Implant bridge fatigue testing device and method

Abstract

The present invention discloses an implant bridge fatigue test device and method. The implant bridge fatigue test device is applied to the implant bridge, comprising: a base connected to the implant bridge; a loading mechanism; a pad installed on the loading mechanism, the loading mechanism pressurizes the implant bridge through the pad, and the position where the implant bridge is connected to the base is staggered with the position of the pad. The implant bridge fatigue test device and method of the present invention fixes the implant bridge on the base, and uses the loading mechanism to pressurize the implant bridge through the pad. Since the implant bridge is fixed at the patient's tooth loss position through a dental implant, the part of the implant bridge supported by the dental implant has better pressure bearing performance. Therefore, in the fatigue test device, the position where the implant bridge is connected to the base is staggered with the position of the pad, so as to perform fatigue testing on the position of the implant bridge with poor pressure bearing performance, thereby obtaining a relatively accurate fatigue test result. The present invention can be applied to the field of dental implant bridges.

Description

Technical Field

[0001] The invention relates to the field of dental implant bridges, and in particular to an implant bridge fatigue testing device and method. Background Art

[0002] Implant bridges use implants implanted in the jawbone or alveolar socket as the support and retention end of the fixed bridge, and then make a fixed bridge to repair the dentition defect.

[0003] At present, manufacturers and testing institutes perform fatigue tests on dental implants to evaluate their mechanical properties. However, implant bridges lack special fatigue testing devices and fatigue testing methods. Since the stress conditions of implant bridges in actual use are obviously different from those of dental implants, if the fatigue testing devices and methods of dental implants are directly applied, the fatigue test results of implant bridges will be inaccurate. Summary of the invention

[0004] The purpose of the present invention is to provide a fatigue testing device and method for an implant bridge, so as to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The technical solutions adopted to solve the above technical problems are:

[0006] A fatigue testing device for implant bridges, which is applied to implant bridges, comprises:

[0007] A base connected to the planting bridge;

[0008] Loading mechanism;

[0009] A cushion block is installed on the loading mechanism, and the loading mechanism applies pressure to the implant bridge through the cushion block. The position where the implant bridge connects to the base is staggered with the position of the cushion block.

[0010] The beneficial effects of the present invention are as follows: the implant bridge is fixed on the base, and a loading mechanism is used to apply pressure to the implant bridge through a pad. Since the implant bridge is fixed at the patient's tooth loss position through a dental implant, the portion of the implant bridge supported by the dental implant has better pressure-bearing performance. Therefore, in a fatigue testing device, the position where the implant bridge is connected to the base is staggered with the position of the pad, so as to facilitate fatigue testing of the position of the implant bridge with poor pressure-bearing performance, thereby obtaining more accurate fatigue test results.

[0011] As a further improvement of the above technical solution, the loading mechanism is provided with an adjusting member whose position can be adjusted up and down, and the cushion block is arranged at the bottom of the adjusting member.

[0012] As a further improvement of the above technical solution, the loading mechanism includes:

[0013] a driving rod that moves in an up-and-down direction;

[0014] A pressure rod is connected to the driving rod, the pressure rod is provided with a screw hole which passes through the pressure rod from top to bottom, the adjusting member is provided with an external thread which cooperates with the screw hole, and the bottom of the adjusting member extends out from below the pressure rod.

[0015] As a further improvement of the above technical solution, the loading mechanism is further provided with a translation block, the translation block moves in a horizontal direction, and the adjustment member is connected to the translation block in an up-and-down sliding manner.

[0016] As a further improvement of the above technical solution, the implant bridge is a dental bridge type implant bridge, and a pyramid-shaped protrusion is provided at the bottom of the pad;

[0017] Alternatively, the implantation bridge is a rod-clamp type implantation bridge, and a semicircular keyway is provided at the bottom of the cushion block.

