Dental implant abutment and dental implant assembly comprising same

Abstract

The utility model relates to the field of medical instruments in the department of stomatology, in particular to a dental implant abutment and a dental implant assembly comprising the same. The dental implant abutment comprises an abutment body, an abutment head and an abutment mounting piece, and the abutment head and the abutment mounting piece are connected with the two ends of the abutment body respectively; the surface of one side, facing the abutment head, of the abutment main body is a mounting surface, a mounting channel is formed in the abutment main body, the mounting channel is obliquely arranged relative to the vertical direction of the mounting surface, the abutment mounting piece can penetrate through the mounting channel to be connected with an implant, one end of the abutment head is connected with the mounting surface, and the other end of the abutment head is used for being connected with a dental crown. According to the sectional type dental implant abutment, the defects that when an implant is obliquely implanted, the space between directional sites of teeth is limited, and the dental implant abutment is inconvenient to mount are overcome, the surface of the dental implant abutment is prevented from being broken, and the structural integrity of the dental implant abutment is ensured. And the processing difficulty can be reduced, so that the processing cost is reduced.

Description

Technical Field

[0001] This application relates to the field of dental medical devices, and particularly to a dental implant abutment and a dental implant assembly including the same. Background Art

[0002] Due to the aging of the population, although traditional complete dentures can meet the basic needs of most edentulous patients, for cases of severe alveolar ridge resorption, especially edentulous mandibles, there are often many problems such as poor retention, limited pronunciation, poor functional recovery, and poor comfort. The rapid development of implant technology has provided more possibilities for the restoration of edentulous patients. Implant-supported overdentures and implant-fixed prostheses can greatly improve the retention and stability of dentures, thus more effectively restoring the chewing efficiency of patients, meeting their psychological needs, and improving their quality of life. Currently, implant restoration has become an ideal treatment method for edentulous patients.

[0003] The basic structure of the traditional composite abutment system is mainly divided into three parts: the crown denture connection section on the abutment, the gingiva-penetrating part, and the implant connection section. The implant is a structure implanted into the bone tissue, acting as a natural tooth root to undertake functions such as support and retention. The abutment is the part located above the implant, passing through the gingiva and exposed in the oral cavity. It is a key structure connecting the upper crown denture connection section and the lower implant.

[0004] However, when installing the traditional implant composite abutment, the direction and site limitations are very large. When performing implant restoration for edentulous jaws and avoiding anatomical structures with inclined implant insertion, in order to allow the central screw to pass through the screw channel in the middle of the composite abutment, the upper part or the lower gingiva-penetrating part of the abutment is usually broken so that the screw channel can be set in the middle of the abutment. This destroys the integrity of the abutment, resulting in a reduction in the overall structural strength of the abutment. Consequently, it greatly increases the difficulty of clinical operability and the stability of restoration, causing mechanical complications of the implant. Summary of the Invention

[0005] Aiming at the above problems of the prior art, the purpose of this application is to solve the defect that the direction and site limitations of the implant composite abutment during installation are very large, resulting in the need to break the surface of the composite abutment, thus reducing the overall structural strength of the abutment.

[0006] To solve the above problems, the present application provides an implant abutment and an implant assembly including the same. The implant abutment is used to connect an implant and a dental crown. The implant abutment includes an abutment body, an abutment head, and an abutment mounting member. The abutment head and the abutment mounting member are respectively connected to two ends of the abutment body. One side surface of the abutment body facing the abutment head is a mounting surface. An installation channel is provided inside the abutment body. The installation channel is inclined with respect to the vertical direction of the mounting surface. The abutment mounting member can pass through the installation channel and be connected to the implant. One end of the abutment head is connected to the mounting surface, and the other end of the abutment head is used to connect to the dental crown.

[0007] Preferably, there is an included angle α between the extending direction of the installation channel and the vertical direction of the mounting surface, and the included angle α is in the range of 10° ≤ α ≤ 35°.

[0008] Preferably, the abutment body is provided with a connection hole. The connection hole is located on the mounting surface. The abutment head can be embedded into the connection hole for connection with the abutment body.

[0009] The connection hole communicates with the installation channel.

