Split type angle composite abutment, abutment assembly and dental implant assembly

Abstract

The utility model relates to a split type angle composite abutment, an abutment assembly and an implant tooth assembly, and belongs to the technical field of oral implant teeth. The split type angle composite abutment comprises an angle abutment main body and an abutment connecting part, the lower end of the angle abutment main body is used for being connected with an implant; an angle deflection part is arranged at the upper end of the angle abutment main body, and the central axis of the angle deflection part intersects with the central axis of the angle abutment main body; the abutment connecting part is detachably arranged on the angle deflection part; the abutment connecting part is used for being connected with a dental crown prosthesis. According to the technical scheme provided by the utility model, as a novel split type angle composite abutment, the abutment connecting part can be conveniently replaced and upgraded, and rapid connection of different dental crown prostheses is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of angle composite base, specifically to a kind of split angle composite base, belong to oral implant tooth technical field.The utility model further relates to a kind of split composite base assembly, the utility model further relates to a kind of implant tooth assembly. BACKGROUND

[0002] With the popularity of implant tooth, traditional implant tooth generally applies straight base and angle composite base as the transition structure between implant and dental crown prosthesis.

[0003] In the closest prior art for patent literature of application number "CN202322723287.8" discloses a kind of for implant tooth repair composite base technical scheme, base connecting part and angle base body are integrally designed, the whole angle base is fixed on implant by fastener, when due to oral structure changes or dental crown prosthesis needs to be replaced, if new dental crown prosthesis and original angle composite base do not match, original angle composite base needs to be replaced as a whole, overall workload is larger;The technical scheme provided in the present application, by the base connecting part and the angle base body are designed into the split structure design of detachable, when facing the above situation, only need to replace base connecting part, can meet the replacement requirement, reduce replacement cost and workload.

[0004] Therefore, how to provide a kind of split angle composite base, it can conveniently replace and upgrade base connecting part, realize the quick connection of different dental crown prosthesis, is the technical problem that the person skilled in the art is urgently solved. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the above prior art, the purpose of the utility model is to conveniently replace and upgrade base connecting part, realize the quick connection of different dental crown prosthesis.

[0006] According to the first embodiment of the utility model, a kind of split angle composite base is provided:

[0007] A kind of split angle composite base, comprising: angle base body, base connecting part;The lower end of the angle base body is used to connect with implant;The upper end of the angle base body is provided with angle deflection part, the central axis of the angle deflection part intersects with the central axis of the angle base body;The base connecting part is detachably arranged on the angle deflection part;The base connecting part is used to connect with dental crown prosthesis.

[0008] Further, as a more preferred embodiment of the utility model, the base connecting part is detachably arranged on the angle deflection part by screw thread structure.

[0009] Further, as a more preferred embodiment of the utility model, the abutment connecting part is connected with the dental crown prosthesis through a thread structure.

[0010] Further, as a more preferred embodiment of the utility model, the outer side of the abutment connecting part is provided with a first anti-rotation structure, which is used to contact and limit the rotation of the dental crown prosthesis, and the bottom of the abutment connecting part is provided with a first external thread structure, which is used to be screwed with the angle deflection part.

[0011] Further, as a more preferred embodiment of the utility model, the abutment connecting part is connected with the dental crown prosthesis through a thread structure.

[0012] Further, as a more preferred embodiment of the utility model, the outer side of the abutment connecting part is provided with a first anti-rotation structure, which is used to contact and limit the rotation of the dental crown prosthesis, and the bottom of the abutment connecting part is provided with a first external thread structure, which is used to be screwed with the angle deflection part.

[0013] Further, as a more preferred embodiment of the utility model, the shaped connecting structure is one of a prism, an elliptical cylinder and a notched cylinder.

[0014] Further, as a more preferred embodiment of the utility model, the shaped connecting structure is a right prism.

[0015] Further, as a more preferred embodiment of the utility model, the shaped connecting structure is a right hexagonal prism.

[0016] Further, as a more preferred embodiment of the utility model, the shaped connecting structure is a spiral prism.

[0017] Further, as a more preferred embodiment of the utility model, the angle abutment body is provided with a first through-hole structure along the central axis thereof, the angle deflection part is provided with a second through-hole structure along the central axis thereof, the first through-hole structure and the second through-hole structure are communicated, the inner wall of the second through-hole structure is provided with a first internal thread structure which is screwed with the first external thread structure, and the inner wall of the first through-hole structure is provided with a limiting structure which is used to cooperate with the abutment fastener.