[0018] A method for testing fatigue of an implant bridge is implemented based on the above-mentioned device for testing fatigue of an implant bridge, and comprises the following steps:

[0019] Connecting the implant bridge with a connecting piece, and bonding the connecting piece to the base;

[0020] staggering the position of the cushion block and the position of the connecting piece;

[0021] Perform stress fatigue testing.

[0022] As a further improvement of the above technical solution, before performing the pressure fatigue test, a plurality of the connecting members are arranged to connect the implant bridge and the base, so that at least one end of the implant bridge is suspended in the air, and the cushion block is abutted against the suspended end of the implant bridge.

[0023] As a further improvement of the above technical solution, before the pressure fatigue test, the implant bridge is designed into a dental arch shape.

[0024] As a further improvement of the above technical solution, before the pressure fatigue test, the two ends of the implant bridge are suspended in the air, and two cushion blocks are arranged to abut against the two ends of the implant bridge respectively.

[0025] As a further improvement of the above technical solution, the connecting member is replaced by an implant, a base, and a connecting screw, and the implant bridge and the base are connected to the implant by using the connecting screw, and the implant is bonded to the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0027] Figure 1This is a structural schematic diagram of an embodiment of the implant bridge fatigue testing device provided by the present invention;

[0028] Figure 2 This is a structural schematic diagram of another angle of one embodiment of the implant bridge fatigue testing device provided by the present invention;

[0029] Figure 3 The figure is a schematic diagram of an exploded view of an embodiment of the implant bridge fatigue testing device provided by the present invention.

[0030] 100. implant bridge; 200. base; 300. loading mechanism; 310. adjusting member; 311. external thread; 320. driving rod; 330. pressing rod; 331. screw hole; 400. spacer block; 500. connecting member. DETAILED DESCRIPTION

[0031] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, if there are words such as "several", it means one or more, "more" means more than two, greater than, less than, exceed, etc. are understood as not including the number, and above, below, within, etc. are understood as including the number.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 3 As shown, the implant bridge fatigue testing device of the present invention is implemented as follows:

[0036] The implant bridge fatigue testing device is applied to the implant bridge 100 , and includes a base 200 , a loading mechanism 300 , and a cushion block 400 .

[0037] The base 200 is connected to the implant bridge 100, and the loading mechanism 300 is located above the base 200. The loading mechanism 300 moves in the up and down directions. The pad 400 is installed at the bottom of the loading mechanism 300. The loading mechanism 300 drives the pad 400 to move downward to press the top of the implant bridge 100, and applies pressure to the implant bridge 100 through the pad 400.

[0038] The position of the base 200 supporting the implant bridge 100 is staggered with the position of the cushion block 400 .

[0039] The implant bridge 100 is fixed on the base 200, and the loading mechanism 300 is used to apply pressure to the implant bridge 100 through the pad 400. Since the implant bridge 100 is fixed at the patient's tooth loss position through the dental implant, the pressure-bearing performance of the part of the implant bridge 100 supported by the dental implant is better. Therefore, in the fatigue testing device, the position where the implant bridge 100 is connected to the base 200 is staggered with the position of the pad 400, so as to facilitate fatigue testing of the position of the implant bridge 100 with poor pressure-bearing performance, thereby obtaining more accurate fatigue test results.

[0040] In some embodiments, the loading mechanism 300 is provided with an adjusting member 310 , the adjusting member 310 can adjust its position in the up and down directions, and the cushion block 400 is installed at the bottom of the adjusting member 310 .

[0041] The top heights of the implant bridge 100 at different positions are different. The height of the cushion block 400 is adjusted by the adjusting member 310 so that the cushion block 400 adjusts its height according to the top position of the implant bridge 100 to ensure that the loading mechanism 300 applies sufficient pressure to the implant bridge 100 through the cushion block 400.

