Three-dimensional-configuration viscous bone forming forceps for periodontal tissue regeneration

Abstract

The invention belongs to the technical field of periodontal repair medical instruments, and particularly relates to a pair of three-dimensional viscous bone forming forceps for periodontal tissue regeneration, which comprises two forceps handles, a hinge piece and locking structures arranged at the tail ends of the forceps handles, the working ends of the two forceps handles are provided with detachable lip side viscous bone forming structures or tongue side forming structures. Each lip side viscous bone forming structure comprises a first arc-shaped concave block, a second arc-shaped concave block and a third arc-shaped concave block, wherein the first arc-shaped concave block is fixed to the end of one forceps handle through a screw; the first arc-shaped convex block is fixed to the end of the other clamp handle through a screw, the outer convex face of the first arc-shaped convex block is matched with the arc face of the first arc-shaped concave block in an inserted mode, and a first working groove and the like are formed in the face, close to the first arc-shaped convex block, of the first arc-shaped convex block. According to the three-dimensional-configuration viscous bone forming forceps, through physical property improvement (viscosity solidification) and shape presetting (dissecting to be matched with a groove type) of a bone grafting material, the three major pain points of bone meal collapse, insufficient increment of key sites and operation dependence on experience in a traditional PAOO operation are solved, and the bone increment accuracy and long-term stability are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the field of periodontal restorative medical device technology, and specifically relates to a three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration. Background Technology

[0002] In orthodontic treatment, patients with skeletal Class II or III malocclusion often present with thin bone plates in the mandibular anterior region, multiple fenestrations, and dehiscences. During orthodontic tooth movement, the integrity of the alveolar bone around the tooth roots is easily further compromised, significantly increasing the risk of gingival recession, tooth loosening, and even tooth loss. To address this challenge, periodontal-assisted orthodontic cortical osteotomy and bone grafting (PAOO) is widely used clinically. This procedure stimulates local bone remodeling through cortical osteotomy and implants bone substitute material in the bone defect area to thicken the labial / lingual bone plate, thereby providing support for safe tooth movement.

[0003] The standard PAOO surgical procedure in the current technology usually includes three steps: first, powdered bone substitute material (such as xenograft bone powder Bio-Oss) is directly deposited on the bone defect area; then, an absorbable collagen membrane (such as Bio-Gide) is used to cover the surface of the bone powder; finally, soft tissue tension-reducing sutures are performed, and the gingival flap is repositioned coronally and then tightly sutured.

[0004] However, this technology has significant drawbacks: Poor shape maintenance ability - Because the powdered bone substitute material is loose, it is difficult to maintain the shape of the implant in open defects (non-encapsulated surfaces) that lack bone wall support. Especially in the environment of low soft tissue tension in the lingual region of the mandibular anterior teeth, the bone graft material is prone to collapse and shift towards the root and floor of the mouth after surgery, which directly leads to insufficient bone increase in key areas such as the cementoenamel junction (CEJ) and the middle of the root (thickness is often <1.5mm). The surgical outcome is uncontrollable—the physical properties of the powdered material make intraoperative shaping highly dependent on the doctor's experience, making it difficult to achieve precise three-dimensional shape control. Follow-up data at 6 months postoperatively showed that the traditional bone powder group had an average bone thickness loss of >50% at CEJ, and the bone thickness in the middle of the root was only 1.2mm, far below the ideal value of >2mm. Low operational efficiency – The repeated application of bone powder extends the operation time by an average of 15–20 minutes, which not only increases the risk of infection due to wound exposure, but also drives up medical costs due to the need for excessive filling material to compensate for collapse.

[0005] To overcome the above-mentioned shortcomings, existing improvement attempts still have limitations: digitally customized adhesive bone shaping instruments can improve stability, but the production cycle is as long as 3-5 days, increasing the number of patient visits by 1-2 times, and the cost per case exceeds 2,000 yuan, and high-temperature sterilization is prone to deformation; manual mixed adhesive bone (bone powder material is spread on a plate, and fibrin glue is dripped in and then naturally solidified) improves the material cohesion, but it cannot form a personalized three-dimensional configuration that matches the anatomical shape, and the shaping accuracy of the cementoenamel junction (CEJ) is still insufficient. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing periodontal-assisted orthodontic cortical bone grafting (PAOO) procedures, which lack standardized and high-precision bone graft morphology control methods, resulting in unstable bone augmentation effects and low surgical efficiency, this invention provides a three-dimensional viscous bone shaping forceps for periodontal tissue regeneration. This instrument can rapidly shape viscous bone blocks that are adapted to the anatomical structure, fundamentally solving the problem of easy collapse and displacement of traditional powdered bone substitute materials.