[0010] Preferably, an external thread structure is provided on the outer wall surface of the side where the abutment head is embedded into the connection hole, and an internal thread structure is provided on the inner wall surface at the corresponding position of the connection hole. The internal thread structure is adapted to the external thread structure for connecting the abutment body and the abutment head.

[0011] Preferably, a convex platform structure is provided on the outer wall surface of the abutment head. The convex platform structure extends along the radial direction of the abutment head. A concave step is provided on the mounting surface. The concave step is adapted to the convex platform structure. The concave step is formed on the inner wall surface of the connection hole, and along the setting direction of the mounting surface, the cross-sectional dimension of the concave step is larger than the cross-sectional dimension of the connection hole.

[0012] Preferably, along the radial direction of the abutment head, the cross-sectional dimension of the convex platform structure is the same as the cross-sectional dimension of the concave step.

[0013] Preferably, the convex platform structure is arranged around the outer wall surface of the abutment head along the axial direction of the abutment head.

[0014] And / or, the number of the convex platform structures is multiple, and the multiple convex platform structures are arranged at intervals in sequence along the axial direction of the abutment head.

[0015] Preferably, a groove structure is provided on the outer wall surface of the head of the abutment, and the groove structure is adapted to the snap structure on the crown. The groove structure is recessed along the radial direction of the head of the abutment towards its axis for connecting with the crown.

[0016] Preferably, a connecting member for connecting with the crown is provided on the head of the abutment, and the connecting member is a triangular nut, a hexagonal nut or an octagonal nut.

[0017] A dental implant assembly includes an implant, a crown and the dental implant abutment as described in any one of the above. The crown is connected to the implant through the dental implant abutment.

[0018] Due to the above technical solution, the dental implant abutment and the dental implant assembly including the same of the present application have the following beneficial effects:

[0019] By setting the dental implant abutment in a segmented manner and providing an installation channel in the main body of the abutment for the abutment installation member to pass through, when the main body of the abutment is installed on the implant, the abutment installation member can be first inclined and implanted into the installation channel to realize its installation inside the main body of the abutment, thereby realizing the fixation of the main body of the abutment and the implant. Then, the head of the abutment is installed on the main body of the abutment to prepare for the crown to be covered on the dental implant abutment. Therefore, this segmented dental implant abutment solves the defect that when the implant is inclined and implanted, the space limitation between the tooth direction sites is not convenient for the installation of the dental implant abutment, and also avoids the surface breakage and damage of the dental implant abutment, ensuring the integrity of the structure of the dental implant abutment. Moreover, the segmented dental implant abutment can also reduce the processing difficulty and thus reduce the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the present application, the drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is a schematic structural view of the dental implant abutment provided by an embodiment of the present application.

[0022] Figure 2 is an exploded view of the dental implant abutment provided by an embodiment of the present application.

[0023] Figure 3 is an installation schematic view of the dental implant abutment provided by an embodiment of the present application.

[0024] Figure 4It is a schematic structural diagram of a base body and a base head provided by an embodiment of the present application.

[0025] Figure 5 It is Figure 4 an enlarged view of part A in

[0026] Figure 6 It is Figure 4 an enlarged view of part B in

[0027] Figure 7 It is a schematic structural diagram of a second handle carrying the installation of a base head and a base body provided by an embodiment of the present application.

[0028] Figure 8 It is Figure 7 an enlarged view of part C in

[0029] Figure 9 It is a schematic structural diagram of a second handle carrying a base head provided by an embodiment of the present application.

[0030] Among them, the reference numerals are explained as follows: dental implant abutment 100, base body 11, mounting surface 111, mounting channel 112, connection hole 113, recessed step 114, nut 115, internal thread structure 116, base head 12, boss structure 121, groove structure 122, coupling member 123, external thread structure 124, base mounting member 13, first handle 200, through hole 21, screwdriver 300, second handle 400, gingival penetration height L. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying 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 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 shall fall within the protection scope of the present application.

