CN109717971B - Bone-grafting guide plate and manufacturing method thereof - Google Patents
Bone-grafting guide plate and manufacturing method thereof Download PDFInfo
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- CN109717971B CN109717971B CN201910180443.6A CN201910180443A CN109717971B CN 109717971 B CN109717971 B CN 109717971B CN 201910180443 A CN201910180443 A CN 201910180443A CN 109717971 B CN109717971 B CN 109717971B
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- grafting guide
- plastic plates
- bone grafting
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Abstract
The invention discloses a bone grafting guide plate and a manufacturing method thereof, wherein the bone grafting guide plate comprises two plastic plates and two fixing parts, the two plastic plates are respectively used for contacting with two sides of an alveolar bone around a bone defect area and are oppositely arranged along a first direction to form a shaping interval for filling bone increment materials, the two fixing parts are positioned below the two plastic plates and are arranged at two sides of the two plastic plates at intervals along a second direction, the first direction is approximately vertical to the second direction, connecting parts respectively connected with the outer side walls of the two plastic plates are respectively formed on two sides of the fixing parts along the first direction, grooves are formed on the surfaces of the fixing parts facing the two plastic plates, and the structures of the grooves are matched with the structures of corresponding dental crowns. The invention can obtain stable osteogenic space and keep good bone increment form.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an implanted bone conduction plate and a manufacturing method thereof.
Background
Bone defects are a common problem in the field of oral implantation and can be restored by bone augmentation methods. GBR (guided bone regeneration) technology is a common bone augmentation method that promotes osteogenesis in a bone defect region by implanting a bone graft material into the bone defect region and then covering the surface with a barrier film. However, GBR technology has the following drawbacks:
1. the operation of implanting the bone graft material is completely performed by a doctor by hands, depends on the experience of the doctor, lacks objective indexes, and cannot obtain an ideal bone graft shape. Often times, it appears that too much bone graft material is implanted in the middle-lower segment of the implant, which not only is not beneficial to the success of the bone augmentation surgery, but also increases the difficulty of closure of the tension-free wound; and the implant neck often lacks sufficient bone graft material, which may affect the implant effect.
2. Bone graft materials are generally loose after being implanted, have poor compressive resistance, are easy to scatter around when stressed, and are difficult to maintain a stable osteogenic space, so that the condition of poor osteogenic effect often occurs. While it is possible to cover the bone graft material with a titanium mesh or titanium reinforced PTFE membrane to maintain a stable osteogenic space, titanium mesh or titanium reinforced PTFE membrane is not absorbable and often requires secondary surgical removal. In addition, the use of titanium mesh often results in exposure of the titanium mesh, thereby affecting the effectiveness of the bone augmentation procedure.
Disclosure of Invention
The invention mainly solves the technical problem of providing a bone grafting guide plate and a manufacturing method thereof, which can obtain stable osteogenic space and keep good bone increment form.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a bone grafting baffle, bone grafting baffle includes two plastic plates and two fixed parts, two plastic plates are used for respectively contacting with alveolar bone both sides around the bone defect district and both set up relatively along the first direction and form the moulding interval that is used for filling bone increment material, two fixed parts are located two plastic plates's below to set up along second direction interval two plastic plate's both sides, first direction and second direction are roughly perpendicular, the fixed part all is formed with the connecting piece that is connected with two plastic plate's lateral wall respectively along the both sides of first direction, the fixed part towards two plastic plate's surface is formed with the recess, the structure of recess is identical with corresponding tooth crown structure.
Preferably, one end of the connecting piece is fixedly connected with the shaping plate, and the other end of the connecting piece is rotatably connected with the fixing part, so that the connecting piece can be turned over along the second direction.
Preferably, the connecting pieces on the same side of the two fixing parts are mutually inclined to form a triangular supporting structure.
Preferably, the depth of the groove is greater than 1 mm.
Preferably, the plastic plate and the connecting piece are made of resin, and the thickness of the plastic plate and the thickness of the connecting piece are 1mm-10 mm.