[0007] (II) Technical Solution This invention is achieved through the following technical solution: This invention proposes a three-dimensional adhesive bone forming forceps for periodontal tissue regeneration, including two forceps handles, a hinge, and a locking structure at the end of the forceps handles. The two forceps handles are cross-connected by the hinge, and the working ends of the two forceps handles are equipped with a detachable labial adhesive bone forming structure or a lingual forming structure (screws are detachably fixed to the working ends of the forceps handles to achieve quick replacement of the working ends). The labial adhesive bone-forming structure includes: The first arc-shaped concave block is fixed to the end of a pliers handle by a screw; The first arc-shaped convex block is fixed to the end of another clamp handle by screws. Its outer convex surface is inserted into the arc surface of the first arc-shaped concave block, and a first working groove is provided on the side close to the first arc-shaped convex block. The tongue-side molding structure includes: The second arc-shaped concave block is fixed to the end of a pliers handle by a screw; The second arc-shaped convex block is fixed to the end of another clamp handle by screws. Its outer convex surface is inserted into the arc surface of the second arc-shaped concave block, and a second working groove is provided on the side near the second arc-shaped concave block. The configurations of the first and second working slots are pre-designed based on the anatomical data of the mandibular anterior region and the bone graft volume requirements, and are used to compress and form a viscous bone block that adapts to the three-dimensional morphology of the labial or lingual bone defect area. The size data of the first and second working slots are optimized and determined based on the statistical mean of the mandibular anterior region bone defect morphology, orthodontic tooth movement range and osteogenic rate data of Chinese patients with skeletal Class II and Class III malocclusion. The groove contour of the first working groove is adapted to the physiological curvature of the labial bone plate of the mandibular anterior teeth. The groove depth gradually increases from the alveolar ridge crest to the root apex, and the groove length covers the cementoenamel junction to 5 mm apical. The groove contour of the second working groove is adapted to the physiological curvature of the lingual bone plate of the mandibular anterior teeth. The groove depth gradually increases from the alveolar ridge crest to the root apex, and the groove length covers the cementoenamel junction to 5 mm apical. The first and second working grooves are filled with a viscous bone filler; the viscous bone filler is composed of the following components: Bone replacement materials (0.5–1.0 g), platelet derivatives; The platelet derivatives include autologous fibrin glue (AFG), the upper liquid component extracted from 10 mL of venous blood by centrifugation; Concentrated growth factor (CGF) compressed exudate, which is the exudate of mid-layer solid CGF obtained by centrifugation and compression molding of 10 mL of venous blood.

[0008] Preferably, the bone substitute material is a powder material selected from at least one of autologous bone powder, allogeneic bone powder, xenogeneic bone powder, hydroxyapatite bone powder, or tricalcium phosphate bone powder.

[0009] Preferably, the ends of the two clamp handles furthest from the working end are provided with circular gripping rings, and the locking structure is located between the circular gripping rings and the hinge.

[0010] Preferably, the locking structure is a toothed strip provided on the near-circular gripping rings of the two clamp handles that mesh with each other, used to fix the pressurized state.

[0011] Preferably, the adhesive bone filler further comprises an absorbable barrier membrane (the absorbable barrier membrane is derived from pigs, cattle, etc., and its function is to cover the bone graft material and prevent epithelial cells from growing into the bone graft area during the osteogenic process), and the absorbable barrier membrane covers the surface of the adhesive bone filler to form an integrated structure.

[0012] Preferably, the absorbable barrier membrane is further composited with a concentrated growth factor membrane, forming a three-layer integrated structure consisting of an adhesive bone filler, an absorbable barrier membrane, and a concentrated growth factor membrane (CGF membrane) from the inside out.

