A method for detecting a special sample preparation fit gap

Abstract

The application discloses a kind of detection methods of special sample preparation fit clearance, belong to medical instrument technical field.It includes the following steps: step 1, by three-dimensional software to establish implant, abutment and central bolt three-dimensional assembly model;Step 2, by three-dimensional software to establish placement tooling model;Step 3, in the top surface of placement tooling model setting assembly model groove;Step 4, by 3D printing method to produce placement tooling model;Step 6, along the cutting line parallel to the central axis of assembly body cutting assembly body;Step 7, cut after part assembly body is placed in the assembly model groove of polishing and polishing tooling;Step 8, artificial polishing and polishing along polishing and polishing tooling upper surface;Step 9, on the upper surface of special sample preparation, measure each fit clearance of implant, abutment and central bolt by optical measuring instrument.The application improves the detection precision of fit clearance, does not rely on artificial observation to improve sample preparation efficiency and accuracy, saves manpower and material resources cost.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a method for detecting the gap between special sample preparations. Background Technology

[0002] The existing testing method is as follows: The dental implant and its matching implant abutment are assembled and fixed with a central screw, then embedded with dental self-curing resin. After the self-curing resin has completely cured, the implant is cut in half along its long axis. One half is ground and polished, and the mating gaps between the implant and the implant abutment are measured using an optical measuring instrument.

[0003] The above-mentioned technology has the following disadvantages:

[0004] 1. After cutting in half, the grinding and polishing process has a large error. The fit gap should be ground to exactly half a gap. If the grinding is insufficient or excessive, the measured gap value will be inaccurate.

[0005] 2. After cutting, grinding and polishing mainly rely on manual observation to control the amount of grinding, which is not only labor-intensive and resource-intensive, but also easy to cause sample preparation failure and waste of samples. Summary of the Invention

[0006] To address the problems existing in the aforementioned background technology, this invention proposes a special method for detecting the gap between mating parts. This method improves the detection accuracy of the gap, increases sample preparation efficiency and accuracy without relying on manual observation, and saves manpower and material costs.

[0007] The technical solution of this invention is implemented as follows:

[0008] A special sample preparation method for detecting the fit gap is used to detect the fit gap between the implant, abutment, and central bolt. The specific steps are as follows:

[0009] Step 1: Create a 3D assembly model of the implant, abutment, and central bolt using 3D software;

[0010] Step 2: Create a placement tooling model using 3D software;

[0011] Step 3: Use Boolean operations to help set the assembly model slot on the top surface where the tooling model is placed;

[0012] Step 4: Create a placement fixture model using 3D printing and use it as a grinding and polishing fixture;

[0013] Step 5: Randomly select an assembly of an implant, abutment, and central bolt from the group;

[0014] Step 6: Cut the assembly along a cutting line parallel to the central axis of the assembly;

[0015] Step 7: Place the cut part of the assembly into the assembly mold slot of the grinding and polishing fixture;

[0016] Step 8: Manually grind and polish the upper surface of the grinding and polishing fixture to obtain a special sample for testing the fit clearance;

[0017] Step 9: Use an optical measuring instrument to measure the various mating gaps of the implant, abutment, and central bolt on the upper surface of the specially prepared sample.

[0018] Furthermore, after the assembly model is placed in the assembly model slot, the assembly model is horizontal and the assembly model slot covers half of the outer surface area of ​​the assembly model.

[0019] Furthermore, in step 6, the distance between the cutting line and the central axis is (0, 0.2] mm.

[0020] Furthermore, in step 7, the larger part of the cut assembly is selected and placed in the assembly model slot.

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] 1. The manufacturing process of this invention includes the design and manufacture of a processing fixture, which allows subsequent manual grinding and polishing to be performed along the upper surface, thereby improving the efficiency of manual grinding and polishing.

