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Quick-solidification anti-collapse dental filling material

A dental filling material and rapid curing technology, applied in dentistry, dental preparations, dental prostheses, etc., can solve the problems of increasing the number of patient visits, increasing the risk of oral tissue, and easy dissociation of solid particles, so as to improve the efficacy of root canal treatment, Excellent apatite forming ability and the effect of improving the erosion ability of foreign liquid phase

Active Publication Date: 2019-08-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are still some defects and deficiencies in the clinical use of traditional MTA products
First, the curing time is longer, which not only prolongs the treatment time and increases the number of patient visits, but also may cause the slurry to shift before curing, which in turn increases the risk of infection of the oral tissue by the uncured paste
Second, the anti-collapse performance is poor. When the freshly mixed paste slurry is exposed to blood or other tissue fluids, it will collapse, and the solid particles are easy to dissociate.
However, so far there has been no report on the use of disodium hydrogen phosphate powder as an anti-collapse material to improve the anti-collapse performance of calcium silicate paste and apply it to dental filling materials

Method used

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  • Quick-solidification anti-collapse dental filling material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 4.5g of tricalcium silicate powder and 0.5g of disodium hydrogen phosphate, and mix them uniformly; weigh 0.1g of polycarboxylic acid and dissolve in 9.9g of deionized water to obtain a blend solution. Then fully blend the solid phase powder and liquid phase at a liquid-solid ratio of 0.5, inject the mold into the mold, and obtain the filling material and maintain it at 37°C.

[0037] The solidification time of the composite slurry was measured by a penetrometer, and the results were as follows: figure 1 Shown in B, compared with comparative example 1, the curing time of composite slurry is reduced to 76 minutes by 169 minutes of comparative example, and this result shows that introducing disodium hydrogen phosphate can significantly reduce the curing time of this composite material.

Embodiment 2

[0039] Weigh 4g of tricalcium silicate powder and 1g of disodium hydrogen phosphate, and mix them uniformly; weigh 0.05g of polycarboxylic acid and dissolve in 4.95g of deionized water to obtain a blended solution. Then fully blend the solid phase powder and liquid phase at a liquid-solid ratio of 0.5, inject the mold into the mold, and obtain the filling material and maintain it at 37°C.

[0040] The solidification time of the composite slurry was measured by a penetrometer, and the results were as follows: figure 1 Shown in C, compared with comparative example 1, the solidification time of composite slurry is reduced to 41 minutes by 169 minutes of comparative example, and this result shows that introducing disodium hydrogen phosphate can significantly reduce the solidification time of this composite material.

[0041] Prepare the newly prepared composite paste slurry into a circular sample block, and then soak it in the liquid phase to observe whether the composite slurry c...

Embodiment 3

[0043] Weigh 3.5g of tricalcium silicate powder and 1.5g of disodium hydrogen phosphate, and mix them uniformly; weigh 0.04g of polycarboxylic acid and dissolve in 3.96g of deionized water to obtain a blend solution. Then fully blend the solid phase powder and liquid phase at a liquid-solid ratio of 0.5, inject the mold into the mold, and obtain the filling material and maintain it at 37°C.

[0044] The solidification time of the composite slurry was measured by a penetrometer, and the results were as follows: figure 1 As shown in D, compared with Comparative Example 1, the curing time of the composite slurry was reduced from 169 minutes to 33 minutes. This result shows that the introduction of disodium hydrogen phosphate can significantly reduce the curing time of the composite material.

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Abstract

The invention discloses a quick-solidification anti-collapse dental filling material, and belongs to the field of biomedical materials. The dental filling material comprises a solid phase component and a liquid phase component, wherein the solid phase comprises at least one of calcium silicate compound, a quick-solidification anti-collapse agent and an X-ray retardant; the liquid phase is an aqueous phase based on distilled water or deionized water. In the quick-solidification anti-collapse dental filling material, disodium hydrogen phosphate powder is used as a quick-solidification anti-collapse agent. The composite material not only has excellent anti-collapse performance, but also has short solidification time, can induce hydroxyapatite deposition, and forms close fit with the root canal wall. Compared with prior materials, the material of the invention has the characteristics of rapid solidification, excellent anti-collapse property, edge sealing property, biological activity and the like.

Description

technical field [0001] The invention relates to the field of biomedical materials, in particular to a fast-curing and anti-collapse dental filling material. Background technique [0002] In recent years, calcium silicate bioactive materials, such as calcium silicate, dicalcium silicate, and tricalcium silicate, have been widely used due to their inherent self-curing properties, sufficient physical and mechanical properties, and excellent biocompatibility and bioactivity, etc. , widely used as bone tissue repair and dental filling materials. Mineral Trioxide Aggregate (MTA, Mineral Trioxide Aggregate) is a new type of calcium silicate-based dental filling material, first reported by American scholars Seung-Jong Lee and Mahmoud Torabinejad in 1993, and applied for a patent in 1995, and was granted by the United States in 1998. FDA approved for clinical use in the treatment of endodontic diseases. MTA is mainly composed of tricalcium silicate, dicalcium silicate, tricalcium a...

Claims

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Application Information

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IPC IPC(8): A61K6/033A61K6/027A61K6/00A61K6/838
CPCA61K6/54A61K6/15A61K6/70A61K6/838A61K6/831
Inventor 汪涛吴蒙聂云鹏张悦查伟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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