Oral three-dimensional occlusion induction type high-angle bone face type appliance and preparation and use methods thereof

Abstract

The invention provides a preparation method of an oral three-dimensional occlusion induction type high-angle bone face type appliance, which comprises the following steps: acquiring upper and lower jaw dentition digital models of a child patient, constructing upper and lower jaw tooth digital models of the child patient after occlusion reconstruction of the upper and lower jaws, and then designing a back tooth occlusion relation and a maximum occlusion contact mode after occlusion reconstruction, a design scheme of the invisible tooth socket containing the gap part is obtained, and a design scheme of the flexible filler is constructed. The invisible tooth socket containing the gap part prepared according to the design scheme can be independently used and can also be matched with flexible filler for use. The orthodontic appliance can solve the technical problem that the existing orthodontic appliance is difficult to simultaneously and effectively control the perpendicularity and inclination of front and rear teeth, adjust occlusion induction and tooth uniformity and adjust the inclination of an occlusion plane during deciduous tooth shedding and permanent tooth eruption of a child patient.

Description

Three-dimensional occlusal induction type high-angle skeletal facial appliance and its preparation and usage Technical Field

[0001] This invention relates to the field of pediatric orthodontic technology, specifically to a three-dimensional occlusal induction type high-angle bone facial orthodontic appliance and its preparation and usage methods. Background Technology

[0002] In the classification of skeletal facial features of malocclusion, as shown in Figure 1, the high-angle skeletal facial feature is a typical manifestation of vertical developmental abnormalities. Its core characteristic is that the mandible is excessively rotated relative to the skull base, resulting in uncontrolled vertical facial development. Children with the high-angle skeletal facial feature have a long and narrow face, with a significantly increased proportion of the lower third of the face and indistinct mandibular angles on both sides, presenting a "long face" or "horse face" appearance. The occlusal relationship of the teeth may be normal, usually with dental compensation, or accompanied by malocclusion. The impact on the child includes changes in facial aesthetics or reduced chewing efficiency, impaired anterior cutting function, and an increased risk of temporomandibular joint disorder, which may be accompanied by joint clicking or pain, while also affecting facial aesthetics.

[0003] For children with high-angled facial features, current treatment options primarily involve intruding the posterior teeth or the entire dentition, reducing the height of the posterior teeth using anchorage screws or functional appliances, adjusting the vertical height of the anterior teeth, and improving vertical relationships. If the child also has mandibular retrusion, Herbst appliances may be considered to guide the mandible forward. For adult patients with severe high-angled facial features, orthognathic surgery may be necessary, such as maxillary anterior osteotomy with posterior displacement or mandibular ramus vertical osteotomy, to adjust the jawbone position. Therefore, the golden period for treating high-angled facial features is during childhood, before the child's jawbone development is fully complete during puberty.

[0004] However, when treating children with high-angled facial profiles during childhood, it is difficult to simultaneously and effectively control the verticality of the anterior and posterior teeth, guide occlusion, and adjust tooth alignment using existing orthodontic appliances, as well as adjust the inclination of the occlusal plane. At the same time, during the process of indenting the posterior teeth, the height of the posterior teeth may suddenly change due to the loss of deciduous teeth and the eruption of permanent teeth, which greatly affects the orthodontic effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a three-dimensional occlusal induction type high-angle bone surface orthodontic appliance and its preparation and usage methods. This addresses the technical problem that existing orthodontic appliances struggle to simultaneously and effectively control the verticality and inclination of anterior and posterior teeth, occlusal induction, and tooth alignment adjustment, as well as the adjustment of the occlusal plane inclination, during the period of deciduous tooth loss and permanent tooth eruption in children.

