Dental implant assembly

Abstract

The utility model relates to the technical field of oral science, and discloses a dental implant component which comprises an abutment and an implant, a threaded groove is formed in the implant, the abutment is mounted in the implant and comprises a fusiform head, a middle stud and a lower stud, a dental crown is arranged at the middle upper part of the fusiform head, the middle stud is screwed at the upper part of the threaded groove, and the lower stud is screwed at the lower part of the threaded groove. The lower stud is screwed in the threaded groove through an elastic bushing, the elastic bushing is hollow, an internal thread matched with the lower stud is arranged on the inner surface of the elastic bushing, an external thread matched with the threaded groove is arranged on the outer surface of the elastic bushing, and the length of the lower stud is 3-6 times that of the middle stud. According to the device, the abutment screw extrudes the resin to fill the gap, and the force among the three is increased, so that the stability of the implant tooth is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oral science, in particular to an oral implant, specifically a dental implant component. Background Art

[0002] Implant dentures are implants that replace natural tooth roots and are placed in the jawbone to obtain a restoration similar to a tooth-retaining support. It is a method of repairing missing teeth that uses a lower structure (usually an implant) implanted in the bone tissue to support and fix the upper dental restoration (usually an abutment and a crown). The implant is implanted in the alveolar bone and eventually fuses with the surrounding bone tissue to form a stable bone bond. The abutment is then installed on the implant, and finally the superstructure is installed on the abutment to repair missing or damaged teeth.

[0003] Implants are structures that are implanted into bone tissue to replace natural tooth roots, and they have the functions of supporting, conducting, and dispersing forces. Currently, the most commonly used materials are titanium and titanium alloys, which have good physical and chemical properties and biocompatibility, light specific gravity, high strength, non-magnetic properties, low shrinkage, high yield strength and fatigue strength. The strong oxide layer on the titanium surface makes the titanium passivated, and it can form a chemically bonded bone-binding interface with living bone tissue, ensuring the long-term presence of the implant in the bone tissue.

[0004] The abutment is the structural part of the dental implant that passes through the gums and is exposed in the oral cavity. The abutment is fixed and connected to the upper end of the implant through the central screw through the internal or external connection anti-rotation structure at its lower end, and is the attachment structure of the implant denture restoration. The material structure, passive adaptability and anti-rotation mechanical properties of the abutment are very important for the stability and functional effect of the implant denture.

[0005] There are many types of superstructures, which are generally divided into removable superstructures and fixed superstructures. Due to differences in the number of missing teeth and restoration design, etc.

[0006] In the actual operation of implant dentures, the abutment and the implant are usually connected by a simple central screw, that is, the abutment is directly screwed onto the implant. There is a gap between the abutment and the implant, and the screw is prone to loosening and breaking due to metal fatigue, which can easily affect the effect of the restoration, shorten the service life of the implant denture, and pose a great potential risk to the patient's recovery. Summary of the invention

[0007] In order to solve the problems that the current abutment and the dental implant are directly screwed together, a gap exists between the abutment and the implant, which affects the stability of the abutment and further affects the stability of the fixed crown, causing the crown to shake and affecting the occlusion of the dental implant and the stability of the teeth on both sides, a dental implant assembly is provided.

[0008] The utility model is implemented by the following technical solutions:

[0009] A dental implant component comprises a base and an implant, wherein a threaded groove is formed in the implant, and the base is installed in the implant, wherein the base comprises a fusiform head, a middle stud and a lower stud, wherein a crown is arranged in the middle and upper part of the fusiform head, the middle stud is screwed into the upper part of the threaded groove, and the lower stud is screwed into the threaded groove through an elastic bushing, wherein the elastic bushing is hollow and an inner surface is provided with an internal thread matching with the lower stud, and an outer surface of the elastic bushing is provided with an external thread matching with the threaded groove, and the length of the lower stud is 3 to 6 times the length of the middle stud.

[0010] When implemented, it includes a base and an implant, the diameter of the implant is 3.5-4.5 mm, the outer surface of the implant is rough, used to increase the connection area with the jawbone and make the connection firm, a threaded groove is opened in the implant, an abutment is installed in the implant, the diameter of the abutment is 2.2-3.2 mm, the abutment includes a fusiform head, a middle stud and a lower stud, the fusiform head, the middle stud and the lower stud are connected as a whole, or fixed in other ways;

[0011] The middle stud and the lower stud are installed in the implant, and a crown is provided in the middle and upper part of the fusiform head. The crown is installed by conventional means, which will not be described here. The middle stud is screwed on the upper part of the threaded groove. In order to prevent the elastic bushing from moving upward, the middle stud is directly connected to the implant to prevent the elastic bushing from being squeezed and protruding outward. A longitudinal pressure relief hole is opened on the base to reduce pressure and prevent excessive pressure during installation. The longitudinal pressure relief hole runs through the middle stud, and the bottom of the longitudinal pressure relief hole is connected to the elastic bushing area, and the top is connected to the outside world and is sealed after installation.

