Titanium mesh reverse in-place guide plate and barrier membrane integrated forming and fixing method

Abstract

The invention discloses a titanium mesh reverse in-place guide plate and barrier membrane integrated forming and fixing method, and relates to the technical field of tooth treatment, and the method comprises the following steps: S1, data acquisition; s2, designing a titanium mesh; s3, a guide plate design stage and a barrier film template design stage; and S4, an intraoperative implementation stage: determining the covering range of the barrier membrane based on the titanium mesh designed before the operation, pre-cutting and forming, after cutting is completed, covering the corresponding side of the titanium mesh with the cut barrier membrane, and performing titanium mesh-barrier membrane integrated pre-fixation in the near, far, middle and root square areas of the barrier membrane and the titanium mesh through absorbable sutures. The titanium mesh can be accurately positioned, the operation process is simplified, the operation time is saved, and accurate covering of the barrier membrane is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dental treatment, more particularly to the technical field of a titanium mesh reverse positioning guide plate and barrier membrane integrated forming and fixing method. BACKGROUND

[0002] Current 3D printing personalized titanium mesh technology has been widely used in complex alveolar bone defect bone augmentation treatment. It realizes the precise matching of titanium mesh shape and bone defect shape through computer aided design, significantly improves the bone space stability and shortens the operation time. It is suggested to cover barrier membrane and membrane-shaped platelet concentrate on the titanium mesh to promote tissue healing and buffer the stress of the titanium mesh, thereby reducing the risk of wound cracking, titanium mesh exposure and infection. However, there are still two technical bottlenecks in clinical practice: First, the intraoperative positioning of the titanium mesh depends on the experience of the operator, and the smooth bone surface is easy to cause displacement. Literature reports that the preoperative design position of the personalized titanium mesh may deviate from the actual positioning position by up to 3.4mm, affecting the predictability of bone augmentation effect; Second, the absorbable barrier membrane has certain technical sensitivity during intraoperative cutting and fixing. The size and shape of the barrier membrane need to be cut and adjusted through clinical experience evaluation during the operation, which not only consumes time, but also leads to insufficient or waste of membrane area due to judgment errors, and the folding and displacement of the barrier membrane will lose the protection of the titanium mesh.

[0003] Although the existing improved technology such as "titanium mesh positioning module" improves the positioning accuracy, it does not solve the problem of barrier membrane stability. Therefore, it is necessary to develop a new technology that realizes the precise positioning of the titanium mesh and the integration of the barrier membrane-titanium mesh fixing. SUMMARY

[0004] The purpose of the present application is to solve the above technical problems. The present application provides a titanium mesh reverse positioning guide plate and barrier membrane integrated forming and fixing method. The titanium mesh can be precisely positioned, the operation process is simplified, the operation time is saved, and the barrier membrane is precisely covered.

[0005] In order to achieve the above purpose, the present application specifically adopts the following technical solutions: The present application provides a titanium mesh reverse positioning guide plate and barrier membrane integrated forming and fixing method, comprising the following steps: S1, data acquisition stage: obtain three-dimensional data of the dentition through intraoral scanning, and combine CBCT to reconstruct the anatomical morphology of the bone defect area; S2, titanium mesh design stage: design the bone augmentation range according to the perimandibular bone defect, and ensure that the buccal edge of the titanium mesh completely covers the bone defect area and extends to the surrounding bone surface; S3, guide plate design stage: titanium mesh reverse positioning guide plate is divided into two parts, dental arch guide plate and titanium mesh reverse positioning accessory. The dental arch guide plate needs to fit the tooth surface. The coronal side of the dental arch guide plate is a anti-rotation block, which is used as an anti-rotation bolt for the reverse positioning of the titanium mesh accessory; S4, barrier membrane template design stage: according to the titanium mesh printed before sterilization, the barrier membrane template of a certain size is cut and spliced to ensure that the edge of the barrier membrane template exceeds the edge of the titanium mesh. The barrier membrane template is sterilized for quick use during the operation; S5, intraoperative implementation stage: based on the titanium mesh designed preoperatively, the coverage range of the barrier membrane is determined and pre-cut into shape. After cutting, the cut barrier membrane is covered on the corresponding side of the titanium mesh, and the titanium mesh-barrier membrane integration is pre-fixed through absorbable sutures in the mesial and distal regions of the barrier membrane and the titanium mesh.

