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Dental material containing rare earth elements

A rare earth element, dental technology, applied in dentistry, medical science, dental preparations, etc., can solve problems such as peeling and weak anchoring force, and achieve the effect of increasing wear resistance, strong bonding force, and increasing wear resistance.

Inactive Publication Date: 2010-03-17
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

[0016] Weigh 10.00 grams of ceria 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 ceria nanotubes involved is between 10 nanometers and 50 nanometers, and the length of the ceria nanotubes involved is between 50 nanometers and 50 nanometers. 600 nanometers, and the ratio of the length to the outer diameter of the ceria nanotubes is between 3 and 80, any ceria nanotube material that meets the above limitations can be used.

[0017] 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 components is dispersed in ultrasonic waves, and then re...

Embodiment 2

[0020] Weigh 80.00 grams of cerium dioxide nanotubes, and 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 ceria nanotubes involved is between 10 nanometers and 50 nanometers, and the length of the ceria nanotubes involved is between 50 nanometers and 600 nanometers, and the ratio of the length to the outer diameter of the ceria nanotubes is between 3 and 80, any ceria nanotube material that meets the above limitations can be used.

[0021] 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 components is dispersed in ultrasonic waves, then reacted at 100°C for 2 h...

Embodiment 3

[0024] Weigh 45.00 grams of ceria 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 cerium dioxide nano The outer diameter of the tube is between 10 nanometers and 50 nanometers, and the length of the ceria nanotubes is between 50 nanometers and 600 nanometers, and the length of the ceria nanotubes is between 50 nanometers and the outer diameter The ratio is between 3 and 80, and any ceria nanotube material that satisfies the above definition can be used.

[0025] 10.00 grams of medical grade silane coupling agent KH-570 was hydrolyzed under the...

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PUM

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Abstract

The invention relates to a dental material containing rare earth elements, which belongs to the field of dental preparation. The scheme aims at solving the problem that the existing photo-curing single-paste dental material used for filling caries needs to be further improved in the aspects of abrasion resistance and toughness. The material comprises the following components by weight percentage:20 to 85 percent of inorganic nano-powder which is subjected to surface modification by silane coupling agent, 8 to 70 percent of bisphenol A glycidyl methacrylate resin monomer, 5 to 25 percent of triethylene-glycol dimethacrylate thinner, 0.25 to 2 percent of camphorquinone photo-initiator and 0.5 to 3 percent of dimethylamino ethyl methacrylate coinitiator. The key point of the scheme is as follows: the inorganic nano-powder contains ceria nano-tube which accounts for 10 to 80 percent by weight of the inorganic nano-powder. The addition of the ceria nano-tube in the inorganic nano-powder isbeneficial to improving the abrasion resistance and increasing the toughness.

Description

technical field [0001] The invention relates to a dental material containing rare earth elements, and belongs 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 particles...

Claims

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Application Information

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IPC IPC(8): A61K6/02A61K6/033A61K6/083A61K6/838
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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