阅读说明：本技术 一种牙种植体及其制作方法 (Dental implant and manufacturing method thereof ) 是由 张春雨 季方秋 陈贤帅 于 2021-06-30 设计创作，主要内容包括：本发明的实施例提供了一种牙种植体及其制作方法,所述牙种植体包括：外部结构,所述外部结构具有第一孔；内部结构,所述内部结构安装于所述第一孔内,所述内部结构具有第二孔；植骨件,所述植骨件穿设于所述第二孔上,且其底部植入牙槽骨内。其由植骨件、内部结构和外部结构组成,通过植骨件植入于在部分牙槽骨的方式保证了牙种植体的初期稳定性。有效地解决了现有技术中存在着的由于牙种植体的初期稳定性较差,导致骨缺损较大患者的牙种植成功率不高的技术问题。(The embodiment of the invention provides a dental implant and a manufacturing method thereof, wherein the dental implant comprises: an outer structure having a first aperture; an inner structure mounted within the first bore, the inner structure having a second bore; and the bone grafting piece penetrates through the second hole, and the bottom of the bone grafting piece is implanted into the alveolar bone. The dental implant comprises a bone grafting piece, an internal structure and an external structure, and the initial stability of the dental implant is ensured in a mode that the bone grafting piece is implanted in part of alveolar bone. Effectively solves the technical problem that the dental implant has poor initial stability and causes low success rate of dental implantation of patients with large bone defects in the prior art.)

1. A dental implant, comprising:

an outer structure having a first aperture;

an inner structure mounted within the first bore, the inner structure having a second bore;

and the bone grafting piece penetrates through the second hole, and the bottom of the bone grafting piece is implanted into the alveolar bone.

2. The dental implant of claim 1, wherein the outer surface of the outer structure has a plurality of cavities for the placement of bone tissue and/or bone meal.

3. The dental implant of claim 1, wherein the second hole comprises:

a first sub-orifice;

a second sub-orifice in communication with the first sub-orifice, the first sub-orifice having a larger diameter than the second sub-orifice;

wherein the bone grafting piece is arranged on the first branch hole and the second branch hole in a penetrating way.

4. The dental implant of claim 3, wherein the bone-implant member comprises:

a first section fitted with the first tap hole;

and the second section is connected with the first section and penetrates through the second branch hole.

5. The dental implant of claim 4, wherein the second section has a first external thread disposed on an outer surface thereof, and the second sub-bore has a first internal thread disposed therein, the first internal thread and the first external thread being adapted to each other.

6. The dental implant of claim 5, wherein the first section has a recess formed in a top portion thereof, and wherein the recess has an action portion on a side wall thereof, the action portion being acted upon by a tool to rotate the bone implant.

7. The dental implant of claim 6, wherein the first section has a receiving cavity therein, the peripheral cavity wall of the receiving cavity having a second internal thread thereon.

8. The dental implant of claim 7, wherein the first stage comprises:

a first segment;

a second section connected to the first section, the second section having a top diameter greater than a bottom diameter thereof;

wherein the groove is located in the first section and the second internal thread is located in the first section and the second section.

9. A method for manufacturing a dental implant, the method comprising the steps of:

acquiring information of alveolar bone defect of a patient;

generating an alveolar bone model with defects according to the information;

obtaining a model of the prosthesis part according to the alveolar bone model;

generating a model of an external structure, a model of an internal structure and a model of an implant according to the model of the prosthesis portion;

generating an external structure, an internal structure and a bone graft from the model of the external structure, the model of the internal structure and the model of the bone graft;

a dental implant is made from the outer structure, the inner structure and the bone graft.

10. Method for the production of a dental implant according to claim 9, characterized in that the generation of the external structure, the internal structure and the bone graft from the model of the external structure, the model of the internal structure and the model of the bone graft is in particular:

printing to generate an external structure initial blank and an internal structure initial blank according to the external structure model and the internal structure model;

carrying out sand blasting and polishing treatment on the external structure initial blank and the internal structure initial blank to obtain an external structure and an internal structure;

and generating the bone implant according to the model of the bone implant.

