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Photo-curing compound resin used for dental repair and using diatomite as stuffing and preparation method thereof

A composite resin, dental restoration technology, applied in dental preparations, dentistry, medical science and other directions, can solve the problems of large particle size, uneven dispersion, weak X-ray resistance of fillers, etc., to achieve improved mechanical properties and simple preparation methods , Improve the effect of filling volume

Inactive Publication Date: 2010-08-18
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) Due to the weak X-ray resistance of the resin material, there is no obvious contrast with the carious tooth body. When secondary caries occurs, it is difficult to distinguish the resin material from the secondary caries on the X-ray film
Generally speaking, the particle size of the filler is large, and its dispersion in the resin is uneven, and the stress on the material is not easy to disperse evenly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The components of the composite resin and the content of each component are:

[0036] components

[0037] components

[0038] Preparation of light-cured composite resin: According to the ratio of the above formula, mix Bis-GMA, TEGDMA, CQ and 4-EDMAB evenly in a certain proportion, then add a certain amount of modified diatomite and modified OX-50, and manually Stir and pre-mix until the powder is completely wetted by the resin matrix, then put it into a three-roll machine and stir until it is uniform, and then the composite resin is prepared. Samples were prepared according to various evaluation methods, and then tested. The measured values ​​of flexural strength, elastic modulus, microhardness and compressive strength are shown in Table 1.

Embodiment 2

[0039] In embodiment 2,3,4,5, inorganic filler accounts for 70% of composite resin gross mass, wherein the mass ratio of modified diatomaceous earth and modified OX-50 in these four embodiments is respectively 7: 3, 5:5, 4:6, 3:7. In Example 6, the inorganic filler accounts for 65% of the total mass of the composite resin, and the mass ratio of modified diatomaceous earth to modified OX-50 is 2:8. In Example 7, the inorganic filler accounts for 75% of the total mass of the composite resin, and the mass ratio of modified diatomaceous earth to modified OX-50 is 5:5.

[0040] The preparation and evaluation methods of the photocurable composite resins of Examples 2, 3, 4, 5, 6, and 7 are the same as those of Example 1. The measured values ​​of flexural strength, elastic modulus, microhardness and compressive strength are listed in Table 1.

[0041] Component content and the value of flexural strength, modulus of elasticity, microhardness and compressive strength of each embodime...

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PUM

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Abstract

The invention relates to a photo-curing compound resin used for dental repair and using diatomite as stuffing and preparation method thereof. The component of the compound resin comprises a resin matrix and stuffing. The stuffing is the modified diatomite and modified gas phase method silicon dioxide OX-50. The preparation comprises: (1) the resin matrix: BPA-methacrylic acid glycidyl ester, dimethyl crylic acid TEG ester, camphorquinone and EDB are mixed evenly, (2) the diatomite and the silicon dioxide are modified, (3) the resin matrix, the modified diatomite and the modified gas phase method silicon dioxide are manually stirred, premixed to the extent that powder is completely wetted by the resin matrix and mixed evenly in a three-roll machine and then the compound resin is obtained. The mechanical performance of the compound resin is improved greatly, the flexural strength can reach 135MPa and the elastic modulus reaches 7.5GPa. The preparation method is simple and the invention is applicable to industrial production.

Description

technical field [0001] The invention belongs to the field of photocurable composite resin for dental restoration and its preparation, in particular to a photocurable composite resin for dental restoration with diatomaceous earth as a filler and a preparation method thereof. Background technique [0002] Visible light-curable composite resin is a new type of dental material. It is one of the commonly used filling materials and restoration materials in dentistry. It is used to repair tooth defects caused by dental caries and trauma. Composite resin has been widely used to replace amalgam since it appeared as a dental restoration material in the mid-1960s due to its excellent physical properties, operability, toughness, and wear resistance. Composite resins compensate for the weaknesses of amalgam and are more aesthetically pleasing. Their range of applications is also constantly expanding, from small anterior restorations to large posterior restorations. [0003] Composite r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/027A61K6/02
Inventor 王宏志王华张青红李耀刚
Owner DONGHUA UNIV
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