Dental material preparation method utilizing osteoid nano particle for compound modification

A nanoparticle and composite modification technology, applied in the field of A61K medical and dental preparations, can solve the problems of insufficient consideration of the contribution of strengthening and toughening, failure to perform application, weak anchoring force, etc. The effect of strengthening strength and improving toughness

Inactive Publication Date: 2009-11-11
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

[0002] In the existing commercially available single-paste light-cured dental composite resin materials for caries filling, the inorganic filler components added to increase the strength and wear resistance mostly use amorphous particles, and the amorphous particles are contained in the composite resin. It can play a role similar to spherical particles. On the surface layer of the dental composite resin cured by polymerization, the bonding surface between the amorphous particles and the resin matrix is ​​small, and the anchoring force is therefore weak, and it is easy to peel off during the friction process. This factor compromises the role of amorphous particles in improving the wear resistance of dental composite resins. On the other hand, in the body of dental composite resins after curing, the contribution of amorphous particles to the strengthening and toughening of dental composite resins is also due to There are some deficiencies due to not fully taking into account the pull-out toughening mechanism
[0003] In order to make full use of the pull-out toughening mechanism to strengthen dental composite resins for dental caries, in recent years, glass fibers with high aspect ratios, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers have been used as worthy candidates. The inorganic fillers considered have attracted the attention of some researchers. Undoubtedly, if this kind of inorganic fillers with a high aspect ratio can be uniformly mixed into the resin, it will provide a positive assistance to the strengthening and toughening of dental composite resins for caries filling. However, glass fibers with a high aspect ratio, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers are difficult to mix evenly into the caries-filling resin matrix due to their inherent physical appearance, in other words In other words, uniform mixing becomes an insurmountable obstacle. This factor makes inorganic materials such as glass fiber, silicon carbide whiskers, silicon nitride whiskers, and aluminum borate whiskers with high aspect ratios used in dental composite resins for caries filling. The application in the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Weigh 10.00 grams of flaky 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 gram of nano-inorganic powder containing multiple components, ready for use; wherein the slab width of the flaky hydroxyapatite is between 0.3 microns and 36.0 microns, and the slabs of the flaky hydroxyapatite The ratio of the width to the thickness of the sheet is between 3 and 40, and any sheet-shaped hydroxyapatite material that satisfies the restrictions on the width of the sheet and the ratio of the width to the thickness of the sheet can be used.

[0033] 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...

Embodiment 2

[0036] Weigh 80.00 grams of flaky 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 nano-organic compound with a total weight of 100.00 grams containing multiple components. Powder, ready for use; wherein the plate width of the flaky hydroxyapatite is between 0.3 micron and 36.0 microns, and the ratio of the plate width to the plate thickness of the flaky hydroxyapatite is between Between 3 and 40, any flaky hydroxyapatite material that satisfies the limitation of the width of the plate and the ratio of the width of the plate to the thickness of the plate can be used.

[0037] 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 ho...

Embodiment 3

[0040] Weigh 45.00 grams of flaky 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 mechanical stirring to make a nano-inorganic powder with a total weight of 100.00 grams containing multiple components, which is ready for use; the sheet width of the flaky hydroxyapatite involved is between 0.3 microns and 36.0 microns, and the ratio of plate width to plate thickness of the flaky hydroxyapatite is between 3 and 40, where said plate width limitation and said plate width and Any plate-shaped hydroxyapatite material having a defined ratio of plate thickness can be used.

[0041] 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 p...

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PUM

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Abstract

The invention relates to a dental material preparation method utilizing osteoid nano particle for compound modification, belonging to the field of dentistry preparation. The invention aims at solving the problem that the current dental compound resin material used for filling tooth cavity needs to be further improved in wear-resisting property and toughness. The method of the invention includes: silane coupling agent is utilized for surface modification on nano inorganic powder, the modified nano inorganic powder is evenly mixed with materials of bisphenol A glycidyl methacrylate monomer, TEGDMA diluent, camphorquinone light trigger, dimethylamino ethyl methacrylate coinitator and the like under the condition of keeping out of the sun, and bubbles are excluded under vacuum. The key point of the invention lies in that the nano inorganic powder contains platy hydroxylapatite accounting for 10-80% of self weight percentage. The contained platy hydroxylapatite contributes to improving the wear-resisting property and the toughness of the material.

Description

technical field [0001] The invention relates to a preparation method of a dental material which is compounded and modified by using osteoid nanoparticles, and belongs to the field of A61K medical and dental preparations. Background technique [0002] In the existing commercially available single-paste light-cured dental composite resin materials for caries filling, the inorganic filler components added to increase the strength and wear resistance mostly use amorphous particles, and the amorphous particles are contained in the composite resin. It can play a role similar to spherical particles. On the surface layer of the dental composite resin cured by polymerization, the bonding surface between the amorphous particles and the resin matrix is ​​small, and the anchoring force is therefore weak, and it is easy to peel off during the friction process. This factor compromises the role of amorphous particles in improving the wear resistance of dental composite resins. On the other...

Claims

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Application Information

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IPC IPC(8): A61K6/083A61K6/033A61K6/04A61K6/838
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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