関連する実験動画

Updated: Sep 10, 2025

Accessing the Cytotoxicity and Cell Response to Biomaterials
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Published on: July 8, 2021

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カルシウムシリケートベースの歯科用バイオマテリアルの水分化に対する灌溶液の影響:in vitro研究

Pradeep M Divya1, Amit Jena1, Saumyakanta Mohanty1

  • 1Department of Conservative Dentistry and Endodontics, Srirama Chandra Bhanja Dental College and Hospital, Cuttack, Odisha, India.

Journal of conservative dentistry and endodontics
|August 27, 2025
PubMed
まとめ

チトサンベースの内放射性不透明溶液 (CERS) とトリカルシウムシリケートシーラーからの塩素強化カルシウムイオン放出. 塩化ナトリウムとエチドロン酸の溶液は,この放出を減少させ,シーラー生物活性に影響を与えた.

キーワード:
エチドロン酸水分補給性能について根管灌剤根管シールスキャニング電子顕微鏡ナトリウムヒポクロライトトリカルシウムシリケートシーラー

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Hydration of Cement01:24

Hydration of Cement

Hydration of cement is a chemical reaction between cement particles and water. This process occurs primarily through two mechanisms: through-solution and topochemical. In the through-solution process, anhydrous compounds dissolve into their constituents, hydrates form in the solution, and then precipitate from the supersaturated solution. The topochemical process involves solid-state reactions at the cement particle surface. The through-solution process dominates the topochemical process at the...
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Strength and Heat of Hydration01:29

Strength and Heat of Hydration

The hydration of cement is an exothermic reaction in which heat is generated as cement hydrates. This heat of hydration is critical to cement's strength development. The rate at which this heat is generated affects the temperature rise, with a majority of the heat being released early in the hydration process, half within the first three days, and about 75% within the first week.
The heat of hydration for each cement compound is significant; for instance, tricalcium aluminate (C3A) and...
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Factors Affecting Solubility

Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
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The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
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The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...
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