[0018] Further, as a more preferred embodiment of the utility model, the inner hole wall of the limiting structure is provided with a second internal thread structure which is screwed with the abutment fastener.

[0019] Further, as a more preferred embodiment of the utility model, the bottom outer side of the angle abutment main part is provided with a second anti-rotation structure, the second anti-rotation structure is used to cooperate with the anti-rotation structure on the implant, and the second anti-rotation structure contacts and limits the rotation of the angle abutment main part 1 relative to the implant through a shaped connecting structure.

[0020] Further, as a more preferred embodiment of the utility model, the second through-hole structure is provided with a ring-shaped inner shoulder at the transition with the first through-hole structure; when the first outer thread structure of the abutment connecting part is installed, it is completely screwed into the second through-hole structure, and the bottom of the abutment connecting part abuts on the ring-shaped inner shoulder.

[0021] Further, as a more preferred embodiment of the utility model, the ring-shaped upper end face width of the second through-hole structure is 0.5-3mm; the ring-shaped upper end face width is used to support the dental crown prosthesis.

[0022] Further, as a more preferred embodiment of the utility model, the aperture size of the second through-hole structure is greater than the aperture size of the first through-hole structure; preferably, in the projection in the direction of the central axis of the angle abutment main part, the projection of the first through-hole structure is in the projection of the second through-hole structure.

[0023] According to the second embodiment of the utility model, a split type composite abutment assembly is provided:

[0024] A split type composite abutment assembly comprises the split type angle composite abutment described above; and an abutment fastener used to connect the split type angle composite abutment with an implant.

[0025] Further, as a more preferred embodiment of the utility model, the abutment fastener comprises a fastening rod, a fastening head provided on the upper end of the fastening rod, the diameter size of the fastening head is greater than the inner hole wall size of the limiting structure, and a second outer thread structure provided on the lower end of the fastening rod, the second outer thread structure can be rotated through the second inner thread structure.

[0026] According to the third embodiment of the utility model, a dental implant assembly is provided:

[0027] A dental implant assembly comprises the split type composite abutment assembly described above, an implant used to be installed on a gum, the split type composite abutment assembly is installed on the implant through an abutment fastener, and a dental crown prosthesis used to be installed on the split type angle composite abutment, the dental crown prosthesis is installed on the split type composite abutment assembly through a dental crown fastener.

[0028] Compared with the prior art, in the technical scheme of the split type angle composite abutment provided in the application, the abutment connecting part is detachably arranged on the angle abutment body, so that the abutment connecting part can be quickly installed and conveniently replaced. The central axis of the abutment connecting part intersects with the central axis of the angle abutment body at a certain angle, so that the abutment connecting part as a functional module connected with the dental crown prosthesis can adapt to the angle requirement in different scenes. The technical scheme provided in the application is a new split type angle composite abutment, which can conveniently replace and upgrade the abutment connecting part and realize quick connection of different dental crown prostheses. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a three-dimensional view of the overall structure of the split type angle composite abutment in the embodiment of the application.

[0030] Figure 2 It is a sectional view of the overall structure of the split type angle composite abutment in the embodiment of the application.

[0031] Figure 3 It is a position schematic view of the first through hole structure and the second through hole structure of the angle abutment body in the embodiment of the application.

[0032] Figure 4 It is an enlarged schematic view of the limiting structure in the embodiment of the application.

[0033] Figure 5 It is a schematic view of the external shape structure of the angle abutment body in the embodiment of the application.

[0034] Figure 6 It is a three-dimensional structure view of the abutment connecting part in the embodiment of the application.

[0035] Figure 7 It is a three-dimensional structure view of the abutment fastener in the embodiment of the application.

[0036] Figure 8 It is a sectional structure view of the dental crown prosthesis installed in the split type angle composite abutment of the application in the embodiment of the application.

[0037] REFERENCE SIGNS:

[0038] Angle abutment body 1; angle deflection part 101; first through hole structure 102; second through hole structure 103; first internal thread structure 104; limiting structure 105; second internal thread structure 106; annular internal shaft shoulder 107; second anti-rotation structure 108; abutment connecting part 2; first anti-rotation structure 201; first external thread structure 202; fastening dental crown internal thread structure 203;

[0039] Crown prosthesis A1; Crown fastener A11; Split angle composite abutment A2; Abutment fastener A3; Fastening rod A31; Fastening head A32; Second external thread structure A33; Implant A4; Ring-shaped upper end face Z1. DETAILED DESCRIPTION

[0040] In order to enable persons skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of 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 persons skilled in the art without creative work fall within the scope of protection of the present application.