[0006] In one embodiment, in step S3, the other end of the titanium mesh reverse positioning accessory is a coaxial double-diameter cylinder. The small-diameter cylinder of the coaxial double-diameter cylinder passes through the titanium mesh positioning hole, and the large-diameter cylinder of the coaxial double-diameter cylinder limits the dislocation of the titanium mesh positioning hole. The axial consistency of the titanium mesh positioning hole, the anti-rotation block, and the coaxial double-diameter cylinder ensures that the titanium mesh reverse positioning accessory will not interfere with the position of the titanium mesh when removed.

[0007] In one embodiment, in step S4, heavy silicone rubber is used as the barrier membrane template material, and the following process is used to realize the shape replication and positioning guidance of the barrier membrane: S41, material shaping: after mixing the two-component heavy silicone rubber thoroughly, press it into a homogeneous sheet with a thickness of 2mm; S42, shape modification: cover the silicone rubber sheet on the outer surface of the titanium mesh, and the edge of the silicone rubber sheet exceeds the contour line of the titanium mesh by 2mm; the silicone rubber sheet is 1mm away from the adjacent teeth; S43, suture hole preparation: according to the suture site for integrated fixation of the barrier membrane and the titanium mesh during the operation, reserve multiple template guide holes with a diameter of 1.0mm on the silicone rubber sheet, and the positions of the template guide holes correspond to the buccal and distal, buccal and mesial, palatal and distal, and palatal and mesial of the titanium mesh; S44, curing: flatten and place the silicone rubber sheet after removing it from the titanium mesh. After the silicone rubber sheet is completely cured and shaped, the silicone rubber template is obtained.

[0008] In one embodiment, in step S5, intraoperative integration fixation: place the silicone rubber template on the barrier membrane to accurately cut it. Mark the suture points on the barrier membrane according to the template guide holes of the silicone rubber template, and perform through suture at the corresponding positions of the titanium mesh to integrate and pre-fix the barrier membrane and the titanium mesh.

[0009] In one embodiment, after the dentition guide plate is in place, the titanium mesh is precisely attached to the buccal bone surface by the reverse positioning accessory of the titanium mesh; after the bone nail channel is prepared, bone grafting is performed in the recipient area; the dentition guide plate and the reverse positioning accessory are repositioned, the position of the titanium mesh is confirmed, the bone nail is screwed to fix the titanium mesh, and finally the dentition guide plate and the reverse positioning accessory of the titanium mesh are removed to complete the operation.

[0010] In one embodiment, the top of the titanium mesh is provided with a titanium mesh positioning hole with a diameter of 1.5 mm as a reference for positioning the guide plate accessory.

[0011] In one embodiment, the dentition guide plate includes a guide plate attached to the bilateral dental surfaces of the edentulous area, the guide plate avoids the titanium mesh in the edentulous area, and the two guide plates are connected by a connecting rod located on the lingual side; the titanium mesh positioning hole is located in the edentulous area, and the reverse positioning accessory is located in the edentulous area and cooperates with the titanium mesh positioning hole provided at the top of the contact ridge of the titanium mesh; the two guide plates are a first dentition guide plate and a second dentition guide plate, and the first dentition guide plate and the second dentition guide plate are provided with anti-rotation blocks at one end close to the edentulous area. One end of the reverse positioning accessory is provided with an anti-rotation pin, and the other end of the reverse positioning accessory is provided with a coaxial double-diameter cylinder body cooperating with the titanium mesh positioning hole; the anti-rotation pin is connected with the dentition guide plate by means of the clamping force of the anti-rotation pin inserted into the anti-rotation block; the square of the anti-rotation pin limits the rotation of the reverse positioning accessory; the coaxial double-diameter cylinder body cooperates with the titanium mesh positioning hole. The first dentition guide plate and the second dentition guide plate are both arc-shaped plates, and the inner sides of the first dentition guide plate and the second dentition guide plate are connected by at least two connecting rods.

