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Paint for repairing early-stage caries on enamel surface

A technology for tooth enamel and caries damage, applied in dental preparations, dentistry, dental prostheses, etc., can solve problems such as not very ideal methods, and achieve the effect of good hardness and wear resistance

Inactive Publication Date: 2009-05-20
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They are therefore not ideal for early caries
However, the tooth surface rapid repair slurry published by Yamagishi et al. in Japan's FAP Dental Institute in 2005 has a coating thickness of no more than 20 μm, which has certain limitations in clinical application.

Method used

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  • Paint for repairing early-stage caries on enamel surface
  • Paint for repairing early-stage caries on enamel surface
  • Paint for repairing early-stage caries on enamel surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Ca(NO 3 ) 2 4H 2 O (analytically pure) was dissolved in distilled water to make a 0.5mol / l solution, and H was added according to the Ca / P ratio 3 PO 4 (analytical pure), stir and mix evenly, add NH 3 ·H 2 O (analytically pure), adjust the pH value to about 10, vigorously stir for 30min, filter and wash, and irradiate the precipitate with microwave (Galanz 2450MHz 700W) to obtain white calcium-deficient hydroxyapatite solid, and its calcium-phosphorus ratio is 1.64. Grind it finely with a mortar and pestle to make it granule d 90 Below 20μm. Mix phosphoric acid with a concentration of 85% and hydrogen peroxide with a concentration of 30% in a volume ratio of 4:1 to obtain a mixed solution. Take 1.5g of solid powder, measure 4ml of mixed solution, mix it with solid powder, stir and mix evenly to form a paste, when mixing, a large amount of heat will be generated due to the effect of hydrogen peroxide, which will cause the temperature of the paste to rise sharply. ...

Embodiment 2

[0021] Take 2 g of the hydroxyapatite synthesized in Example 1, mix it with 0.2 mol / l NaF solution, heat it to 60° C., keep the temperature for 1 hour, partially fluorinate it, and filter and dry it. Get 1.5g of solid powder, measure 6ml of mixed solution, mix it with solid powder, stir and mix evenly, because a large amount of heat will be generated due to the effect of hydrogen peroxide during mixing, the paste temperature will rise sharply. The paste should be left in the air for a few minutes to cool to slightly above body temperature before use. The tooth surface treatment solution is formulated with 85% phosphoric acid and 30% hydrogen peroxide at a volume ratio of 1:4. First apply a layer of surface treatment liquid on the surface of the teeth for about 30 seconds. Before the treatment liquid dries, brush the paste on the surface of the teeth. Calcium hydrogen phosphate dihydrate coating can be obtained.

Embodiment 3

[0023] Get 1.5g of the solid powder of Example 1, measure 4ml of the mixed solution, mix it with the solid powder, stir and mix evenly, and prepare the tooth surface treatment solution with 85% concentration of phosphoric acid and 30% concentration of hydrogen peroxide in a volume ratio of 1:3 . Use a brush to apply a layer of surface treatment solution on the surface of the teeth for about 30 seconds. Before the treatment solution dries, brush the paste on the surface of the teeth. Calcium hydrogen phosphate dihydrate coating can be obtained.

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Abstract

The invention relates to an enamel surface repair coat, wherein it comprises slurry and surface treatment fluid; the slurry comprises solid powder and mixture solution at 0.1-2 ratio; the solid powder is calciprivia hydroxyl agustite or fluo-agustite, while the calcium-phosphor ratio is 1.5-1.67; the mixture solution is formed by phosphoric acid and hydrogen dioxide solution at 0.25-4 mass ratio; the surface treatment fluid comprises phosphoric acid and hydrogen dioxide solution at 0.25-1 ratio. In application, user mixes the solid powder and mixture solution into slurry; coats surface treatment fluid on the enamel surface, to pretreat the surface, the coats the slurry on the tooth; drying and washing, to obtain the calcium dihydrogenphosphate coat, with high rigidity and strong combination with enamel.

Description

technical field [0001] The invention relates to a dental restorative material, in particular to a varnish which can be used for early caries restoration on the surface of tooth enamel. Background technique [0002] Dental caries (Dental Caries) is the most common human disease, at least 50% of the inhabitants of the world, that is, about 3 billion people suffer from dental caries. And the incidence of dental caries is on the rise with the development of social economy and culture. The incidence of dental caries in developed countries is higher than that in developing countries, up to more than 90%. The World Health Organization (WHO) has now listed dental caries as one of the three major diseases affecting human health. With the continuous development of modern science, new dental restorative materials, restorative instruments, measuring instruments, etc. are constantly coming out, the huge achievements in the fields of marginal sciences and the accumulation of clinical exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K6/033A61K6/838
Inventor 冯祖德何立志
Owner XIAMEN UNIV