[0006] The technical solution adopted by this invention is as follows: Firstly, a method for preparing a three-dimensional occlusal induction type high-angle bone facial orthodontic appliance is provided, comprising the following steps: obtaining digital models of the child's upper and lower dentition; constructing digital models of the child's upper and lower dentition after occlusal reconstruction based on the digital models of the child's upper and lower dentition; designing the posterior tooth occlusal relationship and maximum occlusal contact mode after occlusal reconstruction based on the digital models of the child's upper and lower dentition after occlusal reconstruction, thereby obtaining a design scheme for an invisible brace including a gap; constructing a design scheme for a flexible filling material based on the design scheme for the invisible brace including a gap; and preparing the invisible brace including a gap and the flexible filling material according to the design scheme.

[0007] Furthermore, the digital models of the maxillary and mandibular teeth after the reconstruction of the maxillary and mandibular occlusion include vertical occlusion reconstruction and sagittal occlusion reconstruction; when the posterior teeth are reconstructed vertically, the vertical opening of the posterior teeth is performed in the resting occlusion position; when the anterior teeth are reconstructed vertically, the vertical height of the anterior teeth is controlled by the invisible braces of the anterior teeth, or by inserting flexible filling material into the gap of the invisible braces, or by the anterior tooth gap.

[0008] Furthermore, based on the digital models of the upper and lower jaws after the reconstruction of the child's maxillary occlusion, the occlusal relationship of the posterior teeth after occlusal reconstruction and the maximum occlusal contact mode are designed; a design scheme for invisible braces including the gaps is obtained, including: opening the digital models of the upper and lower jaws after the reconstruction of the child's maxillary occlusion in the restorative design software; determining the vertical control target of the posterior teeth according to the treatment plan, determining the height of the occlusal plane, and automatically generating cusps and pits and fissures; using inlays to restore the occlusal surface of the posterior teeth to obtain invisible braces including the gaps.

[0009] Furthermore, based on the design scheme of invisible braces that includes gaps, when constructing the flexible filling design scheme, the size and shape of the constructed flexible filling are matched with the internal space of the gaps.

[0010] Furthermore, it also includes designing retaining and moving attachments for posterior and anterior teeth, and using a molding machine to press invisible braces for posterior teeth.

[0011] Secondly, a three-dimensional occlusal induction type high-angle bone facial orthodontic appliance is provided, including invisible braces, which include upper and / or lower braces, and the upper and / or lower braces are provided with a cavity into which a flexible filler can be inserted.

[0012] Furthermore, the void portion may be one or more, and is located on the coronal side of the tooth surface.

[0013] Furthermore, the shape of the gap includes a long strip, an ellipse, or a square.

[0014] Furthermore, the height of the gap is 1-10 mm.

[0015] Furthermore, the flexible filler includes silicone, silicone rubber, and / or polyurethane-based soft lining materials.

[0016] Thirdly, a method of using the three-dimensional occlusal induction type high-angle skeletal orthodontic appliance as described in the second aspect is provided. When the flexible filler is used in conjunction with the invisible braces: when the flexible filler is inserted and a gap is maintained between the upper and lower braces during wear, it is used to raise the posterior teeth; when the flexible filler is inserted and no gap is maintained between the upper and lower braces during wear, it is used to depress the posterior teeth.

[0017] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: The oral three-dimensional occlusal induction type high-angle bone facial orthodontic appliance provided in this embodiment can control the dentition during the mixed dentition period in three dimensions (lateral, vertical, and sagittal directions). It utilizes the child's own chewing and biting force as the source of power to train the child's vertical muscle strength, and can control the occlusal plane more accurately and effectively, thereby controlling joint tension and pressure, indirectly affecting mandibular remodeling, promoting mandibular development and reverse selection; it simultaneously coordinates lateral width and occlusion, promotes normal development of the upper and lower jaws, promotes occlusal jump in the upper and lower jaws, and achieves effective correction of muscle, bone, and teeth in a unified manner, promoting normal development of the jawbone and obtaining a better facial profile in children during the mixed dentition period. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 is a schematic diagram of the skeletal facial type classification of malocclusion in the background art of the present invention; Figure 2 is a flowchart of the preparation method of the oral three-dimensional occlusal induction type high-angle skeletal facial type orthodontic appliance in the embodiment of the present invention; Figure 3 is a schematic diagram of the overall structure of the invisible braces with a flexible filling space that can be inserted in the embodiment of the present invention; Figure 4 is a schematic diagram of the side structure of the invisible braces with a flexible filling space that can be inserted in the embodiment of the present invention. Detailed Implementation