[0042] In some embodiments, the loading mechanism 300 also includes a driving rod 320 and a pressure rod 330. The driving rod 320 is driven by a linear driving device, and the driving rod 320 reciprocates up and down. The pressure rod 330 is connected to the bottom of the driving rod 320. The pressure rod 330 is provided with a screw hole 331 that passes through the up and down directions. The outer wall of the adjusting member 310 is provided with an external thread 311, and the external thread 311 matches the screw hole 331. The adjusting member 310 is inserted into the screw hole 331, and the bottom of the adjusting member 310 passes through the bottom end of the screw hole 331 and extends to the bottom of the pressure rod 330.

[0043] By rotating the adjusting member 310 to rotate the external thread 311 relative to the screw hole 331 , the height of the adjusting member 310 is changed, and the cushion block 400 at the bottom of the adjusting member 310 moves accordingly, making the height adjustment of the cushion block 400 more convenient.

[0044] In some embodiments, the loading mechanism 300 is further provided with a translation block, which moves in the left-right direction, and the adjustment member 310 is connected to the translation block in an up-and-down sliding manner.

[0045] The position of the adjusting member 310 in the horizontal direction is adjusted by the translation block so that the adjusting member 310 is adjusted to a proper position.

[0046] In some embodiments, the implant bridge 100 is a dental bridge-type implant bridge, and a pyramid-shaped protrusion is correspondingly provided at the bottom of the spacer block 400 .

[0047] The pyramidal protrusion at the bottom of the pad 400 matches the concave cavity at the top of the dental bridge-type implant bridge, increasing the contact area between the bottom of the pad 400 and the top of the dental bridge-type implant bridge, thereby reducing the pressure of the pad 400 on the dental bridge-type implant bridge and preventing the pad 400 from damaging the surface of the dental bridge-type implant bridge.

[0048] In some embodiments, the implant bridge 100 is a rod-clamp type implant bridge, and a semicircular keyway is correspondingly provided at the bottom of the cushion block 400 .

[0049] The semicircular keyway at the bottom of the pad 400 cooperates with the connecting rod of the rod-clamp type implant bridge to increase the contact area between the bottom of the pad 400 and the rod-clamp type implant bridge, thereby reducing the pressure of the pad 400 on the rod-clamp type implant bridge and preventing the pad 400 from damaging the connecting rod surface of the rod-clamp type implant bridge.

[0050] Specifically, refer to Figures 1 to 3 As shown, the implant bridge fatigue testing device is applied to the implant bridge 100 .

[0051] In this embodiment, the implant bridge 100 is a dental bridge type implant bridge. The implant bridge 100 is in the shape of a dental arch. The implant bridge 100 as a whole is in the shape of a dental arch with the middle portion bulging forward. The implant bridge 100 is provided with a plurality of mounting holes for connection.

[0052] There are multiple connecting members 500, and the connecting members 500 include a base substitute and a connecting screw. A connecting screw hole is set on the top of the base substitute. The bottom end shape of the mounting hole of the implant bridge 100 matches the top shape of the base substitute. The multiple connecting members 500 are installed one by one at the bottom ends of the multiple mounting holes of the implant bridge 100. The top of the connecting member 500 cooperates with the bottom end of the mounting hole. The end of the connecting screw passes through the mounting hole from above and is screwed into the connecting screw hole of the base substitute. The head of the connecting screw abuts against the bottom end of the mounting hole, so that the base substitute is fixed in the mounting hole of the implant bridge 100 by the connecting screw.

[0053] Thus, a plurality of connectors 500 are installed on the implant bridge 100. In this embodiment, referring to Figure 2 As shown, three connecting members 500 are installed on the left part of the implant bridge 100 , and one connecting member 500 is installed on the right part of the implant bridge 100 .

[0054] Furthermore, the implant, the abutment, and the connecting screw can replace the connecting piece 500. The abutment and the bottom end of the mounting hole of the implant bridge 100 can be matched. The connecting screw passes through the mounting hole and the abutment and is screwed into the implant to connect the implant, the abutment, and the implant bridge 100 together. A fatigue test is performed on the dental implant and the implant bridge after they are matched to simulate the mechanical properties of the connection state between the implant bridge and the dental implant under real conditions.