[0032] As used herein, "one embodiment" or "an embodiment" refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Moreover, the terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0033] As shown Figures 1-9 There is provided an implant abutment 100 for connecting an implant and a dental crown, and the implant is for implanting into an alveolar bone. Among them, the implant abutment 100 includes an abutment body 11, an abutment head 12, and an abutment mounting member 13. The abutment head 12 and the abutment mounting member 13 are respectively connected to two ends of the abutment body 11. One side surface of the abutment body 11 facing the abutment head 12 is a mounting surface 111. An installation channel 112 is provided inside the abutment body 11. The installation channel 112 is inclined with respect to the vertical direction of the mounting surface 111. The abutment mounting member 13 can pass through the installation channel 112 and be connected to the implant. Specifically, in this embodiment, when the implant abutment 100 is implanted on the implant, the mounting surface 111 of the abutment body 11 is flush with the occlusal surface of the tooth. There is a certain included angle α between the installation channel 112 in the abutment body 11 and the vertical direction of the mounting surface 111. In this way, the abutment mounting member 13 can be obliquely implanted into the installation channel 112 and move along the extending direction of the installation channel 112, and move to one end of the abutment body 11 facing the implant for connection with the implant. One end of the abutment head 12 is connected to the mounting surface 111, and the other end of the abutment head 12 is for connecting with the dental crown.

[0034] By setting the dental implant abutment 100 to be segmented and providing an installation channel 112 in the interior of the abutment body 11 for the abutment installation member 13 to pass through, when the abutment body 11 is installed on the implant, the abutment installation member 13 can be first inclined and implanted into the installation channel 112 to achieve its installation inside the abutment body 11, thereby realizing the fixation of the abutment body 11 and the implant. Then, the abutment head 12 is installed on the abutment body 11 to prepare for the crown to be covered on the dental implant abutment 100. Therefore, this segmented dental implant abutment 100 solves the defect that when the implant is inclined and implanted, the spatial limitation between the tooth direction sites is not convenient for the installation of the dental implant abutment 100, and also avoids the surface breakage and damage of the dental implant abutment 100, ensuring the integrity of the structure of the dental implant abutment 100. Moreover, the segmented dental implant abutment 100 can also reduce the processing difficulty and thus reduce the processing cost.

[0035] Therefore, as Figure 3 shown, in this embodiment, the installation of the dental implant abutment 100 includes the following steps: First, use the first handle 200 to place the abutment body 11 at the corresponding position of the implant, and then use the first handle 200 to realize the fixed connection between the abutment body 11 and the implant; Second, the screwdriver 300 drives the abutment installation member 13, and after passing through the through hole 21 on the first handle 200 and the installation channel 112 in sequence, the abutment installation member 13 is placed inside the abutment body 11 to realize the connection between the abutment body 11 and the abutment installation member 13, and the connection between the abutment installation member 13 and the implant; Finally, use the second handle 400 to install the abutment head 12 on the abutment body 11 to complete the assembly of the dental implant abutment 100. For the subsequent crown installation, it belongs to the prior art and will not be elaborated here.

[0036] Preferably, the included angle α is in the range of 10° ≤ α ≤ 35°, preferably α = 17° or α = 30°. The design of the included angle α allows the abutment installation member 13 to adapt to different inclination angles of the implant, enabling the dental implant abutment 100 to be flexibly installed on the inclined implant, thus solving the installation problem caused by the inclination of the implant.

[0037] At the same time, a nut 116 is also provided at one end of the abutment body 11 close to the implant for connecting with the abutment installation member 13. Therefore, as Figure 7 shown, the gingival penetration height L of the dental implant abutment 100 is limited between 1 - 4 mm, preferably 1.5 mm and 3.5 mm. The gingival penetration height L refers to the distance between the installation surface 111 and the highest point of the nut 116 when the dental implant abutment 100 is implanted on the implant. The specific gingival penetration height L can be set as needed according to the actual situation.

[0038] As Figure 2As shown, the abutment body 11 is provided with a connection hole 113. The connection hole 113 is located on the mounting surface 111. One end of the abutment head 12 can be embedded into the connection hole 113 for connection with the abutment body 11. Moreover, the connection hole 113 communicates with the installation channel 112. By adopting the connection method of embedding the abutment head 12 into the connection hole 113, the connection stability between the abutment head 12 and the abutment body 11 can be enhanced, and the risk of loosening or displacement can be reduced.