[0020] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0021] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0022] Example

[0023] The inventors of this application have made the following findings through research: For children with high-angle facial features during the mixed dentition period (usually referring to 6-12 years old, the stage of replacement of deciduous teeth with permanent teeth and rapid growth of the jawbone), the core difficulty in treating these cases stems from the superposition of the inherent contradictions of the high-angle facial features and the uncertainty of growth and development during the mixed dentition period. Therefore, it is necessary to find a technical solution that can simultaneously achieve the synergistic effects of "vertical control", "sagittal guidance" and "permanent tooth eruption management".

[0024] Regarding the synergistic treatment of "vertical control" and "permanent tooth eruption management," the inventors of this application, through further research, concluded that the essence of high-angle facial profile is an excessively large mandibular plane angle (abnormal vertical facial profile), often accompanied by excessive or insufficient eruption of posterior teeth, anterior open bite or open bite tendency, or a tendency of deep overbite of anterior teeth, mandibular underdevelopment (retrusion), or a high-angle facial profile caused by a mismatch between vertical bone volume and muscle volume. The mixed dentition period is precisely the critical period for tooth eruption and vertical growth of the jawbone. If not properly controlled, the high-angle feature will be further aggravated with growth, which is the primary difficulty in treatment. Children with high-angled facial profiles often exhibit a growth trend of "excessive vertical eruption of posterior teeth" (especially mandibular posterior teeth). This can lead to: further mandibular retrusion due to excessive support from posterior teeth (sagittal deterioration); often accompanied by insufficient eruption of maxillary posterior teeth; excessive vertical eruption of anterior teeth due to mandibular rotation; or excessive vertical and sagittal development of the alveolar bone of the maxillary anterior teeth leading to deep overbite (or not limited to this), ultimately resulting in vertical imbalance between anterior and posterior teeth, causing a steeper mandibular occlusal plane and deterioration of facial profile. However, during the mixed dentition period, the posterior dentition is not yet fully established (e.g., the second permanent molar has not yet erupted), lacking stable occlusal support. Traditional devices for controlling posterior tooth eruption (such as transpalatal bars, Nance arches, and posterior splints) are not only difficult to effectively fix before the posterior teeth have fully erupted, but may also affect the eruption path of permanent teeth. Using existing orthodontic appliances and treatment plans, balancing the "controlled eruption" and "guided eruption" of the child's permanent anterior and posterior teeth is extremely difficult. Meanwhile, children with high-angled facial features are prone to open bite (no occlusal contact between the upper and lower anterior teeth) in the anterior teeth area due to vertical imbalance, or compensatory deep overbite or deep overbite due to excessive sagittal and vertical eruption of the maxilla. If only the alignment of deciduous / permanent teeth is focused on during the mixed dentition period without intervention in the vertical direction, the open bite may gradually worsen as the posterior teeth erupt and the jawbone grows. However, at this time, the anterior teeth are mostly in a "mixed dentition" (such as unerupted lateral incisors and impacted canines), and it is impossible to "indentate" or "intermaxillary traction" through fixed orthodontic appliances during the permanent dentition period. The effectiveness of functional appliances (such as muscle activators) depends on the strict wearing of the child (children in the mixed dentition period have poor cooperation), and it is impossible to perform relatively precise occlusal guidance and occlusal plane control, which can easily lead to the aggravation of skeletal problems, forming a vicious cycle, and further aggravating the high-angled facial features.

