Dental implant

Abstract

The dental implant comprises an implant neck part and an implant root part, the outer surface of the implant neck part is provided with a first thread structure, and the outer surface of the implant root part is provided with a second thread structure; the thread density of the first thread structure is larger than that of the second thread structure, and the lead of the second thread structure is the same as that of the first thread structure. The maximum outer diameter of the first thread structure is smaller than or equal to the maximum outer diameter of the second thread structure. The dental implant has the advantages that the dental implant is stable in the initial stage of implantation and smooth in screwing, bone tissue damage is reduced, periarthritis treatment is simplified, and the dental implant adapts to different bone conditions.

Description

A dental implant Technical Field

[0001] This application relates to the field of dental implant technology, specifically to a dental implant. Background Technology

[0002] The success of dental implants in oral medicine largely depends on the quantity and quality of bone. Bone quality is a crucial consideration in implant treatment planning, directly affecting implant design, surgical planning, wound healing time, and occlusal load. Bone quality is classified into Class I, Class II, Class III, and Class IV bone, with Class I having the highest density and Class IV the lowest. Studies show that the failure rate for Class I, Class II, and Class III bone implants is approximately 3%, while the failure rate for Class IV bone is approximately 10%.

[0003] Current dental implant technologies typically employ cylindrical, screw-type, compression-type, or hybrid designs. While cylindrical or compression-type implants initially boast high success rates, they are prone to alveolar bone resorption under prolonged load, leading to implant failure. Furthermore, current implant technologies require selection based on bone quality, and the implantation process can easily induce high stress, causing excessive pressure on the alveolar ridge cortex and bone resorption, subsequently resulting in implant failure. When peri-ulceration occurs, current implant technologies are difficult to manage and may even necessitate implant replacement, causing secondary trauma to the patient. Summary of the Invention

[0004] To address the problems of existing dental implant technologies, which require selecting different implants based on varying bone quality, resulting in high implantation difficulty and low success rates.

[0005] This application provides a dental implant, including an implant neck and an implant root, wherein the outer surface of the implant neck is provided with a first threaded structure and the outer surface of the implant root is provided with a second threaded structure;

[0006] The thread density of the first thread structure is greater than that of the second thread structure, and the lead of the second thread structure is the same as that of the first thread structure; the maximum outer diameter of the first thread structure is less than or equal to the maximum outer diameter of the second thread structure.

[0007] Furthermore, the first thread structure and the second thread structure are single-start threads or multi-start threads.

[0008] Furthermore, the included angle between adjacent threads of the first thread structure is less than 90°.

[0009] Furthermore, the lead of the first thread structure and the second thread structure is greater than 0.8 mm.

[0010] Furthermore, the tooth depth of the first thread structure is less than or equal to 0.5 mm.

[0011] Furthermore, the tooth depth of the first thread structure is 0.05mm-0.1mm.

[0012] Furthermore, the second thread structure has a tooth height of 0.3mm-1.2mm and a tooth width of 0.1mm-0.5mm.

[0013] Furthermore, the root of the plant has a conical structure, and the taper angle of the conical structure ranges from 3° to 15°.

[0014] Furthermore, the second threaded structure is provided with a self-tapping groove, which extends in a spiral shape along the axial direction of the root of the plant.

[0015] Furthermore, the number of self-tapping grooves is set according to the maximum diameter of the dental implant:

[0016] When the maximum diameter of the dental implant is less than 5.0 mm, the number of self-tapping grooves is one or two;

[0017] When the maximum diameter of the dental implant is greater than or equal to 5.0 mm, the number of self-tapping grooves is at least four.

[0018] Implementing the embodiments of this application has the following beneficial effects:

[0019] The dental implant of this application achieves multiple advantages through the combined design of the first and second thread structures, consistent lead, shallow thread depth, conical root, and self-tapping groove. These advantages include stability in the early stages of implantation, smooth insertion, reduced bone tissue damage, simplified treatment of surrounding inflammation, and adaptability to different bone conditions. This significantly improves the implantation success rate and the convenience of clinical application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 is a structural schematic diagram of a dental implant according to an embodiment of this application;

[0022] Figure 2 is a cross-sectional view of Figure 1;

[0023] Figure 3 is an enlarged view of the implant neck structure in the cross-sectional view of the dental implant in Figure 2;

[0024] Figure 4 is a schematic diagram of the maximum outer diameter of the first and second threaded structures of the dental implant according to an embodiment of this application;

[0025] Figure 5 is a cross-sectional view of the dental implant and an enlarged view of the threaded portion of the embodiment of this application;

[0026] Figure 6 is a schematic diagram of the taper angle of the implant root of the dental implant in an embodiment of this application;

[0027] Figure 7 is a schematic diagram of the self-tapping groove setup when the maximum diameter of the dental implants in the embodiments of this application is different.

