3D printing implant for oral implantation

Abstract

The utility model discloses a 3D (three-dimensional) printing implant for oral implantation in the technical field of medical equipment, which comprises an implant structure, the implant structure comprises an implant body, the implant body is of a gradient pore net structure, a bioactive layer is arranged on the outer side of the implant body, and the bioactive layer is made of a transparent material. A bone meal attaching and guiding structure is arranged on the inner wall of a mesh hole of the implant body, a surface fixing structure is arranged on the surface of the implant body, and a bottom fixing structure is arranged at the bottom of the implant body. According to the utility model, the implant body is arranged into the net-shaped structure, and the bone meal attachment and guide structure is matched, so that the bone meal can be guided to directionally grow along the net-shaped pores, the traditional osteogenesis waiting stage is skipped, the implant implantation and bone increment are synchronously completed, and the damage to soft tissues caused by repeated bone meal filling and pressing operation is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of medical devices, and in particular to a 3D-printed implant for dental implantation. Background Technology

[0002] Dental implants, as artificial tooth roots to replace natural tooth roots, offer advantages such as high comfort, high restoration of chewing efficiency, and no damage to adjacent teeth. They have become the preferred treatment option for restoring missing or damaged teeth in clinical dental practice. With the continuous advancement of 3D printing technology, also known as additive manufacturing, which is based on three-dimensional mathematical models, 3D printing utilizes continuous layer-by-layer printing to create a three-dimensional solid object. 3D printing technology can be used to fabricate dental implants during dental treatment.

[0003] Patent publication number CN216570285U discloses a 3D-printed dental implant, including a crown, an abutment, and an implant body. The surface of the crown's bottom has a threaded groove, and a threaded plug is installed inside the groove. The abutment is installed at the bottom of the threaded plug, and the implant body is installed at the bottom of the abutment via a connector. A repair hole is provided at the bottom periphery of the implant body, and a protective coating layer is applied to the outer periphery of the crown. During use, the patient can hold and rotate the crown to separate the threaded groove from the threaded plug, allowing the crown to be removed from the abutment. This facilitates daily cleaning and maintenance of the crown, optimizing the usage process. However, this implant relies on sufficient bone volume in the extraction socket to maintain initial stability. If bone loss is severe, bone powder must be filled first, and bone tissue regeneration must be waited for, leading to a prolonged surgical period. Utility Model Content

[0004] The purpose of this invention is to provide a 3D-printed implant for dental implantation, which can solve the problem that traditional implants rely on sufficient bone volume in the extraction socket to maintain initial stability, and if the bone defect is severe, bone powder needs to be filled first and wait for bone tissue regeneration, which leads to a prolonged surgical cycle.

[0005] To solve the above-mentioned technical problems, this utility model provides a 3D-printed implant for dental implantation, adopting the following technical solution: an implant structure, which includes an implant body, the implant body being a gradient porous mesh structure, a bioactive layer being provided on the outer side of the implant body, a bone powder attachment and guiding structure being provided on the inner wall of the mesh pores of the implant body, a surface fixation structure being provided on the surface of the implant body, and a bottom fixation structure being provided at the bottom of the implant body.

[0006] By adopting the above technical solution, this solution sets the implant body into a mesh structure and, through the combined setting of bone powder attachment and guiding structure, guides bone powder to grow directionally along the mesh pores, skipping the traditional waiting stage for osteogenesis, and achieving simultaneous implant placement and bone augmentation. This avoids a series of problems caused by bone grafting. The bioactive layer promotes bone growth and prevents gingival discoloration caused by metal ion precipitation. The bottom fixation structure provides initial fixation of the implant body in the early stage, and the combined effect of the surface fixation structure fixes the implant body to the alveolar socket, preventing the implant body from loosening or falling out.

[0007] Optionally, the top of the implant body is detachably connected to a base.

[0008] By adopting the above technical solution, it is convenient to disassemble and assemble the abutment, which facilitates postoperative crown restoration or replacement.

[0009] Optionally, the top of the base is provided with a hexagonal groove, and the base height is available in three levels: 3mm, 5mm, and 7mm.

[0010] By adopting the above technical solution, and by using a special torque wrench in conjunction with a hexagonal groove, the abutment can be easily disassembled and tightened. By using abutments of different heights, the abutments can adapt to different gingival thicknesses and crown space requirements.

[0011] Optionally, the implant body is a zirconium oxide implant.

[0012] By adopting the above technical solution, zirconia material has high stability, meeting the long-term use requirements of dental implants. At the same time, regular weight-bearing training during bone growth further enhances the stability of bone formation.

[0013] Optionally, the bioactive layer is a composite coating of high-purity zirconium oxide and hydroxyapatite.

[0014] By adopting the above technical solutions, bone growth can be promoted while avoiding gingival discoloration caused by the precipitation of metal ions.