[0025] On another front, the inventors of this application have discovered through research that the core characteristic of the mixed dentition period is active but uncontrollable jawbone growth. Children with high-angle facial features exhibit significant individual differences in the direction of jawbone growth and the accompanying changes and uncontrolled occlusal planes (whether vertical growth remains uncontrolled and whether sagittal growth has potential for improvement), posing a significant challenge to the formulation and adjustment of treatment plans. This is because not all children with high-angle facial features during the mixed dentition period will continue to grow vertically. Some children may experience a certain degree of forward and upward growth of the mandible after entering puberty, alleviating the high-angle characteristic; however, in other children, vertical growth may be further exacerbated due to genetics or bad habits (such as mouth breathing). Currently, there are no absolutely accurate methods for growth prediction (such as cephalometric prediction or growth curves). Excessive intervention (such as premature suppression of posterior tooth eruption) may limit normal jawbone growth; insufficient intervention may miss the window of opportunity for growth remodeling, doubling the difficulty of treatment during the permanent dentition period.

[0026] Regarding the synergistic treatment of "vertical control" and "sagittal guidance," children with high-angle facial features often have "mandibular retrusion" (i.e., sagittal problems). Treatment requires simultaneously guiding mandibular counterrotation (to improve retrusion) and controlling vertical growth (to improve high angle), but these two approaches are contradictory: if only mandibular protrusion is addressed (e.g., using functional appliances to push the mandible forward) without controlling posterior tooth eruption, the posterior teeth will continue to erupt, causing the mandible to be "pushed up," negating the protrusion effect and exacerbating the retrusion; if only vertical control is achieved (e.g., indenting posterior teeth) without guiding mandibular growth, the mandibular retrusion problem will persist, potentially requiring orthognathic surgery in adulthood. Therefore, orthodontic treatment during the mixed dentition period requires balancing these two approaches within the context of "dynamic growth," necessitating frequent adjustments to the treatment plan by the dentist (e.g., cephalometric measurements every 3-6 months), demanding a high level of clinical experience.

[0027] In addition, "permanent tooth eruption management" needs to be considered in conjunction with "vertical control" and "sagittal guidance" because during the mixed dentition period, the replacement of teeth is not yet complete (such as retained deciduous teeth, ectopic eruption of permanent teeth, and abnormal interdental spaces). The instability of the dental arch structure further increases the complexity of treatment: during the mixed dentition period, the dental arch has "many gaps and varying tooth eruption heights," making it difficult for traditional fixed orthodontic appliances (brackets, archwires) to bond stably and potentially hindering the eruption of permanent teeth (such as archwires pressing on unerupted canines); functional appliances have structural problems (such as FR-II or high-positioned cap muscle activators), and due to the frequent replacement of posterior teeth during the mixed dentition period, it is difficult to accurately control the clinical crown height, inclination, and alignment of anterior and posterior teeth, often resulting in poor treatment outcomes; while invisible aligners can effectively control alignment and anterior and posterior tooth inclination, due to the performance issues of the aligners and the inability to use anchorage screws to reinforce posterior tooth intrusion during the mixed dentition period, it is difficult to effectively control the vertical direction of posterior teeth. In addition, during the process of controlling the vertical direction of the anterior and posterior teeth, treatment needs to simultaneously guide the permanent teeth into their normal eruption positions and avoid aggravating vertical problems during eruption (such as over-eruption of posterior teeth). For example, if the problem is "over-eruption of permanent teeth in the anterior region + excessive eruption of posterior teeth + underdevelopment of the mandible", current orthodontic appliances are difficult to simultaneously achieve effective intrusion of the anterior and posterior teeth and control the tilt of the occlusal plane, which indirectly affects the remodeling of the temporomandibular joint and thus promotes effective development of the mandible.

[0028] In view of the above-mentioned research findings of the inventors of this application, this embodiment provides a three-dimensional occlusal induction type high-angle skeletal orthodontic appliance. The appliance comprises the following two parts: the first part is a personalized invisible brace with an anatomical occlusal plane, a non-anatomical occlusal plane, or a semi-anatomical occlusal plane; the second part is a flexible filler for controlling the occlusal height of the posterior teeth. The flexible filler can be made of silicone, silicone rubber, polyurethane-based soft lining materials, etc., preferably silicone components. The invisible brace can be used alone or in conjunction with the flexible filler. The following provides an example of a silicone component for the flexible filler.