Technical Field

The invention relates to the technical field of biomedical engineering, in particular to a dental implant and a manufacturing method thereof.

Background

The tooth implantation operation is the best repairing mode for repairing missing dentition at present, and the principle is that an implant hole is drilled on an alveolar bone in advance, and then an implant is screwed into the implant hole to be combined with the alveolar bone. The alveolar bone loss of a patient caused by tumor or mechanical injury needs to be repaired by bone grafting or bone powder filling and the like, and then a secondary dental implantation operation is performed on the patient needing dental implantation. For patients with large alveolar bone defects, when autologous bones cannot be completely repaired, a repair prosthesis is needed for repair. Prosthetic prostheses generally mimic the contour of a patient's natural bone and serve to retain the bone while supporting the contour.

In the prior art, the dental implant has poor initial stability, so that the success rate of dental implantation of patients with large bone defects is low.

Disclosure of Invention

In order to solve the above problems, the present invention aims to provide a dental implant for solving the technical problem of low success rate of dental implantation for patients with large bone defects due to poor initial stability of the dental implant in the prior art.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

an embodiment of the present invention provides a dental implant, including:

an outer structure having a first aperture;

an inner structure mounted within the first bore, the inner structure having a second bore;

and the bone grafting piece penetrates through the second hole, and the bottom of the bone grafting piece is implanted into the alveolar bone.

Further, the outer surface of the outer structure has a plurality of cavities for the placement of bone tissue and/or bone meal.

Further, the second hole includes:

a first sub-orifice;

a second sub-orifice in communication with the first sub-orifice, the first sub-orifice having a larger diameter than the second sub-orifice;

wherein the bone grafting piece is arranged on the first branch hole and the second branch hole in a penetrating way.

Further, the bone graft includes:

a first section fitted with the first tap hole;

and the second section is connected with the first section and penetrates through the second branch hole.

Furthermore, a first external thread is arranged on the outer surface of the second section, a first internal thread is arranged in the second branch hole, and the first internal thread is matched with the first external thread.

Furthermore, the top of the first section is provided with a groove, the side wall of the groove is provided with an acting part, and a tool acts on the acting part, so that the bone-grafting piece rotates.

Furthermore, the first section is provided with an accommodating cavity, and the peripheral cavity wall of the accommodating cavity is provided with a second internal thread.

Further, the first segment includes:

a first segment;

a second section connected to the first section, the second section having a top diameter greater than a bottom diameter thereof;

wherein the groove is located in the first section and the second internal thread is located in the first section and the second section.

The embodiment of the invention also provides a manufacturing method of the dental implant, which comprises the following steps:

acquiring information of alveolar bone defect of a patient;

generating an alveolar bone model with defects according to the information;

obtaining a model of the prosthesis part according to the alveolar bone model;

generating a model of an external structure, a model of an internal structure and a model of an implant according to the model of the prosthesis portion;

generating an external structure, an internal structure and a bone graft from the model of the external structure, the model of the internal structure and the model of the bone graft;

a dental implant is made from the outer structure, the inner structure and the bone graft.

Further, the generating the external structure, the internal structure and the bone graft according to the model of the external structure, the model of the internal structure and the model of the bone graft is specifically:

printing to generate an external structure initial blank and an internal structure initial blank according to the external structure model and the internal structure model;

carrying out sand blasting and polishing treatment on the external structure initial blank and the internal structure initial blank to obtain an external structure and an internal structure;

and generating the bone implant according to the model of the bone implant.

