High-adaptation root-shaped implant

Abstract

The invention discloses a high-adaptation root-shaped implant, and relates to the technical field of dental implants, and the high-adaptation root-shaped implant comprises a root-shaped implant; the appearance of the root-shaped implant is completely fit with a tooth extraction socket; an inward groove is formed in the top of the root-shaped implant; the groove is used for fixing the central bolt and the false tooth implanting abutment; the root-shaped implant is manufactured by adopting 3D printing based on target oral cavity CT data; the target oral CT data is CT data at a tooth extraction socket; and the groove is prepared on the root-shaped implant by machine part processing based on the bottom forms of the denture implant abutment and the central bolt. According to the root-shaped implant disclosed by the invention, different types of center bolts and false tooth implanting abutment can be adaptively mounted, and meanwhile, the period time of a tooth implanting operation can be effectively shortened by applying the root-shaped implant.

Description

Technical Field

[0001] The present application relates to the technical field of dental implants, and particularly relates to a highly adaptable root-shaped implant. Background Art

[0002] In traditional dental implant surgeries, common surgical devices such as implants, central bolts, and denture abutments are pre-purchased, and their parameters such as model, size, and shape are generally fixed. The process of dental implant surgery is to effectively fix and install these devices on the basis of the extraction socket, ultimately achieving effective tooth implantation.

[0003] For the young group, the doctor will use a scalpel or laser device to cut the gum in the surgical area to expose the alveolar bone, and then use professional tools such as a bone drill or bone chisel to prepare a bone bed suitable for the implant on the alveolar bone (the shape and size of the bone bed are mainly determined according to the size of the implant). After the bone powder filling is completed, the doctor will implant the implant into the bone bed and wait for further healing; for the elderly group, due to the problem of serious damage to the alveolar bone in most of them, before preparing the bone bed, it is necessary to first fill the bone defect part with bone powder, then cover the regeneration membrane and suture the wound, and wait for a period of recuperation before proceeding with the above processes of preparing the bone bed and filling the implant.

[0004] It can be seen that traditional dental implant surgeries usually need to go through links such as filling and bone supplementation at the extraction socket and bone bed preparation, and each link requires a recuperation stage after completion. Therefore, the entire dental implant surgery cycle is relatively long. At the same time, since the fixed installation of the implant, central bolt, and denture abutment in dental implant surgery is mutually matched according to their models, and it is not easy to replace the implant after implantation. Once you want to use other types of central bolts or denture abutments, they cannot be adaptively installed on the original implant. Summary of the Invention

[0005] The purpose of the present application is to provide a highly adaptable root-shaped implant, which can be adaptively installed with different types of central bolts and denture abutments, and at the same time, the application of this root-shaped implant can also effectively shorten the cycle time of dental implant surgery.

[0006] To achieve the above purpose, the present application provides the following solutions:

[0007] The present application provides a highly adaptable root-shaped implant, including: a root-shaped implant;

[0008] The outer shape of the root-shaped implant completely fits the extraction socket; an inward groove is provided at the top of the root-shaped implant; the groove is used to fix the central bolt and the denture abutment;

[0009] The root-shaped implant is fabricated by 3D printing based on the target oral CT data, and the target oral CT data is the CT data at the tooth extraction socket.

[0010] The groove is prepared on the root-shaped implant by machining based on the bottom shapes of the denture implant abutment and the central bolt.

[0011] Optionally, the material for 3D printing the root-shaped implant is titanium alloy.

[0012] Optionally, a first thread is arranged on the bottom side wall of the groove.

[0013] Optionally, a second thread is arranged at the bottom of the central bolt.

[0014] Optionally, a through hole penetrating up and down is formed in the denture implant abutment, and the internal shape of the through hole is thicker at the top and thinner at the bottom.

