Dental implant

Abstract

The application discloses a dental implant, comprising: an implant body, a top of which is provided with a mounting hole, a bottom wall of the mounting hole being provided with a boss; and an abutment, a bottom of which is inserted into the mounting hole, an outer side wall of the abutment being fitted to an inner side wall of the mounting hole, the bottom of the abutment being provided with an assembly hole, the boss being inserted into the assembly hole, and an outer side wall of the boss being fitted to an inner side wall of the assembly hole. The dental implant of the application forms two sealing interfaces between the bottom of the abutment and the mounting hole of the implant body, and further improves the sealing performance between the abutment and the implant body. The application can be applied to the field of dental implants.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of dental implants, in particular to a dental implant. BACKGROUND

[0002] A dental implant is a device that is surgically implanted into the upper or lower jawbone of a patient to replace a missing tooth. The dental implant generally comprises an implant, an abutment and a central screw. The implant is implanted into the jawbone of the patient. The top of the implant is provided with a mounting hole. The bottom of the abutment is inserted into the mounting hole of the implant. The central screw locks the abutment to the mounting hole of the implant, so that the outer sidewall of the abutment tightly fits the inner sidewall of the mounting hole, achieving a seal between the abutment and the implant. However, the sealing performance between the implant and the abutment still needs to be improved. SUMMARY

[0003] The present application aims to provide a dental implant to solve one or more technical problems in the prior art, at least to provide a beneficial alternative or create conditions.

[0004] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0005] A dental implant comprises:

[0006] an implant, the top of which is provided with a mounting hole, and the bottom wall of the mounting hole is provided with a boss;

[0007] an abutment, the bottom of which is inserted into the mounting hole, the outer sidewall of the abutment tightly fits the inner sidewall of the mounting hole, the bottom of the abutment is provided with a fitting hole, the boss is inserted into the fitting hole, and the outer sidewall of the boss tightly fits the inner sidewall of the fitting hole.

[0008] The beneficial effects of the present application are as follows: the bottom of the abutment is inserted into the mounting hole, and the outer sidewall of the abutment tightly fits the inner sidewall of the mounting hole, so that a sealing interface is formed between the outer sidewall of the abutment and the inner sidewall of the mounting hole; the boss of the bottom wall of the mounting hole is inserted into the fitting hole of the bottom of the abutment, and the outer sidewall of the boss tightly fits the inner sidewall of the fitting hole, so that another sealing interface is formed between the outer sidewall of the boss and the inner sidewall of the fitting hole; thus, two sealing interfaces are formed between the bottom of the abutment and the mounting hole of the implant, further improving the sealing performance between the abutment and the implant.

[0009] As a further improvement of the above technical scheme, the horizontal cross-sectional area of the mounting hole gradually decreases from top to bottom, and the shape of the bottom of the abutment matches the shape of the mounting hole.

[0010] The bottom of the abutment is matched with the shape of the mounting hole, and the horizontal cross-sectional area of the bottom of the abutment gradually decreases from top to bottom. When the bottom of the abutment is inserted into the mounting hole and the abutment is connected with the implant, the outer side wall of the bottom of the abutment can press the inner side wall of the mounting hole downward to improve the sealing performance between the abutment and the implant.

[0011] As a further improvement of the above technical solution, the inner side wall of the mounting hole is connected with the outer side wall of the bottom of the abutment in a Morse taper.

[0012] The outer side wall of the bottom of the abutment is connected with the inner side wall of the mounting hole in a Morse taper. The sealing performance between the abutment and the mounting hole connected in a Morse taper is good, and the mechanical stability is strong. The micro-motion of the abutment is reduced, the abutment is prevented from loosening, the bone resorption around the implant is reduced, and the long-term stability of the implant restoration is achieved.

[0013] As a further improvement of the above technical solution, the horizontal cross-sectional area of the boss gradually increases from top to bottom, and the shape of the assembly hole is matched with the shape of the boss.

[0014] The shape of the assembly hole is matched with the shape of the boss, and the horizontal cross-sectional area of the assembly hole gradually increases from top to bottom. When the boss is inserted into the assembly hole and the abutment is connected with the implant, the outer side wall of the boss can press the inner side wall of the assembly hole upward to improve the sealing performance between the abutment and the implant.

[0015] As a further improvement of the above technical solution, the outer side wall of the boss is connected with the inner side wall of the assembly hole in a Morse taper.

[0016] The outer side wall of the boss is connected with the inner side wall of the assembly hole in a Morse taper. The sealing performance between the boss and the assembly hole connected in a Morse taper is good, and the mechanical stability is strong. The micro-motion of the boss is reduced, the boss is prevented from loosening, and the sealing performance between the boss and the assembly hole is improved.

[0017] As a further improvement of the above technical solution, the outer side wall of the boss is provided with a first rotation-stopping plane, and the inner side wall of the assembly hole is provided with a second rotation-stopping plane. The first rotation-stopping plane and the second rotation-stopping plane are attached to limit the freedom of rotation of the abutment around the vertical axis.