Compared with the prior art, the embodiment of the invention has the beneficial effects that:

an embodiment of the present invention provides a dental implant, including: an outer structure having a first aperture; an inner structure mounted within the first bore, the inner structure having a second bore; and the bone grafting piece penetrates through the second hole, and the bottom of the bone grafting piece is implanted into the alveolar bone. The dental implant comprises a bone grafting piece, an internal structure and an external structure, and the initial stability of the dental implant is ensured in a mode that the bone grafting piece is implanted in part of alveolar bone. Effectively solves the technical problem that the dental implant has poor initial stability and causes low success rate of dental implantation of patients with large bone defects in the prior art.

The embodiment of the invention also provides a manufacturing method of the dental implant, and the manufacturing method of the dental implant effectively solves the technical problem that the dental implant success rate of patients with large bone defects is low due to poor initial stability of the dental implant in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural view of an implant component of a dental implant according to an embodiment of the present invention;

FIG. 2 is a schematic top view of an implant component of a dental implant according to an embodiment of the present invention;

FIG. 3 is a schematic structural view illustrating an internal structure of a dental implant according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of an external structure of a dental implant according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a dental implant according to an embodiment of the present invention.

Wherein:

1. an implantable bone element; 11. a first segment; 12. a second section; 13. a second stage; 111. a groove; 112. a second internal thread; 2. an internal structure; 21. a second sub-hole; 22. a first sub-orifice; 3. an outer structure; 31. a bore.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 to 2, the present embodiment provides a dental implant comprising:

an outer structure 3, said outer structure 3 having a first aperture;

an inner structure 2, the inner structure 2 being mounted in the first hole, the inner structure 2 having a second hole;

and the bone grafting piece 1 is arranged on the second hole in a penetrating way, and the bottom of the bone grafting piece 1 is implanted into the alveolar bone.

Wherein, the whole bone grafting piece 1 is a revolving body structure; the external structure 3, the internal structure 2 and the bone grafting piece 1 are mainly made of pure titanium or titanium alloy harmless to human bodies; the three-dimensional (3D) printing SLM technology and the machining secondary auxiliary processing technology are mainly adopted for manufacturing.

The inner structure 2 is a cylindrical structure, the outer structure 3 is a hollow revolving body circular truncated cone structure, and a cylindrical hole is formed in the inner structure and matched with the inner structure 2. The upper diameter of the outer structure 3 is smaller than the lower diameter.

The inner structure 2 is mounted on the first hole of the outer structure 3, so that the inner structure 2 and the outer structure 3 together form a main structure.

In the dental implant of this embodiment, it comprises bone grafting part 1, inner structure 2 and outer structure 3, has guaranteed the initial stability of dental implant through the mode that bone grafting part 1 is implanted in partial alveolar bone. Effectively solves the technical problem that the dental implant has poor initial stability and causes low success rate of dental implantation of patients with large bone defects in the prior art.

Further, the outer surface of the outer structure 3 has several cavities 31, said cavities 31 being used for bone tissue and/or bone meal placement.

The periphery of the external structure 3 is provided with a plurality of cavities 31 in an arrangement mode, so that a porous structure is formed outside the external structure 3 and used for inducing bones to grow into titanium mesh pores, and better biocompatibility and combination stability are achieved.

Wherein the cavities 31 are holes with a diameter of 0.5mm evenly distributed over the outer circumference of the outer structure 3.

When the implantation operation is carried out, redundant healthy bone tissues are ground and mixed with bone powder to be placed into the cavity 31 of the external structure 3, then the external structure 3 is placed at the bottom of the alveolar bone defect part, and the mixture of the bone powder and autologous bone is filled around the external structure.

Further, the second hole includes:

a first branch hole 22; the first branch hole 22 is a conical hole at the top inner side of the inner structure 2 close to the center;

a second branch hole 21, the second branch hole 21 communicating with the first branch hole 22, the first branch hole 22 having a larger diameter than the second branch hole 21;

wherein, the bone grafting piece 1 is arranged on the first branch hole 22 and the second branch hole 21 in a penetrating way.

In particular, the bone implant 1 comprises:

a first section that fits into the first branch bore 22;

and the second section 13 is connected with the first section 13, and the second section 13 is arranged on the second branch hole 21 in a penetrating manner.