[0055] Of course, the planting bridge 100 also has the form of a rod-type planting bridge, a Malone bridge, etc. The rod-type planting bridge includes a plurality of mounting seats and a plurality of connecting rods, and each two adjacent mounting seats are connected by connecting rods, and each mounting seat is provided with a mounting hole. The plurality of connecting members 500 are mounted in the mounting holes of the plurality of mounting seats one by one, and the connection method of the connecting member 500 and the mounting seat can refer to the above scheme.

[0056] The implant bridge fatigue testing device includes a base 200 , a loading mechanism 300 , a cushion block 400 , and a connecting piece 500 .

[0057] A plurality of fixing holes are provided on the base 200, and the positions of the plurality of fixing holes correspond one-to-one to the positions of the plurality of connecting members 500. The plurality of connecting members 500 of the implant bridge 100 are inserted one-to-one into the plurality of fixing holes, and then resin is filled in the fixing holes. After the resin is cured, the connecting members 500 are fixed in the fixing holes, and then the implant bridge 100 is fixed on the top of the base 200.

[0058] The loading mechanism 300 includes a linear drive device, a drive rod 320 , a pressure rod 330 , and an adjusting member 310 .

[0059] The loading mechanism 300 is arranged above the base 200, and the linear driving device is connected to the driving rod 320. The linear driving device drives the driving rod 320 to move up and down. The pressure rod 330 is connected to the bottom end of the driving rod 320. The pressure rod 330 extends along the left and right directions. The left and right ends of the pressure rod 330 extend symmetrically on the left and right sides of the driving rod 320. The left and right ends of the pressure rod 330 are respectively provided with screw holes 331 that pass through along the up and down directions.

[0060] The adjusting member 310 is cylindrical, and an outer wall of the adjusting member 310 is provided with an external thread 311 , which matches the screw hole 331 , and the adjusting member 310 is inserted into the screw hole 331 . The bottom end of the adjusting member 310 passes through the screw hole 331 and extends below the pressure rod 330 .

[0061] Two adjusting members 310 are provided, and the two adjusting members 310 are installed in the two screw holes 331 in a one-to-one correspondence.

[0062] The pad 400 is installed at the bottom end of the adjusting member 310, and the shape of the bottom of the pad 400 is set according to the type of the implant bridge 100. If the implant bridge 100 is a dental bridge type implant bridge, a pyramidal protrusion is set at the bottom of the pad 400. If the implant bridge 100 is a rod clamp type implant bridge, a semicircular keyway is set at the bottom of the pad 400.

[0063] The loading mechanism 300 moves downward so that the bottom of the pad 400 abuts against the top of the implant bridge 100. By adjusting the position of the base 200 or rotating the loading mechanism 300 to change the position of the adjusting member 310, the positions of the two pads 400 are staggered with the position of the connecting member 500 to prevent the pad 400 from being located above the connecting member 500.

[0064] In this embodiment, since the implant bridge 100 is in the shape of a dental arch, the left and right ends of the implant bridge 100 extend backward, and the two pads 400 are located above the two ends of the implant bridge 100. After the loading mechanism 300 is started, the two pads 400 are respectively abutted against the top of the two ends of the implant bridge 100.

[0065] The implant bridge fatigue testing method of the present invention is described in the following embodiments:

[0066] The implant bridge fatigue test method is implemented based on the implant bridge fatigue test device as described above, and comprises the following steps:

[0067] The implant bridge 100 is connected to the connecting piece 500 , and then the connecting piece 500 is bonded to the base 200 , so that the implant bridge 100 is fixed on the top of the base 200 .

[0068] The position of the cushion block 400 is staggered with the position of the connecting member 500 by adjusting the loading mechanism 300 .

