Self-stable dental scaffold device for guided bone regeneration

Abstract

The present application relates to the technical field of oral alveolar bone regeneration, and in particular to a self-stable tooth bracket device for guided bone regeneration. The device comprises a bracket body and a bracket retention ligand. The bracket body is provided with two symmetrically arranged self-stable wings, which are configured to be brought from one side of the tooth through a diagonal rotating action, and are slid along the tooth root surface into the relatively high area of the tooth root undercut area, and utilize the anatomical morphology of "narrow at the bottom and wide at the top" to realize the embracing type locking. Subsequently, the bracket retention ligand is docked from the opposite side, the self-stable wing limiting block on the bracket retention ligand is in mechanical locking cooperation with the self-stable wing, and a vertical direction embracing structure along the tooth contour is constructed. The split type design combined with the multiple locking mechanism can independently resist the axial and lateral load in the mastication process without relying on the support of adjacent teeth, maintain the long-term stability of the implant area, provide a reliable retention structure for the bone regeneration bracket material, and thus provide a reliable "steady state osteogenesis space" for the alveolar bone regeneration.

Description

Technical Field

[0001] This disclosure relates to medical devices in the field of oral medicine, specifically a self-stabilizing tooth framework device for periodontal bone regeneration, which is particularly suitable for guided bone regeneration treatment in alveolar bone defect areas of patients with moderate to severe periodontitis. Background Technology

[0002] Periodontitis is one of the leading causes of tooth loss in adults, often leading to horizontal or vertical resorption of the alveolar bone. As the disease progresses, the height of the alveolar bone decreases significantly, forming complex bone defect morphologies that severely affect subsequent implant restorations or orthodontic treatment. Currently, guided bone regeneration (GBR) technology has become an important means of restoring alveolar bone volume. Its core lies in maintaining the space of the bone graft area and the stability of the implant, preventing soft tissue invasion, and ensuring new bone formation.

[0003] However, existing GBR technology faces significant challenges when natural teeth are present. First, the space around the bone defect of natural tooth roots is narrow and irregular in shape, making it difficult for traditional titanium mesh and barrier membranes to adhere and fix. Second, bone graft materials such as bone powder or "viscous bone" lack mechanical strength and are prone to micro-movements of >50μm under the micro-forces caused by the movement of the lip, cheek, and tongue muscles, resulting in fibrous healing rather than osseointegration. Third, patients with moderate periodontitis (second-degree periodontitis) often have teeth with 1–2mm of pathological loosening, which causes dynamic displacement under chewing or soft tissue traction, further exacerbating the instability of the implant material.

[0004] Although existing patents have proposed self-retaining frameworks based on tooth root undercut structures (such as CN112998886B), their designs mainly focus on retention during initial insertion and do not fully consider the risk of framework displacement caused by tooth mobility during long-term bone formation. Such frameworks may loosen or even fall off when subjected to force or muscle pressure as the tooth root moves, and cannot achieve true "long-term stability".

[0005] Therefore, there is an urgent need for a new type of scaffold structure that can be smoothly positioned and resist dynamic interference over a long period of time, so as to achieve safe and stable bone regeneration around the removable tooth. Summary of the Invention

[0006] This disclosure provides a self-stabilizing dental scaffold device for guiding bone regeneration, solving problems such as scaffold instability and bone regeneration failure caused by tooth mobility in existing technologies. Through an innovative split structure and a bidirectional mechanical locking mechanism, the scaffold automatically adapts to and responds to changes in external force after insertion, forming a self-stabilizing effect that becomes more stable under stress. This creates a stable self-retention structure around the natural tooth, providing a reliable retention structure for the bone regeneration scaffold material, thereby providing a reliable "steady-state osteogenic space" for alveolar bone regeneration.

[0007] This disclosure provides a self-stabilizing dental scaffold device for guiding bone regeneration, comprising: A support body is configured to be brought in from the first side of the tooth toward the opposite second side and to at least partially surround the tooth; A stent fixation ligand is configured to be brought in from the opposite direction to the stent body and dock with the stent body; The main body of the support is provided with two self-stabilizing wings. The two self-stabilizing wings are configured to slide from opposite sides along the root surface into the high area of ​​the undercut area of ​​the root during the insertion process, and to achieve a circumferential locking by utilizing the anatomical shape of the undercut area which is narrow at the bottom and wide at the top. The support retainer is provided with a self-stabilizing wing limiting block, which is configured to lock into the self-stabilizing wing after the support retainer is in place.

