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Micro-tensile bonding strength testing fixture for dental bonding agent

A technology for bonding strength and testing fixtures, used in measuring devices, manufacturing tools, workpiece clamping devices, etc., can solve the problems of unsuitable bonding strength testing of dental adhesives, complex structures, etc., and achieve bonding strength testing. Accurate results, extended functionality, low-cost effects

Inactive Publication Date: 2014-04-23
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application number 200810050350.3 discloses a micro-tensile device for testing the nanoscale mechanical properties of materials, but its structure is complex, and its advantage lies in the precise control of the loading force
Therefore, the currently reported micro-tensile device is not suitable for the bond strength test of dental adhesives.

Method used

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  • Micro-tensile bonding strength testing fixture for dental bonding agent
  • Micro-tensile bonding strength testing fixture for dental bonding agent
  • Micro-tensile bonding strength testing fixture for dental bonding agent

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Embodiment Construction

[0022] The technical solution of the present invention will be further described below through specific examples. The following examples are further illustrations of the present invention, but do not limit the scope of the present invention.

[0023] A jig for testing the micro-tensile bonding strength of dental adhesives. The front part of the connecting shaft 4 is a guide rod 5, and the side of the rear part is provided with a pin hole 9; in the working state, the upper slider 31 is fixedly connected with the pull rod 1, Simultaneously, it is slidably connected with the guide rod 5; the lower slider 32 is fixedly connected with the guide rod;

[0024] The working surfaces of the upper and lower sliders are located on the same horizontal plane, and the center line of the working surfaces of the upper and lower sliders is provided with a sample limiting groove 7 .

[0025] The pull rod is a U-shaped structure; the pull rod is fixedly connected with the upper slider through th...

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Abstract

The invention discloses a micro-tensile bonding strength testing fixture for a dental bonding agent. The front portion of a connecting shaft is provided with a guide rod, and the side face of the back portion of the connecting shaft is provided with a bolt hole; an upper slide block and a lower slide block sliding along the guide rod are fixedly connected to the guide rod; a rigid pull rod is fixedly connected to the upper portion of the upper slide block; the central lines of the upper and lower slide blocks are provided with sample limiting grooves. The micro-tensile bonding strength testing fixture has the advantages that the connecting shaft of a universal test is used together with the universal test, thereby greatly reducing the cost of separate use of a micro-tensile tester and expanding the function of the universal tester; a bonded article is compressed through dual nuts and a gasket without bonding the bonded article on a test table by using the bonding agent; during cutting of a bonded sample, the bonding surface is kept flat, and the strain defect during cutting of the bonded sample can be avoided by directly cutting the bonded sample into small pieces as required; the testing fixture is stable in clamping, convenience in use, simple in structure, and very low in cost; by adopting the guide rod, the bonding strength test result is more accurate.

Description

technical field [0001] The invention relates to a system for testing the bonding strength of dental adhesives widely used in the dental medical field, in particular to a jig for testing the micro-tensile bonding strength of dental adhesives. Background technique [0002] Adhesives are widely used in dental restorations. The performance evaluation of dental adhesives mainly involves the determination of the bonding strength of hard tissues, which is one of the most important indicators in the development of dental adhesives. There is a micro-tensile tester, which has no guide rod in its structure, and has no lateral restraint force when stretched and separated from each other. feature. Patent application No. 200810050350.3 discloses a micro-tensile device for testing the nanoscale mechanical properties of materials, but its structure is complex, and its advantage lies in the precise control of the loading force. Therefore, the micro-tensile devices reported so far are not ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25B11/00G01N19/04
CPCB25B11/00G01N19/04
Inventor 周涓朱君何丹农
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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