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Dental material containing inorganic filler components

A technology of inorganic fillers and inorganic nano-fillers, applied in dentistry, dental preparations, dental prostheses, etc., can solve problems such as weak anchoring force and peeling, achieve strong bonding, increase wear resistance, and improve toughness.

Inactive Publication Date: 2009-11-18
中国人民解放军南京军区福州总医院四七六临床部
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the components of single paste type dental composite resin for caries filling, the inorganic fillers added to increase strength and wear resistance are mostly amorphous particles, which can play a role similar to spherical particles in the composite resin. After polymerization In the surface layer of the dental composite resin after reaction curing, the bonding surface between the amorphous particles and the resin matrix is ​​small, the anchoring force is therefore weak, and it is easy to peel off during the friction process. The role of dental composite resin in terms of wear resistance has been discounted. On the other hand, in the dental composite resin body for caries filling after curing, the shape of the amorphous particles is roughly approximate to a spherical shape. The strengthening and toughening contribution of the resin is also somewhat lacking due to the failure to fully take into account the pull-out toughening mechanism

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 10.00 grams of zirconia nanotubes, and 50.00 grams of barium strontium boron glass powder, and 40.00 grams of borosilicate glass powder, and mix the above three components uniformly by mechanical stirring to make a total weight of 100.00 grams The nano-inorganic powder containing multiple components is ready for use; wherein the outer diameter of the zirconium dioxide nanotubes involved is between 20 nanometers and 300 nanometers, and the length of the zirconium dioxide nanotubes involved is between 0.2 microns and 200 microns Between, the ratio of the length to the outer diameter of the zirconium dioxide nanotubes involved is between 3 and 100, and any zirconium dioxide nanotube material meeting the above-mentioned limitation can be used.

[0024] 2.50 grams of medical-grade silane coupling agent KH-570 were hydrolyzed under the action of acetic acid, and 40 milliliters of hydroalcoholic solution was added. The pre-mixed nano-inorganic powder containing multiple ...

Embodiment 2

[0027] Weigh 80.00 grams of zirconia nanotubes, 15.00 grams of barium strontium boron glass powder, and 5.00 grams of nano-hydroxyapatite, and mix the above three components uniformly by mechanical stirring to make a total weight of 100.00 gram of nano-inorganic powder containing multiple components, ready for use; wherein the outer diameter of the zirconium dioxide nanotubes involved is between 20 nanometers and 300 nanometers, and the length of the zirconium dioxide nanotubes involved is between 0.2 microns and 200 nanometers Between micrometers, the ratio of the length to the outer diameter of the zirconium dioxide nanotubes involved is between 3 and 100, and any zirconium dioxide nanotube material that meets the above limitations can be used.

[0028] 2.00 grams of medical grade silane coupling agent KH-570 was hydrolyzed under the action of acetic acid, and 400 milliliters of hydroalcoholic solution was added. The premixed nano-inorganic powder containing multiple compone...

Embodiment 3

[0031] Weigh 45.00 grams of zirconium dioxide nanotubes, and, 25.00 grams of barium strontium boron glass powder, and, 10.00 grams of nano-hydroxyapatite, and, 5.00 grams of strontium glass powder, and, 5.00 grams of boron aluminum glass powder, and, 10.00 gram of commercially available barium-aluminum glass powder, the above multiple components are uniformly mixed by means of mechanical stirring, and a total weight of 100.00 grams of nano-inorganic powder containing multiple components is prepared for subsequent use; wherein the involved zirconia nano The outer diameter of the tube is between 20 nanometers and 300 nanometers, the length of the zirconium dioxide nanotubes is between 0.2 micrometers and 200 micrometers, and the ratio of the length to outer diameter of the zirconium dioxide nanotubes is 3 Between and 100, any zirconia nanotube material that satisfies the above-mentioned limitation can be used.

[0032] 10.00 grams of medical grade silane coupling agent KH-570 wa...

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Abstract

The invention relates to a dental material containing inorganic filler components, belonging to the field of dental preparation and aiming at solving the problem that performances of the light-curing single-paste formulation dental material used for cavity restoration on wearability and toughness need to be improved urgently at present. The dental material comprises the following components by weight: 20-85% of nano-inorganic powder with the surface modified by a silane coupling agent, 8-70% of resin monomer such as bisphenol A-glycidyl methacrylate, 5-25% of thinner such as triethylene-glycol dimethacrylate, 0.25-2% of photo-initiator such as camphorquinone, and 0.5-3% of coinitiator such as dimethylaminoethyl methacrylate. The key point is as follows: the nano-inorganic powder contains the zirconia nano-tube which accounts for 10-80% the weight of the nano-inorganic powder. The zirconia nano-tube has high hardness and rod-like appearance, thus being beneficial to improving the wearability and the dbdurability of the material.

Description

technical field [0001] The invention relates to a dental material containing inorganic filler components, belonging to the field of A61K medical and dental preparations. Background technique [0002] Compared with traditional caries-filling dental materials such as glass ionomer cement, light-cured single-paste composite resin materials containing inorganic fillers have obvious comprehensive advantages. The application is becoming an irreversible trend. In order to further optimize its performance, it is necessary to continuously improve and improve this kind of material. [0003] In the components of single paste type dental composite resin for caries filling, the inorganic fillers added to increase strength and wear resistance are mostly amorphous particles, which can play a role similar to spherical particles in the composite resin. After polymerization In the surface layer of the dental composite resin after reaction curing, the bonding surface between the amorphous par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/02
Inventor 李榕卿
Owner 中国人民解放军南京军区福州总医院四七六临床部
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