Multi-component composition for tooth sealing treatment

A closed treatment and composition technology, applied in dentistry, dental preparations, dental prostheses, etc., can solve problems such as unfavorable tight filling requirements, slurry shrinkage, etc., and achieve the effect of easy filling and good rheology

Active Publication Date: 2020-12-11
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the research on calcium phosphate self-curing material has a history of more than 30 years, it is mainly used for bone defect filling and repairing, and there are few research reports on root canal filling.
The reason is that calcium phosphate often undergoes in-situ phase inversion or dissolution-deposition reaction under suitable temperature and acid-base conditions, and the water is consumed in the hydration process (converted into crystal water or hydroxyl groups), resulting in the occurrence of slurry Shrinkage, which is extremely unfavorable for tight filling requirements

Method used

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  • Multi-component composition for tooth sealing treatment
  • Multi-component composition for tooth sealing treatment
  • Multi-component composition for tooth sealing treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Preparation of tooth sealant composition containing β-dicalcium silicate powder, α-tricalcium phosphate powder, and bioactive components of bioglass powder. The internal mesopore size of the bioglass is 40-48nm, and the mesopore size of the surface layer is 5-9nm, the component (mass percentage, %) list of composition is as follows:

[0080]

[0081] Among them, the content of free calcium oxide in the β-dicalcium silicate powder is 1.5%; the blending solution is prepared from the saturated supernatant of calcium hydrogen phosphate dihydrate and sodium silicate at a volume ratio of 1:0.2; the bioglass The mass percentage of each component in the powder is:

[0082] CaO 32%

[0083] SiO 2 52%;

[0084] P 2 o 5 6%;

[0085] CuO 1%;

[0086] ZnO 1%;

[0087] Na 2 O 2%;

[0088] K 2 O 6%;

[0089] Among them, the particle size distribution range of the mixture of bioactive components (β-dicalcium silicate, α-tricalcium phosphate, bioglass):

[0090] Below ...

Embodiment 2

[0097] Preparation of tooth sealant composition containing β-dicalcium silicate powder, α-tricalcium phosphate powder, and bioactive components of bioglass powder. The internal mesopore size of the bioglass is 36-42nm, and the mesopore size of the surface layer is 9-12nm, the component (mass percentage, %) list of composition is as follows:

[0098]

[0099] Among them, the content of free calcium oxide in the β-dicalcium silicate powder is 2.5%; The volume ratio is prepared; the mass percentage of each component in the biological glass powder is:

[0100] CaO 28%;

[0101] SiO 2 58%;

[0102] P 2 o 5 4%;

[0103] SrO 1%;

[0104] ZnO 2%;

[0105] Na 2 O 2%;

[0106] K 2 O 5%;

[0107] Among them, the particle size distribution range of the mixture of bioactive components (β-dicalcium silicate, α-tricalcium phosphate, bioglass):

[0108] Below 150 nanometers is 10% of the total;

[0109] The range of 150-600 nanometers is 45% of the total;

[0110] The rang...

Embodiment 3

[0113] Preparation of tooth sealant composition containing β-dicalcium silicate powder, α-tricalcium phosphate powder, and bioactive components of bioglass powder. The internal mesopore size of the bioglass is 32-38nm, and the mesopore size of the surface layer is 5-7nm, the component (mass percentage, %) list of composition is as follows:

[0114]

[0115] Among them, the content of free calcium oxide in the β-dicalcium silicate powder is 0.4%; the blend solution is prepared from the saturated supernatant of calcium hydrogen phosphate dihydrate and sodium silicate at a volume ratio of 1:1; the bioglass The mass percentage of each component in the powder is:

[0116] CaO 18%;

[0117] SiO 2 60%;

[0118] P 2 o 5 2%;

[0119] SrO 9%;

[0120] ZnO 1%;

[0121] CuO 2%;

[0122] K 2 O 7.9%;

[0123] Na 2 O 0.1%

[0124] Among them, the particle size distribution range of the mixture of bioactive components (β-dicalcium silicate, α-tricalcium phosphate, bioglass):...

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PUM

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Abstract

The invention discloses a multi-component composition for tooth sealing treatment. The composition comprises solid-phase powder and blending liquid, wherein the solid-phase powder contains a bioactivecomponent and an X-ray blocking agent component; the bioactive component contains the following chemical substances: 5-90 parts of beta-dicalcium silicate, 5-80 parts of alpha-tricalcium phosphate and 2-10 parts of bioglass; the solid-phase powder is nanoscale to micron-scale superfine powder, mesoporous structures exist in bioglass particles and on the surfaces of the bioglass particles, and thepore diameter of mesopores is 5-48 nanometers; and the blending liquid is an aqueous solution containing calcium ions, phosphate ions and / or silicate ions and the like. According to the multi-component composition for tooth sealing treatment, paste formed by mixing the solid-phase powder part with the blending liquid can be implanted into the root canal and periapical position of a tooth, then the paste can be automatically cured and seal the whole injury area, bacterial intervention can be prevented and treated, bleeding can be stopped, injury repair can be accelerated, and the composition has a great practical value.

Description

technical field [0001] The invention belongs to the field of oral care materials, and in particular relates to a multiple composition for tooth sealing treatment. Background technique [0002] The root canal and periapical of the tooth cause intermittent sharp pain due to bacterial infection. Infectious pain in the root canal system is usually not diagnosed as a tooth defect. Once the painful tooth is pulled out and the artificial tooth is planted, it will cause a huge medical cost, and the service life of the artificial tooth is limited. There are also postoperative inflammatory reactions, Therefore, thorough root canal cleaning, effective disinfection, and tight filling are the best options to solve this kind of pain and achieve tooth preservation. [0003] As we all know, root canal therapy is the first choice for tooth preservation for irreducible pulpitis, pulp necrosis and periapical disease, and its effect depends on thorough root canal cleaning, effective root canal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K6/838A61K6/831A61K6/16A61K6/54A61K6/69
Inventor 苟中入杨贤燕
Owner ZHEJIANG UNIV
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