[0029] Invisible braces include upper and / or lower braces, each with a cavity for inserting a silicone component. There may be one or more cavities located on the coronal side (coronal direction) of the tooth surface; they may be located at positions corresponding to posterior or anterior teeth, depending on the specific occlusal plane. In some embodiments, each cavity has at least one opening, with the rest closed; preferably, only one opening is provided, and this opening is located horizontally along the body of the invisible braces, allowing the silicone component to be easily inserted into or removed from the cavity through the opening.

[0030] When using it, depending on the actual situation of the child's need for correction, silicone can be inserted into the gap or not. This includes: 1. Inserting silicone components and maintaining a gap between the upper and lower braces when wearing them can be used to raise the posterior teeth; 2. Inserting silicone components and maintaining no gap between the upper and lower braces when wearing them can be used to depress the posterior teeth. Combining the occlusal pad effect of silicone and the retention effect of the upper and lower braces, it can also effectively control the angle and alignment of the anterior teeth.

[0031] 2. Braces that do not contain silicone components and maintain a gap between the upper and lower braces during wear can be used to elevate the posterior teeth. The size of the gap is determined based on the current tooth alignment and the eruption of permanent teeth. Since the shape of the braces needs to be adjusted periodically during treatment, the size of the gap will be affected by the usage time and replacement frequency of the braces. The preferred range for the size of the gap is 2-3 mm.

[0032] Without inserting silicone parts and without gaps between the upper and lower braces when worn, and without making vertical modifications, alignment can be controlled.

[0033] In some embodiments, the shape of the gap includes a long strip, an oval, a square, etc., and its shape and size are determined according to the tooth arrangement and permanent tooth eruption as needed for orthodontic treatment; the height of the gap is not limited and is determined according to the specific situation of the occlusal plane, preferably 1-10 mm.

[0034] The gap includes an inner surface (the side of the invisible braces that is worn on the teeth and in contact with the teeth when in use) and an outer surface (the side of the invisible braces that is not in contact with the teeth when in use). The inner and outer surfaces of the gap are made of the same material as the invisible braces. In some embodiments, the gap is integrally formed with the upper or lower braces.

[0035] For upper and lower braces with an anatomical occlusal plane, the plane formed during tooth occlusion conforms to the natural physiological curve, and the cusp-fossa structures of the upper and lower teeth form a clear interlocking relationship, with cusp inclination typically between 30° and 33°. For upper and lower braces with a non-anatomical occlusal plane, the occlusal surface of the teeth has no clear cusp structure or the cusp inclination is 0°; only pits and grooves and overflow grooves are preserved on the occlusal surface, and the upper and lower posterior teeth are in planar contact. For upper and lower braces with a semi-anatomical occlusal plane, some cusp anatomical morphology is preserved, while the cusp inclination is reduced, typically between 10° and 20°, the cusp height and slope length are shortened, and the pit and groove depth is shallower.

[0036] The aforementioned three-dimensional occlusal induction type high-angle skeletal facial appliance can be prepared as follows: Step S1, obtaining digital models of the child's upper and lower jaw dentition. In this embodiment, intraoral direct scanning is preferred to obtain digital models of the child's upper and lower jaw dentition. Using an intraoral three-dimensional scanning system, the scanning head performs high-speed scanning of the teeth in the mouth along various directions of the dentition. Through high-precision electronic imaging, the image of each tooth is quickly and automatically stitched together from multiple multi-angle 3D images to finally generate digital models of the child's upper and lower jaw dentition.

[0037] Step S2: Based on the digital model of the child's upper and lower jaw dentition, construct the digital model of the child's upper and lower jaws after occlusal reconstruction. This includes vertical occlusal reconstruction and sagittal occlusal reconstruction. Once the vertical and sagittal occlusal reconstruction positions are determined, they can be fixed with wax sheets or silicone to confirm the occlusal reconstruction relationship of the upper and lower jaws. For example: When performing vertical occlusal reconstruction on the posterior teeth, the posterior teeth need to be opened vertically in the resting occlusal position. This requires intrusion of the upper and lower posterior teeth, with an opening of no less than 5mm, or intrusion of a unilateral posterior tooth, with an opening of no less than 4mm.