[0039] As Figure 5 shown, an external thread structure 121 is provided on the outer wall surface of one side where the abutment head 12 is embedded into the connection hole 113, and an internal thread structure 114 is provided on the inner wall surface at the corresponding position of the connection hole 113. The internal thread structure 114 is adapted to the external thread structure 121 for the connection between the abutment body 11 and the abutment head 12. The thread structure can provide a stronger connection force, ensure a more firm connection between the abutment head 12 and the abutment body 11, and reduce loosening or displacement under the biting force. Moreover, the threaded connection also enables the abutment head 12 and the abutment body 11 to be accurately aligned during the installation process, improving the installation accuracy.

[0040] As Figure 6 shown, a boss structure 122 is further provided on the outer wall surface of the abutment head 12. The boss structure 122 extends along the radial direction of the abutment head 12, and a recessed step 115 is provided on the mounting surface 111. The recessed step 115 is adapted to the boss structure 122. The recessed step 115 is formed on the inner wall surface of the connection hole 113 and recesses from the mounting surface 111 toward the side away from the abutment head 12. The design of the boss structure 122 can play a limiting role in the installation connection between the abutment body 11 and the abutment head 12, preventing the abutment head 12 from being screwed in not in place or too deep.

[0041] Moreover, along the setting direction of the mounting surface 111, the cross-sectional dimension of the recessed step 115 is larger than that of the connection hole 113, so that the boss structure 122 can cover the gap of the connection hole 113 facing the abutment head 12, preventing bacteria from invading the inside of the abutment body 11 through the gap of the thread structure.

[0042] In addition, after the boss structure 122 is embedded into the recessed step 115, it is flush with the mounting surface 111, reducing the possibility of bacteria accumulation, helping to maintain oral hygiene, and reducing the infection risk.

[0043] Furthermore, along the radial direction of the abutment head 12, the cross-sectional dimensions of the boss structure 122 and the recessed step 115 are the same, ensuring that the boss structure 122 and the recessed step 115 can be accurately aligned, reducing the error during the installation process, improving the installation accuracy, and also enhancing the reliability of the connection between the two.

[0044] In this embodiment, the boss structure 122 is disposed around the outer wall surface of the base head 12 along the axial direction of the base head 12.

[0045] In other embodiments, the number of the boss structures 122 can also be set to be multiple, and the multiple boss structures 122 are arranged at intervals in sequence along the axial direction of the base head 12. The specific structural form of the boss structure 122 can be set as required.

[0046] As Figure 4 、 Figure 7 、 Figure 9 shown, a groove structure 123 is further provided on the outer wall surface of the base head 12. The groove structure 123 is adapted to the buckle structure on the dental crown. The groove structure 123 is recessed along the radial direction of the base head 12 toward its axial direction for connecting with the dental crown. The provision of the groove structure 123, on the one hand, facilitates the second handle 400 to be adapted to the groove structure 123 by using the installation structure inside it, and is convenient for the second handle 400 to carry the base head 12 and install it on the base head 12. Moreover, the coupling member 124 on the base head 12 that is connected to the dental crown is rotationally matched with the groove inside the second handle 400, so that the base head 12 can be screwed in under force when installed; on the other hand, it can also cooperate with the buckle structure inside the dental crown to realize the rapid installation of the base head 12 and the dental crown.

[0047] Preferably, the coupling member 124 is a triangular nut, a hexagonal nut or an octagonal nut, and can be specifically set as required.

[0048] In this embodiment, since the dental implant abutment 100 is a segmented structure, the flexibility and wide applicability of the dental implant abutment 100 in use are enhanced. Specifically:

[0049] When the dental implant abutment 100 is used as a single-tooth abutment, that is, when only one tooth needs to be implanted, a relatively high base head 12 needs to be selected to ensure that the top end of the base head 12 is flush with the occlusal surface of the tooth to ensure normal chewing requirements of humans.

