Clamp tool for drawing test of dental implant

Abstract

The utility model discloses a clamp tool for a dental implant pull-out test, which comprises an upper clamp and a lower clamp, the upper clamp is connected with a dental implant and is used for fixing the dental implant, and the lower clamp is used for fixing an artificial dental bone block; the lower clamp comprises an upper cover body and a lower cover body which are detachably connected, the upper cover body and the lower cover body are combined in a covering mode, a containing cavity is formed in the upper cover body and the lower cover body, a first hole is formed in the upper cover body, and a clamping part is arranged on the end face of the lower cover body; the upper clamp comprises a bolt and a scanning rod. The end, away from the bolt, of the scanning rod is provided with a second section. An artificial tooth bone block is arranged in a containing cavity of a lower clamp, a scanning rod is inserted into a first hole and assembled at the upper end of a dental implant through a bolt, during testing, an upper clamping head of a universal testing machine clamps the scanning rod, and a lower clamping head of the universal testing machine clamps a clamping part for testing, so that the problem that in the prior art, the scanning rod is clamped by a clamping part is effectively solved; the technical problem that the artificial tooth bone block is easily broken due to the fact that the universal testing machine directly clamps the artificial tooth bone block is solved, and the testing efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of testing tooling technology, and in particular to a fixture for dental implant pull-out testing. Background Technology

[0002] Pull-out force testing is a commonly used mechanical testing method to measure the tensile properties and tensile strength of materials. In the field of modern dentistry, the continuous development of implant technology provides patients with reliable and durable oral solutions. The ISO 14801 standard focuses on fatigue testing of dental implants and their prosthetic components, aiming to ensure, through systematic evaluation, that these implants can withstand diverse mechanical stresses in the oral environment, maintaining their function and stability. The principle of dental implant fatigue testing is as follows: under the ISO 14801 standard, by simulating various mechanical stresses in the oral environment, the durability and stability of the implant are systematically evaluated to ensure that it can withstand various challenges during long-term use.

[0003] In related technologies, dental implants are fixed in artificial dental bone blocks, and then pull-out force tests are performed on the dental implants to test their tensile properties and tensile strength in the use environment, in order to simulate the stress conditions of dental implants in the oral cavity.

[0004] When conducting pull-out force tests, the artificial dental bone block is held in the chuck of a universal testing machine. During the test, the chuck directly holds the artificial dental bone block, and the force applied by the chuck to the artificial dental bone block is relatively large, which may directly break the artificial dental bone block, making the test impossible to conduct. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a clamping fixture for dental implant pull-out testing, which assists in conducting dental implant pull-out force tests and avoids situations where the clamp directly grips the artificial tooth bone block and breaks it.

[0006] This utility model discloses a clamping fixture for a dental implant pull-out test. 1. It includes: an upper clamp and a lower clamp. The upper clamp is connected to the dental implant, and the lower clamp is used to fix the artificial tooth bone block. The lower clamp includes: a detachably connected upper cover and a lower cover. The upper cover and the lower cover are fitted together and form a receiving cavity inside for accommodating the artificial tooth bone block. The upper cover has a first hole, and the upper clamp passes through the first hole and is connected to the dental implant. The end face of the lower cover away from the upper cover has a clamping part.

[0007] The upper cover includes an upper cover plate and an upper cylinder. The upper cover plate covers one end of the upper cylinder. A first hole is provided in the upper cover plate. A first fixing part is provided on the side of the upper cover plate facing the lower cover. A first connecting part is provided on the inner wall of the upper cylinder.

[0008] Specifically, the first hole is located at the center of the top cover plate.

[0009] Optionally, the diameter of the dental implant is d, and the diameter of the first cavity is D, satisfying the relationship: 2d < D < 4d.

[0010] The lower cover includes a lower cover plate and a lower cylinder. The lower cover plate covers one end of the lower cylinder. The clamping part is located on the side of the lower cover plate away from the upper cover. The side of the lower cover plate facing the upper cover is provided with a second fixing part. The outer wall of the lower cylinder is provided with a second connecting part.