[0008] Optionally, the support body is configured such that, upon initial positioning, the self-stabilizing wing tilts and aligns with the undercut area on the root surface, and through an oblique rotational action, the self-stabilizing wing rotates and rises to the high position region of the undercut area.

[0009] Optionally, the two self-stabilizing wings are symmetrically arranged on the support body and respectively encircle the root of the tooth from both sides; The free end of the self-stabilizing wing extends beyond the central radius of the tooth root, so that the circumference of the self-stabilizing wing around the tooth root is greater than 180 degrees.

[0010] Optionally, the first side is the labial or buccal side of the tooth, and the corresponding second side is the lingual or palatal side of the tooth; the support body is brought in from the labial or buccal side toward the lingual or palatal side, and the corresponding support retention ligand is brought in from the lingual or palatal side toward the labial or buccal side. Alternatively, the first side is the lingual or palatal side of the tooth, and the corresponding second side is the labial or buccal side of the tooth; the support body is brought in from the lingual or palatal side toward the labial or buccal side, and the corresponding support retention ligand is brought in from the labial or buccal side toward the lingual or palatal side.

[0011] Optionally, the self-stabilizing wing is provided with a mating structure; The self-stabilizing wing limiting block is provided with a locking part; The locking part is configured such that when the bracket retaining ligand is in place, the locking part and the mating structure form a mutually embedded mechanical interference, thereby preventing the self-stabilizing wing from dislodging from the recessed area.

[0012] Optionally, the locking part is any one of hook-shaped, L-shaped, T-shaped, tooth-shaped or wedge-shaped; The mating structure is any one of a notch, groove, bayonet, or hole that matches the shape of the locking part.

[0013] Optionally, the locking part is a hook-shaped latching part, and the mating structure is a hook-shaped notch; After the hook-shaped buckle and the hook-shaped notch are aligned, they form a hook-lock engagement to resist dislocation forces from multiple directions.

[0014] Optionally, the hook-shaped latch has an arcuate profile, and the radius of curvature of the arcuate profile matches the radius of curvature of the hook-shaped notch; The arc-shaped profile is configured such that when the support retainer is in place, the hook-shaped buckle slides into the hook-shaped notch along the arc-shaped profile to form an arc-shaped contact, thereby increasing the contact area and stability of the buckle engagement.

[0015] Optionally, the arcuate profile of the hook-shaped buckle is a concave arc, and its center of curvature is located in the internal direction of the support retention ligand; The hook-shaped notch is an outwardly convex arc shape, and its center of curvature is located in the outer direction of the self-stabilizing wing; The concave arc and the convex arc fit together to form an interlocking arc surface, resisting dislocation forces from multiple directions.

[0016] Optionally, each of the two self-stabilizing wings is provided with a positioning guide rail; The positioning guide has an arc-shaped profile, the curvature of which matches the peak and trough shape of the alveolar bone surface. The positioning guide is configured such that, during the insertion of the support body, the self-stabilizing wing smoothly embeds into the undercut area of ​​the tooth root by conforming to the peaks and troughs of the alveolar bone surface through the arc-shaped contour.

[0017] Optionally, the stent retention ligand is provided with an anti-retraction shoulder, configured to form mechanical interference with the stent body after docking, to prevent the stent retention ligand from retracting in the opposite direction; The anti-retraction shoulder is an L-shaped block, boss, or arc-shaped shoulder provided at the end of the support fixing ligand, and the anti-retraction shoulder cooperates with the corresponding groove or limiting surface on the support body.