[0012] The lower stud is screwed into the threaded groove through an elastic bushing. The elastic bushing is made of resin material. The thickness of the elastic bushing is 0.15mm. The thickness of the elastic bushing is greater than the gap between the lower stud and the threaded groove. During installation, the elastic bushing is squeezed and deformed, and the ductility and deformability of the resin are used to fill the gap between the lower stud and the threaded groove, so that the lower stud is firmly installed. The elastic bushing is hollow and the inner surface is provided with an internal thread that matches the lower stud. The outer surface of the elastic bushing is provided with an external thread that matches the threaded groove. The length of the lower stud is 3 to 6 times the length of the middle stud. Specifically, the length of the lower stud is 4 times the length of the middle stud. A bow-shaped expansion groove is opened in the middle of the elastic bushing. When not installed, the inner diameter of the elastic bushing is smaller than the outer diameter of the lower stud, so that the lower stud can squeeze the elastic bushing outward after installation, compress the elastic bushing, squeeze the gap between the base and the implant, and improve stability.

[0013] When in use, the implant is firmly connected to the jawbone, the elastic bushing is screwed onto the lower stud of the abutment, and then screwed into the implant. Since the elastic bushing has a certain hardness, the middle stud is screwed onto the upper part of the implant. While the middle stud is screwed in, the lower edge of the middle stud squeezes the elastic bushing inward to push the elastic bushing to the bottom of the threaded groove, and the longitudinal pressure relief hole releases the pressure in the threaded groove. In the process of continuous tightening, the lower edge of the middle stud squeezes the elastic bushing to tighten the space between the implant and the abutment to maintain the stability of the abutment.

[0014] As another installation method, an elastic bushing is placed at the bottom of the threaded groove, and the abutment is screwed into the elastic bushing so that the lower stud of the abutment continuously squeezes the elastic bushing outward, so that the elastic bushing fills the gap between the abutment and the implant, thereby improving stability.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the dental implant assembly provided by the utility model increases the stability of the connection between the abutment and the implant by adding an elastic bushing between the abutment and the implant to form an inner surface structure of the abutment-elastic bushing-implant. The resin is squeezed through the abutment screw to fill the gap (which can increase the contact surface connection) and the force between the three is increased, thereby increasing the stability of the implant. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is represented by a sectional view of the overall structure.

[0017] Figure 2 A schematic diagram showing the structure of the base.

[0018] Figure 3 A schematic diagram showing the structure of an elastic bushing.

[0019] Figure 4 Schematic diagram showing the structure of an implant.

[0020] Figure 5 Another schematic diagram showing the structure of an elastic bushing.

[0021] In the figure: 1-base, 101-fusiform head, 102-middle stud, 103-lower stud, 2-elastic bushing, 3-implant, 4-thread groove, 5-expansion groove, 6-crown. DETAILED DESCRIPTION

[0022] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings. Example 1

[0023] A dental implant component, such as Figures 1 to 4As shown: it includes a base 1 and an implant 3, the diameter of the implant 3 is 3.5~4.5mm, the outer surface of the implant 3 is rough, which is used to increase the connection area with the jawbone and make the connection firm, a threaded groove 4 is opened in the implant 3, and the base 1 is installed in the implant 3, the diameter of the base 1 is 2.2~3.2mm, the base 1 includes a fusiform head 101, a middle stud 102 and a lower stud 103, the fusiform head 101, the middle stud 102 and the lower stud 103 are connected as a whole, or fixed in other ways;

[0024] The middle stud 102 and the lower stud 103 are installed in the implant 3. The pitch and direction of the external thread of the middle stud 102 and the external thread of the lower stud 103 are consistent. A crown is provided in the middle and upper part of the shuttle-shaped head 101. The crown is installed by existing conventional means, which will not be described in detail here. The middle stud 102 is screwed on the upper part of the threaded groove 4. In order to prevent the elastic bushing 2 from moving upward, the middle stud 102 is directly connected to the implant to prevent the elastic bushing 2 from being squeezed and protruding outward; a longitudinal pressure relief hole is opened on the base 1 for reducing pressure to prevent excessive pressure during installation. The longitudinal pressure relief hole runs through the middle stud 102, and the bottom of the longitudinal pressure relief hole is connected to the elastic bushing 2 area, and the top is connected to the outside world and is sealed after the installation is completed;