[0015] Optionally, the bone powder attachment and guiding structure includes a micro-concave groove, which is formed on the inner wall of the mesh pores of the implant body, and the depth of the micro-concave groove is 0.1 mm.

[0016] By adopting the above technical solution, bone meal can be guided to grow in a directional manner along the mesh-like pores.

[0017] Optionally, the surface fixing structure includes a plurality of barbs, all of which are connected to the surface of the implant body.

[0018] By adopting the above technical solution, several barbs slide into the bone wall during antegrade implantation, thereby resisting loosening or rotation of the implant body and further enhancing the stability of the implant body.

[0019] Optionally, the bottom fixing structure includes a threaded post, the diameter of which gradually decreases from top to bottom.

[0020] By adopting the above technical solution, the implant body can be fixed at the bottom of the extraction socket in the early stage of implantation, thus enhancing the initial stability.

[0021] In summary, this utility model has at least one of the following beneficial effects:

[0022] By setting the implant body into a mesh structure and coordinating the bone powder attachment and guiding structure, the bone powder can be guided to grow in a directional manner along the mesh pores, skipping the traditional osteogenesis waiting stage, and realizing the simultaneous completion of implant placement and bone augmentation, avoiding damage to soft tissue caused by repeated bone powder filling operations.

[0023] Using zirconia material for the implant body gives it good biocompatibility and stability, meeting the requirements for long-term use of dental implants. At the same time, regular weight-bearing training during bone growth further enhances the stability of bone formation.

[0024] By combining the surface fixation structure and the bottom fixation structure, the bottom fixation structure can initially fix the bottom fixation structure, while several barbs fix the implant body to the inside of the alveolar socket, preventing the implant body from loosening or falling out.

[0025] By setting the abutment to different heights, it can be adapted to different gingival thicknesses and crown space requirements according to actual conditions, thereby facilitating postoperative crown restoration or replacement and reducing secondary surgical trauma. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the implant structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the connection structure between the implant and the abutment of this utility model;

[0029] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0030] In the picture:

[0031] 1. Implant structure; 101. Implant body; 102. Bioactive layer; 103. Bone meal attachment and guidance structure; 104. Surface fixation structure; 105. Bottom fixation structure;

[0032] 2. Abutment. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-3 The present invention will be described in further detail below.

[0034] Example 1, refer to Figure 1 In this embodiment, in order to solve the problem that traditional implants rely on sufficient bone volume in the extraction socket to maintain initial stability, and if the bone defect is severe, bone powder needs to be filled first and wait for bone tissue regeneration, resulting in a prolonged surgical cycle, this utility model discloses a 3D printed implant for oral implantation, including an implant structure 1, which includes an implant body 101. The implant body 101 is a gradient porous mesh structure, including an outer layer (neck), a middle layer (body), and an inner layer (bottom). The pore size of the outer layer (neck) is 6-8 micrometers, the porosity of the outer layer (neck) is 70%-80%, and the outer layer (neck) is arranged in a honeycomb hexagonal pattern. The pore size of the middle layer (body) is 4-6 micrometers, the porosity of the middle layer (body) is 60%-70%, and the middle layer (body) is arranged in a cross-grid pattern. The pore size of the inner layer (bottom) is 3-4 micrometers, the porosity of the inner layer (bottom) is 50%-60%, and the inner layer (bottom) is arranged radially. The large pores in the outer layer (neck) promote blood vessel ingrowth, while the micropores in the inner layer (bottom) promote osteoblast adhesion and enhance implant stability, avoiding the risk of breakage caused by pressure concentration.

[0035] Reference Figure 1 The implant body 101 has a bioactive layer 102 on its outer side, a bone powder attachment and guidance structure 103 on the inner wall of the mesh pores of the implant body 101, a surface fixation structure 104 on the surface of the implant body 101, and a bottom fixation structure 105 on the bottom of the implant body 101.

[0036] Reference Figure 1 The implant body 101 is a zirconia implant. Zirconia material has high stability, meeting the long-term use requirements of dental implants, and at the same time, it can be subjected to regular weight-bearing training during bone growth to further enhance bone stability.

[0037] Reference Figure 1The bioactive layer 102 is a composite coating of high-purity zirconium oxide and hydroxyapatite. This promotes bone growth while preventing gingival discoloration caused by metal ion release.

[0038] Reference Figure 1 and Figure 3 The bone meal attachment and guiding structure 103 includes micro-concave grooves, which are formed on the inner wall of the mesh pores of the implant body 101, with a depth of 0.1 mm. This allows the bone meal to be guided to grow directionally along the mesh pores.

[0039] Reference Figure 1 and Figure 3 The surface fixation structure 104 includes several barbs, all of which are connected to the surface of the implant body 101. During antegrade implantation, the barbs slide into the bone wall, thereby resisting loosening or rotation of the implant body 101 and further enhancing the stability of the implant body 101.