[0018] This disclosure provides a self-stabilizing dental scaffold device for guiding bone regeneration, comprising: a scaffold body and a scaffold retention ligand. The scaffold body has two symmetrically arranged self-stabilizing wings configured to be inserted from one side of the tooth via an oblique rotational motion and slide along the root surface into the relatively high region of the root undercut, utilizing the root's "narrower at the bottom and wider at the top" anatomical shape to achieve a circumferential locking. Subsequently, the scaffold retention ligand engages from the opposite side, with its self-stabilizing wing limiting block forming a mechanical locking engagement with the self-stabilizing wing, constructing a circumferential structure along the vertical direction of the tooth contour. This split design, combined with multiple locking mechanisms, can independently resist and share axial and lateral loads during chewing without relying on adjacent teeth for support, maintaining long-term stability of the implantation area and providing a reliable retention structure for bone regeneration scaffold materials, thereby providing a reliable "steady-state osteogenic space" for alveolar bone regeneration.

[0019] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0020] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein: Figure 1 This is a schematic diagram of the overall structure of the stent body and the stent fixation ligand disclosed in this invention; Figure 2 This is another schematic diagram of the overall structure of the stent body and the stent fixation ligand; Figure 3 This is a schematic diagram of the main structure of the support frame; Figure 4 This is another structural schematic diagram of the main body of the support frame; Figure 5 This is a schematic diagram of the structure of the stent fixation ligand; Figure 6 Another structural schematic diagram of the stent fixation ligand; Figure 7 A schematic diagram of the peak and trough structure on the surface of the alveolar bone; Figure 8 This is a flowchart illustrating the method of fitting a brace.

[0021] The annotations in the attached figures are explained as follows: 1. Support body; 1-1 self-stabilizing wing; 1-2 positioning guide rail; 1-3 first self-stabilizing surface; 1-4 support body structure surface; 2. Support fixation ligand; 2-1 self-stabilizing wing limiting block; 2-2 anti-retraction shoulder; 2-3 second self-stabilizing surface; 2-4 support fixation ligand structure surface. Detailed Implementation

[0022] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments.

[0023] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0024] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0025] Furthermore, the terms "setup," "connection," and "fixation" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances. In the embodiments of this disclosure, communication connections include electrical connections for transmitting electrical signals and optical fiber connections for transmitting optical signals. Without departing from the inventive concept of the embodiments of this disclosure, communication connections can be wired or wireless.

[0026] Unless otherwise stated, the term "multiple" means two or more.

[0027] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0028] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other. Example 1

[0030] like Figure 1-6 As shown, this disclosure provides a self-stabilizing dental scaffold device for guiding bone regeneration, comprising: A support body (1) is configured to be inserted from the first side of the tooth toward the opposite second side, and to at least partially surround the tooth. The support body (1) has two self-stabilizing wings (1-1), which are configured to slide from opposite sides along the root surface into the high region of the undercut area of ​​the root during insertion, utilizing the anatomical shape of the undercut area (narrower at the bottom and wider at the top) to achieve a circumferential locking. The two self-stabilizing wings (1-1) are symmetrically arranged on the support body (1) and encircle the root from both sides of the tooth. The free ends of the self-stabilizing wings (1-1) extend beyond the central radius of the root, such that the encirclement range of the self-stabilizing wings around the root is greater than 180 degrees. Wherein, the first side can be the labial or buccal side of the tooth, and the corresponding second side is the lingual or palatal side of the tooth. The corresponding support body (1) can be brought in from the labial or buccal side towards the lingual or palatal side, and the corresponding support retention ligand (2) can be brought in from the lingual or palatal side towards the labial or buccal side; or, the first side is the lingual or palatal side of the tooth, and the corresponding second side is the labial or buccal side of the tooth. The support body (1) can be brought in from the lingual or palatal side towards the labial or buccal side, and the corresponding support retention ligand (2) can be brought in from the labial or buccal side towards the lingual or palatal side. Wherein, the bringing in from the first side of the tooth towards the opposite second side includes: during initial positioning, tilting the self-stabilizing wing (1-1) and aligning it with the undercut area on the root surface, specifically the lower part / proximal undercut area on the root surface; and rotating the self-stabilizing wing (1-1) to the upper part of the undercut area through an oblique rotation action.

[0031] A support retainer (2) is configured to be brought in from the opposite direction to the support body (1) and dock with the support body (1); the support retainer (2) is provided with a self-stabilizing wing limiting block (2-1), and the self-stabilizing wing limiting block (2-1) is configured to form a locking engagement with the self-stabilizing wing (1-1) after the support retainer (2) is docked in place; thereby forming a circumferential locking along the vertical direction of the tooth contour surface.