[0011] Specifically, the first connecting part and the second connecting part are detachably connected. The first connecting part has an internal thread, and the second connecting part has an external thread that is compatible with the internal thread.

[0012] The first retaining part is a first protruding ring, which protrudes from the side of the upper cover plate near the lower cover; the second retaining part is a second protruding ring, with multiple second protruding rings protruding from the side of the lower cover plate facing the upper cover; when the upper cover and the lower cover are closed, the position of the first protruding ring corresponds to that of the second protruding ring.

[0013] Specifically, the clamping part includes two parallel first clamping surfaces.

[0014] The upper clamp includes a bolt and a scanning rod. The scanning rod is connected to the dental implant by the bolt, and the end of the scanning rod away from the bolt has a second cutting surface.

[0015] The present invention discloses a fixture for a dental implant pull-out test, comprising: an upper fixture and a lower fixture. The upper fixture is connected to the dental implant for fixing the dental implant. During the pull-out force test, the upper clamp of the pull-out testing machine holds the upper fixture, and the lower fixture is used to fix the artificial tooth bone block. The lower clamp of the universal testing machine holds the lower fixture. The lower fixture comprises: a detachably connected upper cover and a lower cover, the upper cover and the lower cover being fitted together to form an internal cavity. The upper cover has a first hole, and the side of the lower cover away from the upper cover has a clamping part, which includes two parallel first clamping surfaces. The upper fixture comprises: a bolt and a scanning rod. The scanning rod is connected to the dental implant by the bolt, and the end of the scanning rod away from the bolt has a second tangential surface. By placing the artificial tooth bone block within the receiving cavity of the lower clamp, and providing a clamping part on the side of the lower cover away from the upper cover, the scanning rod is assembled to the upper end of the dental implant through the first hole in the upper cover, and a second cutting surface is provided at the end of the scanning rod away from the dental implant. During the test, the upper chuck of the universal testing machine clamps the second cutting surface of the scanning rod, and the lower chuck of the universal testing machine clamps the first clamping surface of the clamping part. This improves the technical problem in the prior art where the universal testing machine directly clamps the artificial tooth bone block, which easily causes the artificial tooth bone block to break, and greatly improves the testing efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any innovative effort.

[0017] Figure 1 This is a cross-sectional view of the assembly structure of the artificial tooth bone block, dental implant, and upper clamp disclosed in the embodiments of this utility model;

[0018] Figure 2 This is a schematic diagram of the fixture for dental implant pull-out testing disclosed in this embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the assembly structure of the artificial tooth bone block, dental implant, upper clamp, and lower clamp disclosed in the embodiments of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lower clamp disclosed in the embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the assembly structure of the lower cover, artificial tooth bone block, dental implant, and upper clamp disclosed in the embodiments of this utility model;

[0022] Figure 6 This is a top view of the lower cover body disclosed in the embodiment of this utility model;

[0023] Figure label:

[0024] 1. Upper clamp; 11. Scanning rod; 111. Second cutting surface; 12. Bolt; 2. Lower clamp; 21. Upper cover; 211. Upper cylinder; 212. Upper cover plate; 2121. First hole; 22. Lower cover; 221. Clamping part; 2211. First clamping surface; 222. Lower cover plate; 2221. Second retention part; 223. Lower cylinder; 2231. Second connecting part; 3. Dental implant; 31. Assembly hole; 4. Artificial tooth bone block; Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be understood that, when used in this specification and the appended claims, the terms “comprising” and “including” indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0027] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0028] It should also be further understood that the terms "and" and "or" as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.

[0029] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

[0030] Before conducting the dental implant pull-out test, a dental implant 3 is pre-prepared and embedded in the artificial tooth bone block 4. One end of the dental implant 3 is flush with the artificial tooth bone block 4, and the other end of the dental implant 3 is completely embedded in the artificial tooth bone block 4 to simulate the environment of a dental implant in the oral cavity. Figure 1 As shown, the upper end of the dental implant 3 is provided with an assembly hole 31.