[0023] 2. The machining tooling in this invention is designed and manufactured using computer-aided Boolean operations and 3D printing, which can ensure the accuracy and matching degree of the tooling dimensions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the grinding and polishing fixture in an embodiment of the present invention.

[0025] In the diagram: 1. Grinding and polishing fixture; 2. Assembly mold slot. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0027] A special sample preparation method for detecting the fit gap is used to detect the fit gap between the implant, abutment, and central bolt. The specific steps are as follows:

[0028] Step 1: Create a 3D assembly model of the implant, abutment, and central bolt using 3D software;

[0029] Step 2: Create a placement tooling model using 3D software;

[0030] Step 3: Use Boolean operations to help set the assembly model slot on the top surface where the tooling model is placed;

[0031] Step 4: Create a placement fixture model using 3D printing and use it as a grinding and polishing fixture;

[0032] Step 5: Randomly select an assembly of an implant, abutment, and central bolt from the group;

[0033] Step 6: Cut the assembly along a cutting line parallel to the central axis of the assembly;

[0034] Step 7: Place the cut part of the assembly into the assembly mold slot of the grinding and polishing fixture;

[0035] Step 8: Manually grind and polish the upper surface of the grinding and polishing fixture to obtain a special sample for testing the fit clearance;

[0036] Step 9: Use an optical measuring instrument to measure the various mating gaps of the implant, abutment, and central bolt on the upper surface of the specially prepared sample.

[0037] Furthermore, after the assembly model is placed in the assembly model slot, the assembly model is horizontal and the assembly model slot covers half of the outer surface area of ​​the assembly model.

[0038] Furthermore, in step 6, the distance between the cutting line and the central axis is (0, 0.2] mm.

[0039] Furthermore, in step 7, the larger part of the cut assembly is selected and placed in the assembly model slot.

[0040] The following is a more specific example:

[0041] Reference Figure 1 The key technical points in this embodiment are: 1. A three-dimensional model of a grinding and polishing fixture with a reserved half of the assembly and exactly reaching halfway is designed by computer-aided design.

[0042] 2. Using 3D printing technology, a physical model is created from the 3D model of the fixture to serve as a grinding and polishing tooling.

[0043] 3. Place the cut assembly portion (more than half) into the grinding and polishing fixture, and grind and polish along the edge of the fixture to reduce processing difficulty, ensure accurate positioning, and minimize human error.

[0044] 4. Special sample preparation according to the tooling edge processing can perfectly reach half of the whole, improve sample preparation accuracy, and avoid sample waste caused by insufficient or excessive grinding.

[0045] The above description is merely an embodiment of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit and principles of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A method for detecting the fit gap in a special sample preparation, characterized in that, The specific steps for checking the fit clearance between the implant, abutment, and central bolt are as follows: Step 1: Create a 3D assembly model of the implant, abutment, and central bolt using 3D software; Step 2: Create a placement tooling model using 3D software; Step 3: Use Boolean operations to help set the assembly model slot on the top surface where the tooling model is placed; Step 4: Create a placement fixture model using 3D printing and use it as a grinding and polishing fixture; Step 5: Randomly select an assembly of an implant, abutment, and central bolt from the group; Step 6: Cut the assembly along a cutting line parallel to the central axis of the assembly; Step 7: Place the cut part of the assembly into the assembly mold slot of the grinding and polishing fixture; Step 8: Manually grind and polish the upper surface of the grinding and polishing fixture to obtain a special sample for testing the fit clearance; Step 9: Use an optical measuring instrument to measure the various mating gaps of the implant, abutment, and central bolt on the upper surface of the specially prepared sample. After the assembly model is placed in the assembly model slot, the assembly model is horizontal and the assembly model slot covers half of the outer surface area of ​​the assembly model. In step 7, the larger part of the cut assembly is selected and placed in the assembly model slot.

2. The method for detecting the fit gap of a special sample according to claim 1, characterized in that, In step 6, the distance between the cutting line and the central axis is (0, 0.2] mm.

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