[0038] When reconstructing vertical occlusion in the anterior teeth, the vertical height of the anterior teeth is controlled by the invisible braces in the anterior teeth section. Alternatively, silicone components can be inserted into the gaps of the invisible braces for control, or it can be controlled by the interdental spaces of the anterior teeth.

[0039] In some embodiments, depending on the child's actual condition, lateral arch expansion, 3D tooth alignment, and dental alignment can also be performed simultaneously. For example, 3D dental alignment software can be used to simulate changes in the occlusal height of the posterior teeth and changes in the occlusal plane, while combining these with changes in the vertical height of the anterior teeth to simulate the counterclockwise rotation of the mandible and guide the next step of braces design.

[0040] Step S3: Based on the digital models of the upper and lower jaws after the reconstruction of the child's maxillary occlusion, design the occlusal relationship of the posterior teeth after the occlusal reconstruction, as well as the maximum occlusal contact mode. The maximum occlusal contact mode includes anatomical occlusal contact surface, non-anatomical occlusal contact surface, or semi-anatomical occlusal contact surface, to obtain a design scheme for invisible braces that includes the gap. This step includes: Step S31: Open the digital models of the upper and lower jaws after the reconstruction of the child's maxillary occlusion in restorative design software (such as 3Shape Dental System, Exocad).

[0041] Step S32: Determine the vertical control target of the posterior teeth according to the treatment plan, determine the occlusal plane height, and automatically generate cusps and fissures; in some embodiments, the cusp height and fissure depth can be manually adjusted; it is also possible to uniformly cut a preset value on the occlusal contact surface of the upper and lower posterior teeth, the preset value being in the range of 0.5-1mm, preferably 0.75mm.

[0042] Step S33: The occlusal surface of the posterior teeth is restored using inlays to obtain an invisible brace containing the voids. The reconstructed inlays are then digitally manufactured using CAD-CAM. Specifically, the designed inlay file is imported into a five-axis cutting machine. A prepolymerized resin block of the corresponding color (such as Ivoire Blocs C&B or 3M LavaUltimate) is selected. The cutting machine precisely cuts the resin inlay according to the digital model, achieving a cutting accuracy of 10μm, with edge fit superior to manual cutting. The finished resin inlay only requires simple removal of cutting residue, such as cleaning with an ultrasonic cleaner, followed by fine polishing. No wax pattern or mold making is needed. The overall cycle of this step can be shortened from the traditional 3-5 days to 1-2 hours. In some embodiments, the inlay material can be resin to simulate voids, and then silicone can be 3D printed later to form the voids.

[0043] This step of the invisible braces design scheme includes upper and lower braces with gaps.

[0044] Step S4: Based on the design scheme of the invisible braces including the gap, construct the silicone component design scheme. In this embodiment, the size and shape of the constructed silicone component match the internal space of the gap. When in use, after the silicone component is inserted into the gap, it can just fill the entire internal space of the gap.

[0045] Step S5: Fabrication of the invisible braces designed in step S3 and the silicone components designed in step S4. In a specific implementation, based on the invisible braces design scheme and the silicone component design scheme, 3D printing can be used to fabricate the invisible braces and the silicone components.

[0046] Step S6: Design the retention and movement attachments for the posterior and anterior teeth, and use a molding machine to press the invisible braces for the posterior teeth. The implementation of this step can prepare for the subsequent wearing of invisible braces and silicone components.

[0047] For the preparation of invisible braces and silicone components using the above methods, clinical trials are conducted, and the braces are replaced periodically based on changes in the posterior tooth occlusal height and adjustments to the occlusal plane angle.