[0041] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise explicitly and specifically limited.

[0044] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable persons skilled in the art to understand and read, and are not used to limit the conditions that can be implemented by the present application, and therefore do not have technical significance. Any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0045] As Figures 1-8In the first embodiment of the utility model, a split type angle composite base is provided,

[0046] A split type angle composite base comprises an angle base body 1 and a base connecting part 2, the lower end of the angle base body 1 is used for being connected with an implant A4, the upper end of the angle base body 1 is provided with an angle deflection part 101, the central axis of the angle deflection part 101 intersects with the central axis of the angle base body 1, the base connecting part 2 is detachably arranged on the angle deflection part 101, and the base connecting part 2 is used for being connected with a crown prosthesis A1.

[0047] In the embodiment of the utility model provided in the application, the base connecting part 2 is detachably arranged on the angle base body 1, so that the purpose of quick installation and convenient replacement can be achieved. The central axis of the base connecting part 2 intersects with the central axis of the angle base body 1 at a certain angle, so that the base connecting part 2, as a functional module connected with the crown prosthesis A1, can adapt to the requirement for the angle in different scenes. The technical scheme provided by the application is a novel split type angle composite base A2, which can conveniently replace and upgrade the base connecting part 2 and realize quick connection of different crown prostheses A1.

[0048] It should be noted that the application limits and explains that the central axis of the base connecting part 2 intersects with the central axis of the angle base body 1 at a certain angle, and the intersection angle is not specifically limited; the specific intersection angle needs to be selected in combination with the oral tooth condition in the specific physical object.

[0049] Generally, the central axis of the angle deflection part 101 forms a specific included angle (such as 15°, 30°, etc.) with the central axis of the angle base body 1, and different fixed angle specifications (such as 5°, 10°, 15°, 20°, 30°, etc.) can be designed according to clinical requirements. For example, when the implant A4 is implanted at an angle inclination (such as close to the maxillary sinus or the mandibular nerve canal) due to bone volume limitation, or the natural tooth arrangement form requires the crown to be in a specific inclined direction, the angle deflection part 101 with a corresponding angle can be selected to directly compensate for the angle difference between the implant A4 and the crown, without the need for additional adjustment of the position of the implant A4.

[0050] It should be noted that the crown prosthesis A1 in the application is an external feature of the application scheme, and the implant A4 in the application is an external feature of the application scheme.

[0051] As Figures 5-6 In the embodiment of the utility model, the base connecting part 2 is detachably arranged on the angle deflection part 101 through a threaded structure.

[0052] As Figure 8In the embodiment of the utility model, the base connecting part 2 is connected with the crown prosthesis A1 through a threaded structure.

[0053] It should be noted that the threaded structure improves the installation efficiency and stability.

[0054] It should be noted that the application realizes the split structure design under the condition of meeting the installation of the crown prosthesis A1 through the innovative structure design.

[0055] As Figure 6 In the embodiment of the utility model, the outer side of the base connecting part 2 is provided with a first anti-rotation structure 201, the first anti-rotation structure 201 is used for contacting and limiting the rotation of the crown prosthesis A1, and the bottom of the base connecting part 2 is provided with a first external thread structure 202, the first external thread structure 202 is used for being screwed with the angle deflection part 101.

[0056] It should be noted that the applicant discloses a technical scheme of a crown prosthesis and an implant tooth assembly in the patent literature with the application number "CN202323416154.2", which first proposes the crown prosthesis A1 installation mode of directly arranging the crown prosthesis A1 on the base.

[0057] As Figure 6 In the embodiment of the utility model, the outer side of the base connecting part 2 is provided with a first anti-rotation structure 201, the first anti-rotation structure 201 is used for contacting and limiting the rotation of the crown prosthesis A1, and the bottom of the base connecting part 2 is provided with a first external thread structure 202, the first external thread structure 202 is used for being screwed with the angle deflection part 101.

[0058] It should be noted that in the prior art, the crown prosthesis A1 needs to be connected through the base, that is, the base is first installed on the base connecting part 2, and then the crown prosthesis A1 is installed on the base through the adhesive mode. In such an installation mode, there are problems of complicated installation steps and easy falling of the crown prosthesis A1 from the base.