[0040] Reference Figure 1 The bottom fixation structure 105 includes threaded posts, the diameter of which gradually decreases from top to bottom. This allows the implant body 101 to be fixed at the bottom of the extraction socket during the initial implantation stage, enhancing initial stability.

[0041] Reference Figure 1 The implant body 101 features laser-engraved pores, with silver nanoparticles embedded in the inner walls of these pores. These silver nanoparticles are then incorporated into a chitosan-gelatin composite hydrogel, allowing for the slow release of silver ions through ion exchange, thus achieving a bactericidal effect. The silver ions effectively kill Staphylococcus aureus and Escherichia coli, common causes of oral infections. Furthermore, the hydrogel thickness is less than 1 micrometer, ensuring it does not interfere with bone cell adhesion and growth, thereby improving biocompatibility.

[0042] The specific implementation principle is as follows: CBCT scans the patient's extraction socket to obtain three-dimensional image data. AI analysis technology is used to automatically generate a matching mesh implant model. The specific parameters of the patient's alveolar socket analyzed by AI are imported for 3D printing to obtain the implant body 101. After the patient's tooth extraction, the alveolar socket is cleaned, and the customized implant body 101 is directly implanted into the alveolar socket. Initial fixation is achieved using the bottom fixation structure 105 at the bottom of the implant body 101. By connecting several barbs to the surface of the implant body 101, it can resist loosening or rotation of the implant body 101, further enhancing the stability of the implant body 101. Then, using professional surgical instruments, the patient's autologous bone powder is injected into the micro-concave groove on the bone powder attachment and guidance structure 103. After observing for a period of time to confirm that the bone powder and the implant body 101 are completely integrated, a porcelain crown is then installed on the surface of the implant body 101. After the operation, the patient's implant is subjected to appropriate intensity of weight-bearing training at regular intervals to promote bone growth inside the implant.

[0043] Example 2, refer to Figure 1 and Figure 2 In this embodiment, based on the same concept as in Embodiment 1 above, the 3D printed implant for dental implantation also includes an abutment 2 detachably connected to the top of the implant body 101. The detachable connection is a threaded connection, which facilitates the disassembly and assembly of the abutment 2 and makes it convenient for postoperative crown restoration or replacement.

[0044] Reference Figure 1 and Figure 2 The top of the abutment 2 has a hexagonal groove. The abutment height is available in three levels: 3mm, 5mm, and 7mm. By using a special torque wrench in conjunction with the hexagonal groove, the abutment 2 can be easily disassembled and tightened. By using abutments 2 of different heights, the abutment 2 can adapt to different gingival thicknesses and crown space requirements.

[0045] The specific implementation principle is as follows: The crown is placed on the outside of the abutment 2. Due to the different thickness of the gums, abutments 2 of different heights are required to match the crown. The abutment 2 can be disassembled and installed on the top of the implant structure 1 through the threaded connection. When it is necessary to replace the abutment 2 of different heights, a special torque wrench is inserted into the hexagonal groove to disassemble the abutment 2 and replace it with the abutment 2 of the required height. This facilitates postoperative crown restoration or replacement and reduces the trauma of secondary surgery.

[0046] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A 3D printed implant for oral implantation, characterized in that: include The implant structure (1) includes an implant body (101), which is a gradient porous mesh structure. A bioactive layer (102) is provided on the outer side of the implant body (101). A bone powder attachment and guiding structure (103) is provided on the inner wall of the mesh pores of the implant body (101). A surface fixation structure (104) is provided on the surface of the implant body (101). A bottom fixation structure (105) is provided at the bottom of the implant body (101).

2. The 3D printed implant for oral implantation according to claim 1, characterized in that: The top of the implant body (101) is detachably connected to a base (2).

3. The 3D printed implant for oral implantation according to claim 2, characterized in that: The top of the base (2) is provided with a hexagonal groove, and the height of the base is divided into three levels: 3mm, 5mm and 7mm.

4. The 3D printed implant for oral implantation according to claim 1, characterized in that: The implant body (101) is a zirconium oxide implant.

5. The 3D printed implant for oral implantation according to claim 1, characterized in that: The bone powder attachment and guiding structure (103) includes a micro-concave groove, which is formed on the inner wall of the mesh pores of the implant body (101), and the depth of the micro-concave groove is 0.1 mm.

6. A 3D-printed implant for dental implantation according to claim 1, characterized in that: The surface fixing structure (104) includes a plurality of barbs, all of which are connected to the surface of the implant body (101).

7. The 3D printed implant for oral implantation according to claim 1, wherein: The bottom fixing structure (105) includes a threaded post, the diameter of which gradually decreases from top to bottom.

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