Dental resin composition utilizing reinforcing mechanism with mixed nanometer

A technology of resin composition and reinforcement mechanism, which is applied in the fields of dentistry, dental preparations, dental prosthesis, etc., can solve the problem that the contribution of dental composite resin to strengthening and toughening does not fully take into account the pull-out toughening mechanism, and cannot be fully and comprehensively In order to achieve the effect of not easy to mix obstacles, strong binding force, and increase wear resistance

Inactive Publication Date: 2009-09-02
李榕卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Among the components of dental composite resins, the inorganic fillers added to increase strength and wear resistance are mostly amorphous particles, which can play a role similar to spherical particles in composite resins. Dental composites after polymerization and curing The surface layer of the resin, the bonding surface between the amorphous particles and the resin matrix is ​​small, the anchoring force is thus weak, and it is easy to peel off during the friction process. This factor makes the amorphous particles play an important role in improving the wear resistance of dental composite resins. On the other hand, in the body of the dental composite resin after curing, the morphology of the amorphous particles is roughly approximate to a spherical shape, and the contribution to the strengthening and toughening of the dental composite resin is also due to insufficient consideration of the pull-out enhancement. There are some deficiencies in the toughness mechanism
[0006] In order to make full use of the pull-out toughening mechanism to strengthen dental composite resi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 10.00 grams of alumina nanorods, 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. Nano-inorganic powder containing multiple components, ready for use; wherein the radial width of the aluminum oxide nanorods involved is less than 100 nanometers, and its aspect ratio is distributed between 5 and 15, as long as the radial width limit and major diameter are satisfied Ratio defined alumina nanorod materials can be used.

[0027] 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 reacted at 50°C for 24 hours, moved to an oven, and dried at 80°C for 10 hours, then, use the water alcohol The sol...

Embodiment 2

[0030] Weigh 80.00 grams of alumina nanorods, 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 grams The nano-inorganic powder containing multiple components is ready for use; wherein the radial width of the aluminum oxide nanorods involved is less than 100 nanometers, and its aspect ratio is distributed between 5 and 15. Alumina nanorod materials with limited diameter ratios can be used.

[0031] 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 hours, moved to an oven, and dried at 80°C for 2 hours, then, use the water alcohol The solution is washed, then dried at 80°C for 2 hours, and then heated...

Embodiment 3

[0034] Weigh 45.00 grams of alumina nanorods, 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 grams Commercially available barium-aluminum glass powder, the above multiple components are uniformly mixed by means of mechanical stirring, and the total weight is 100.00 grams of nano-inorganic powder containing multiple components, ready for use; wherein the alumina nanorods involved The radial width is less than 100 nanometers, and its aspect ratio is distributed between 5 and 15. Any aluminum oxide nanorod material that meets the radial width limitation and aspect ratio limitation can be used.

[0035] 10.00 grams of medical grade silane coupling agent KH-570 was hydrolyzed under the action of acetic acid, and 200 milliliters of hydroalcoholic solution was added. The premixed nano-inorganic powder containing multiple components i...

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Abstract

The invention relates to a method for preparing dental fortified resin based on the principle of material hybridization modification, belonging to the field of medical and dental preparation. The wear-resisting property and the obdurability of the existing composite dental resin used for filling tooth cavities are in urgent need to be improved, and the invention aims at promoting the technological progress of the resin. The method includes the steps: carrying out the operation of surface modification to inorganic nano-sized powder under the utilization of silane coupling agent; uniformly mixing the modified inorganic nano-sized powder with monomer, such as bisphenol A methyl glycidyl acrylate, diluting agent, such as triethylene-glycol dimethacrylate, light trigger, such as camphorquinone, coinitiator, such as dimethylaminoethyl methacrylate, and other materials under photophobic conditions; and eliminating air bubbles under vacuum condition. The invention is characterized in that the interior of the inorganic nano-sized powder contains aluminium oxide nano rods which are 10 to 80 percent of the weight of the inorganic nano-sized powder. The aluminium oxide nano rods added inside contribute to the improvement of the wear-resisting property and the obdurability of the materials.

Description

technical field [0001] The invention relates to a dental resin composition utilizing a nano-doping enhancement mechanism, which belongs to the field of A61K medical and dental preparations. Background technique [0002] For a long time, with the unremitting efforts of medical workers, the incidence of dental caries has dropped significantly. However, dental caries as a widespread disease has not disappeared. According to statistics, no matter in developed countries or in In underdeveloped countries, the incidence of caries has reached a level that cannot be taken lightly. In my country, for example, the per capita caries rate is 40%, among which the caries rate is 80% for children and 60% for young people. ~70%, the caries rate of the elderly is 52%, and each patient involves an average of 2 to 3 teeth. The reality shows that there is a large market demand for dental filling materials for the treatment of caries. Dental composite resin is widely used in the restoration and f...

Claims

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Application Information

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IPC IPC(8): A61K6/083A61K6/04A61K6/02A61K6/033A61P1/02A61K6/838
Inventor 李榕卿
Owner 李榕卿
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