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Composition containing artificial bone component for filling tooth cavity

A composition and artificial bone technology, applied in medical science, dentistry, dental preparations, etc., can solve the problem that the strengthening and toughening contribution of dental composite resin does not fully take into account the pulling out toughening mechanism, and cannot be fully and comprehensively displayed , Weak anchoring force and other problems, to achieve the effect of strong bonding force, increased wear resistance, and increased wear resistance

Inactive Publication Date: 2009-10-28
李榕卿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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
[0004] In order to make full use of the pull-out toughening mechanism to strengthen dental composite resins, in recent years, glass fibers with high aspect ratios, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers have been considered as inorganic materials. Fillers have attracted the attention of some researchers. Undoubtedly, if this type of inorganic filler with a high aspect ratio can be uniformly mixed into the resin, it will provide a positive benefit to the strengthening and toughening of dental composite resins. However, the long-diameter Glass fibers with high ratio, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers are difficult to mix evenly into the resin matrix due to their inherent physical shape. In other words, uniform mixing becomes an insurmountable Obstacles, this factor makes the application of inorganic materials such as glass fibers with high aspect ratio, silicon carbide whiskers, silicon nitride whiskers and aluminum borate whiskers in dental composite resins not fully and comprehensively displayed. , this is especially evident in the field of dental composite resin materials for caries filling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 10.00 grams of short rod-shaped nano-hydroxyapatite, 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 of nano-inorganic powders containing multiple components are set aside; the radial width of the short rod-shaped nano-hydroxyapatite involved is less than 100 nanometers, and its aspect ratio is distributed between 2 and 6. Short rod-shaped nano-hydroxyapatite materials with limited width and limited aspect ratio can be used.

[0026] 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 alcoho...

Embodiment 2

[0029] Weigh 80.00 grams of short rod-shaped nano-hydroxyapatite, and 20.00 grams of barium strontium boron glass powder, and mix the above three components uniformly by mechanical stirring to make a nano Inorganic powder, ready for use; wherein the radial width of the short rod-shaped nano-hydroxyapatite involved is less than 100 nanometers, and its aspect ratio is distributed between 2 and 6, and those that meet the radial width limit and aspect ratio limit Short rod-shaped nano-hydroxyapatite materials can be used.

[0030] 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 to 100°C f...

Embodiment 3

[0033] Weigh 45.00 grams of short rod-shaped nano-hydroxyapatite, and 25.00 grams of barium-strontium-boron glass powder, and 10.00 grams of strontium glass powder, and 10.00 grams of boron-aluminum glass powder, and 10.00 grams of commercially available barium-aluminum glass powder , the above multiple components are uniformly mixed by means of mechanical stirring to make a nano-inorganic powder with a total weight of 100.00 grams containing multiple components for use; wherein the radial width of the short rod-shaped nano-hydroxyapatite involved is less than 100 nanometers, its aspect ratio is distributed between 2 and 6, and any short rod-shaped nano-hydroxyapatite material that meets the above-mentioned radial width limitation and aspect ratio limitation can be used.

[0034] 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 c...

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Abstract

The invention relates to a composition containing artificial bone component for filling tooth cavity, which belongs to the field of preparation for dentistry. The object of the invention is to solve the problem that the abrasion resistance and obdurability of dentistry compound resin material for filling tooth cavity is needed to be improved urgently. The composition provided by the invention comprises the following components, in mass percentages, nano inorganic powder treated by surface modification with silicone hydride coupling agent 20-85%; resin monomer such as bisphenol A glycidyl methacrylate 8%-70%; fluidifying agent such as triethylene glycol dimethacrylate 5%-25%; photoinitiator such as camphorquinon 0.25%-2%; coinitiator such as 2-(dimethylamino)ethyl methacrylate 0.5%-3%; the main point of the invention is the nano inorganic powder contains short stick shaped nano hydroxyapatite 10-80 wt.% based on its own weight. Short stick shaped nano hydroxyapatite in the composition provided by the invention contributes to improve abrasion resistance and obdurability of material.

Description

technical field [0001] The invention relates to a caries filling composition containing artificial bone components, which belongs to the field of A61K medical and dental preparations. Background technique [0002] Dental composite resin materials are currently mostly configured by manufacturers as single paste or double paste for clinical use. The dental composite resin material of the single paste formula is also called visible light curing composite resin (VLC), which uses visible light of specific wavelength and intensity to initiate polymerization. Most of the products in the past were ultraviolet (UV) curable materials. The double-paste composite resin material can self-cure after mixing, or it can be double-cured by applying visible light after mixing. There are more than 50 kinds of composite resin formulations appearing in the current international market, which can be divided into different categories, and there are large differences in composition and performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/083A61K6/033A61K6/838
Inventor 李榕卿
Owner 李榕卿
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