The second section 13 is a bone grafting section which is a columnar structure with the diameter of 2mm, and a first external thread is designed on the outer surface of the second section 13. A first internal thread is arranged in the second branch hole 21, and the first internal thread is matched with the first external thread.

The length of the second section 13 is designed according to the defect height of the alveolar bone, and the length of the second section is more than 2mm of the defect height. The bottom of the bone grafting section is provided with four trapezoidal grooves 111 which are uniformly distributed. So that the self-tapping property can be better when the implant is implanted into the alveolar bone.

Wherein, the top of the first section is provided with a groove 111, the side wall of the groove 111 is provided with an acting part, and the acting part is acted on by a tool, so that the bone-grafting piece 1 rotates.

The cross section of the groove 111 on the first segment may be polygonal, rectangular or prismatic, and may be inserted and rotated by a corresponding tool, so as to facilitate the installation of the bone implant 1 in the alveolar bone.

Specifically, the first segment includes:

a first section 11;

a second section 12, the second section 12 being connected to the first section 11, the second section 12 having a top diameter greater than a bottom diameter thereof;

wherein the groove 111 is located in the first section 11 and the second internal thread 112 is located in the first section 11 and the second section 12.

The second section 12 is connected with the top of the second section 13 and is in a circular truncated cone-shaped structure, and the connection transition diameter of the circular truncated cone-shaped structure and the second section 13 is increased in sequence.

The first section 11 is a supporting platform structure connected with the first section 11 of the circular truncated cone-shaped structure, and is cylindrical, a hexagonal groove 111 is formed in the center of the inside of the supporting platform structure, an accommodating cavity is formed in the first section, and a second internal thread 112 is formed in the wall of the peripheral cavity of the accommodating cavity. I.e., a second female threaded bore 112 having a hexagonal recess 111 that is cylindrical downward, the second female threaded bore 112 extending to the vicinity of the boundary between the second section 12 and the second section 13. Connected to the second internally threaded bore 112 is a tapered bore which extends to the second section 13.

When the implantation operation is performed, firstly, the affected part of the alveolar bone of the patient is opened, and the excess bone tissue is removed through the operation and the autologous bone of the patient is collected. Grinding redundant healthy bone tissues, mixing the ground healthy bone tissues with bone powder, putting the mixture into a cavity 313 of an external structure 3, then penetrating an internal structure 2 on the external structure 3 to form a main structure, putting the main structure at the bottom of the alveolar bone defect part, and filling the mixture of the bone powder and autologous bone around the main structure. Screwing the bone implant 1 into the first internal threaded hole of the inner structure 22, while temporarily retaining the inner structure 2 using a surgical instrument; the second segment 13 of the implant 1 is then partially implanted in rotation into the alveolar bone through the hexagonal recess 111 using a tool, while achieving retention of the implant 1; after the retention is finished, the outer surface of the dental implant is filled with broken bone and bone powder, and then is covered with a biological film. Finally, the soft tissue around the gingiva is sutured, ensuring that the top of the first section 11 of the bone implant 1 is exposed outside the gingiva. And after the bone tissue of the patient smoothly grows into the repair titanium mesh and is stabilized, performing crown installation operation.

The dental implant of the embodiment is composed of the bone implant 1, the internal structure 2 and the external structure 3, and the initial stability of the dental implant is ensured by implanting the bone implant 1 in a part of alveolar bone. Meanwhile, the natural gap of the alveolar bone defect position is utilized to manufacture the external structure 3 and the internal structure 2 of the internal-large external-small structure, so that a main structure is formed together, and the main structure is combined with the individualized design of the bone grafting shape of the patient, so that the long-term planting stability of the dental implant is ensured. The external structure 3 of the main structure of the dental implant is provided with a porous structure and is used for inducing the bone to grow into the titanium mesh, thereby achieving better biocompatibility and combination stability. Meanwhile, the device has the advantages of being convenient to install, remarkably reducing the times of operations, reducing the difficulty of the operations, shortening the recovery time of a patient and improving the success rate of planting.