[0012] In one embodiment, the coaxial double-diameter cylinder body includes a small-diameter cylinder body and a large-diameter cylinder body, the small-diameter cylinder body is inserted into the titanium mesh positioning hole, and the large-diameter cylinder body is connected with the reverse positioning accessory.

[0013] In one embodiment, the diameter of the small-diameter cylinder body is 0.1 mm smaller than the diameter of the titanium mesh positioning hole, and the diameter of the large-diameter cylinder body is larger than the diameter of the titanium mesh positioning hole; after the reverse positioning accessory is positioned, the distance between the large-diameter cylinder body and the adjacent teeth is greater than 1 mm.

[0014] The beneficial effects of the present application are as follows: 1. The buccal side and palatal side barrier membrane templates are preoperatively depicted and cut according to the morphology of the buccal side and palatal side of the titanium mesh, the size of the barrier membrane is determined, the buccal side and palatal side barrier membranes are respectively covered and exceed the edge of the titanium mesh by 2 mm, the intraoperative processing time of the barrier membrane is significantly shortened, the material waste is reduced, and the barrier effect is guaranteed.

[0015] 2, The prerequisite for the reverse positioning guide plate to function is to design a circular positioning hole near the titanium mesh close to the ridge top. One end of the reverse positioning accessory is designed as a rotation prevention pin, which is connected with the dentition guide plate by clamping force. The square design of the rotation prevention pin limits the rotation of the reverse positioning accessory. The other end of the reverse positioning accessory is a coaxial double-diameter cylinder, which is a key structure to confirm the position of the titanium mesh.

[0016] 3, The other end of the reverse positioning accessory of the titanium mesh is a coaxial double-diameter cylinder. The small-diameter cylinder of the coaxial double-diameter cylinder passes through the positioning hole of the titanium mesh, and the large-diameter cylinder of the coaxial double-diameter cylinder limits the coronal dislocation of the titanium mesh. The axial consistency of the positioning hole of the titanium mesh, the rotation prevention pin and the coaxial double-diameter cylinder ensures that the titanium mesh reverse positioning accessory will not interfere with the position of the titanium mesh when it is removed. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0018] Figure 1 is a technical roadmap of the titanium mesh reverse positioning guide plate and the barrier membrane integrated forming and fixing method; Figure 2 is a flowchart of the barrier membrane integrated forming and fixing method; Figure 3 is a model operation schematic diagram of the barrier membrane integrated forming and fixing method; Figure 4 is a front view of the titanium mesh and the titanium mesh reverse positioning guide plate; Figure 5 is a top view of the titanium mesh and the titanium mesh reverse positioning guide plate; Figure 6 is a three-dimensional view of Figure 3 ; Reference signs: 1, dentition guide plate; 2, reverse positioning accessory; 3, rotation prevention pin; 4, coaxial double-diameter cylinder; 5, titanium mesh buccal side; 6, palatal side. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and technical effects of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0023] Example 1 like Figures 1 to 3 As shown, this embodiment provides a method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier film, including the following steps: S1. Data Acquisition Stage: Three-dimensional data of the dentition are acquired through intraoral scanning, and the anatomical morphology of the bone defect area is reconstructed by CBCT. S2. Titanium Mesh Design Stage: The bone augmentation range is designed according to the bone defect around the implant, ensuring that the buccal edge of the titanium mesh completely covers the bone defect area and extends to the surrounding bone surface; 1.5mm diameter positioning holes are set on the top of the titanium mesh ridge as a reference for the positioning of the guide plate accessory; S3. Guide Plate Design Stage: The titanium mesh reverse positioning guide plate consists of two parts: dental guide plate 1 and titanium mesh reverse positioning accessory 2. Dental guide plate 1 needs to fit against the tooth surface. The coronal side of dental guide plate 1 is an anti-rotation block, which serves as the positioning basis for the anti-rotation pin 3 at one end of titanium mesh reverse positioning accessory 2. The other end of titanium mesh reverse positioning accessory 2 is a coaxial double-diameter cylinder 4. The smaller diameter cylinder of the coaxial double-diameter cylinder 4 passes through the titanium mesh positioning hole, and the larger diameter cylinder of the coaxial double-diameter cylinder 4 restricts the titanium mesh positioning hole from dislodging. The axial alignment of the titanium mesh positioning hole, the anti-rotation block, and the coaxial double-diameter cylinder 4 ensures that the titanium mesh position will not be disturbed when titanium mesh reverse positioning accessory 2 is removed.