[0025] The lower stud 103 is screwed into the threaded groove 4 through the elastic bushing 2. The elastic bushing 2 is made of resin material. The thickness of the elastic bushing 2 is 0.15mm. The thickness of the elastic bushing is greater than the gap between the lower stud and the threaded groove. During installation, the elastic bushing is squeezed and deformed, and the ductility and deformability of the resin are used to fill the gap between the lower stud and the threaded groove, so that the lower stud is installed firmly. The elastic bushing 2 is hollow and the inner surface is provided with an internal thread that cooperates with the lower stud 103. The outer surface of the elastic bushing 2 is provided with an external thread that cooperates with the threaded groove 4. The pitch and direction of the external thread are consistent with those of the middle stud 102. The length of the lower stud 103 is 4 times the length of the middle stud 102, that is, the upper 1 / 5 of the threaded groove 4 in the implant 3 cooperates with the middle stud 102, and the lower 4 / 5 cooperates with the lower stud 103.

[0026] When in use, the implant 3 is firmly connected to the jawbone, the elastic bushing 2 is screwed onto the lower stud 103 of the abutment 1, and then screwed into the implant 3, the middle stud 102 is screwed onto the upper part of the implant 3, and the longitudinal pressure relief hole releases the pressure in the threaded groove 4. During the continuous tightening process, the lower edge of the middle stud 102 squeezes the elastic bushing 2 to tighten the space between the implant and the abutment to maintain the stability of the abutment. Example 2

[0027] A dental implant component, such as Figure 5As shown: a bow-shaped expansion groove 5 is opened in the middle of the elastic bushing 2. When not installed, the inner diameter of the elastic bushing 2 is smaller than the outer diameter of the lower stud 103, so that the lower stud can squeeze the elastic bushing 2 outward after installation, compress the elastic bushing 2, and tighten the gap between the base and the implant to improve stability; the rest of the structure and assembly are consistent with Example 1.

[0028] When in use, the elastic bushing 2 is squeezed to shrink the expansion groove 5, that is, the two side groove walls of the expansion groove 5 are close to each other, and the elastic bushing 2 is placed at the bottom of the threaded groove 4, so that the outer wall of the elastic bushing 2 fits flush with the inner surface of the implant, and then the abutment 1 is screwed into the elastic bushing 2, so that the lower stud 103 of the abutment 1 continuously squeezes the elastic bushing 2 outward, the expansion groove 5 opens, and the elastic bushing 2 is squeezed and deformed, so that the elastic bushing 2 fills the gap between the abutment 1 and the implant 3. When the lower stud 103 is completely immersed in the threaded groove 4, the middle stud 102 and the threaded groove 4 begin to be screwed. At this time, the pressure in the implant 3 is released through the longitudinal pressure relief hole, which is convenient for the screw-in operation. When the middle stud is completely screwed into the threaded groove 4, the abutment 1 is installed, and the stability of the abutment 1 is effectively improved. Finally, the crown 6 is installed using conventional techniques, and the implant is completed.

[0029] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dental implant assembly, comprising an abutment (1) and an implant (3), wherein a threaded groove (4) is formed in the implant (3), and the abutment (1) is installed in the implant (3), characterized in that: The base (1) comprises a shuttle-shaped head (101), a middle stud (102) and a lower stud (103); a crown is provided at the middle and upper part of the shuttle-shaped head (101); the middle stud (102) is screwed onto the upper part of the thread groove (4); the lower stud (103) is screwed into the thread groove (4) via an elastic bushing (2); the elastic bushing (2) is hollow and has an inner surface provided with an internal thread that matches the lower stud (103); the outer surface of the elastic bushing (2) is provided with an external thread that matches the thread groove; the length of the lower stud (103) is 3 to 6 times the length of the middle stud (102).

2. A dental implant assembly according to claim 1, characterized in that: The base (1) is provided with a longitudinal pressure relief hole, the longitudinal pressure relief hole passing through the middle stud (102).

3. A dental implant assembly according to claim 1, characterized in that: The elastic bushing (2) is made of resin material.

4. The dental implant assembly according to claim 1, characterized in that: The thickness of the elastic bushing (2) is 0.15 mm.

5. The dental implant assembly according to claim 1, characterized in that: The diameter of the base (1) is 2.2-3.2 mm.

6. The dental implant assembly according to claim 1, characterized in that: The implant wall has a diameter of 3.5-4.5 mm.

7. The dental implant assembly according to claim 1, characterized in that: The length of the lower stud (103) is four times the length of the middle stud (102).

8. The dental implant assembly according to claim 1, characterized in that: A bow-shaped expansion groove (5) is provided in the middle of the elastic bushing (2); in an unmounted state, the inner diameter of the elastic bushing (2) is smaller than the outer diameter of the lower stud (103).

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