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Root canal filling paste capable of being stored and injected

A paste-filled, injection-type technology, used in dental preparations, medical science, dentistry, etc., can solve the problems of affecting the performance of the paste, unable to completely seal the apical foramen, and expensive paste.

Inactive Publication Date: 2006-11-08
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the vast majority of root canal filling pastes currently used clinically are ready-to-use
Using these pastes for root canal filling surgery not only takes a lot of time for the doctor to prepare the paste, but also affects the performance of the paste due to human factors
Because the solid phase and liquid phase of most pastes are packaged in large packages, only a small amount of powder needs to be taken out for each use, and the ratio of the solid-liquid phase is often controlled by the personal experience of the dentist; moreover, temporary modulation It is also possible that the powder and liquid phases will not be fully mixed, resulting in uneven performance of the root canal filling paste and even failure of the root canal treatment
[0004] as Ca(OH) 2 with iodoform (CHI 3 ) as the main raw material of Vitapex  Paste (Harbert et al., Journal of Endodontics, 1996, 22(12): 690) does not require on-site adjustment, but Ca(OH) 2 It is a non-solid filling paste that cannot completely seal the apical foramen
And Vitapex  The paste is expensive and cannot be popularized in China in the short term

Method used

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  • Root canal filling paste capable of being stored and injected
  • Root canal filling paste capable of being stored and injected
  • Root canal filling paste capable of being stored and injected

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Get calcium phosphate powder 64g, iodoform 16g mix and make solid powder and divide into two parts of equal mass. Then 8.8g glycerol, 4g sorbitol, 1.4g chitosan oligosaccharide (molecular weight is less than 5000), 0.06gNa 2 HPO 4 Add it to 5.74g distilled water to prepare a solidified solution; another part of the solidified solution is a mixed aqueous solution that does not contain a thickener (oligochitosaccharide) and other solutes remain unchanged. Thoroughly mix the above two solutions and solid powder respectively to make a root canal filling paste, and pour it into a special syringe for root canal filling. After the paste was stored at 4°C and 50% RH for 7 days, the changes of the particles were observed with an environmental scanning electron microscope, and compared with the particles of the current paste. figure 1 It shows that the distance between the particles of the paste without the thickener becomes smaller, some particles are dissolved, and the partic...

Embodiment 2

[0022] Get calcium phosphate powder 1.8g, iodoform 1.2g mix and make solid powder. Then 0.55g glycerol, 0.03g sodium alginate, 0.05g chitosan oligosaccharide (molecular weight is less than 5000), 0.004gNa 2 HPO 4 Add to 0.366g of distilled water to prepare solidified liquid. Thoroughly mix the above powder and solidification solution to make a root canal filling paste, pour it into a special syringe for root canal filling, and store it in an environment of 4° C. and 50% RH. After two months, the properties of the root filling paste did not change, and the paste was injected into the prepared root canal, and the results showed that the filling effect was satisfactory.

Embodiment 3

[0024] Get calcium phosphate powder 2.4g, iodoform 0.6g mix and make solid powder. Then 2.5g polyethylene glycol 400, 0.05g sodium carboxymethylcellulose, 0.065g Na 2 HPO 4 , 0.01g NaH 2 PO 4 Add it to 2.375g distilled water to prepare a solidified liquid. Thoroughly mix the above powder with the solidification solution to make a root canal filling paste, pour it into a root canal filling syringe, and store it in an environment of 4° C. and 50% RH. After two months, the properties of the root filling paste did not change, and the paste was injected into the prepared root canal, and the results showed that the filling effect was satisfactory.

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Abstract

The present invention provides a kind of root canal filling paste with calcium phosphate bone cement as main material and capable of being stored at certain conditions without change in property and capable of being injected. The root canal filling paste consists of solid powder and curing liquid, the solid powder includes calcium phosphate powder and developing agent, and the curing liquid contains humectant, thickener, coagulant and water. The root canal filling paste compounded with the solid powder and the curing liquid is stored in an injector, and when it is used, the injector with root canal filling paste is set in the air for minutes for the paste to raise its temperature before being injected to root canal. The injected paste will solidify fast to convert into high strength hydroxyapatite. The present invention has less operation steps, shortened surgical operation period and raised root canal treating quality.

Description

technical field [0001] The invention relates to a root canal filling paste for dental treatment, in particular to a storable and injectable root canal filling paste. Background technique [0002] Root canal therapy (Root Canal Therapy, RCT) is an effective method for the treatment of various pulp diseases and periapical diseases. Its purpose is to remove inflammation and necrotic tissue and seal the entire system. The success or failure of root canal treatment is closely related to the material used to fill the root canal. At present, root canal filling materials mainly include three categories: solid, paste and liquid. Among them, there are many studies on root canal filling paste, and the development is relatively rapid. [0003] However, the vast majority of root canal filling pastes currently used clinically are ready-to-use. Using these pastes for root canal filling surgery not only takes a lot of time for doctors to prepare the paste, but also affects the performanc...

Claims

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Application Information

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IPC IPC(8): A61K6/838
Inventor 冯祖德宋玉兴
Owner XIAMEN UNIV
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