[0013] Preferably, the configuration of the first working groove is adapted to the anatomical morphology of the labial bone graft area of ​​the mandibular anterior teeth, with a groove depth of 2–4 mm, a groove length of 28–33 mm, and a groove width of 13–18 mm.

[0014] Preferably, the configuration of the second working groove is adapted to the anatomical morphology of the lingual bone graft area of ​​the mandibular anterior teeth, with a groove depth of 3–5 mm, a groove length of 25–30 mm, and a groove width of 13–18 mm.

[0015] Preferably, the working groove surfaces of the lip-side adhesive bone forming structure and the tongue-side forming structure are further provided with an anti-stick coating.

[0016] Preferably, the labial adhesive bone molding structure and the lingual molding structure are made of medical-grade stainless steel or titanium alloy, and are resistant to high-temperature and high-pressure sterilization.

[0017] The method for preparing the viscous bone filler includes the following steps: Mixing bone substitutes with platelet derivatives forms a viscous bone mixture; Fill the mixture into the working slot of the molding pliers; Close the clamps and apply pressure to lock them in place. Let them stand for 1–3 minutes to shape. The platelet derivatives are obtained through centrifuged venous blood and specifically include: Venous blood is dispensed into uncoated plastic blood collection tubes and coated glass blood collection tubes; Autologous fibrin glue (AFG) and concentrated growth factor (CGF) were separated by variable speed centrifugation. CGF is compressed to collect exudate, which, together with AFG, acts as a binder.

[0018] (III) Beneficial Effects Compared with the prior art, the present invention has the following advantages: The three-dimensional viscous bone shaping clamp of this invention solves three major pain points in traditional PAOO surgery by improving the physical properties of bone graft materials (viscous curing) and pre-setting the shape (anatomically adapted groove type), which significantly improves the accuracy and long-term stability of bone augmentation. Attached Figure Description

[0019] 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 schematic diagram of the lip-side adhesive bone forming structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the tongue-shaped molding structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the lip-side adhesive bone forming structure of the present invention.

[0022] Figure 4 This is a schematic diagram of the tongue-side molding structure of the present invention.

[0023] Figure 5 This is a frontal cross-sectional view of the first arc-shaped concave block of the present invention.

[0024] Figure 6This is a frontal cross-sectional view of the second arc-shaped convex block of the present invention.

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of the adhesive bone filler of the present invention. Figure 8 This is a schematic diagram of the sagittal CBCT image of the left mandibular incisor before surgery in patients with skeletal class III disease in Examples 1 and 2.

[0026] Figure 9 This is a schematic diagram of the sagittal CBCT image of the left mandibular lateral incisor immediately after surgery in patients with skeletal Class III disease in Examples 1 and 2.

[0027] Figure 10 This is a schematic diagram of the sagittal CBCT image of the left mandibular lateral incisor 6 months after surgery in patients with skeletal class III disease in Examples 1 and 2.

[0028] Figure 11 This is a schematic diagram of the sagittal CBCT image of the left mandibular lateral incisor before the operation.

[0029] Figure 12 This is a schematic diagram of a sagittal CBCT image of the left mandibular lateral incisor immediately after the comparative surgery. Figure 13 This is a schematic diagram of a sagittal CBCT image of the left mandibular lateral incisor six months after a comparative surgery.

[0030] The labels in the attached diagram are as follows: 1-clamp handle, 2-locking structure, 3-hinge, 4-screw, A-lip-side adhesive bone molding structure, A1-first arc-shaped concave block, A2-first arc-shaped convex block, A3-first working groove, B-tongue-side molding structure, B1-second arc-shaped convex block, B2-second arc-shaped concave block, B3-second working groove, 5-adhesive bone filler. Detailed Implementation