[0069] The loading mechanism 300 is started, and the loading mechanism 300 applies pressure to the implant bridge 100 through the cushion block 400 to perform a pressure fatigue test.

[0070] The implant bridge 100 is fixed to the base 200 by the connecting piece 500, and the loading mechanism 300 is used to apply pressure to the implant bridge 100 through the pad 400. Since the implant bridge 100 is fixed at the patient's tooth loss position by the dental implant, the pressure-bearing performance of the part of the implant bridge 100 supported by the dental implant is better. Therefore, the position of the connecting piece 500 of the implant bridge 100 and the position of the pad 400 are staggered in the fatigue testing device to facilitate fatigue testing of the position of the implant bridge 100 with poor pressure-bearing performance, thereby obtaining more accurate fatigue test results.

[0071] In some embodiments, multiple connectors 500 are provided to connect the implant bridge 100 to the base 200, and the end of the implant bridge 100 is suspended in the air. The position of the cushion block 400 is adjusted so that the cushion block 400 is pressed on the suspended end of the implant bridge 100, and then a pressure fatigue test is performed.

[0072] The structural strength of the end of the implant bridge 100 is lower than that of the rest of the parts, and the connection between the implant bridge 100 and the connector 500 is also a part with low structural strength. When the suspended end of the implant bridge 100 is subjected to pressure, the implant bridge 100 tilts toward the end, thereby forming a greater pressure on the connection between the implant bridge 100 and the connector 500. Performing a pressure fatigue test on the suspended end of the implant bridge 100 can effectively and accurately verify the mechanical properties of the weak points of the implant bridge 100.

[0073] In some embodiments, the implant bridge 100 is designed to be in the shape of a dental arch, and after the implant bridge 100 is fixed to the base 200 via the connector 500, a pressure fatigue test is performed.

[0074] The dental arch-shaped implant bridge 100 has a larger span, and the structural strength of the end of the implant bridge 100 is relatively low. A pressure fatigue test is performed on the dental arch-shaped implant bridge 100 to verify the mechanical properties of the weak points of the implant bridge 100. Moreover, the dental arch-shaped implant bridge 100 is similar to a real dental arch. Users generally use the posterior molars to chew harder foods. The end of the dental arch-shaped implant bridge 100 corresponds to the position of the posterior molars, which can more accurately verify the mechanical properties of the implant bridge 100.

[0075] In some embodiments, the two ends of the dental arch-shaped implant bridge 100 are suspended in the air, two pads 400 are arranged to abut against the two ends of the implant bridge 100 in a one-to-one correspondence, and then a pressure fatigue test is performed.

[0076] The dental arch-shaped implant bridge 100 is similar to a real dental arch. Users generally use the posterior molars to chew harder foods. The ends of the dental arch-shaped implant bridge 100 correspond to the positions of the posterior molars, which can more accurately verify the mechanical properties of the implant bridge 100. Two pads 400 are used to apply pressure to the two ends of the implant bridge 100, which helps to balance the force on the left and right sides of the implant bridge 100, making the pressure fatigue test closer to the situation where users use the molars on both sides to chew harder food.

[0077] In some embodiments, the connector 500 is replaced by an implant, an abutment, and a connecting screw, and the implant bridge 100 and the abutment are connected to the implant by the connecting screw, and then the implant is bonded to the top of the base 200 .

[0078] When placing the implant bridge 100 into the user's mouth, an implant needs to be implanted into the user's toothless position, and the implant bridge 100 is installed based on the implant. After replacing the connecting piece 500 with the implant, a base, and connecting screws, a pressure fatigue test is performed to more closely restore the actual usage of the implant bridge 100 and to accurately verify the mechanical properties of the implant bridge 100.

[0079] Specifically, the implant bridge fatigue test method is implemented based on the implant bridge fatigue test device as described above, and the implant bridge fatigue test method includes the following steps:

[0080] The implant bridge 100 is designed to be in the shape of a dental arch, and a mounting hole for mounting a connector 500 or a base is reserved in the middle of the implant bridge 100 .