[0015] Optionally, the central bolt passes through the through hole from top to bottom, the top of the central bolt is clamped in the through hole, and the second thread at the bottom of the central bolt passes out of the through hole and meshes with the first thread. According to the specific embodiments provided by the present application, the following technical effects are disclosed by the present application:

[0016] The root-shaped implant of the present application is fabricated by 3D printing based on the computed tomography (CT) data at the tooth extraction socket, and its external shape also completely fits the tooth extraction socket. Therefore, during the dental implant surgery, there is no need to prepare a bone bed on the alveolar bone that conforms to the shape and size of the implant, nor is there a need to bone graft the alveolar bone defect. Instead, an external force is directly applied to the 3D-printed root-shaped implant, and it is fixed at the tooth extraction socket and waits for healing. This undoubtedly saves the surgical operations and healing time of links such as bone powder filling and bone bed preparation, and greatly shortens the cycle time of the dental implant surgery. In addition, after the 3D printing of the root-shaped implant is completed, a groove can be machined on the root-shaped implant according to the bottom shapes of the central bolt and the denture implant abutment. Since the groove is prepared based on the central bolt and the denture implant abutment, its size, shape, and structure are completely adapted to the central bolt and the denture implant abutment, and can be arbitrarily prepared by machining on the root-shaped implant according to different types of central bolts and denture implant abutments. This makes the root-shaped implant in the present application have high adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a sectional view of a highly adaptable root-shaped implant in an embodiment of the present application.

[0019] Symbol markings:

[0020] Root-shaped implant - 1, Central bolt - 2, Denture implant abutment - 3, Through hole - 31. Specific embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0022] Currently, the root-shaped implants applied clinically are all designed as one-piece, that is, the denture implant abutment and the implant are designed as an integral structure. However, such an integrated design may have the following problems: The integrated design makes the implant vulnerable to external forces during the healing period, which may affect the osseointegration of the implant; because the implant communicates with the oral cavity during the healing period, it may increase the risk of implant infection; due to different surface treatment requirements for the implant and the denture implant abutment, the one-piece structure is also more difficult in post-treatment, and the rough surface of the denture implant abutment may increase the incidence of peri-implantitis, thereby reducing the long-term success rate. Therefore, it is necessary to further design and continuously optimize the two-piece or three-piece root-shaped implants.

[0023] In addition, when using traditional conical columnar implants for dental implantation, it is necessary to go through steps such as minimally invasive tooth extraction, preparing the implant hole, implanting bone powder, covering the collagen membrane, submerged healing, second-stage surgery, dental crown fabrication and insertion. The entire treatment cycle takes about 6 - 8 months, the doctor's operation time is about 8 hours, and the cost of each tooth is also over ten thousand yuan.

[0024] The purpose of the present application is to provide a highly adaptable root-shaped implant that can be adaptably installed with different types of central bolts and denture implant abutments. At the same time, the application of this root-shaped implant can also effectively shorten the cycle time of dental implantation surgery.

[0025] To make the above objects, features, and advantages of the present application more apparent and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In an exemplary embodiment, as Figure 1 shown, the present application provides a highly adaptable root-shaped implant, including: a root-shaped implant 1; the outer shape of the root-shaped implant 1 completely fits the extraction socket. The root-shaped implant 1 is fabricated by 3D printing based on the target oral CT data (i.e., the CT data at the extraction socket) during actual application. The specific process is as follows:

[0027] First, use a dental scanner to perform a laser scan on the human oral cavity to obtain the oral CT data of the human body; then import the oral CT data into model reconstruction software (such as Mimics, 3D-slicer, etc.). Set the thresholds for different oral attribute categories (teeth, bones, etc.) in the model reconstruction software and perform threshold segmentation on the oral CT data (the data thresholds corresponding to different teeth and bones are different) to obtain the data of the teeth to be implanted; perform three-dimensional reconstruction based on the data of the teeth to be implanted to obtain a three-dimensional model of the teeth to be implanted; import the three-dimensional digital model of the teeth to be implanted into reverse reduction software, and determine the position of the jaw bone corresponding to the teeth to be implanted in this software, construct a plane that fits the upper surface of the jaw bone, and use this plane and the plane cutting tool in the software to perform upper and lower segmentation on the three-dimensional model of the teeth to be implanted, forming two upper and lower parts, namely the crown model of the upper part and the root model of the lower part; finally, the thickness can be increased or decreased by 0.1 - 0.3 mm on the basis of this root model, and multiple alternative root-shaped implants 1 can be prepared using 3D printing technology. Respectively adapt them to the extraction socket, and finally select a root-shaped implant 1 with a high matching degree and strong stability for use.

[0028] As a preferred embodiment, the material of the 3D-printed root-shaped implant 1 is titanium alloy.