[0028] In the figure, the corresponding reference numerals are: 1 for the implant neck, 11 for the first threaded structure, 2 for the implant root, 21 for the second threaded structure, 22 for the self-tapping groove, and 3 for the screw receiving hole. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "upper," "lower," "inner," "outer," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or regarding the vertical, perpendicular, or gravitational direction of the component itself. These terms are used only for the convenience of describing this application and for 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 limitations on this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0031] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation,” “setup,” and “connection” appearing herein should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can indicate that one component is directly attached to another component or that one component is attached to another component via an intermediate component; they can refer to the internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. A feature described in one embodiment herein may be applied alone or in combination with other features to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0032] The following describes a dental implant provided in an embodiment of this application with reference to Figures 1-7, including an implant neck 1 and an implant root 2. The outer surface of the implant neck 1 is provided with a first threaded structure 11, and the outer surface of the implant root 2 is provided with a second threaded structure 21.

[0033] The thread density of the first thread structure 11 is greater than that of the second thread structure 21, and the lead of the second thread structure 21 is the same as that of the first thread structure 11; the maximum outer diameter D1 of the first thread structure 11 is less than or equal to the maximum outer diameter D2 of the second thread structure 21.

[0034] Specifically, the implant neck 1 and implant root 2 are integrally formed. The outer surface of the implant neck 1 has a first threaded structure 11, which is a dense thread design with a high thread density. This design utilizes the hydrophilic principle, enabling rapid integration with the cortical bone in the early stages of implantation and providing good initial stability. The outer surface of the implant root 2 has a second threaded structure 21, which is a sparse thread design with a low thread density. The second threaded structure 21 has the same rotation direction as the first threaded structure 11, ensuring smooth connection. The lead of the second threaded structure 21 is the same as that of the first threaded structure 11, ensuring good connection between the dense and sparse threads during implantation. The sparse thread design makes the implant insertion smoother, preventing problems such as jamming or inability to be inserted. The large lead increases the implantation speed and avoids adverse effects such as bone necrosis and prolonged operation time, which negatively impact the patient's implantation experience. The maximum outer diameter of the first threaded structure 11 is less than or equal to the maximum outer diameter of the second threaded structure 21, which helps avoid cortical bone compression during implantation, thereby reducing the risk of implantation inflammation or even implantation failure.

[0035] As can be understood, thread density can be interpreted as the number or tightness of threads within a given length. It reflects the spacing between threads: the smaller the thread spacing, i.e., the shorter the distance between adjacent threads, the greater the thread density; conversely, the larger the thread spacing, the smaller the thread density.

[0036] Furthermore, the first thread structure 11 and the second thread structure 21 are single-start or multi-start threads. Single-start threads are suitable for situations requiring high screwing accuracy and stability, while multi-start threads can improve screwing efficiency and reduce operation time, making them suitable for scenarios requiring rapid implantation.

[0037] In some possible implementations, the first thread structure 11 and the second thread structure 21 can employ the same thread type, either single-start or multi-start, or different thread types, such as a single-start thread for the first thread structure and a multi-start thread for the second thread structure, to meet different bone conditions and clinical needs. For example, a single-start dense thread design can be used at the implant neck 1 to provide greater initial stability; a multi-start sparse thread design can be used at the implant root 2 to improve insertion efficiency and adaptability.

[0038] In some other possible implementations, the first thread structure 11 and the second thread structure 21 may both be trapezoidal threads or triangular threads, or different thread shapes may be used, such as the first thread structure 11 being a trapezoidal thread and the second thread structure 21 being a triangular thread.