[0031] In this technical solution: To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] This invention is achieved through the following technical solution: This invention proposes a three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration, comprising two handles, a hinge, and a locking structure located at the end of the handles. The two handles are cross-connected by the hinge, and the working ends of the two handles are equipped with detachable labial adhesive bone shaping structures (see reference). Figure 1 (as shown) or tongue-shaped structure (refer to) Figure 2 (As shown) (The screw is detachably fixed to the working end of the pliers handle, allowing for quick replacement of the working end); The labial adhesive bone-forming structure (refer to) Figure 3 (As shown) includes: The first arc-shaped concave block is fixed to the end of a pliers handle by a screw; The first arc-shaped convex block is fixed to the end of another clamp handle by screws. Its outer convex surface is inserted into the arc surface of the first arc-shaped concave block, and a first working groove is provided on the side close to the first arc-shaped convex block. The tongue-side molding structure (refer to) Figure 4 (As shown) includes: The second arc-shaped concave block is fixed to the end of a pliers handle by a screw; The second arc-shaped convex block is fixed to the end of another clamp handle by screws. Its outer convex surface is inserted into the arc surface of the second arc-shaped concave block, and a second working groove is provided on the side near the second arc-shaped concave block. The configurations of the first and second working slots are pre-designed based on the anatomical data of the mandibular anterior region and the bone graft volume requirements, and are used to compress and form a viscous bone block that adapts to the three-dimensional morphology of the labial or lingual bone defect area. The size data of the first and second working slots are optimized and determined based on the statistical mean of the mandibular anterior region bone defect morphology, orthodontic tooth movement range and osteogenic rate data of Chinese patients with skeletal Class II and Class III malocclusion. The groove contour of the first working groove is adapted to the physiological curvature of the labial bone plate of the mandibular anterior teeth. Its groove depth gradually increases from the alveolar ridge crest to the root apex, and the groove length covers the cementoenamel junction to the root apex area. The groove contour of the second working groove is adapted to the physiological curvature of the lingual bone plate of the mandibular anterior teeth. Its groove depth gradually increases from the alveolar ridge crest to the root apex, and the groove length covers the cementoenamel junction to the root apex area. The first and second working grooves are filled with a viscous bone filler; the viscous bone filler is composed of the following components: Bone replacement materials (0.5–1.0 g), platelet derivatives; The platelet derivatives include autologous fibrin glue (AFG), the upper liquid component extracted from 10 mL of venous blood by centrifugation; Concentrated growth factor (CGF) compressed exudate, which is the exudate of mid-layer solid CGF obtained by centrifugation and compression molding of 10 mL of venous blood.

[0033] The bone substitute material is a powder material selected from at least one of autologous bone powder, allogeneic bone powder, xenogeneic bone powder, hydroxyapatite bone powder, or tricalcium phosphate bone powder.

[0034] The two clamp handles are provided with circular grip rings at the ends away from the working end, and the locking structure is located between the circular grip rings and the hinge.

[0035] The locking structure is a toothed strip located on the two pliers, where the nearly circular gripping rings mesh with each other, used to fix the pressurized state.

[0036] Among them, reference Figure 7 As shown, the adhesive bone filler further includes an absorbable barrier membrane (the absorbable barrier membrane is derived from sources such as pigs and cattle, and its function is to cover the bone graft material and prevent epithelial cells from growing into the bone graft area during the osteogenic process). The absorbable barrier membrane covers the surface of the adhesive bone filler to form an integrated structure.

[0037] Among them, reference Figure 7 As shown, the absorbable barrier membrane is further composited with a concentrated growth factor membrane, forming a three-layer integrated structure consisting of an adhesive bone filler, an absorbable barrier membrane, and a concentrated growth factor membrane (CGF membrane) from the inside out.

[0038] The first working groove is configured to match the anatomical shape of the labial bone graft area of ​​the mandibular anterior teeth, with a groove depth of 2–4 mm, a groove length of 28–33 mm, and a groove width of 13–18 mm.

[0039] The second working groove is configured to match the anatomical shape of the lingual bone graft area of ​​the mandibular anterior teeth, with a groove depth of 3–5 mm, a groove length of 25–30 mm, and a groove width of 13–18 mm.

[0040] The working groove surfaces of the labial adhesive bone forming structure and the lingual forming structure are also provided with an anti-stick coating (see reference). Figure 5 , 6 (As shown).

[0041] The labial adhesive bone-forming structure and the lingual bone-forming structure are made of medical-grade stainless steel or titanium alloy and are resistant to high-temperature and high-pressure sterilization.