[0024] S4, barrier membrane template design stage: according to the printed titanium mesh before sterilization, the set size of the barrier membrane template is cut and spliced, and the edge of the barrier membrane template is ensured to exceed the edge of the titanium mesh. The barrier membrane template is sterilized for rapid use in surgery; heavy silicone rubber is used as the barrier membrane template material, and the shape of the barrier membrane is copied and positioned by the following process: S41, material shaping: after mixing the two-component heavy silicone rubber, press it into a homogeneous sheet with a thickness of 2mm; S42, shape modification: cover the silicone rubber sheet on the outer surface of the titanium mesh, and the edge of the silicone rubber sheet exceeds the titanium mesh contour line by 2mm; the silicone rubber sheet is 1mm away from the adjacent teeth; S43, suture hole preparation: according to the suture site of the integrated barrier membrane and titanium mesh in the operation, reserve multiple template guide holes with a diameter of 1.0mm on the silicone rubber sheet, and the template guide hole position corresponds to the buccal side, buccal side near and far, palatal side, and palatal side near and far of the titanium mesh; S44, curing: flatten and place the silicone rubber sheet after removing it from the titanium mesh, and get the silicone rubber template after the silicone rubber sheet is completely cured and shaped.

[0025] S5, intraoperative integration: place the silicone rubber template on the barrier membrane to accurately cut it, mark the suture points on the barrier membrane according to the template guide holes of the silicone rubber template, and implement through suture at the corresponding position of the titanium mesh to integrate and fix the barrier membrane and the titanium mesh.

[0026] After the dental guide plate 1 is in place, the titanium mesh is guided to accurately fit the buccal bone surface through the reverse positioning accessory 2; after the bone screw channel is prepared, the bone graft is performed in the recipient area; the dental guide plate 1 and the reverse positioning accessory 2 are repositioned, the position of the titanium mesh is confirmed, the bone screw is screwed to fix the titanium mesh, and finally the dental guide plate 1 and the titanium mesh reverse positioning accessory 2 are removed to complete the operation.

[0027] Example 2 As shown in Figures 4 to 6 The present embodiment provides a titanium mesh reverse positioning guide plate which cooperates with the titanium mesh located in the edentulous area, comprising a dental guide plate 1 and a reverse positioning accessory 2; The dental guide plate 1 comprises a guide plate that fits both sides of the edentulous area, and the guide plate avoids the titanium mesh in the edentulous area. The two guide plates are connected by a connecting rod located on the lingual side. The titanium mesh positioning hole is located in the edentulous area, and the reverse positioning accessory 2 is located in the edentulous area and cooperates with the titanium mesh positioning hole provided at the top of the contact ridge of the titanium mesh. The two guide plates are respectively a first dental guide plate 1 and a second dental guide plate 1, and each end of the first dental guide plate 1 and the second dental guide plate 1 near the edentulous area is provided with a anti-rotation block; One end of the reverse positioning accessory 2 is provided with an anti-rotation plug 3, and the other end of the reverse positioning accessory 2 is provided with a coaxial double-diameter cylinder 4 matched with the titanium mesh positioning hole. The anti-rotation plug 3 is connected with the dental arch guide plate 1 by means of the clamping force of the anti-rotation block plug. The square of the anti-rotation plug 3 limits the rotation of the reverse positioning accessory 2; the coaxial double-diameter cylinder 4 is matched with the titanium mesh positioning hole. The first dental arch guide plate 1 and the second dental arch guide plate 1 are both arc-shaped plates, and the inner sides of the first dental arch guide plate 1 and the second dental arch guide plate 1 are connected by at least two connecting rods.

[0028] The anti-rotation plug 3 is a square clamping groove, and the anti-rotation block is a square tenon that is adapted in shape to the square clamping groove.

