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Simulated chewing composite resin material abrasion tester

A composite resin and wear test technology, which is applied in the field of medical devices, can solve the problems of inconsistent wear methods and results of test pieces, uneven wear of test pieces, etc.

Pending Publication Date: 2019-08-30
PEKING UNIV SCHOOL OF STOMATOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a simulated chewing type composite resin material wear tester, to solve the uneven wear of the test piece in the prior art, and the technology that the way and result of the wear of the test piece in vitro do not match the actual clinical conditions question

Method used

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  • Simulated chewing composite resin material abrasion tester
  • Simulated chewing composite resin material abrasion tester
  • Simulated chewing composite resin material abrasion tester

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Embodiment

[0066] In the prior art, the upper and lower groups of test pieces are worn along the fixed axis, so that the wear amount of the test piece close to the axis of the maxillary simulation mechanism is small, and the wear amount of the part far away from the axis is large, so that the wear of the test piece There are unidirectional wear marks on the worn surface, and the wear damage pattern is directional, resulting in uneven wear on the surface of the specimen, which is not conducive to the measurement of the wear test results.

[0067] For the above problems, see Figure 2-Figure 10 As shown, the present embodiment provides a simulated chewing type composite resin material abrasion tester, the simulated chewing type composite resin material wear tester includes a movement device, a pair of grinding couples 1 and a frame 2, and the movement device and the pair of grinding pairs The pieces 1 are all connected to the frame 2; the moving device is connected with a test piece clamp ...

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Abstract

The invention relates to a dental material abrasion tester, in particular to a simulated chewing composite resin material abrasion tester. The simulated chewing composite resin material abrasion tester consists of a moving device, a pair grinding coupling and a frame, wherein the moving device and the pair grinding coupling are connected to the frame; the moving device is connected with a specimenclamp for fixing a specimen; the specimen clamp can be lifted and rotated repeatedly relative to the frame, and can move close to or far from the pair grinding coupling; the pair grinding coupling can rotate relative to the frame; and one side of the pair grinding coupling close to the specimen clamp is provided with an abrasive for simulating food. The simulated chewing composite resin materialabrasion tester provided by the invention has the characteristics that the occlusion contact and friction process between the specimen and the pair grinding coupling are carried out intermittently respectively, and meanwhile a low-hardness soft abrasive and the elastic pair grinding coupling are adopted, so that the technical problems of uneven wear of the specimen and inconsistence between the surface abrasion pattern and the actual clinical situation are solved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a simulated chewing type composite resin material wear tester. Background technique [0002] In oral clinical treatment, composite resin filling materials are currently the most widely used filling materials for carious teeth. Abrasion loss due to chewing food is one of the main failure modes of composite resin filling materials in the oral cavity. However, since there is almost no linear correlation between the basic mechanical and physical properties of composite resin materials and the wear resistance, the in vitro wear test has become an indispensable means to evaluate the performance of dental filling materials. [0003] see figure 1 as shown, figure 1 It is a structural schematic diagram of an existing chewing simulation wear tester (application number: 201720221322), which includes a maxillary simulation mechanism 1', a mandibular simulation mechanism 2' and a s...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N3/04
CPCG01N3/56G01N3/04G01N2203/0005G01N2203/0208G01N2203/0256
Inventor 徐恒昌刘文一王同郑刚孙志辉张研林红韩建民
Owner PEKING UNIV SCHOOL OF STOMATOLOGY
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