[0039] Further, as shown in Figure 2, the included angle between adjacent threads of the first thread structure 11 is A, where angle A is the angle between the lower edge of the previous thread and the upper edge of the adjacent next thread. Preferably, A is less than 90° to increase the contact area between the thread and the bone tissue, improving initial stability. An included angle between adjacent threads of a close-knit thread is less than 90°, allowing the first thread structure 11 to better grip the bone tissue during insertion, reducing the risk of slippage or loosening, thereby enhancing the initial stability of the implant. In some possible embodiments, the included angle between adjacent threads of the first thread structure 11 can be 50°, 60°, 70°, 80°, etc.

[0040] Furthermore, the lead of the second thread structure 21 is the same as that of the first thread structure 11, and the lead is greater than or equal to 0.8 mm. The design of the second thread structure 21 having a lead greater than or equal to 0.8 mm from the first thread structure 11 allows the implant to advance a greater distance with each rotation during insertion, thereby improving insertion efficiency, reducing operation time, and lowering the risk of bone tissue damage or osteonecrosis due to excessive insertion time. The consistent lead design ensures that the first thread structure 11 and the second thread structure 21 can work together during insertion, ensuring uniform force on the implant and avoiding stress concentration or implantation difficulties caused by inconsistent leads. The dense threads provide initial stability, while the sparse threads reduce insertion resistance, making it suitable for different bone conditions.

[0041] In some possible implementations, the lead of the second thread structure 21 and the lead of the first thread structure 11 can be 0.8 mm, 0.9 mm, 1 mm, etc.

[0042] Further, as shown in Figure 3, the tooth depth of the first thread structure 11 is H1, where H1 is less than or equal to 0.5 mm. In this embodiment, the first thread structure 11 is a shallow thread design with a tooth depth of less than or equal to 0.5 mm. This design allows for better adaptation to the morphology of bone tissue during insertion, reducing local pressure on the bone and minimizing damage. In cases of peri-implantitis caused by external factors, the shallow thread can be ground down to remove infectious bacteria, thereby improving inflammatory symptoms, avoiding implant replacement, and reducing secondary trauma to the patient. In some possible implementations, the tooth depth of the first thread structure 11 is preferably 0.05 mm to 0.1 mm.

[0043] Further, as shown in Figure 5, the second thread structure 21 has a tooth height of H3, ranging from 0.3mm to 1.2mm, and a tooth width of H2, ranging from 0.1mm to 0.5mm. Preferably, the tooth width H2 ranges from 0.1mm to 0.2mm. 。 As shown in Figure 5, the tooth height H3 is the vertical distance measured from the peak diameter to the valley diameter of the external thread, usually measured on the axial section of the thread. The tooth width H2 is the minimum straight-line distance from one side of the tooth to the other on the axial section of the thread.

[0044] In this embodiment of the application, under the premise of ensuring implant performance, the higher the tooth height and the smaller the tooth width, the easier it is to screw the dental implant in. It can be easily screwed into all types of bone, and the higher the tooth height, the easier it is to integrate with the bone and the stronger the holding force, which has a better effect on the initial healing of the implant.

[0045] Furthermore, as shown in Figure 6, the implant root 2 has a conical structure with a taper angle of B, ranging from 3° to 15°. The taper angle range of the implant root 2 in this embodiment allows for smoother implant insertion, reducing operational difficulty and time. It also better adapts to the morphology of the bone tissue, enabling better stress distribution during implant insertion, reducing local pressure on the bone tissue, minimizing bone damage, and improving implant success rate.

[0046] In some possible implementations, when the maximum diameter of the dental implant is different, the taper angle of the implant root 2 can be 3°, 4°, 5°, 6°, 7°, 9°, 12°, etc.

[0047] The synergistic design of the conical structure with the first threaded structure 11 and the second threaded structure 21 allows the implant to balance initial stability and insertion efficiency during insertion. The conical structure provides greater initial stability, while the combination of the first threaded structure 11 and the second threaded structure 21 reduces insertion resistance, making it suitable for different bone conditions.

[0048] Furthermore, the second threaded structure 21 is provided with a self-tapping groove 22, which extends spirally along the axial direction of the implant root 2. The design of the self-tapping groove 22 enhances the self-tapping performance of the dental implant, making the implant insertion smoother and reducing insertion resistance. The spiral design allows the dental implant to better cut bone tissue during insertion.