[0029] The coaxial double-diameter cylinder 4 includes a small-diameter cylinder and a large-diameter cylinder. The small-diameter cylinder is inserted into the titanium mesh positioning hole, and the large-diameter cylinder is connected with the reverse positioning accessory 2.

[0030] The diameter of the small-diameter cylinder is 0.1 mm smaller than the diameter of the titanium mesh positioning hole, and the diameter of the large-diameter cylinder is larger than the diameter of the titanium mesh positioning hole. After the reverse positioning accessory 2 is positioned, the distance between the large-diameter cylinder and the adjacent tooth is greater than 1 mm.

[0031] When the diameter Φ of the titanium mesh positioning hole is 1.5 mm, the diameter Φ of the small-diameter cylinder is 1.4 mm, and the diameter of the large-diameter cylinder is designed to be Φ 3 mm.

[0032] Specifically, the size of the coaxial double-diameter cylinder 4 is related to the titanium mesh positioning hole. When the diameter Φ of the titanium mesh positioning hole is 1.5 mm, the diameter Φ of the small-diameter cylinder that contacts the top of the titanium mesh contact ridge is recommended to be 1.4 mm, i.e. there is a difference of 0.1 mm with the titanium mesh positioning hole. The diameter of the large-diameter cylinder is designed to be Φ 3 mm, which ensures a distance of more than 1 mm with the adjacent tooth after positioning, and is greater than the titanium mesh positioning hole. Through the difference between the large-diameter cylinder and the small-diameter cylinder, the large-diameter cylinder is attached to the outer surface of the titanium mesh, limiting the movement of the titanium mesh towards the crown.

[0033] The end face of the large-diameter cylinder is attached to the outer surface of the titanium mesh, which is used to limit the outward movement of the titanium mesh.

[0034] The reverse positioning accessory 2, the titanium mesh positioning hole, and the anti-rotation block are axially consistent.

Claims

1. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier film, characterized in that, Includes the following steps: S1. Data acquisition stage: Three-dimensional data of the dentition are obtained through intraoral scanning, and the anatomical morphology of the bone defect area is reconstructed by CBCT. S2, Titanium Mesh Design Stage: Design the bone augmentation range based on the peri-implant bone defect, ensuring that the buccal edge of the titanium mesh completely covers the bone defect area and extends to the surrounding bone surface; S3, Guide plate design stage: The titanium mesh reverse positioning guide plate is divided into two parts, dental guide plate (1) and titanium mesh reverse positioning accessory (2). The dental guide plate (1) needs to fit the tooth surface. The crown of the dental guide plate (1) is an anti-rotation block, which serves as the positioning basis for the anti-rotation pin (3) at one end of the titanium mesh reverse positioning accessory (2). S4. Barrier membrane template design stage: Cut and splice the barrier membrane template of the set size according to the titanium mesh printed before sterilization, ensuring that the edge of the barrier membrane template exceeds the edge of the titanium mesh, and sterilize the barrier membrane template for use during the operation; S5. Intraoperative Implementation Stage: Based on the preoperatively designed titanium mesh, the coverage area of ​​the barrier membrane is determined and pre-cut. After the cutting is completed, the cut barrier membrane is covered on the corresponding side of the titanium mesh, and the titanium mesh-barrier membrane is pre-fixed in the mesial, distal and apical regions of the barrier membrane and titanium mesh using absorbable sutures.

2. The method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 1, characterized in that, In step S3, the other end of the titanium mesh reverse positioning accessory (2) is a coaxial double-diameter cylinder (4). The small diameter cylinder of the coaxial double-diameter cylinder (4) passes through the titanium mesh positioning hole, and the large diameter cylinder of the coaxial double-diameter cylinder (4) restricts the titanium mesh positioning hole from dislodging. The axial alignment of the titanium mesh positioning hole, the anti-rotation block, and the coaxial double-diameter cylinder (4) ensures that the titanium mesh reverse positioning accessory (2) will not interfere with the position of the titanium mesh when it is removed.

3. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 1, characterized in that, In step S4, heavy-duty silicone rubber is used as the barrier membrane template material, and the morphological replication and positioning guidance of the barrier membrane are achieved through the following process: S41. Material shaping: After the two-component heavy silicone rubber is thoroughly kneaded and mixed, it is pressed into a homogeneous sheet with a thickness of 2mm. S42. Shape trimming: Cover the outer surface of the titanium mesh with a silicone rubber sheet, with the edge of the silicone rubber sheet extending 2mm beyond the outline of the titanium mesh; the silicone rubber sheet should be 1mm away from the adjacent teeth. S43. Preparation of suture holes: Based on the expected suture sites of the integrated fixation barrier membrane and titanium mesh during the operation, multiple template guide holes with a diameter of 1.0 mm are reserved on the silicone rubber sheet. The positions of the template guide holes correspond to the buccal root, buccal mesial and distal, palatal root, and palatal mesial and distal positions of the titanium mesh. S44. Curing: Remove the silicone rubber sheet from the titanium mesh, spread it out and place it flat until the silicone rubber sheet is completely cured and shaped to obtain the silicone rubber template.

4. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 3, characterized in that, In step S5, intraoperative integrated fixation: the silicone rubber template is placed on the barrier membrane and precisely cut. Suture points are marked on the barrier membrane according to the template guide holes of the silicone rubber template. Through sutures are performed at the corresponding positions of the titanium mesh to perform integrated pre-fixation of the barrier membrane and the titanium mesh.

5. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 2, characterized in that, After the dental guide plate (1) is in place, the titanium mesh is guided to precisely fit the buccal bone surface by the titanium mesh reverse placement accessory (2); after the bone screw channel is prepared, bone grafting is performed in the recipient area; the dental guide plate (1) and the reverse placement accessory (2) are repositioned, the position of the titanium mesh is confirmed, the bone screw is screwed in to fix the titanium mesh, and finally the dental guide plate (1) and the titanium mesh reverse placement accessory (2) are removed to complete the surgery.

6. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 1, characterized in that, The titanium mesh ridge top is equipped with positioning holes with a diameter of 1.5mm as a reference for positioning the guide plate accessory.

7. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 1, characterized in that, The dental guide (1) includes a guide plate that fits against the tooth surfaces on both sides of the edentulous area. The guide plate avoids the titanium mesh in the edentulous area. The two guide plates are connected by a connecting rod located on the lingual side. The titanium mesh positioning hole is located in the edentulous area. The reverse positioning accessory (2) is located in the edentulous area and matches the titanium mesh positioning hole set at the contact ridge of the titanium mesh. The two guide plates are the first dental guide plate and the second dental guide plate. The first dental guide plate and the second dental guide plate are both provided with anti-rotation blocks at the end near the edentulous area. One end of the reverse positioning accessory (2) is provided with an anti-rotation pin (3), and the other end of the reverse positioning accessory (2) is provided with a coaxial double-diameter cylinder (4) that mates with the positioning hole of the titanium mesh. The anti-rotation pin (3) is connected to the tooth guide plate (1) by means of the clamping force of the anti-rotation block. The square anti-rotation pin (3) restricts the rotation of the reverse positioning accessory (2). The coaxial double-diameter cylinder (4) mates with the positioning hole of the titanium mesh. Both the first and second dental guide plates are arc-shaped plates, and their inner sides are connected by at least two connecting rods.

8. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier film according to claim 7, characterized in that, The coaxial double-diameter cylinder (4) includes a small-diameter cylinder and a large-diameter cylinder. The small-diameter cylinder is inserted into the positioning hole of the titanium mesh, and the large-diameter cylinder is connected to the reverse positioning accessory (2).

9. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 7, characterized in that, The diameter of the small-diameter cylinder is 0.1 mm smaller than the diameter of the positioning hole in the titanium mesh, while the diameter of the large-diameter cylinder is larger than the diameter of the positioning hole in the titanium mesh.

10. A method for integrally molding and fixing a titanium mesh reverse positioning guide plate and a barrier membrane according to claim 7, characterized in that, After the reverse positioning attachment (2) is in place, the distance between the large-diameter cylinder and the adjacent tooth is greater than 1 mm.

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