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Clamp for preparing dental micro-tensile specimen and process for clamp

A micro-stretching and test piece technology, applied in the preparation of test samples, manufacturing tools, grinding workpiece supports, etc., can solve the problems such as vibration can not be effectively eliminated, interface damage, affecting the success rate, etc.

Active Publication Date: 2016-07-06
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Because the strip-shaped resin-dentin bonded specimen is relatively thin, and the root is embedded and fixed in plaster, the small vibration generated by the cutting tool directly acts on the resin-dentin bonded specimen during the preparation process. Fixed in plaster, at this time, the vibration of the cutting tool on the resin-dentin bonded specimen cannot be effectively eliminated, which can easily cause the resin-dentin bonded specimen to break due to vibration, affecting the resin-dentin bonded specimen The success rate of production, the current success rate of resin-dentin bonded specimen production is less than 50%
In addition, the vibration will also cause damage to the interface, which will inevitably have a negative impact on the final test results
[0007] To sum up, in the preparation process of micro-tensile specimens, because the resin-dentin bonded specimens cannot effectively eliminate the vibration generated by external instruments, the resin-dentin bonded specimens will be damaged due to vibration during the production process. Fracture occurs, and it is urgent to design a tool that can reduce the impact of vibration on resin-dentin bonded specimens during the production process of resin-dentin bonded specimens

Method used

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  • Clamp for preparing dental micro-tensile specimen and process for clamp
  • Clamp for preparing dental micro-tensile specimen and process for clamp
  • Clamp for preparing dental micro-tensile specimen and process for clamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment one is basically as figure 2 and image 3 Shown: a jig for preparing a dental micro-tensile specimen, including an upper splint 10 and a lower splint 20 . The upper splint 10 and the lower splint 20 are connected by bolts 22, the bolts 22 are welded on the lower splint 20, the bolts 22 are covered with wing nuts 23, and the upper part of the lower splint 20 is also welded with a guide post 24, the cross-sectional shape of the guide post 24 can be Be triangle, quadrilateral, pentagon, hexagon etc., the present embodiment selects regular quadrilateral for use. The bottom of the lower splint 20 is welded with an inverted tapered positioning block 25 . The upper splint 10 is provided with a connecting hole for the screw to pass through and a guide hole for the guide post 24 to pass through. The inner diameter of the connecting hole is 0.4 mm larger than the outer diameter of the bolt 22 .

[0035] A first elastic block 11 is bonded to the bottom of the upper...

Embodiment 2

[0040] Such as Figure 5 As shown, the difference between the second embodiment and the first embodiment is that the upper splint 10 and the lower splint 20 are fixed by clamps 30 in this embodiment, and the sheet-shaped test piece 40 is immersed in the oil-water mixture at a temperature of 2°C for grinding. . The volume ratio of oil to water in the oil-water mixture is: 1:8.

[0041] This solution adopts the clamp 30 to fix the upper splint 10 and the lower splint 20, which has the characteristics of simple operation and short operation time. Soak the flake test piece 40 in the oil-water mixture at 2°C for grinding. On the one hand, it is to cool down the working surface of the grinding tool and the grinding part of the flake test piece 40, so as to reduce the impact of high temperature caused by grinding on the grinding surface. On the other hand, because the oil film molecules are attached to the surface of the water, the cold water is isolated from the air, prolonging th...

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Abstract

The invention belongs to adhesive tests for dental treatment in laboratories and in particular discloses a clamp for preparing a dental micro-tensile specimen. The clamp comprises an upper clamping plate and a lower clamping plate, wherein the upper clamping plate is detachably connected with the lower clamping plate; a first elastic block is arranged at the bottom of the upper clamping plate; a second elastic block is arranged at the top part of the lower clamping plate; a group of first grooves are formed in the bottom of the first elastic block; second grooves matched with the first grooves are formed in the top part of the second elastic block; the first grooves and the second grooves form rectangular channels with the cross sections to be rectangular; the first and second elastic blocks are both hard sponge; the lower clamping plate is provided with a guide pillar; a guide hole supplied for the guide pillar to penetrate through is formed in the upper clamping plate; and a locating block is arranged at the lower part of the lower clamping plate and is in an inverted cone shape. The scheme has the characteristics that vibration of a resin-dentin adhesion specimen in the preparation process of the resin-dentin adhesion specimen is lowered, and thus the success rate of manufacturing the resin-dentin adhesion specimen is increased.

Description

technical field [0001] The invention relates to the field of adhesive testing for dental treatment in a laboratory, in particular to a fixture and a process for preparing a dental micro-tension test piece. Background technique [0002] Explanation of technical terms in the background technology: interface refers to: the plane cut out by the tooth, that is, the plane on which the adhesive is applied on the tooth. [0003] The micro-tensile test method is one of the most important research methods used in oral adhesives to evaluate the bonding strength between oral adhesives and tooth tissues. It can reduce the influence of insufficient flatness of the interface on the actual bond strength, so that the test results are closer to the real value. [0004] When performing micro-tensile testing, it is usually necessary to prepare micro-tensile specimens with a cross-sectional area of ​​0.8 mm × 0.8 mm in advance. The conventional preparation process is as follows: figure 1 As sh...

Claims

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Application Information

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IPC IPC(8): B24B41/06B24B19/22G01N1/28G01N1/32
CPCB24B19/22B24B41/06G01N1/28G01N1/32
Inventor 熊宇
Owner THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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