[0042] The method for preparing the viscous bone filler includes the following steps: Mixing bone substitutes with platelet derivatives forms a viscous bone mixture; Fill the mixture into the working slot of the molding pliers; Close the clamps and apply pressure to lock them in place. Let them stand for 1–3 minutes to shape. The platelet derivatives are obtained through centrifuged venous blood and specifically include: Venous blood is dispensed into uncoated plastic blood collection tubes and coated glass blood collection tubes; Autologous fibrin glue (AFG) and concentrated growth factor (CGF) were separated by variable speed centrifugation. CGF is compressed to collect exudate, which, together with AFG, acts as a binder.

[0043] Example 1: Preparation and surgical application of labial adhesive bone blocks: Case selection: A skeletal class III patient with thin labial and lingual bone plates in the mandibular anterior region (<0.5 mm) and multiple bone dehiscences; Figure 8 Sagittal CBCT image of the left lower lateral incisor (the yellow dotted line in the image indicates the cementoenamel junction). Step 1: Preparation of the viscous bone mixture: Draw 20 mL of venous blood from the patient's forearm: 10mL of uncoated polymer plastic vacuum blood collection tube (white cap) was injected. 10mL of coated glass vacuum blood collection tube (red cap) is injected. Centrifugation (TD4 oral platelet-rich plasma centrifuge, MF-200, Silfradent, Italy): CGF-S1 variable speed program: centrifugation radius 5cm, 2600 r / min for 3 minutes; A-PRF-S2 constant speed program: centrifugation radius 5cm, 2450 r / min for 10 minutes; Extracted components: White cap tube: Extraction of the upper liquid autologous fibrin glue (AFG); Red cap tube: Extraction of concentrated growth factors (CGF) in the middle layer solid layer, and collection of exudate (CGF compressed exudate) after membrane pressing. Mixed viscous bone filler: Take 0.8g of powdered heterologous bone meal (Bio-Oss, Geistlich, Switzerland); Add 5 mL of AFG and 1 mL of CGF compressed exudate, and stir until a uniform paste is formed; Step 2: Operating the forming clamps Choose a labial adhesive bone-forming structure (size: groove depth 3mm / groove length 30mm / groove width 15mm, to match the physiological curvature of the labial side of the mandibular anterior teeth). The adhesive bone mixture is filled into the working groove (the groove surface contains a medical-grade polytetrafluoroethylene anti-stick coating); Close the clamp handle, apply pressure through the toothed locking structure, and let stand for 2 minutes to form a solid, viscous bone block; Step 3: PAOO procedure (periodontal-assisted orthodontic cortical osteotomy); Under local anesthesia, a modified papillary-preserving incision was made, and a full-thickness flap was flipped to expose the labial bone plate. Ultrasonic bone scalpel was used to make an incision in the labial cortex; Pre-formed labial adhesive bone block was implanted (covering the cementoenamel junction to the periapical region). Figure 9 (Right arrow) Covered with an absorbable barrier membrane (Bio-Gide, Geistlich, Switzerland); Gingival flap tension-reducing suture (6-0 non-absorbable suture); Results: Six months post-surgery, CBCT showed that the crest of the newly formed alveolar bone was located 1 mm apical to the cementoenamel junction on the labial side. Figure 10 (Right arrow), the bone thickness at the cementoenamel junction, 3 mm apical, reaches 2.3 mm ( Figure 10 (Right arrow) The bone block is stable and has no collapse.

[0044] Example 2: Lingual composite periosteum integrated bone graft: Step 1: Preparation of composite bone graft: A viscous bone mixture (1.0 g bone powder + 1 mL AFG + 1 mL CGF exudate) was prepared according to the method in Example 1. Select the tongue-side molding structure (size: groove depth 4mm / groove length 28mm / groove width 16mm, to match the curvature of the tongue-side bone plate). Layered filling within the working slot: Bottom layer: adhesive bone mixture; Middle layer: Absorbable barrier membrane (porcine collagen membrane); Surface layer: CGF membrane (made from solid CGF extracted from red blood collection tubes and pressed into a membrane). Close the clamp handle and apply pressure for 3 minutes to form a three-layer integrated bone graft; Step 2: Surgical Application Simultaneous incision of the labial and lingual cortical bone of the mandibular anterior teeth; A composite bone graft was implanted into the lingual bone defect area (CGF membrane facing the soft tissue surface). No additional barrier membrane is needed; tension-reducing gingival flaps can be directly sutured. A composite bone graft (CGF membrane facing the soft tissue side) was implanted into the lingual bone defect area. Figure 9 (Left arrow) No additional barrier membrane is needed; tension-reducing gingival flaps can be directly sutured. Results: Six months post-surgery, CBCT showed that the crest of the newly formed alveolar bone was located 2 mm apical to the cementoenamel junction on the labial side. Figure 10 (Left-pointing arrow), the bone thickness at the cementoenamel junction, 3 mm apical, reaches 2.3 mm ( Figure 10 (Left-pointing arrow) The bone fragment is stable and shows no collapse; Advantages: The integrated structure prevents bone meal displacement; CGF membrane promotes soft tissue healing (the gingival flap is completely closed 2 weeks post-surgery). The operation time is reduced by 40% (by eliminating the need for the intraoperative barrier membrane trimming step).

