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Related Concept Videos

Types of Cement I01:21

Types of Cement I

Portland cement comes in several types, each with distinct properties and applications based on their chemical composition and hydration characteristics:
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
Soundness of Cement01:17

Soundness of Cement

The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create ettringite,...
Porosity in Cement Paste01:18

Porosity in Cement Paste

The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is critical—it...
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...
Types of Cement II01:22

Types of Cement II

Portland blast-furnace cement is made by blending Portland cement clinker with granulated blast-furnace slag, which accounts for 25 to 65 percent of the cement's weight. Despite its similarities to ordinary Portland (Type I) cement in terms of fineness and setting times, its early strength is lower, though it achieves comparable strength later on. It's particularly suited for mass concrete structures and marine environments due to its lower heat of hydration and superior sulfate resistance.

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Related Experiment Video

Updated: May 14, 2026

Using Baseplating and a Miniscope Preanchored with an Objective Lens for Calcium Transient Research in Mice
06:23

Using Baseplating and a Miniscope Preanchored with an Objective Lens for Calcium Transient Research in Mice

Published on: June 5, 2021

Clinical case reports using a novel calcium-based cement.

I K Bachoo1, D Seymour, P Brunton

  • 1Restorative Dentistry, Leeds Dental Institute. ishpinder.bachoo@gmail.com

British Dental Journal
|January 26, 2013
PubMed
Summary
This summary is machine-generated.

A new calcium-based cement shows promise as a bioactive dentine substitute. Clinical cases demonstrate its potential for dental tissue repair and pulp healing in endodontic treatments.

Related Experiment Videos

Last Updated: May 14, 2026

Using Baseplating and a Miniscope Preanchored with an Objective Lens for Calcium Transient Research in Mice
06:23

Using Baseplating and a Miniscope Preanchored with an Objective Lens for Calcium Transient Research in Mice

Published on: June 5, 2021

Area of Science:

  • Biomaterials Science
  • Dental Regenerative Medicine
  • Endodontics

Background:

  • Introduction of a novel calcium-based cement in 2009.
  • Claimed properties include bioactivity, biocompatibility, and dentine replacement.
  • Potential to encourage dental tissue repair and regeneration.

Observation:

  • Two clinical cases utilizing the novel calcium-based cement for endodontic purposes.
  • Assessment of the material's performance in real-world clinical scenarios.
  • Evaluation of its effects on pulp vitality and healing.

Findings:

  • The calcium-based cement acts as a bioactive substitute for natural dentine.
  • Reported to promote healing and preserve pulp vitality.
  • Demonstrated potential in facilitating the repair of lost dental tissues.

Implications:

  • Suggests a revolutionary approach to endodontic treatment.
  • Highlights the potential of bioactive cements in restorative dentistry.
  • Offers a promising alternative for preserving natural tooth structure and function.