[0032] The surfaces of the scaffold body (1) and / or the scaffold fixation ligand (2) are wholly or partially coated with a biocompatible coating to promote bone tissue healing; or, the scaffold body (1) and / or the scaffold fixation ligand (2) are printed / manufactured from a bone regeneration guiding material. The two self-stabilizing wings (1-1) may be integrally formed with the scaffold body (1), or fixedly connected by any of the following methods: welding, bonding, or mechanical connection.

[0033] It should be noted that the "high position of the undercut area" refers to a relatively high position within the undercut area of ​​the tooth root. Its specific height can be adaptively set according to the placement path of the framework, the structural morphology of the self-stabilizing wing, and the target retention depth. This position should meet the following conditions: (1) It should be located within the undercut anatomical area of ​​the tooth root surface, which is narrow at the bottom and wide at the top, so as to achieve the encircling locking of the self-stabilizing wing; (2) It should allow the self-stabilizing wing to slide smoothly into and pass over the narrow section of the lower part of the undercut during oblique rotation; (3) In the final placement state, the free end of the self-stabilizing wing should exceed the center radius of the tooth root, forming an effective wrapping angle of more than 180° to achieve stable mechanical self-locking. Therefore, the "high position of the undercut area" is a functional relative concept, emphasizing the appropriate position of the framework when it reaches a stable locking state in a clinical and biomechanical sense, rather than a strict geometric apex.

[0034] This embodiment utilizes two symmetrically distributed self-stabilizing wings on the framework body, allowing it to slide along the root surface into the high region of the undercut during oblique rotation. This leverages the root's "wider at the top, narrower at the bottom" anatomical feature to achieve vertical circumferential locking. This design overcomes the limitations of traditional GBR technology, which relies on adjacent teeth or external fixation (such as titanium screws), enabling the framework to achieve independent retention around a single loose tooth. Furthermore, the free end of the self-stabilizing wing extends beyond the root's central radius, achieving a circumferential angle exceeding 180°, significantly enhancing anti-dislocation capability. Combined with the subsequent docking of the framework retention ligand, a complete mechanical interlocking system is formed, ensuring the entire device remains stable even under axial and lateral forces generated during chewing, providing a reliable "steady-state osteogenic space" for guiding alveolar bone regeneration. In addition, the separate insertion path from the labial / buccal side to the lingual / palatal side adapts to the oral surgical field of view, improving clinical operability. Example 2

[0035] In this embodiment of the present disclosure, the self-stabilizing wing (1-1) is provided with a mating structure; The self-stabilizing wing limiting block (2-1) is provided with a locking part; wherein the locking part is any one of hook shape, L shape, T shape, tooth shape or wedge shape; the mating structure is any one of notch, groove, bayonet or hole that matches the shape of the locking part.

[0036] The locking part is configured such that when the bracket retaining ligand (2) is in place, the locking part and the mating structure form a mutually embedded mechanical interference, thereby preventing the self-stabilizing wing (1-1) from coming out of the recessed area.

[0037] In this embodiment, the locking of the support body and the support fixation ligand is achieved by the locking part of the self-stabilizing wing limiting block (2-1) and the cooperating structure provided on the self-stabilizing wing (1-1).

[0038] In this embodiment, an active mechanical anti-disengagement mechanism is constructed by setting a mating structure on the self-stabilizing wing (1-1) and a locking part on the self-stabilizing wing limiting block (2-1). When the support retaining ligand is fully pushed into the docking position, the two form a mutually embedded mechanical interference, effectively preventing the self-stabilizing wing from accidentally disengaging from the undercut area. This structure significantly improves the safety of the device in a dynamic oral environment, especially when teeth undergo micro-movements due to muscle activity, it can still maintain a locked and stable state. Different shape combinations (such as hook / L-shaped / T-shaped matching with grooves / jaws) can be flexibly adapted according to specific tooth positions and force conditions, improving versatility and reliability. Example 3

[0039] In this embodiment, the locking part is a hook-shaped latch, and the mating structure is a hook-shaped notch. After the hook-shaped latch and the hook-shaped notch are aligned, they form a hook-lock fit to resist disengagement forces in multiple directions. The hook-shaped latch has an arc-shaped profile, and the radius of curvature of the arc-shaped profile matches the radius of curvature of the hook-shaped notch. Specifically, the arc-shaped profile is configured such that when the support retaining ligand (2) is aligned, the hook-shaped latch slides along the arc-shaped profile into the hook-shaped notch, forming an arc-shaped contact, thereby increasing the contact area and stability of the latch fit.