The embodiment of the invention also provides a manufacturing method of the dental implant, which is characterized by comprising the following steps:

acquiring information of alveolar bone defect of a patient;

the method comprises the steps of scanning the position of alveolar bone defect of a patient through CT to obtain the information of the alveolar bone defect of the patient, wherein the information of the alveolar bone defect of the patient comprises position information, shape information, peripheral alveolar bone information and the like of the alveolar bone defect of the patient;

generating an alveolar bone model with defects according to the information;

the information is imported into Magics software to generate an STL-format alveolar bone model with defects;

obtaining a model of the prosthesis part according to the alveolar bone model;

the alveolar bone model with the defects of the patient is placed in Magics software, the defects are repaired through a stretching function, and a complete alveolar bone model can be obtained;

and processing the complete alveolar bone model and the alveolar bone model with defects of the patient in Magics software, and obtaining the model of the prosthesis part through a Boolean operation function.

Generating a model of the outer structure 3, a model of the inner structure 2 and a model of the bone graft 1 from the model of the prosthesis portion;

measuring the data of the height, the width and the like of a model of the repaired body part in Magics software;

from the prosthesis data, a model of the outer structure 3, a model of the inner structure 2 and a model of the bone graft 1 are generated.

The internal structure 2 is designed in three-dimensional software, the external structure 3 is designed in 3-matic software, and then Boolean operation is carried out on the internal structure and the external structure in Magics software to be combined together to obtain a main structure model of the dental implant.

Generating an external structure 3, an internal structure 2 and a bone implant 1 from a model of the external structure 3, a model of the internal structure 2 and a model of the bone implant 1;

wherein, the generating of the external structure 3, the internal structure 2 and the bone implant 1 according to the model of the external structure 3, the model of the internal structure 2 and the model of the bone implant 1 is specifically:

printing to generate an external structure 3 initial blank and an internal structure 2 initial blank according to the model of the external structure 3 and the model of the internal structure 2;

carrying out sand blasting and polishing treatment on the external structure 3 initial blank and the internal structure 2 initial blank to obtain an external structure 3 and an internal structure 2;

the implant 1 is generated from the model of the implant 1.

And guiding the main structure model of the dental implant into an SLM printer for printing and manufacturing to obtain an external structure 3 initial blank and an internal structure 2 initial blank, assembling the initial blanks into the main structure initial blank, and performing sand blasting, polishing and other treatments to remove unfused pure titanium particles of the prosthesis so as to form the finished main structure. And (3) carrying out secondary processing on the internal hole threads and the holes of the main body structure through machining, and simultaneously manufacturing the bone implant 1.

A dental implant is made from the outer structure 3, the inner structure 2 and the bone graft 1.

After the dental implant is sterilized, autologous bone fragments and bone inducing factors of a patient are filled in the cavity 31 of the external structure 3, and then the dental implant before implantation surgery is obtained.

The dental implant manufactured by the manufacturing method of the dental implant of the embodiment comprises the bone implant 1, the internal structure 2 and the external structure 3, and the initial stability of the dental implant is ensured by implanting the bone implant 1 in part of the alveolar bone. Meanwhile, the natural gap of the alveolar bone defect position is utilized to manufacture the external structure 3 and the internal structure 2 of the internal-large external-small structure, so that a main structure is formed together, and the main structure is combined with the individualized design of the bone grafting shape of the patient, so that the long-term planting stability of the dental implant is ensured. The external structure 3 of the main structure of the dental implant is provided with a porous structure and is used for inducing the bone to grow into the titanium mesh, thereby achieving better biocompatibility and combination stability. Meanwhile, the device has the advantages of being convenient to install, remarkably reducing the times of operations, reducing the difficulty of the operations, shortening the recovery time of a patient and improving the success rate of planting.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.