Dental Cement
Dental Cement - Related Videos
07:57
Accuracy in Dental Medicine, A New Way to Measure Trueness and Precision
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Accuracy is a major demand in dental medicine. To verify accuracy, reference scanners are needed. This article presents a new reference scanner with an adjusted scanning method to acquire a broad variety of dental morphologies with high trueness and precision.
01:24
Hydration of Cement
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2024
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...
01:17
Soundness of Cement
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2024
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,...
07:42
Detecting the Water-soluble Chloride Distribution of Cement Paste in a High-precision Way
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Cited by 3 •
2017
A protocol for obtaining a water-soluble chloride profile by using a high precision milling method is presented.
01:21
Portland Cement
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2024
Portland cement is the essential binding ingredient in concrete, made from finely ground materials including lime, iron, silica, and alumina. Lime is derived primarily from limestone, marble, marl, seashells, and clays, which also supply iron and alumina, while silica is sourced from sand, chalk, and bauxite. Contemporary manufacturing of Portland cement is a significant source of carbon dioxide emissions, prompting research into reducing its content in concrete through alternative...
FAQs
Hardening chemistry determines both the cement’s setting behavior and the matrix it forms. Glass ionomer and zinc phosphate use acid-base reactions, resin cements harden through polymerization, and some formulations rely on hydration. These routes produce different material structures, so formulation influences adhesion, strength, solubility, fluoride release, and compatibility with oral tissues.
Moisture tolerance is important because the cement must function in the oral environment while contacting enamel, dentin, metal, ceramic, or resin. Adhesion to these substrates affects how effectively a restoration or appliance remains sealed or supported. The balance between bonding, resistance to chewing forces, and tissue compatibility helps determine whether a formulation suits a particular use.
These cement classes provide different combinations of strength, fluoride release, solubility, adhesion, and biocompatibility. Their differences arise from both formulation and setting mechanism, including acid-base reactions and polymerization. Consequently, no single type is optimal for every dental purpose; selection depends on the required balance between mechanical support, sealing, tissue compatibility, and environmental resistance.
Selection should consider the cement’s intended role, the materials it must contact, and the conditions it must withstand. A formulation used with enamel or dentin may require different properties from one contacting metal, ceramic, or resin. Researchers and dental professionals also weigh moisture tolerance, chewing forces, adhesion, solubility, fluoride release, and biocompatibility.
Its role can be adapted to the clinical need: bonding a restoration, sealing an interface, lining a prepared area, or providing temporary support for a restoration or appliance. These uses place different demands on the material. Matching the formulation to the intended function can help protect underlying tissues while supporting restoration performance and longevity.
Dental cement links material behavior with oral biology because the hardened matrix interacts with tooth tissues and must remain compatible with the surrounding environment. Properties such as adhesion, solubility, fluoride release, and biocompatibility influence how the material performs near enamel, dentin, and underlying tissues. This connection guides research into more durable and tissue-compatible restorative treatments.