[0059] It should be further noted that for the direct connection of the single crown prosthesis A1 with the base connecting part 2, the crown prosthesis A1 and the base connecting part 2 are prone to relative rotation; in the application scheme, the first anti-rotation structure 201 is introduced, and in the case that the pose of the base connecting part 2 is fixed, the first anti-rotation structure 201 can limit the circumferential freedom of the crown prosthesis A1. Then through the crown fastener A11, the movement of the crown prosthesis A1 in the axial direction is limited.

[0060] As Figure 6In the embodiment of the utility model, the inner thread structure 203 is arranged on the abutment connecting part 2 along the middle axis, and the inner thread structure 203 is used for being screwed with the crown fastener A11 of the crown prosthesis A1.

[0061] It should be noted that the crown prosthesis A1 is directly fixed on the abutment connecting part 2 through the crown fastener A11, thereby improving the fastening efficiency and effect.

[0062] Specifically, in the embodiment of the utility model, the first anti-rotation structure 201 is provided with a shaped connecting structure, and the first anti-rotation structure 201 contacts and limits the rotation of the crown prosthesis A1 through the shaped connecting structure.

[0063] It should be noted that the shaped connecting structure limits the first anti-rotation structure 201 to be not a right circular cylinder, thereby achieving the technical effect of preventing the rotation between the mutually nested sleeve and rod.

[0064] Specifically, in the embodiment of the utility model, the shaped connecting structure is one of a prism, an elliptical cylinder and a notched cylinder.

[0065] Specifically, in the embodiment of the utility model, the shaped connecting structure is a right prism.

[0066] Specifically, in the embodiment of the utility model, the shaped connecting structure is a right hexagonal prism.

[0067] Specifically, in the embodiment of the utility model, the shaped connecting structure is a spiral prism.

[0068] It should be noted that the anti-rotation effect between the crown prosthesis A1 and the abutment connecting part 2 can be achieved through the above-mentioned embodiments.

[0069] As shown in Figures 3-5 Specifically, in the embodiment of the utility model, the first through hole structure 102 is arranged on the angle abutment body 1 along the middle axis, the second through hole structure 103 is arranged on the angle deflection part 101 along the middle axis, the first through hole structure 102 and the second through hole structure 103 are communicated, the first inner thread structure 104 which is screwed with the first outer thread structure 202 is arranged on the inner wall of the second through hole structure 103, and the limiting structure 105 which is used for cooperating with the abutment fastener A3 is arranged on the inner wall of the first through hole structure 102.

[0070] It should be noted that in the prior art, the angle abutment body 1 and the abutment connecting portion 2 are integrally formed, and a hole groove for connecting with the implant A4 is specially arranged on the angle abutment body 1, and the abutment fastener A3 is connected with the implant A4 through the hole groove, thereby realizing the fixation of the angle composite abutment, but the hole groove is relatively independent and staggered with the abutment connecting portion 2, so that the hole groove needs to be additionally filled with sealing glue. In addition, in some prior art, the hole groove cuts into part of the abutment connecting portion 2, which destroys the overall structure of the abutment connecting portion 2 and reduces the structural strength.

[0071] As Figures 3-5 In the prior art, the hole groove is specially arranged on the angle abutment body 1, and the abutment fastener A3 is connected with the implant A4 through the hole groove, thereby realizing the fixation of the angle composite abutment, but the hole groove is relatively independent and staggered with the abutment connecting portion 2, so that the hole groove needs to be additionally filled with sealing glue. In addition, in some prior art, the hole groove cuts into part of the abutment connecting portion 2, which destroys the overall structure of the abutment connecting portion 2 and reduces the structural strength.

[0072] As Figures 3-5 In the prior art, the hole groove is specially arranged on the angle abutment body 1, and the abutment fastener A3 is connected with the implant A4 through the hole groove, thereby realizing the fixation of the angle composite abutment, but the hole groove is relatively independent and staggered with the abutment connecting portion 2, so that the hole groove needs to be additionally filled with sealing glue. In addition, in some prior art, the hole groove cuts into part of the abutment connecting portion 2, which destroys the overall structure of the abutment connecting portion 2 and reduces the structural strength.