[0018] The first rotation-stopping plane of the boss and the second rotation-stopping plane of the assembly hole are attached to limit the freedom of rotation of the abutment around the vertical axis. The abutment is prevented from rotating around the vertical axis to damage the two sealing interfaces formed between the abutment and the implant. The first rotation-stopping plane and the second rotation-stopping plane are both planes, and the sealing performance after the first rotation-stopping plane and the second rotation-stopping plane are attached is high.

[0019] As a further improvement of the above technical solution, the top surface of the boss is flush with the top of the implant.

[0020] The top surface of the boss is flush with the top of the implant, and the boss is also inserted into the assembly hole of the abutment during the process of inserting the bottom of the abutment into the mounting hole, so as to avoid the outer edge of the boss scratching the inner side wall of the assembly hole due to misalignment of the boss and the assembly hole.

[0021] As a further improvement of the above technical solution, the top surface of the boss abuts against the top wall of the assembly hole.

[0022] The top surface of the boss abuts against the top wall of the assembly hole, so that the boss and the top wall of the assembly hole form a third sealing interface, and a zigzag sealing structure is formed between the bottom of the abutment and the mounting hole of the implant, thereby improving the sealing performance between the abutment and the implant.

[0023] As a further improvement of the above technical solution, the outer edge of the boss is provided with a rounded corner.

[0024] When the bottom of the abutment is inserted into the mounting hole of the implant, the outer edge of the boss contacts the inner side wall of the assembly hole during the process of inserting the boss into the assembly hole, and the outer edge of the boss is provided with a rounded corner, so as to avoid the outer edge of the boss scratching the inner side wall of the assembly hole, thereby preventing the scratches on the inner side wall of the assembly hole from affecting the sealing performance between the boss and the assembly hole.

[0025] As a further improvement of the above technical solution, the abutment is provided with a center hole extending through the top and bottom, the center hole is in communication with the assembly hole, the top of the boss is provided with a threaded hole, and the dental implant further comprises a central screw, the central screw is arranged in the center hole, and the bottom of the central screw is connected to the threaded hole.

[0026] The central screw is connected to the threaded hole of the boss after passing through the center hole of the abutment, so that the abutment and the implant are connected together, and the pre-tightening force of the central screw causes the bottom of the abutment to abut against the mounting hole of the implant downward, so as to ensure that the two sealing interfaces between the abutment and the implant remain in a closed state. BRIEF DESCRIPTION OF DRAWINGS

[0027] The application will be further described below in conjunction with the drawings and examples;

[0028] Figure 1 is a cross-sectional view of an embodiment of the dental implant provided by the application;

[0029] Figure 2 is an exploded view of an embodiment of the dental implant provided by the application;

[0030] Figure 3 is a cross-sectional view of an embodiment of the dental implant provided by the application after being exploded;

[0031] Figure 4is a dental implant provided by the present application, and a structural schematic diagram of the implant in an embodiment is shown in the figure.

[0032] Figure 5 is a dental implant provided by the present application, and a structural schematic diagram of the implant in an embodiment is shown in the figure.

[0033] 100, implant, 110, mounting hole, 120, boss, 121, first rotation-stopping plane, 122, round corner, 123, screw hole, 200, abutment, 210, assembly hole, 211, second rotation-stopping plane, 220, center hole, 300, central screw. DETAILED DESCRIPTION

[0034] This part will describe the specific embodiments of the present application in detail, and the preferred embodiments of the present application are shown in the accompanying drawings, which serve to supplement the description in the text part of the specification and enable people to intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0035] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application.

[0036] In the description of the present application, if words such as "several" are described, the meaning is one or more, the meaning of more is two or more, greater than, less than, more than, etc. are not included in the number, and above, below, within, etc. are understood to include the number.

[0037] In the description of the present application, unless otherwise explicitly limited, the words such as setting, mounting, connecting, etc. should be understood broadly, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0038] Reference Figures 1 to 5 , the dental implant of the present application is made as follows:

[0039] The dental implant comprises an implant 100, an abutment 200, and a central screw 300.

[0040] The implant 100 is a circular truncated cone with a large top and a small bottom. The outer wall of the implant 100 is provided with external threads. The top of the implant 100 is provided with a downwardly extending mounting hole 110. The mounting hole 110 is a circular conical hole with a large top and a small bottom. The hole diameter of the mounting hole 110 gradually decreases from top to bottom. The bottom wall of the mounting hole 110 is provided with an upwardly extending boss 120. The boss 120 is a regular hexagonal truncated cone structure with a small top and a large bottom. The horizontal cross-sectional area of the boss 120 gradually increases from top to bottom. The side wall of the boss 120 has six first rotation-stopping planes 121. The top surface of the boss 120 is flush with the top of the implant 100. The top outer edge of the boss 120 is provided with a rounded corner 122 which surrounds the top outer edge of the boss 120. The top surface of the boss 120 is provided with a downwardly extending threaded hole 123. The threaded hole 123 extends downwardly into the interior of the implant 100. The axis of the threaded hole 123, the center line of the boss 120, and the axis of the mounting hole 110 are located on the same vertical line.