[0050] When the dental implant abutment 100 is used as a multi-tooth abutment, that is, when multiple teeth need to be implanted, a relatively short base head 12 needs to be selected. Because after multiple teeth are implanted, a bridge structure (not shown in the figure) needs to be used to connect and fix the multiple dental implant abutments 100, and the bridge itself has a certain height. Therefore, in order to ensure that the top end of the abutment head is flush with the occlusal surface of the tooth, only a lower base head 12 can be selected.

[0051] Therefore, the abutment head 12 with different specifications and sizes can be selectively combined on the abutment body 11 according to the actual situation of the tooth, or the abutment body 11 with the installation channel 112 of different inclination angles can be selected on the implant according to the actual situation, which enhances the flexibility and wide applicability of the dental implant abutment 100.

[0052] This embodiment also provides a dental implant assembly, which includes an implant, a dental crown and the above-mentioned dental implant abutment 100. The dental crown is connected to the implant through the dental implant abutment 100 to meet the needs of tooth implantation.

[0053] The above description has fully disclosed the specific embodiments of the present application. It should be noted that any changes made by those skilled in the art to the specific embodiments of the present application do not depart from the scope of the claims of the present application. Accordingly, the scope of the claims of the present application is not limited to the foregoing specific embodiments.

Claims

1. A dental implant abutment, characterized in that: The dental implant abutment is used to connect an implant and a dental crown. The dental implant abutment includes an abutment body, an abutment head and an abutment mounting member. The abutment head and the abutment mounting member are respectively connected to two ends of the abutment body. The surface of the abutment body facing the abutment head is a mounting surface. A mounting channel is provided inside the abutment body. The mounting channel is inclined relative to the vertical direction of the mounting surface. The abutment mounting member can pass through the mounting channel and be connected to the implant. One end of the abutment head is connected to the mounting surface, and the other end of the abutment head is used to be connected to the dental crown.

2. The dental implant abutment according to claim 1, characterized in that: An angle α is provided between the extension direction of the installation channel and the vertical direction of the installation surface, and the angle α is in the range of 10°≤α≤35°.

3. The dental implant abutment according to claim 1, characterized in that: The base body is provided with a connecting hole, the connecting hole is located on the mounting surface, and the base head can be embedded in the connecting hole for connecting with the base body; The connecting hole is communicated with the mounting channel.

4. The dental implant abutment according to claim 3, characterized in that: An external thread structure is provided on the outer wall surface of one side where the base head is embedded in the connecting hole, and an internal thread structure is provided on the inner wall surface at the corresponding position of the connecting hole. The internal thread structure and the external thread structure are adapted to each other for connecting the base body and the base head.

5. The dental implant abutment according to claim 3, characterized in that: A boss structure is provided on the outer wall surface of the base head, and the boss structure extends along the radial direction of the base head, and a recessed step is provided on the mounting surface, the recessed step is adapted to the boss structure, the recessed step is formed on the inner wall surface of the connecting hole, and along the setting direction of the mounting surface, the cross-sectional dimension of the recessed step is greater than the cross-sectional dimension of the connecting hole.

6. The dental implant abutment according to claim 5, characterized in that: Along the radial direction of the base head, the cross-sectional dimension of the boss structure is the same as the cross-sectional dimension of the recessed step.

7. The dental implant abutment according to claim 5, characterized in that: The boss structure is disposed on the outer wall surface of the base head along the axial direction of the base head; And / or, there are multiple boss structures, and the multiple boss structures are arranged in sequence and spaced apart along the axial direction of the base head.

8. The dental implant abutment according to claim 1, characterized in that: A groove structure is provided on the outer wall surface of the base head, the groove structure is matched with the buckle structure on the crown, and the groove structure is recessed along the radial direction of the base head toward its axial direction for connection with the crown.

9. The dental implant abutment according to claim 1, characterized in that: A connecting piece connected to the dental crown is arranged on the head of the base, and the connecting piece is a triangular nut, a hexagonal nut or an octagonal nut.

10. A dental implant assembly, characterized in that: The dental implant assembly comprises an implant, a dental crown and the dental implant abutment according to any one of claims 1 to 9, wherein the dental crown is connected to the implant through the dental implant abutment.

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