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Preparation method for decayed tooth filling and repairing material

A technology for repairing materials and dental caries, which is applied in the field of preparation of dental caries filling and repairing materials, which can solve problems such as recurrence of dental caries, achieve the effects of reducing incidence, achieving remineralization, and reducing acid production capacity

Inactive Publication Date: 2017-12-01
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the current dental caries repair materials are more effective in repairing caries cavities or tooth defects, but cannot prevent the recurrence of dental caries, the present invention provides a preparation method of dental caries filling and repairing materials. The invention uses fresh bovine bone as raw material to prepare natural hydroxyapatite powder, and compound it with casein phosphopeptide, then roughen the surface of silicate glass powder with hydrofluoric acid, and compound it with nano titanium dioxide and aluminum fluoride , to obtain a modified glass powder with good antibacterial properties, and finally the modified glass powder is ball-milled with polyacrylic acid, itaconic acid, calcium fluoride, etc. filling repair material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] Weigh 1 kg of fresh bovine bone, place it in a drying oven, and dry it to constant weight at 105°C, then put the dried bovine bone into a pulverizer for crushing, pass through a 60-mesh sieve, and place the sieved bovine bone particles Calcined at 600°C for 1 hour in a muffle furnace, cooled to room temperature, then transferred the calcined product and 100g of casein phosphopeptide into a ball mill, milled at 300r / min for 30min, and passed through a 200-mesh sieve to obtain compound natural hydroxyphosphorus Limestone powder; weigh 100g of silicate glass powder, place in 1.5L deionized water for 20min, then add 80mL of hydrofluoric acid with a mass fraction of 40%, stir at 300r / min for 6h, then transfer to a centrifuge, / min centrifuged for 10 min, collected the precipitate, washed the precipitate with deionized water 3 times, then placed the precipitate in a drying oven, and dried it to constant weight at 110°C to obtain a surface-roughened glass powder; the above-ment...

example 2

[0018]Weigh 2 kg of fresh bovine bone, place it in a drying oven, and dry it to constant weight at 108°C, then put the dried bovine bone into a pulverizer for crushing, pass through a 60-mesh sieve, and place the sieved bovine bone particles Calcined in a muffle furnace at 650°C for 1 hour, cooled to room temperature, then transferred the calcined product and 150g of casein phosphopeptide into a ball mill, ball milled at 350r / min for 35min, and passed through a 200-mesh sieve to obtain compound natural hydroxyphosphorus Limestone powder; weigh 150g of silicate glass powder, place in 1.9L deionized water for 25min, then add 88mL of hydrofluoric acid with a mass fraction of 40%, stir at 350r / min for 8h, then transfer to a centrifuge, / min centrifuged for 11min, collected the precipitate, washed the precipitate with deionized water 4 times, then placed the precipitate in a drying oven, and dried it to constant weight at 115°C to obtain a surface-roughened glass powder; the above-m...

example 3

[0021] Weigh 2 kg of fresh bovine bone, place it in a drying oven, and dry it to constant weight at 110°C, then put the dried bovine bone into a pulverizer for crushing, pass through a 60-mesh sieve, and place the sieved bovine bone particles In a muffle furnace, calcined at 700°C for 2 hours, cooled to room temperature, then transferred the calcined product and 200g of casein phosphopeptide into a ball mill, ball milled at 400r / min for 40min, and passed through a 200-mesh sieve to obtain the compound natural hydroxyphosphorus Limestone powder; weigh 200g of silicate glass powder, place in 3.0L deionized water for 30min, then add 100mL of hydrofluoric acid with a mass fraction of 40%, stir at 400r / min for 10h, then transfer to a centrifuge, / min centrifugation for 12min, collect the precipitate, wash the precipitate with deionized water 5 times, then place the precipitate in a drying oven, and dry it to constant weight at 120°C to obtain a surface-roughened glass powder; the ab...

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Abstract

The invention relates to a preparation method for a decayed tooth filling and repairing material and belongs to the technical field of dentistry restoring. According to the preparation method for the decayed tooth filling and repairing material, fresh ox bones serve as raw materials to prepare natural hydroxyapatite powder, and the natural hydroxyapatite powder is combined with casein phosphopeptides; then silicate glass powder is subjected to hydrofluoric acid surface roughing treatment, nanometer titanium dioxide and aluminum fluoride are used to be combined with the silicate glass powder, and modified glass powder with a good antibacterial property is prepared; and finally the modified glass powder, polyacrylic acid, itaconic acid, calcium fluoride and the like are ball-milled into a cement, and the cement and the composite natural hydroxyapatite powder are ball-milled to prepare the decayed tooth filling and repairing material. According to the preparation method for the decayed tooth filling and repairing material, the antibacterial property is improved through titanium dioxide and fluoride ions, and the cementation property of the cement is improved, so that the prepared decayed tooth filling and repairing material is tightly attached to the dentin surface, a hydroxyapatite layer is deposited, dentin remineralization is achieved, a firm and compact protective layer is formed, and decayed teeth are effectively restored.

Description

technical field [0001] The invention relates to a method for preparing a caries filling and repairing material, which belongs to the technical field of dental restoration. Background technique [0002] The population of our country is still in the process of slow growth. Along with the development of the economy, the improvement of people's education level and the emphasis on child rearing, it can be seen that some success has been achieved in the control of dental caries in children. Caries is a potential factor of many serious oral diseases. The earlier it is found, the more effective its control and treatment will be. Therefore, it is necessary to study various common oral pathogenic bacteria that cause caries. While controlling oral pathogenic bacteria, it is also necessary to promote remineralization to repair the damaged glaze as soon as possible for the early caries caused by them, so as to better reduce the harm caused by caries. [0003] Caries is a chronic destruc...

Claims

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Application Information

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IPC IPC(8): A61K6/02A61K6/027A61K6/033A61K6/083A61K6/838
CPCA61K6/80A61K6/836A61K6/838A61K6/889
Inventor 陈毅忠杨阳
Owner CHANGZHOU UNIV
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