[0041] The bottom of the abutment 200 is a circular truncated cone structure with a large top and a small bottom. The bottom of the abutment 200 has an outer shape matching the shape of the mounting hole 110. The outer diameter of the bottom of the abutment 200 gradually decreases from top to bottom. The bottom of the abutment 200 is provided with an upwardly extending assembly hole 210. The assembly hole 210 is a regular hexagonal hole structure. The shape of the assembly hole 210 matches the shape of the boss 120. The horizontal cross-sectional area of the assembly hole 210 gradually increases from top to bottom. The side wall of the assembly hole 210 has six second rotation-stopping planes 211. The abutment 200 is provided with a center hole 220 extending through in the up-down direction. The center hole 220 is a stepped hole. The center hole 220 is divided into an upper segment and a lower segment. The hole diameter of the upper segment is larger than that of the lower segment. A chamfer is used to transition between the upper segment and the lower segment. The top of the upper segment is in communication with the outside. The bottom of the lower segment is in communication with the assembly hole 210. The hole diameter of the lower segment is smaller than that of the assembly hole 210. The axis of the center hole 220 and the center line of the assembly hole 210 are located on the same vertical line.

[0042] The bottom of the abutment 200 is inserted into the mounting hole 110 of the implant 100, the outer side wall of the bottom of the abutment 200 is fitted with the inner side wall of the mounting hole 110, the boss 120 is inserted into the assembly hole 210, the outer side wall of the boss 120 is fitted with the inner side wall of the assembly hole 210, that is, the six first rotation-stopping planes 121 of the boss 120 are fitted with the six second rotation-stopping planes 211 of the assembly hole 210 one by one, so that the freedom of rotation of the abutment 200 around the vertical axis is limited, the top surface of the boss 120 is fitted with the top wall of the assembly hole 210. The central screw 300 is connected to the screw hole 123 after passing through the center hole 220, the head of the central screw 300 abuts against the chamfer transition between the upper segment and the lower segment, and the bottom of the central screw 300 is connected to the screw hole 123, so that the bottom of the abutment 200 abuts against the mounting hole 110 of the implant 100, and the outer side wall of the bottom of the abutment 200 is connected with the inner side wall of the mounting hole 110 by the Morse taper, and the outer side wall of the boss 120 is connected with the inner side wall of the assembly hole 210 by the Morse taper. The corresponding angle of the Morse taper is generally 3° to 8°.

[0043] In some embodiments, the bottom of the abutment 200 is prismatic or cylindrical, the mounting hole 110 is a straight hole corresponding to the shape of the bottom of the abutment 200, the bottom of the abutment 200 is inserted into the mounting hole 110 in interference fit, the boss 120 is prismatic or cylindrical, the assembly hole 210 of the bottom of the abutment 200 is a straight hole corresponding to the shape of the boss 120, and the boss 120 is inserted into the assembly hole 210 in interference fit, so as to realize the sealed connection between the bottom of the abutment 200 and the mounting hole 110; or, the bottom of the abutment 200 is a cylindrical body or a circular truncated cone body, the shape of the mounting hole 110 matches the shape of the abutment 200, the outer side wall of the bottom of the abutment 200 is provided with a first external thread, the inner side wall of the mounting hole 110 is provided with a first internal thread, the first external thread is threadedly connected with the first internal thread, and the boss 120 is a cylindrical body or a circular truncated cone body, the assembly hole 210 is matched with the boss 120, so as to facilitate the rotation of the abutment 200 relative to the implant 100.

[0044] The preferred embodiments of the application are specifically described above, but the application is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A dental implant, characterized by: The implant is provided with a mounting hole in the top part, and a bottom wall of the mounting hole is provided with a boss. The base is inserted into the mounting hole, and an outer side wall of the base is fitted to an inner side wall of the mounting hole. The bottom part of the base is provided with a fitting hole, and the boss is inserted into the fitting hole, and an outer side wall of the boss is fitted to an inner side wall of the fitting hole. The horizontal sectional area of the mounting hole gradually decreases from top to bottom, and the bottom part of the base is matched with the shape of the mounting hole. The horizontal sectional area of the boss gradually increases from top to bottom, and the shape of the fitting hole is matched with the shape of the boss. The base is provided with a center hole penetrating from top to bottom, and the center hole is communicated with the fitting hole.

2. Dental implant according to claim 1, characterized in that: The top part of the boss is provided with a screw hole, and the dental implant further comprises a central screw, which is inserted into the center hole, and the bottom part of the central screw is connected to the screw hole.

3. Dental implant according to claim 1, characterized in that: The inner side wall of the mounting hole is connected with the bottom part of the base by a Morse taper.

4. The dental implant according to claim 1, characterized in that: The outer side wall of the boss is connected with the inner side wall of the fitting hole by a Morse taper.

5. The dental implant according to claim 1, characterized in that: The outer side wall of the boss is provided with a first rotation-stopping plane, and the inner side wall of the fitting hole is provided with a second rotation-stopping plane.

6. The dental implant of claim 1, wherein: The top surface of the boss is flush with the top part of the implant.

7. The dental implant according to claim 1, characterized in that: The top surface of the boss is abutted with the top wall of the fitting hole. The outer edge of the boss is provided with a round corner.

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