[0029] Furthermore, an inward groove is provided at the top of the root-shaped implant 1. The groove is used to fix the central bolt 2 and the denture implant abutment 3. The groove is prepared on the root-shaped implant 1 by machine processing based on the bottom shapes of the denture implant abutment 3 and the central bolt 2. Since machine processing has high precision and rapidity, after the root-shaped implant 1 is prepared, a groove that matches the bottom shapes of the denture implant abutment 3 and the central bolt 2 can be arbitrarily opened on its upper surface, which also makes the root-shaped implant 1 have high adaptability.

[0030] Further, a first thread is arranged on the bottom side wall of the groove; a second thread is arranged at the bottom of the central bolt; a through hole 31 penetrating up and down is formed in the dental implant abutment 3, and the internal shape of the through hole 31 is thick at the top and thin at the bottom. In the actual application process, after the central bolt 2 passes through the through hole 31 from top to bottom, the top of the central bolt 2 is clamped in the through hole 31, and the second thread at the bottom of the central bolt 2 passes through the through hole 31 and meshes with the first thread in the groove.

[0031] If the above-mentioned 3D printed root-shaped implant is used in dental implant surgery, only minimally invasive tooth extraction, implanting the root-shaped implant and dental crown restoration are required. The chairside treatment cycle is 1-2 hours, and the doctor's operation time is only half an hour. The treatment cost is greatly reduced and is expected to be controlled within one thousand yuan.

[0032] In summary, the present application mainly has the following advantages:

[0033] (1) More minimally invasive. Since the root-shaped implant is consistent with the root shape, there is no need to flap for implant socket preparation, avoiding damage to important anatomical structures such as the mandibular canal and maxillary sinus, and at the same time avoiding possible thermal damage to the alveolar bone during the socket preparation process.

[0034] (2) The indication range of immediate implant is expanded, and immediate implant of posterior teeth can be achieved.

[0035] (3) It matches the shape of the extraction socket, has good initial stability, reduces the application of materials such as bone powder, and reduces the treatment cost.

[0036] (4) It is consistent with the anatomical structure of the natural tooth root, and the stress conduction is similar to that of the natural tooth, which is beneficial to the health of the surrounding soft and hard tissues.

[0037] (5) After adding a fine topography on the implant surface by using 3D printing technology, its biomechanical compatibility with the extraction socket is better, which is beneficial to stress conduction and reduces the occurrence of adverse forces such as stress concentration, thereby being able to reduce the incidence of mechanical complications such as implant fracture and biological complications such as bone resorption and bone ridge fracture.

[0038] (6) Immediate implant can reduce the amount of marginal bone loss compared with delayed implant. Coupled with the personalized abutment shape, it is beneficial to the restoration and maintenance of the gingival shape, and the aesthetics is better.

[0039] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts among the various embodiments can be referred to each other.

[0040] In this text, specific examples are used to illustrate the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A highly adaptable root-shaped implant, characterized in that: include: Root-shaped implants; The shape of the root-shaped implant completely fits the tooth extraction socket; an inward groove is provided on the top of the root-shaped implant; the groove is used to fix the central bolt and the denture implant base; The root-shaped implant is produced by 3D printing based on target oral CT data; the target oral CT data is the CT data of the tooth extraction socket; The groove is prepared on the root-shaped implant by machine processing based on the bottom shape of the denture implant base and the central bolt.

2. The highly adaptable root-shaped implant according to claim 1, characterized in that: The material used for 3D printing the root-shaped implant is a metal titanium alloy.

3. The highly adaptable root-shaped implant according to claim 1, characterized in that: A first thread is arranged on the bottom side wall of the groove.

4. The highly adaptable root-shaped implant according to claim 3, characterized in that: A second thread is arranged at the bottom of the central bolt.

5. The highly adaptable root-shaped implant according to claim 4, characterized in that: The denture implant base is provided with a through hole which passes through from top to bottom; the internal shape of the through hole is thick at the top and thin at the bottom.

6. The highly adaptable root-shaped implant according to claim 5, characterized in that: The central bolt passes through the through hole from top to bottom; the top of the central bolt is clamped in the through hole; the second thread at the bottom of the central bolt passes through the through hole and meshes with the first thread.

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