[0081] Install the connecting piece 500 into the mounting hole, and then glue the connecting piece 500 to the base 200; or use connecting screws to connect the base and the implant to the mounting hole of the implant bridge 100, and then glue the implant to the base 200; fix the implant bridge 100 on the top of the base 200.

[0082] A plurality of connectors 500 or a combination of a plurality of implants, abutments, and connecting screws are provided, so that the plurality of connectors 500 or the plurality of combination mechanisms connect the implant bridge 100 to the top of the base 200, and the two ends of the implant bridge 100 are suspended in the air.

[0083] Two cushion blocks 400 are arranged on the loading mechanism 300 , and the two cushion blocks 400 are made to abut against two ends of the implant bridge 100 in a one-to-one correspondence by adjusting the loading mechanism 300 or the base 200 .

[0084] The loading mechanism 300 is started, and the loading mechanism 300 applies pressure to the implant bridge 100 through the cushion block 400 to perform a pressure fatigue test.

[0085] The loading mechanism 300 performs a compression test on the implant bridge 100 using a dynamic fatigue test with the following test parameters: a frequency of 15 Hz, a loading force of 300 N (150 N distributed on each side of the implant bridge 110), and 5 million compression tests. The implant bridge 100 is qualified if it passes the test three times in a row.

[0086] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A fatigue testing device for implant bridges, which is applied to implant bridges, characterized in that: include: A base connected to the planting bridge; Loading mechanism; A cushion block is installed on the loading mechanism, the loading mechanism applies pressure to the implant bridge through the cushion block, and the position where the implant bridge connects to the base is staggered with the position of the cushion block; The implant bridge is a dental bridge type implant bridge, and a pyramid-shaped protrusion is provided at the bottom of the pad; Or the implant bridge is a rod-type implant bridge, and a semicircular keyway is provided at the bottom of the cushion block; At least one end of the implant bridge is suspended in the air, and the cushion block is abutted against the suspended end of the implant bridge.

2. The implant bridge fatigue testing device according to claim 1, characterized in that: The loading mechanism is provided with an adjusting member capable of adjusting the position up and down, and the cushion block is arranged at the bottom of the adjusting member.

3. The implant bridge fatigue testing device according to claim 2, characterized in that: The loading mechanism comprises: a driving rod that moves in an up-and-down direction; A pressure rod is connected to the driving rod, the pressure rod is provided with a screw hole which passes through from top to bottom, the adjusting member is provided with an external thread which cooperates with the screw hole, and the bottom of the adjusting member extends out from below the pressure rod.

4. The implant bridge fatigue testing device according to claim 2, characterized in that: The loading mechanism is further provided with a translation block, which moves in a horizontal direction, and the adjusting member is connected to the translation block in an up-and-down sliding manner.

5. A method for fatigue testing of an implant bridge, implemented based on the implant bridge fatigue testing device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Connecting the implant bridge with a connecting piece, and bonding the connecting piece to the base; staggering the position of the cushion block and the position of the connecting piece; Before the pressure fatigue test, a plurality of the connecting members are arranged to connect the implant bridge and the base, so that at least one end of the implant bridge is suspended in the air, and the cushion block is abutted against the suspended end of the implant bridge; Perform stress fatigue testing.

6. The implant bridge fatigue testing method according to claim 5, characterized in that: Before the pressure fatigue test, the implant bridge is designed into the shape of a dental arch.

7. The implant bridge fatigue testing method according to claim 6, characterized in that: Before the pressure fatigue test is performed, the two ends of the implant bridge are suspended in the air, and two cushion blocks are arranged to abut against the two ends of the implant bridge respectively.

8. The implant bridge fatigue testing method according to claim 5, characterized in that: The connecting piece is replaced with an implant, a base, and a connecting screw, and the implant bridge and the base are connected to the implant using the connecting screw, and the implant is bonded to the base.

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