[0049] The synergistic design of the conical structure of the implant root 2, the second thread structure 21, and the self-tapping groove 22 enables the implant to better adapt to the morphology of the bone tissue during the screwing process, reducing damage to the bone tissue, while improving the self-tapping performance, the smoothness of screwing, and the screwing efficiency.

[0050] In some possible implementations, the number of self-tapping grooves 22 is determined based on the maximum diameter of the dental implant: when the maximum diameter of the dental implant is less than 5.0 mm, the number of self-tapping grooves 22 is one or two; when the maximum diameter of the dental implant is greater than or equal to 5.0 mm, the number of self-tapping grooves 22 is at least four. In some possible implementations, the maximum diameter of the dental implant can be 3.5 mm, 4.0 mm, 4.6 mm, or 5.0 mm. As shown in Figure 7, the arrangement of self-tapping grooves 22 varies depending on the maximum diameter of the dental implant. When the maximum diameter of the dental implant is 4.0 mm, the number of self-tapping grooves 22 is two; when the maximum diameter of the dental implant is 5.0 mm, the number of self-tapping grooves 22 is four.

[0051] Furthermore, the dental implant also has a screw receiving hole 3 inside for connection with the abutment screw (not shown).

[0052] The dental implant of this embodiment achieves multiple advantages, such as stability in the early stage of implantation, smooth insertion, reduced bone tissue damage, simplified treatment of peri-inflammatory inflammation, and adaptability to different bone conditions, through the combined design of the first thread structure 11 and the second thread structure 21, consistent lead, shallow thread depth, conical root, and self-tapping groove. This significantly improves the implantation success rate and the convenience of clinical application.

[0053] Obviously, the embodiments described above are merely some of the embodiments in this specification, and not all of them. Based on the embodiments in this specification, those skilled in the art can make other variations or modifications without creative effort, and all such variations should fall within the scope of protection of the embodiments in this specification.

[0054] Other embodiments of the embodiments disclosed herein will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the embodiments thereof that follow the general principles of the embodiments thereof and include common knowledge or customary techniques in the art not disclosed in the embodiments thereof. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the embodiments thereof are indicated by the following claims.

[0055] It should be understood that the embodiments described herein are not limited to the precise structures already described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from their scope. The scope of the embodiments described herein is limited only by the appended claims.

Claims

1. A dental implant, characterized in that, The implant includes a neck (1) and a root (2). The outer surface of the neck (1) is provided with a first thread structure (11), and the outer surface of the root (2) is provided with a second thread structure (21). The thread density of the first thread structure (11) is greater than that of the second thread structure (21), and the lead of the second thread structure (21) is the same as that of the first thread structure (11). The maximum outer diameter of the first thread structure (11) is less than or equal to the maximum outer diameter of the second thread structure (21).

2. The dental implant according to claim 1, characterized in that, The first thread structure (11) and the second thread structure (21) are single-threaded or multi-threaded.

3. The dental implant according to claim 2, characterized in that, The included angle between adjacent threads of the first thread structure (11) is less than 90°.

4. The dental implant according to claim 1, characterized in that, The lead of the first thread structure (11) and the second thread structure (21) is greater than or equal to 0.8 mm.

5. The dental implant according to claim 1, characterized in that, The tooth depth of the first thread structure (11) is less than or equal to 0.5 mm.

6. The dental implant according to claim 5, characterized in that, The tooth depth of the first thread structure (11) is 0.05mm-0.1mm.

7. The dental implant according to claim 1, characterized in that, The second thread structure (21) has a tooth height of 0.3mm-1.2mm and a tooth width of 0.1mm-0.5mm.

8. The dental implant according to claim 1, characterized in that, The root of the plant (2) is a conical structure, and the taper angle of the conical structure is in the range of 3°-15°.

9. The dental implant according to claim 1, characterized in that, The second threaded structure (21) is provided with a self-tapping groove (22), which extends in a spiral shape along the axial direction of the root of the plant (2).

10. The dental implant according to claim 9, characterized in that, The number of self-tapping grooves (22) is set according to the maximum diameter of the dental implant: when the maximum diameter of the dental implant is less than 5.0 mm, the number of self-tapping grooves (22) is one or two; when the maximum diameter of the dental implant is greater than or equal to 5.0 mm, the number of self-tapping grooves (22) is at least four.

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