[0040] Furthermore, the arcuate profile of the hook-shaped latch is concave, with its center of curvature located in the internal direction of the support retaining ligand (2); the hook-shaped notch is convex, with its center of curvature located in the external direction of the self-stabilizing wing (1-1); the concave arc and the convex arc fit together to form an arc interlock, resisting dislocation forces from multiple directions. The self-stabilizing wing limiting block (2-1) is a protrusion structure on the support retaining ligand (2), and the hook-shaped latch is located at the end of the protrusion structure. The protrusion structure is selected from any combination of one or more of the following forms: (a) hemispherical protrusion; (b) elliptical protrusion; (c) conical boss; (d) frustum-shaped boss; (e) stepped protrusion; (f) wedge-shaped protrusion; (g) arcuate ridge protrusion. Other protrusion structures capable of achieving the functions of this application may also be used.

[0041] In this embodiment, an interlocking structure is formed by an arc-shaped hook-shaped locking part and an outwardly convex arc-shaped hook-shaped notch. This not only ensures smooth initial insertion but also creates a large-area arc-shaped contact after full placement, significantly increasing the contact area and shear resistance. Specifically, the concave arc (located at the retention ligand) and the outwardly convex arc (located at the self-stabilizing wing) have opposite curvature centers, causing the external force to transform into a compressive tendency rather than a separation tendency when subjected to force, buccal muscle thrust, or tongue muscle pressure. This achieves a self-reinforcing and self-stabilizing effect of "the more force applied, the tighter the lock becomes." This structure effectively resists dislocation forces from multiple directions, greatly improving the long-term stability of the scaffold in the complex oral cavity biomechanical environment and ensuring that the bone regeneration process is not disturbed. Example 4

[0042] In this embodiment, the self-stabilizing wing (1-1) forms a first self-stabilizing surface (1-3) on its inner surface facing the tooth root. The first self-stabilizing surface (1-3) has a curved profile that matches the tooth root surface near the undercut area. After the self-stabilizing wing is embedded in place, the first self-stabilizing surface (1-3) forms a surface contact with the tooth root surface, which can generate normal pressure and / or frictional force, so that the self-stabilizing wing can achieve self-retention in the tooth root undercut area.

[0043] Furthermore, the scaffold body is provided with a scaffold body tissue surface (1-4), which has a curved profile matching the surface morphology of the alveolar bone; the scaffold body tissue surface (1-4) is configured to form a first contact area with the alveolar bone surface after the scaffold body is in place. The first self-stabilizing surface forms a second contact area with the root surface.

[0044] The first contact area and the second contact area together form a multi-point support interface, which is configured to disperse the biting force applied to the teeth, avoid local stress concentration, and protect the periodontal tissues from damage. At the same time, the tissue surface of the support body and the curved contour of the first self-stabilizing surface are configured to form a tight fit with the alveolar bone and root surface after the support body is rotated into place, providing an additional frictional locking effect and enhancing the long-term stability of the device.

[0045] In this embodiment, by designing the tissue surface and the first self-stabilizing surface of the scaffold body as curved contours highly matched to the alveolar bone and root surfaces, a multi-point support interface is formed after positioning. This not only effectively disperses the chewing force over a wider area, avoiding tissue compression or necrosis caused by local stress concentration, but also generates a significant frictional locking effect through extensive contact, further enhancing the overall stability of the device. In particular, after horizontal compression, the tight contact between the curved surface and the tissue simulates the mechanical behavior of natural periodontal support structures, protecting the fragile periodontal tissues and creating an ideal environment for bone regeneration without micromovement, which is a key guarantee for achieving functional reconstruction. Example 5

[0046] In this embodiment of the present disclosure, the scaffold retention ligand 2 forms a second self-stabilizing surface (2-3) on the inner surface of the tooth root, the second self-stabilizing surface (2-3) having a curved profile that matches the tooth root surface; After the framework retainer is horizontally pressed into place, the curved profile of the second self-stabilizing surface forms a surface contact with the root surface, which can generate normal pressure and / or frictional force, so that the framework retainer is tightly attached to the root surface; the first self-stabilizing surface and the second self-stabilizing surface together form a counter-clamping and locking of the root.