[0073] It should be noted that the second internal thread structure 106 designed on the limiting structure 105 is a loss prevention design. Before installing the angle composite abutment, the abutment fastener A3 is screwed into and passes through the second internal thread structure 106, so that the abutment fastener A3 is not easy to come out of the first through-hole structure 102, which belongs to the loss prevention design. After the angle abutment body 1 is placed on the implant A4, only a special screwdriver needs to be inserted to directly rotate and tighten the abutment fastener A3, without the need to additionally pick up and place the abutment fastener A3, thereby improving the installation efficiency, increasing the convenience, and reducing the probability of affecting the dental implant operation due to improper operation during installation.

[0074] As Figures 3-5Specifically, in the embodiment of the utility model, the bottom outer side of the angle abutment main body 1 is provided with a second anti-rotation structure 108, the second anti-rotation structure 108 is used for cooperating with the anti-rotation structure on the implant A4, and the second anti-rotation structure 108 contacts and limits the rotation of the angle abutment main body 1 relative to the implant A4 through a shaped connecting structure.

[0075] It should be noted that after the implant A4 is implanted, the second anti-rotation structure 108 can effectively prevent the angle composite abutment from rotating with the implant A4.

[0076] As Figures 3-5 Specifically, in the embodiment of the utility model, the second through-hole structure 103 is provided with an annular inner shoulder 107 at the transition with the first through-hole structure 102; when the first outer thread structure 202 of the abutment connecting part 2 is installed, it is completely screwed into the second through-hole structure 103, and the bottom of the abutment connecting part 2 abuts on the annular inner shoulder 107.

[0077] It should be noted that the annular inner shoulder 107 plays a certain supporting role for the abutment connecting part 2.

[0078] Specifically, in the embodiment of the utility model, the annular upper end surface Z1 of the second through-hole structure 103 has a width of 0.5-3mm; the width of the annular upper end surface Z1 is used to support the crown prosthesis A1.

[0079] It should be noted that the annular upper end surface Z1 can play a certain supporting role for the crown prosthesis A1, so that the abutment connecting part 2 mainly plays a connecting and anti-rotation role, and the external force generated by the crown prosthesis A1 during occlusion directly acts on the annular upper end surface Z1, that is, the angle abutment main body 1 bears the daily occlusion force, reduces the additional stress influence on the abutment connecting part 2, and improves the durability of the entire angle composite abutment.

[0080] Specifically, in the embodiment of the utility model, the hole diameter size of the second through-hole structure 103 is greater than the hole diameter size of the first through-hole structure 102.

[0081] It should be noted that the hole diameter size of the second through-hole structure 103 is greater than the hole diameter size of the first through-hole structure 102, which facilitates the abutment fastener A3 to pass through the second through-hole structure 103 and enter the first through-hole structure 102.

[0082] Specifically, in the embodiment of the utility model, in the projection in the direction of the central axis of the angle abutment main body 1, the projection of the first through-hole structure 102 is in the projection of the second through-hole structure 103.

[0083] Need to explain, convenient along the angle base station body 1 axis base station fastener A3 installation operation.

[0084] According to the second embodiment of the utility model, a split type composite abutment assembly is provided:

[0085] A split type composite abutment assembly comprises the split type angle composite abutment A2; and the abutment fastener A3 for connecting the split type angle composite abutment A2 with the implant A4.

[0086] In the split type composite abutment assembly provided in the application, in addition to the first embodiment, the abutment fastener A3 is also included, which can quickly install the angle abutment body 1 on the implant A4.

[0087] As Figure 7 In the embodiment of the utility model, the abutment fastener A3 comprises a fastening rod A31, a fastening head A32 arranged at the upper end of the fastening rod A31, the diameter of the fastening head A32 is larger than the inner hole wall size of the limiting structure 105, and a second external thread structure A33 arranged at the lower end of the fastening rod A31, the second external thread structure A33 can be rotatably arranged through the second internal thread structure 106.

[0088] Need to explain, the thread outer diameter of the second external thread structure A33 is larger than the thread inner diameter of the second internal thread structure 106, so it cannot pass directly, and needs to be rotated and engaged before passing, thereby achieving the technical effect of preventing loss.

[0089] According to the third embodiment of the utility model, a dental implant assembly is provided:

[0090] A dental implant assembly comprises the split type composite abutment assembly, the implant A4 for being installed on the gum, the split type composite abutment assembly is installed on the implant A4 through the abutment fastener A3, and the crown prosthesis A1 for being installed on the split type angle composite abutment, the crown prosthesis A1 is installed on the split type composite abutment assembly through the crown fastener A11.