Preferably, the plastic plate and the connecting piece are made of metal, and the thickness of the plastic plate and the thickness of the connecting piece are 0.5mm-10 mm.
In order to solve the technical problem, the invention adopts another technical scheme that: the manufacturing method of the bone grafting guide plate comprises the following steps: s1: acquiring an oral cavity image containing jaw bones and teeth of a patient through CBCT equipment, and acquiring a digital image in the mouth of the patient through a scanner; s2: converting the oral cavity image into an editable 3D data format, and importing the oral cavity image into three-dimensional editing software to simulate the bone increment form of a bone defect area to obtain a 3D simulation model; s3: overlapping the 3D simulation model and the digital image to obtain a 3D restoration model; s4: designing and generating a bone grafting guide plate model according to the 3D restoration model; s5: and guiding the bone grafting guide plate model into a cutting device or a 3D printer, and manufacturing a bone grafting guide plate through the cutting device or the 3D printer.
Preferably, the oral cavity image is DICOM data, and the 3D data format is STL format.
Preferably, the step S3 specifically includes: and overlapping the 3D simulation model and the digital image by taking the tooth part common to the 3D simulation model and the digital image as a reference so as to establish a 3D restoration model.
The invention has the beneficial effects that: be different from prior art's condition, form the moulding interval that is used for filling bone increment material through two moulding boards, two moulding boards pass through the fixed part and support, and the fixed part is fixed again on tooth crown to can obtain stable bone formation space, keep good bone increment form, can fix a position with the tooth when the installation, it is more firm after the installation, make subsequent bone increment operation simpler swift, also more predictable, the precision is higher.
Drawings
Fig. 1 is a front view schematically illustrating a bone grafting guide according to an embodiment of the present invention.
Fig. 2 is a perspective view illustrating a bone grafting guide according to an embodiment of the present invention.
Fig. 3 is a schematic flow chart of a method for manufacturing a bone graft guide plate according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of an oral cavity image obtained by a CBCT apparatus.
FIG. 5 is a schematic illustration of a simulated bone augmentation morphology.
Fig. 6 is a schematic diagram of a 3D restoration model.
Fig. 7 is a schematic view of a bone graft guide model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the bone grafting guide plate according to the embodiment of the present invention includes two shaping plates 10 and two fixing portions 20, the two shaping plates 10 are respectively configured to contact both sides of an alveolar bone around a bone defect region and are oppositely disposed along a first direction to form a shaping region for filling a bone augmentation material, and in the embodiment, the first direction is a direction perpendicular to a paper surface. The two fixing portions 20 are located below the two plastic plates 10 and are disposed at intervals on two sides of the two plastic plates 10 along a second direction, which is a direction parallel to the paper surface in this embodiment. The first direction is approximately vertical to the second direction, two sides of the fixing part 20 along the first direction are respectively provided with a connecting piece 21 connected with the outer side walls of the two plastic plates 10, the surface of the fixing part 20 facing the two plastic plates 10 is provided with a groove 22, and the structure of the groove 22 is matched with the structure of the corresponding dental crown.
When using, two plastic plate 10 contact with alveolar bone both sides around the bone defect district respectively, two fixed parts 20 are placed on tooth crown, and in imbedding tooth crown recess 22, fixed part 20 can be fixed like this, fixed part 20 keeps two positions of plastic plate 10 unchangeable again simultaneously, make moulding interval become stable bone forming space, the bone grafting baffle can be with the tooth maintenance when the installation, it is more firm after the installation, and then can keep good bone increment form, make subsequent bone increment operation simple and fast, also more predictable, the precision is higher.
Considering that the two shaping plates 10 may be limited in space when in the placing position, in the present embodiment, one end of the connecting member 21 is fixedly connected to the shaping plate 10, and the other end of the connecting member 21 is rotatably connected to the fixing portion 20, so that the connecting member 21 can be turned in the second direction. Like this, place fixed part 20 back on the tooth crown, can rotate the shaping board 10 of inboard connecting piece 21 of tooth earlier and place the shaping board 10 of outside, rotate the connecting piece 21 of tooth outside again to avoid space restriction. The connecting member 21 and the fixing portion 20 may be rotatably connected by a pin, the pin is fixed on the fixing portion 10, and the end of the connecting member 21 is sleeved on the pin.