[0047] The scaffold retention ligand 2 is provided with a scaffold retention ligand tissue surface (2-4), which has a curved profile that matches the surface morphology of the alveolar bone; the scaffold retention ligand tissue surface (2-4) forms a third contact area with the alveolar bone surface after the scaffold retention ligand is in place; the second self-stabilizing surface forms a fourth contact area with the root surface.

[0048] The third contact area and the fourth contact area together form a multi-point support interface, which is configured to disperse the occlusal force applied to the teeth, avoid local stress concentration, and protect the periodontal tissues from damage. At the same time, the tissue surface of the scaffold retention ligand and the curved contour of the second self-stabilizing surface are configured to form a tight fit with the alveolar bone and root surface after horizontal pressing, providing an additional frictional locking effect and enhancing the long-term stability of the device.

[0049] In this embodiment, a bidirectional opposing clamping structure is formed by providing a first self-stabilizing surface (1-3) on the framework body and a second self-stabilizing surface (2-3) on the framework retention ligand. When the two components are fully aligned, the two inclined surfaces tightly adhere to the root surface from both sides, generating symmetrical normal pressure and achieving a "clamp-like" locking effect. This design changes the unbalanced force mode of traditional unilateral fixation, making the load evenly distributed around the entire root, which not only improves the overall stability but also avoids periodontal ligament damage or root resorption caused by local stress concentration. More importantly, this opposing clamping structure has stronger resistance to external disturbances (such as pressure from the buccal and labial muscles), ensuring that the framework remains stable throughout the long-term healing process. Example 6

[0050] In this embodiment, each of the two self-stabilizing wings (1-1) is provided with a positioning guide rail (1-2); the positioning guide rail (1-2) has an arc-shaped profile, the curvature of which matches the peak and trough shape of the alveolar bone surface; the positioning guide rail (1-2) is configured such that, during the insertion of the support body (1), the arc-shaped profile conforms to the peak and trough shape of the alveolar bone surface (e.g., during insertion). Figure 7 As shown), the self-stabilizing wing (1-1) is guided to smoothly embed into the root undercut area.

[0051] This embodiment of the invention achieves precise and low-resistance insertion of the scaffold body by setting an arc-shaped placement guide (1-2) that matches the morphology of the alveolar bone peaks and troughs. During the rotational insertion of the scaffold body, the placement guide guides the scaffold to undergo initial displacement, allowing it to slide naturally along the undulations of the alveolar bone. This effectively guides the self-stabilizing wings to accurately align with the undercut area, avoiding deviation or misalignment, reducing the difficulty of the surgical procedure, shortening the placement time, and minimizing trauma to surrounding tissues, thereby improving patient comfort and postoperative healing quality. Example 7

[0052] In this embodiment, the support retaining ligand (2) is provided with an anti-retraction shoulder (2-2), configured to form mechanical interference with the support body (1) after docking, preventing the support retaining ligand (2) from retracting in the opposite direction. The anti-retraction shoulder (2-2) is an L-shaped block, boss, or arc-shaped shoulder provided at the end of the support retaining ligand (2), and the anti-retraction shoulder (2-2) cooperates with the corresponding groove or limiting surface on the support body (1).

[0053] The L-shaped stop can be a protruding structure with an "L"-shaped cross-section, consisting of a vertical segment and a horizontal segment, resembling the letter "L". Its working principle is as follows: when the support retainer is pushed into place, the horizontal segment of the L-shaped stop engages below the edge of the groove on the support body, creating a locking effect similar to a "step." Any attempt to pull it out in the opposite direction will be blocked by this horizontal segment, thus achieving the anti-reverse function.