[0031] A fixture for dental implant pull-out testing, such as Figure 2-5 As shown, it includes: an upper clamp 1 and a lower clamp 2. The upper clamp 1 is connected to the dental implant 3 for fixing the dental implant 3. Specifically, the upper clamp 1 is assembled into the mounting hole 31 at the upper end of the dental implant 3. The lower clamp 2 is used to fix the artificial tooth bone block 4. When performing a pull-out force test, the upper chuck of the universal testing machine holds the upper clamp 1, and the lower chuck of the universal testing machine holds the lower clamp 2.

[0032] The lower clamp 2 includes: a detachably connected upper cover 21 and a lower cover 22. The upper cover 21 and the lower cover 22 cover each other and form an internal cavity. The artificial tooth bone block 4 is placed in the cavity. The upper cover 21 is provided with a first hole 2121. When the upper cover 21 and the lower cover 22 cover each other, the position of the first hole 2121 corresponds to the dental implant 3. The upper clamp 1 passes through the first hole 2121 and is assembled into the assembly hole of the dental implant 3. The lower cover 22 has a clamping part 221 on the side of the end away from the upper cover 21. The lower chuck of the universal testing machine clamps the clamping part 221.

[0033] The upper cover 21 includes an upper cover plate 212 and an upper cylinder 211. The upper cover plate 212 covers one end of the upper cylinder 211. A first hole 2121 is provided in the upper cover plate 212. A first retaining part (not shown in the figure) is provided on the side of the upper cover plate 212 facing the lower cover 22 for fixing the upper side of the artificial tooth bone block 4. A first connecting part (not shown in the figure) is provided on the inner side wall of the upper cylinder 211. In this embodiment, the upper cover plate 212 and the upper cylinder 211 are an integrated structure.

[0034] Specifically, the first hole 2121 is located at the center of the upper cover plate 212. In this embodiment, the size of the first hole 2121 should be larger than the diameter of the dental implant 3. Let the diameter of the dental implant 3 be d and the diameter of the first hole 2121 be D, satisfying the relationship: 2d < D < 4d. The first hole 2121 should be smaller than the diameter of the upper cover plate 212. This setting can ensure that during the pull-out test, the dental implant 3 can be pulled out from the first hole 2121 without being blocked by the upper cover plate 212. Even if the dental implant 3 is tilted during the pull-out test, there will be enough space to avoid the dental implant 3 contacting the upper cover plate 212 and affecting the accuracy of the test data. During this process, the artificial tooth bone block 4 is blocked by the upper cover plate 212 and will not be pulled out.

[0035] The lower cover 22 includes a lower cover plate 222 and a lower cylinder 223. The lower cover plate 222 covers one end of the lower cylinder 223. The clamping part 221 is provided on the side of the lower cover plate 222 away from the upper cover 21. The side of the lower cover plate 222 facing the upper cover 21 is provided with a second fixing part 2221, as shown in the figure. The outer wall of the lower cylinder 223 is provided with a second connecting part 2231. The inner diameter of the lower cylinder 223 is larger than the diameter of the artificial tooth bone block 4, so that the artificial tooth bone block 4 can be inserted into the lower cylinder 223.

[0036] The first connecting part and the second connecting part 2231 are detachably connected. Specifically, the first connecting part is an internal thread, and the second connecting part 2231 is an external thread adapted to the internal thread. The upper cylinder 211 and the lower cylinder 223 can be detachably connected by the cooperation of the internal thread and the external thread.