[0045] Comparative example: Traditional bone replacement surgery using powdered bone materials; Case selection: Skeletal Class III patients with thin labial and lingual bone plates in the mandibular anterior region (<0.5mm) and multiple bone dehiscences ( Figure 8 Sagittal CBCT image of the left lower lateral incisor (the yellow dotted line in the image indicates the cementoenamel junction). Surgical steps Bone graft material preparation: Direct use of 1.0g of powdered xenogeneic bone replacement material (Bio-Oss); No adhesive added (no AFG or CGF used) PAOO surgical procedure: After flapping, the cortical bone was cut open on the labial and lingual sides using an ultrasonic osteotome. Handmade bone meal sculpting: Use tweezers to pick up bone powder and apply it layer by layer to the bone defect area; The shape is repeatedly adjusted to cover the cementoenamel junction to the apical area (takes about 15 minutes). Cover with an absorbable barrier membrane (Bio-Gide) and trim the edges; Gingival flap tension-reducing suture (6-0 non-absorbable suture).

[0046] Results: Six months post-surgery, CBCT showed that the crest of the newly formed alveolar bone was located 5 mm apical to the cementoenamel junction on the labial side. Figure 13 (Right arrow), 6mm apical to the cementoenamel junction on the lingual side ( Figure 13 (Left-pointing arrow) The bone thickness at the cementoenamel junction on the labial and lingual sides is less than 0.5 mm at 3 mm apical distance. Figure 13 (Left and right arrows) The bone fragments clearly collapse towards the root.

[0047] The table below compares the intraoperative and postoperative problems of the comparative examples and Examples 1-2:

[0048] Summary of the comparative analysis of the above key issues: 1. Bone meal collapse mechanism Comparative example: Loose bone meal lacks cohesive force and shifts towards the root / floor of the mouth under the influence of soft tissue tension and gravity. Figure 12 The left and right arrows indicate the collapse of the bone powder on the lip and tongue sides. Example: AFG+CGF exudate forms a bio-bonding network, and the compressive strength is increased by 3 times after curing (test value: traditional bone powder 0.5MPa vs. adhesive bone block 1.8MPa). 2. Alveolar ridge crest reconstruction failure Comparative example: Bone grafts at the CEJ site were lost first due to lack of support, resulting in insufficient bone gain in that area (bone thickness less than 0.5 mm 6 months post-surgery). Figure 13); Example: The molding forceps working groove is pre-set with a CEJ thickened area (lip groove depth 2.5mm) to ensure bone volume at key sites; 3. Risks of a second surgery Comparative study: 18% of cases required secondary bone grafting due to insufficient bone volume; Example: Improved precision in bone grafting reduces the rate of secondary surgery to less than 1%.

[0049] Figure 9 Note that immediately after surgery, the shaped bone block fits tightly against the bone surface; Figure 10 Note: 6 months after surgery with this invention: the bone fragment position is stable, and the bone plate from CEJ to the apical region continuously thickens (white arrow indicates a 2.3mm homogeneous bone layer). 6 months after surgery with traditional bone powder: the bone powder is significantly displaced towards the root (white arrow), and the bone defect at CEJ is not repaired. Figure 12 Note: Immediately after traditional bone granulation surgery, the shape of the bone granulation on the labial and lingual sides shifts radially. Figure 13 Note: 6 months after traditional bone grafting surgery: the bone graft has shifted significantly towards the root (white arrow), and the bone defect within 5mm of the root of CEJ on the labial and lingual sides has not been repaired.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or devices recited in the apparatus claims may also be implemented by a single unit or device in software or hardware. The terms "first," "second," etc., are used to indicate names and do not indicate any particular order.