[0054] A boss can refer to a columnar or block-shaped structure protruding from the surface of a main body, and can be circular, square, or other geometrically shaped. In this invention, it specifically refers to a small protrusion used to form a stop. Its working principle can be as follows: the boss acts as a form of anti-retraction shoulder. When the support retaining ligand is pushed to the bottom, the boss will embed into the corresponding groove on the support body, or press against a certain limiting surface, preventing it from retracting.

[0055] A curved shoulder is a shoulder structure with a curved profile, its outer edge being curved rather than right-angled or flat. Its working principle is as follows: the curved shoulder design not only provides anti-reverse function but also optimizes wearing comfort and force distribution. Its curved edge better conforms to the curved surfaces of periodontal tissues or opposite parts, distributing stress more evenly when subjected to biting forces or muscle pressure, avoiding localized stress concentration. Furthermore, the curved structure also helps guide the sliding trajectory during installation, reducing frictional resistance.

[0056] In this embodiment, without a ligand, the stent body can dislodge in two ways: ① by rotational dislocation, requiring an anti-dislocation shoulder to prevent rotation; ② under excessive force, the stent's self-stabilizing wings can deform, expand outwards, and fail, leading to dislocation. The anti-dislocation shoulder can also prevent this failure. By providing an anti-dislocation shoulder (2-2) at the end of the stent's ligand fixation, in the form of an L-shaped block, boss, or arc-shaped shoulder, and forming a mechanical barrier with the limiting surface or groove on the stent body, the anti-dislocation shoulder effectively prevents the fixation ligand from retracting or dislodging under reverse tension (such as soft tissue traction or accidental contact). This structure provides a final safety line for the stent system, maintaining device integrity, especially in the early postoperative period when soft tissue swelling changes or the patient accidentally touches the device. Its simple geometric interference design does not affect overall aesthetics or biocompatibility, but greatly improves the safety margin and reliability for clinical use. Example 8

[0057] like Figure 8 As shown, this disclosure provides a method for wearing a dental framework for bone regeneration therapy, characterized by the following steps: Step 1: Bring the main body of the support (1) from the first side (labial / buccal side) of the tooth to the opposite second side (lingual / palatal side), so that the two self-stabilizing wings (1-1) set on the main body of the support (1) slide from the opposite sides to the high position of the undercut area of ​​the tooth root, thereby achieving a circumferential locking of the tooth. It should be noted that the "high position of the undercut area" is not limited to the absolute highest point in the anatomical structure, but refers to a relatively high position within the undercut area of ​​the tooth root. Its specific height can be adaptively set according to the placement path of the support, the structural shape of the self-stabilizing wings and the target retention depth. This position should meet the following conditions: (1) It is located within the undercut anatomical area of ​​the tooth root surface that is narrow at the bottom and wide at the top, so that the circumferential locking of the self-stabilizing wings can be achieved; (2) The self-stabilizing wings are allowed to slide smoothly into and pass through the narrow section of the undercut during oblique rotation; (3) In the final placement state, the free end of the self-stabilizing wings exceeds the center radius of the tooth root, forming an effective wrapping angle of more than 180°, so as to achieve stable mechanical self-locking. Therefore, the "high region of the inverted concave area" is a functional relative concept, emphasizing the appropriate position of the stent when it reaches a stable and locked state in a clinical and biomechanical sense, rather than a strict geometric apex.

[0058] Step 2: Bring the stent fixation ligand (2) in from the opposite direction to the stent body (1) so that the stent fixation ligand (2) docks with the stent body (1).

[0059] Step 3: Make the self-stabilizing wing limiting block (2-1) on the support fixation ligand (2) lock with the self-stabilizing wing (1-1); specifically, the hook-shaped buckle of the self-stabilizing wing limiting block (2-1) and the hook-shaped notch of the self-stabilizing wing form a hook-locking engagement.

[0060] Step 4: Confirm that the teeth are not abnormally loose.