In this embodiment, the connecting members on the same side of the two fixing portions 20 are inclined to each other to form a triangular supporting structure. That is, the two connecting members 21 on the same side of the two fixing portions 20 form the side of the triangular supporting structure, the two fixing portions 20 form the bottom of the triangular supporting structure, and the shaping plate 10 forms the top of the triangular supporting structure.
The plastic plate 10 and the fixing part 20 need to have sufficient strength and may be made of resin or metal. In this embodiment, the groove depth is greater than 1 mm. When the shaping plate 10 and the connector 21 are made of resin, the thickness of the shaping plate 10 and the connector 21 is 1mm to 10 mm. When the shaping plate 10 and the connecting member 21 are made of metal, the thickness of the shaping plate 10 and the connecting member 21 is 0.5mm to 10 mm.
Fig. 3 is a schematic flow chart of a method for manufacturing a bone graft guide plate according to an embodiment of the present invention. The method for manufacturing the bone grafting guide plate of the embodiment of the invention can be used for manufacturing the bone grafting guide plate of the previous embodiment. The manufacturing method comprises the following steps:
s1: an image of the oral cavity containing the jaw and teeth of the patient is acquired by a CBCT apparatus, and a digital image of the inside of the patient's mouth is acquired by a scanner.
The oral cavity image may be DICOM data, and the 3D data format is STL format. Compared with the oral cavity image, the digital image has higher precision. The scanner may be a digital intraoral scanner. The mouth image is shown in fig. 4, which includes alveolar bone regions with significant bone defects, the bone defect regions being within the dashed oval frame.
S2: and converting the oral cavity image into an editable 3D data format, and importing the oral cavity image into three-dimensional editing software to simulate the bone increment form of the bone defect area to obtain a 3D simulation model.
After the oral cavity image is converted into a 3D data format, the bone mass increasing form can be simulated in the bone defect area in three-dimensional editing software, so that the optimal bone mass increasing form is output. The 3D simulation model is shown in fig. 5, and after simulation, the bone mass morphology can be clearly and intuitively observed, which is located within the oval dashed frame in the figure.
S3: and overlapping the 3D simulation model and the digital image to obtain a 3D restoration model.
After the 3D simulation model and the digital image are overlapped, a 3D restoration model which can reflect the mouth of the patient more truly can be obtained. As shown in fig. 6, the 3D model is a more realistic 3D model because the mouth image does not include soft tissues in the mouth and the digital image includes soft tissues in the mouth, and the 3D model is overlapped with the digital image.
S4: and designing and generating a bone grafting guide plate model according to the 3D restoration model.
The corresponding bone grafting guide plate model can be designed and generated according to the data of the 3D restoration model, and the data comprises the size of a bone defect area, shape data of two sides of an alveolar bone, the size of a normal tooth near the bone defect area, the shape of a tooth crown of the normal tooth, and the like. The bone grafting guide model is shown in fig. 7, and it can be seen from the figure that the bone grafting guide model can be attached to a 3D restoration model.
S5: and (3) guiding the bone grafting guide plate model into a cutting device or a 3D printer, and manufacturing the bone grafting guide plate through the cutting device or the 3D printer.
In this embodiment, step S3 specifically includes: and taking the tooth part shared by the 3D simulation model and the digital image as a reference, and overlapping the 3D simulation model and the digital image to establish a 3D recovery model.