[0051] Finally, it should be noted that the above examples are merely specific embodiments of the present invention. Obviously, the present invention is not limited to the above examples and many variations are possible. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this invention should be considered within the scope of protection of this invention.

Claims

1. A three-dimensional adhesive bone-forming forceps for periodontal tissue regeneration, comprising two handles (1), a hinge (3), and a locking structure (2) disposed at the end of the handles, wherein the two handles (1) are cross-connected by the hinge (3), characterized in that: The working ends of the two clamp handles (1) are equipped with a detachable lip-side adhesive bone molding structure (A) or a tongue-side molding structure (B). The labial adhesive bone-forming structure (A) includes: The first arc-shaped concave block (A1) is fixed to the end of a pliers handle (1) by a screw (4); The first arc-shaped convex block (A2) is fixed to the end of another clamp handle (1) by screw (4). Its outer convex surface is inserted into the arc surface of the first arc-shaped concave block (A1), and a first working groove (A3) is provided on the side close to the first arc-shaped convex block (A2). The tongue-shaped structure (B) includes: The second arc-shaped concave block (B2) is fixed to the end of a pliers handle (1) by a screw (4); The second arc-shaped convex block (B1) is fixed to the end of another clamp handle (1) by screw (4). Its outer convex surface is inserted into the arc surface of the second arc-shaped concave block (B2), and a second working groove (B3) is provided on the side close to the second arc-shaped concave block (B2). The configurations of the first working slot (A3) and the second working slot (B3) are pre-designed based on the anatomical data of the mandibular anterior region and the bone graft volume requirements; The first working groove (A3) and the second working groove (B3) are filled with viscous bone filler (5); the viscous bone filler (5) is composed of the following components: Bone replacement materials, platelet derivatives; The platelet derivatives include autologous fibrin glue and concentrated growth factor compressed exudate.

2. The three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration according to claim 1, characterized in that: The bone substitute material is a powder material selected from at least one of autologous bone powder, allogeneic bone powder, xenogeneic bone powder, hydroxyapatite bone powder, or tricalcium phosphate bone powder.

3. The three-dimensional adhesive bone-forming forceps for periodontal tissue regeneration according to claim 1, characterized in that: The two clamp handles (1) are provided with a circular grip ring at the end away from the working end, and the locking structure (2) is located between the circular grip ring and the hinge.

4. The three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration according to claim 3, characterized in that: The locking structure (2) is a toothed strip located on the two pliers, where the nearly circular gripping rings mesh with each other, and is used to fix the pressurized state.

5. The three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration according to claim 1, characterized in that: The adhesive bone filler (5) further comprises an absorbable barrier membrane, which covers the surface of the adhesive bone filler to form an integrated structure.

6. The three-dimensional adhesive bone-forming forceps for periodontal tissue regeneration according to claim 5, characterized in that: The absorbable barrier membrane is further composited with a concentrated growth factor membrane, forming a three-layer integrated structure consisting of viscous bone filler, absorbable barrier membrane, and concentrated growth factor membrane from the inside out.

7. The three-dimensional adhesive bone-forming forceps for periodontal tissue regeneration according to claim 1, characterized in that: The first working slot (A3) is configured to fit the anatomical shape of the labial bone graft area of ​​the mandibular anterior teeth, with a slot depth of 2–4 mm, a slot length of 28–33 mm, and a slot width of 13–18 mm.

8. The three-dimensional adhesive bone-forming forceps for periodontal tissue regeneration according to claim 1, characterized in that: The second working slot (B3) is configured to fit the anatomical shape of the lingual bone graft area of ​​the mandibular anterior teeth. Its slot depth is 3–5 mm, slot length is 25–30 mm, and slot width is 13–18 mm.

9. The three-dimensional adhesive bone shaping forceps for periodontal tissue regeneration according to claim 1, characterized in that: The surfaces of the first working groove (A3) and the second working groove (B3) are also provided with an anti-stick coating.

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