[0061] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A self-stabilizing dental scaffold device for guiding bone regeneration, characterized in that, include: A support body is configured to be brought in from the first side of the tooth toward the opposite second side and to at least partially surround the tooth; A stent fixation ligand is configured to be brought in from the opposite direction to the stent body and dock with the stent body; The main body of the support is provided with two self-stabilizing wings. The two self-stabilizing wings are configured to slide from opposite sides along the root surface into the high area of ​​the undercut area of ​​the root during the insertion process, and to achieve a circumferential locking by utilizing the anatomical shape of the undercut area which is narrow at the bottom and wide at the top. The support retainer is provided with a self-stabilizing wing limiting block, which is configured to lock into the self-stabilizing wing after the support retainer is in place.

2. The support device according to claim 1, wherein the support body is configured such that, upon initial positioning, the self-stabilizing wing tilts and aligns with the undercut area on the root surface, and through an oblique rotational action, the self-stabilizing wing rotates and rises to the high position region of the undercut area.

3. The support device according to claim 1, characterized in that: The two self-stabilizing wings are symmetrically arranged on the support body and respectively encircle the root of the tooth from both sides; The free end of the self-stabilizing wing extends beyond the central radius of the tooth root, so that the circumference of the self-stabilizing wing around the tooth root is greater than 180 degrees.

4. The support device according to claim 1, characterized in that: The first side is the labial or buccal side of the tooth, and the corresponding second side is the lingual or palatal side of the tooth; the support body is brought in from the labial or buccal side toward the lingual or palatal side, and the corresponding support retention ligand is brought in from the lingual or palatal side toward the labial or buccal side. Alternatively, the first side is the lingual or palatal side of the tooth, and the corresponding second side is the labial or buccal side of the tooth; the support body is brought in from the lingual or palatal side toward the labial or buccal side, and the corresponding support retention ligand is brought in from the labial or buccal side toward the lingual or palatal side.

5. The support device according to claim 1, characterized in that: The self-stabilizing wing is equipped with a mating structure; The self-stabilizing wing limiting block is provided with a locking part; The locking part is configured such that when the bracket retaining ligand is in place, the locking part and the mating structure form a mutually embedded mechanical interference, thereby preventing the self-stabilizing wing from dislodging from the recessed area.

6. The support device according to claim 5, characterized in that: The locking part is any one of the following: hook-shaped, L-shaped, T-shaped, tooth-shaped, or wedge-shaped; The mating structure is any one of a notch, groove, bayonet, or hole that matches the shape of the locking part.

7. The support device according to claim 6, characterized in that: The locking part is a hook-shaped buckle, and the mating structure is a hook-shaped notch; After the hook-shaped buckle and the hook-shaped notch are aligned, they form a hook-lock engagement to resist dislocation forces from multiple directions.

8. The support device according to claim 7, characterized in that: The hook-shaped buckle has an arc-shaped profile, and the radius of curvature of the arc-shaped profile matches the radius of curvature of the hook-shaped notch; The arc-shaped profile is configured such that when the support retainer is in place, the hook-shaped buckle slides into the hook-shaped notch along the arc-shaped profile to form an arc-shaped contact, thereby increasing the contact area and stability of the buckle engagement.

9. The support device according to claim 8, characterized in that: The arc-shaped profile of the hook-shaped buckle is a concave arc, and its center of curvature is located in the internal direction of the support fixation ligand. The hook-shaped notch is an outwardly convex arc shape, and its center of curvature is located in the outer direction of the self-stabilizing wing; The concave arc and the convex arc fit together to form an interlocking arc surface, resisting dislocation forces from multiple directions.

10. The support device according to claim 1, characterized in that: Each of the two self-stabilizing winglets is equipped with a positioning guide rail; The positioning guide has an arc-shaped profile, the curvature of which matches the peak and trough shape of the alveolar bone surface. The positioning guide is configured such that, during the insertion of the support body, the self-stabilizing wing smoothly embeds into the undercut area of ​​the tooth root by conforming to the peaks and troughs of the alveolar bone surface through the arc-shaped contour.

11. The support device according to claim 1, characterized in that: The stent retention ligand is provided with an anti-retraction shoulder, which is configured to form mechanical interference with the stent body after docking, preventing the stent retention ligand from retracting in the opposite direction. The anti-retraction shoulder is an L-shaped block, boss, or arc-shaped shoulder provided at the end of the support fixing ligand, and the anti-retraction shoulder cooperates with the corresponding groove or limiting surface on the support body.

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