budding feature is generated using the guide axis and the preset thickness.

10. A method for preparing a children's biting pad as described in any one of claims 1 to 2, characterized in that, Includes the following steps: Obtain a three-dimensional digital model of the child's biting pad generated using the design method described in claim 9; Import the three-dimensional digital model into the additive manufacturing equipment; The child biting pad is obtained by integrally printing and molding using biocompatible polymer materials and additive manufacturing equipment.

11. The digital design method for a pediatric orthodontic system based on adaptive occlusion as described in any one of claims 3-8, characterized in that, Includes the following steps: Acquire head imaging data of the wearer and locate the palatal plane; Based on the preset target orthodontic information, an initial model of the maxillary occlusal pad and an initial model of the mandibular occlusal pad are generated based on the oral cavity three-dimensional scanning data. The initial model of the maxillary occlusal pad and the initial model of the mandibular occlusal pad each include two bodies and a connecting part connecting the two bodies. Constructing a functional occlusal plane based on the palatal plane includes the following steps: Receive data of incorrect or deformed types; Determine the slope of the functional occlusal plane: If the type data indicates Angle Class II malocclusion, the functional occlusal plane is set to be parallel to the palatal plane; If the type data indicates Angle Class III malocclusion, the functional occlusal plane is set to form a preset intersection angle with the palatal plane, so that the functional occlusal plane is inclined relative to the palatal plane in the mesial direction and in the distal direction. Based on the established functional occlusal plane, the occlusal surfaces of the initial models of the maxillary occlusal pad and the mandibular occlusal pad are geometrically modified so that the overall extension trend of the contact surface formed by the modified maxillary occlusal surface and the mandibular occlusal surface coincides with the functional occlusal plane. Based on the malocclusion type data, the eruption fossae are generated on the body tissue surfaces of the initial model of the maxillary occlusal pad and the initial model of the mandibular occlusal pad, respectively, using the method described in claim 9, thereby obtaining a three-dimensional digital model of the pediatric occlusal correction system based on adaptive occlusion.

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