Through the mode, the bone grafting guide plate and the manufacturing method thereof provided by the embodiment of the invention can be used for designing and generating the bone grafting guide plate model only by acquiring the oral cavity image of the patient through the CBCT equipment and acquiring the digital image in the mouth of the patient through the scanner, simulating, overlapping and the like according to the oral cavity image and the digital image, and finally manufacturing the bone grafting guide plate through the cutting equipment or the 3D printer.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The bone grafting guide plate is characterized by comprising two plastic plates and two fixing parts, wherein the two plastic plates are respectively used for being in contact with two sides of an alveolar bone around a bone defect area and are oppositely arranged along a first direction to form a molding interval for filling bone increment materials, the two fixing parts are positioned below the two plastic plates and are arranged at two sides of the two plastic plates at intervals along a second direction, the first direction is approximately vertical to the second direction, connecting parts respectively connected with the outer side walls of the two plastic plates are respectively formed on two sides of the fixing part along the first direction, grooves are formed on the surfaces of the fixing parts facing the two plastic plates, and the structures of the grooves are matched with the structures of corresponding dental crowns;
wherein, the one end of connecting piece with moulding board fixed connection, the other end of connecting piece with the fixed part is rotated and is connected, so that the connecting piece can be followed the second direction upset.
2. The bone grafting guide of claim 1, wherein the connecting members of the two fixing portions on the same side are inclined to each other to form a triangular supporting structure.
3. A bone grafting guide according to claim 1, wherein the depth of the groove is greater than 1 mm.
4. The bone grafting guide plate according to claim 1, wherein the plastic plate, the fixing part and the connecting member are made of resin, and the thickness of the plastic plate and the connecting member is 1mm to 10 mm.
5. The bone grafting guide plate according to claim 1, wherein the shaping plate, the fixing part and the connecting member are made of metal, and the thickness of the shaping plate and the connecting member is 0.5mm to 10 mm.
6. A method for manufacturing a bone grafting guide plate according to any one of claims 1 to 5, wherein the method comprises the steps of:
s1: acquiring an oral cavity image containing jaw bones and teeth of a patient through CBCT equipment, and acquiring a digital image in the mouth of the patient through a scanner;
s2: converting the oral cavity image into an editable 3D data format, and importing the oral cavity image into three-dimensional editing software to simulate the bone increment form of a bone defect area to obtain a 3D simulation model;
s3: overlapping the 3D simulation model and the digital image to obtain a 3D restoration model;
s4: designing and generating a bone grafting guide plate model according to the 3D restoration model;
s5: and guiding the bone grafting guide plate model into a cutting device or a 3D printer, and manufacturing a bone grafting guide plate through the cutting device or the 3D printer.
7. The method of claim 6, wherein the oral cavity image is DICOM data, and the 3D data format is STL format.
8. The manufacturing method according to claim 6, wherein the step S3 specifically includes:
and overlapping the 3D simulation model and the digital image by taking the tooth part common to the 3D simulation model and the digital image as a reference so as to establish a 3D restoration model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910180443.6A CN109717971B (en) | 2019-03-11 | 2019-03-11 | Bone-grafting guide plate and manufacturing method thereof |
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| CN201910180443.6A CN109717971B (en) | 2019-03-11 | 2019-03-11 | Bone-grafting guide plate and manufacturing method thereof |
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| CN109717971A CN109717971A (en) | 2019-05-07 |
| CN109717971B true CN109717971B (en) | 2020-11-27 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111870400B (en) * | 2020-07-10 | 2021-03-26 | 四川大学 | Alveolar bone augmentation surgery personalized titanium mesh guiding and positioning device and manufacturing method |
| CN112057190B (en) * | 2020-10-13 | 2021-06-15 | 四川大学 | Bone augmentation guide plate for guiding bending and accurate positioning of titanium strip and manufacturing method thereof |
| CN112263358A (en) * | 2020-11-13 | 2021-01-26 | 上海交通大学医学院附属第九人民医院 | Personalized bone powder bone grafting guide plate and construction method thereof |
| CN112842589B (en) * | 2021-03-15 | 2023-07-21 | 北京大学口腔医学院 | Autologous block bone graft bone block trimming guide plate |
| CN115317162B (en) * | 2022-07-11 | 2023-11-10 | 四川大学 | Operation scope demarcating guide plate in bone increment art |
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