[0048] The three-dimensional occlusal induction type high-angle facial orthodontic appliance provided in this embodiment can control the dentition during the mixed dentition period in three dimensions (lateral, vertical, and sagittal directions). It utilizes the child's own chewing and biting forces as a source of power to train the child's vertical muscle strength, accurately and effectively control the occlusal plane, thereby controlling joint tension and pressure, indirectly affecting mandibular remodeling, promoting mandibular development and reverse selection; it simultaneously coordinates lateral width and occlusion, promotes normal development of the upper and lower jaws, promotes occlusal jumps in the upper and lower jaws, and achieves effective correction of muscle, bone, and teeth in a unified manner, promoting normal development of the jawbone and obtaining a better facial profile in children during the mixed dentition period.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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 or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A method for preparing a three-dimensional occlusal induction type high-angle bone facial orthodontic appliance, characterized in that, Includes the following steps: Obtain digital models of the child's upper and lower dentition; based on these models, construct digital models of the child's upper and lower jaws after occlusal reconstruction; based on these reconstructed models, design the posterior tooth occlusal relationship and maximum occlusal contact mode, resulting in a design scheme for invisible braces including gaps; based on this design, construct a flexible filling material design scheme; and fabricate invisible braces and flexible filling materials according to the design scheme.

2. The method for preparing the three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 1, characterized in that, The digital models of the maxillary and mandibular teeth after occlusal reconstruction include vertical occlusal reconstruction and sagittal occlusal reconstruction. When the posterior teeth are reconstructed vertically, the vertical opening of the posterior teeth is performed in the resting position. When the anterior teeth are reconstructed vertically, the vertical height of the anterior teeth is controlled by the invisible braces of the anterior teeth, or by inserting flexible filling material into the gap of the invisible braces, or by the anterior tooth gap.

3. The method for preparing the three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 1, characterized in that, Based on the digital models of the upper and lower jaws after the reconstruction of the child's bite, the posterior tooth occlusal relationship after the bite reconstruction and the maximum occlusal contact mode are designed. The process involves obtaining a design scheme for invisible braces that includes the gaps between the teeth, including: opening the digital models of the upper and lower jaws after the reconstruction of the child's bite in the restorative design software; determining the vertical control targets of the posterior teeth according to the treatment plan, determining the height of the occlusal plane, and automatically generating the cusps and fissures; and using inlays to restore the occlusal surfaces of the posterior teeth to obtain invisible braces that include the gaps between the teeth.

4. The method for preparing the three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 1, characterized in that, Based on the design scheme of invisible braces that includes gaps, when constructing the flexible filling design scheme, the size and shape of the constructed flexible filling are matched with the internal space of the gaps.

5. The method for preparing the three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 1, characterized in that, It also includes designing attachments for retention and movement of posterior and anterior teeth, and using a molding machine to press invisible braces for posterior teeth.

6. A three-dimensional occlusal induction type high-angle bony facial orthodontic appliance, characterized in that, Including invisible braces, which include upper and / or lower braces, the upper and / or lower braces having gaps into which flexible fillers can be inserted.

7. The oral cavity three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 6, characterized in that, The cavity may be one or more, and is located on the coronal side of the tooth surface.

8. The oral cavity three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 6, characterized in that, The shape of the gap may be elongated, elliptical, or square.

9. The oral cavity three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 8, characterized in that, The height of the gap is 1-10 mm.

10. The oral cavity three-dimensional occlusal induction type high-angle bone facial orthodontic appliance according to claim 6, characterized in that, The flexible filler includes silicone, silicone rubber, and / or polyurethane-based soft lining materials.

11. A method of using the oral cavity three-dimensional occlusal induction type high-angle bone facial orthodontic appliance as described in claim 6, characterized in that, When the flexible filler is used in conjunction with invisible braces: if a flexible filler is inserted and a gap is maintained between the upper and lower braces during wear, it is used to raise the posterior teeth; if a flexible filler is inserted and no gap is maintained between the upper and lower braces during wear, it is used to depress the posterior teeth.

Images