[0037] For details, please refer to Figure 6 The second retaining part 2221 is a second convex ring, which protrudes from the side of the lower cover plate 222 facing the upper cover 21. The second convex ring is used to fix the lower side of the artificial tooth bone block 4. There can be multiple second convex rings, which are concentrically arranged. The outer ring of the second convex ring protrudes from the lower cover plate 222 by a greater height than the inner ring of the second convex ring. The first retaining part is a first convex ring, which protrudes from the side of the upper cover plate 212 near the lower cover 22. The first convex ring is used to fix the upper side of the artificial tooth bone block 4. There can be multiple first convex rings, which are concentrically arranged. The outer ring of the first convex ring... The height of the protruding ring from the upper cover plate 212 is greater than the height of the first protruding ring from the inner ring to the upper cover plate 212. When the upper cover 21 and the lower cover 22 are closed together, the position of the first protruding ring corresponds to that of the second protruding ring. By setting the first and second protruding rings, the upper and lower sides of the artificial tooth bone block 4 can be fixed to ensure that the position of the artificial tooth bone block 4 is always in the middle of the receiving cavity, so as to avoid the position of the artificial tooth bone block 4 moving due to the force of the dental implant 3 during the pull-out test, resulting in inaccurate test data. By setting multiple first protruding rings and multiple second protruding rings, artificial tooth bone blocks 4 of different sizes can be positioned, increasing the adaptability of the fixture for the dental implant pull-out test.

[0038] The shapes of the first and second convex rings are adapted to the shape of the artificial tooth bone block 4. In this embodiment, the artificial tooth bone block 4 is cylindrical, and the first and second convex rings are circular. The dimensions of the first and second convex rings are adapted to the diameter of the artificial tooth bone block 4 so as to facilitate the engagement of the artificial tooth bone block 4 with the first and second convex rings.

[0039] Specifically, the clamping part 221 includes two parallel first clamping surfaces 2211, which facilitates the clamping part 221 to be clamped by the lower chuck of the universal testing machine. In this embodiment, the clamping part 221, the lower cover plate 222, and the lower cylinder 223 are an integral structure, which is convenient for processing.

[0040] The upper clamp 1 includes a bolt 12 and a scanning rod 11. The scanning rod 11 is connected to the assembly hole 31 of the dental implant 3 via the bolt 12. The end of the scanning rod 11 away from the bolt 12 has a second cut surface 111, which facilitates clamping and testing by the upper chuck of the universal testing machine. In this embodiment, the bolt 12 and the scanning rod 11 are conventional bolts 12 and scanning rods 11 that are compatible with the dental implant 3, which can increase the adaptability of the fixture for the dental implant pull-out test.

[0041] In a specific embodiment, a pre-prepared dental implant 3 is embedded inside an artificial dental bone block 4. The dental implant 3 is vertically embedded at the center of the artificial dental bone block 4, with one end of the dental implant 3 flush with the upper surface of the artificial dental bone block 4. The height of the artificial dental bone block 4 is greater than the length of the dental implant 3, so that the other end of the dental implant 3 is completely embedded in the artificial dental bone block 4. The diameter of the artificial dental bone block 4 is set to be 5 times the diameter of the dental implant 3, and the diameter of the first hole 2121 is set to be 3 times the diameter of the dental implant 3. One end of the dental implant 3 is provided with an assembly for connecting the upper clamp 1. Before testing, the artificial tooth bone block 4 is inserted into the inner side of the second retention part 2221 of the lower cover 22, that is, the inner side of the second convex ring. The second convex ring can position the artificial tooth bone block 4. The upper cover 21 is then placed on top of the lower cover 22. The internal thread of the upper cylinder 211 is engaged with the external thread of the lower cylinder 223. The upper cylinder 211 and the lower cylinder 223 are then tightened until the upper cover plate abuts against the upper side of the artificial tooth bone block. The upper side of the artificial tooth bone block 4 is then engaged with the inner side of the first convex ring. Subsequently, the scanning rod 11 is assembled into the assembly hole 31 of the dental implant 3 using bolts 12. During testing, the upper chuck of the universal testing machine is used to hold the second cut surface 111 of the scanning rod 11, and the lower chuck of the universal testing machine is used to hold the first clamping surface 2211 of the clamping part 221. The test can then begin.