[0091] In the dental implant assembly provided in the application, after the implant A4 is installed, the corresponding split type composite abutment assembly can be quickly installed on the implant A4, and after the corresponding crown prosthesis A1 is obtained through positioning scanning, the installation of the crown prosthesis A1 can be quickly performed.

[0092] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A split angle composite abutment, characterized in that: include: An angled abutment body (1), an abutment connection portion (2); The lower end of the angled abutment body (1) is used to connect with the implant (A4); An angle deflection portion (101) is provided at the upper end of the angle base body (1), and the central axis of the angle deflection portion (101) intersects with the central axis of the angle base body (1); The base connection portion (2) is detachably arranged on the angle deflection portion (101); The base connection portion (2) is used to connect to the crown prosthesis (A1); Wherein, the base connection portion (2) is detachably arranged on the angle deflection portion (101) via a threaded structure; The base connection portion (2) is connected to the crown prosthesis (A1) via a threaded structure; A first anti-rotation structure (201) is provided on the outer side of the base connection portion (2), and the first anti-rotation structure (201) is used to contact the dental crown prosthesis (A1) and limit the rotation of the dental crown prosthesis (A1); The bottom of the base connection portion (2) is provided with a first external thread structure (202), and the first external thread structure (202) is used for threaded connection with the angle deflection portion (101); An internal thread structure (203) for fastening a dental crown is provided along the central axis of the base connection portion (2), and the internal thread structure (203) for fastening a dental crown is used for threaded connection with a dental crown fastener (A11) for fastening a dental crown prosthesis (A1).

2. The split angle composite abutment according to claim 1, characterized in that: The first anti-rotation structure (201) contacts and limits the rotation of the crown prosthesis (A1) through a formed connection structure.

3. The split angle composite abutment according to claim 1 or 2, characterized in that: A first through-hole structure (102) is provided on the angle base body (1) along its central axis; A second through-hole structure (103) is provided on the angle deflection portion (101) along its central axis; The first through-hole structure (102) and the second through-hole structure (103) are in communication; The inner wall of the second through hole structure (103) is provided with a first internal thread structure (104) threadedly connected to the first external thread structure (202); A limiting structure (105) is provided on the inner wall of the first through-hole structure (102), and the limiting structure (105) is used to cooperate with the base fastener (A3).

4. The split angle composite abutment according to claim 3, characterized in that: A second internal thread structure (106) threadably matched with the base fastener (A3) is provided on the inner hole wall of the limiting structure (105); A second anti-rotation structure (108) is provided on the outer side surface of the bottom of the angled abutment body (1), and the second anti-rotation structure (108) is used to cooperate with the anti-rotation structure on the implant (A4). The second anti-rotation structure (108) contacts and limits the rotation of the angled abutment body (1) relative to the implant (A4) through a formed connection structure.

5. The split angle composite abutment according to claim 4, characterized in that: An annular inner shoulder (107) is provided at the transition point between the second through-hole structure (103) and the first through-hole structure (102); When the first external thread structure (202) of the base connection part (2) is installed, it is completely screwed into the second through hole structure (103), and the bottom of the base connection part (2) abuts against the annular inner shoulder (107); The width of the annular upper end surface (Z1) of the second through-hole structure (103) is 0.5-3 mm; the width of the annular upper end surface (Z1) is used to support the dental crown prosthesis (A1); The aperture size of the second through-hole structure (103) is larger than the aperture size of the first through-hole structure (102).

6. A split composite abutment assembly, characterized in that: include: The split angled composite abutment according to claim 5; An abutment fastener (A3) is used to connect the split angled composite abutment to an implant (A4).

7. The split composite abutment assembly according to claim 6, characterized in that: The abutment fastener (A3) comprises: Fastening rod (A31); a fastening head (A32) provided at the upper end of the fastening rod (A31), wherein the diameter of the fastening head (A32) is larger than the inner hole wall size of the limiting structure (105); A second external thread structure (A33) is provided at the lower end of the fastening rod (A31), and the second external thread structure (A33) can be rotated through the second internal thread structure (106).

8. A dental implant assembly, characterized in that: include: The split composite abutment assembly according to claim 6 or 7; An implant (A4) for mounting on a gum, wherein the split composite abutment assembly is mounted on the implant (A4) via an abutment fastener (A3); A dental crown prosthesis (A1) is used to be mounted on the split angle composite base, wherein the dental crown prosthesis (A1) is mounted on the split composite base component via a dental crown fastener (A11).

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