[0042] The present invention discloses a fixture for a dental implant pull-out test, comprising: an upper fixture and a lower fixture. The upper fixture is connected to the dental implant for fixing the dental implant. During the pull-out force test, the upper clamp of the pull-out testing machine holds the upper fixture, and the lower fixture is used to fix the artificial tooth bone block. The lower clamp of the universal testing machine holds the lower fixture. The lower fixture comprises: a detachably connected upper cover and a lower cover, the upper cover and the lower cover being fitted together to form an internal cavity. The upper cover has a first hole, and the side of the lower cover away from the upper cover has a clamping part, which includes two parallel first clamping surfaces. The upper fixture comprises: a bolt and a scanning rod. The scanning rod is connected to the dental implant by the bolt, and the end of the scanning rod away from the bolt has a second tangential surface. By placing the artificial dental bone block within the receiving cavity of the lower clamp, and providing a clamping part on the side of the lower cover away from the upper cover, the scanning rod is assembled to the upper end of the dental implant through the first hole in the upper cover. The end of the scanning rod away from the dental implant has a second cutting surface. During testing, the upper chuck of the universal testing machine clamps the second cutting surface of the scanning rod, and the lower chuck of the universal testing machine clamps the first clamping surface of the clamping part. This improves the technical problem in the prior art where the universal testing machine directly clamps the artificial dental bone block, which easily causes the artificial dental bone block to break, and improves the testing efficiency.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent modifications or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fixture for a dental implant pull-out test, characterized in that, include: Upper clamp and lower clamp. The upper clamp is connected to the dental implant, and the lower clamp is used to fix the artificial tooth bone block. The lower clamp includes: a detachably connected upper cover and a lower cover, the upper cover and the lower cover are fitted together and form a receiving cavity for accommodating artificial tooth bone blocks, the upper cover is provided with a first hole, the upper clamp passes through the first hole and is connected to the dental implant, and the end face of the lower cover away from the upper cover is provided with a clamping part.

2. The fixture for dental implant pull-out testing according to claim 1, characterized in that, The upper cover includes an upper cover plate and an upper cylinder. The upper cover plate covers one end of the upper cylinder. A first hole is provided in the upper cover plate. A first retaining part is provided on the side of the upper cover plate facing the lower cover. A first connecting part is provided on the inner wall of the upper cylinder.

3. The fixture for dental implant pull-out testing according to claim 2, characterized in that, The first hole is located at the center of the top cover plate.

4. The fixture for dental implant pull-out testing according to claim 3, characterized in that, The diameter of the dental implant is d, and the diameter of the first cavity is D, satisfying the relationship: 2d < D < 4d.

5. The fixture for dental implant pull-out testing according to claim 2, characterized in that, The lower cover includes a lower cover plate and a lower cylinder. The lower cover plate covers one end of the lower cylinder. The clamping part is located on the side of the lower cover plate away from the upper cover. The side of the lower cover plate facing the upper cover is provided with a second fixing part. The outer side wall of the lower cylinder is provided with a second connecting part.

6. The fixture for dental implant pull-out testing according to claim 5, characterized in that, The first connecting part and the second connecting part are detachably connected. The first connecting part has an internal thread, and the second connecting part has an external thread that is compatible with the internal thread.

7. The fixture for dental implant pull-out testing according to claim 5, characterized in that, The first retaining part is a first protruding ring, which protrudes from the side of the upper cover plate near the lower cover; the second retaining part is a second protruding ring, with multiple second protruding rings protruding from the side of the lower cover plate facing the upper cover; when the upper cover and the lower cover are closed, the position of the first protruding ring corresponds to that of the second protruding ring.

8. The fixture for dental implant pull-out testing according to claim 1, characterized in that, The clamping part includes two first clamping surfaces arranged in parallel.

9. The fixture for dental implant pull-out testing according to claim 1, characterized in that, The upper clamp includes: The device consists of a bolt and a scanning rod. The scanning rod is connected to the dental implant via the bolt, and the end of the scanning rod away from the bolt has a second cut surface.

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