Dental Materials: Glass Ionomer Cements Quiz

<p>50µm (C)</p> Signup and view all the answers

<p>Fluoride ionic release (C)</p> Signup and view all the answers

<p>Citric acid (D)</p> Signup and view all the answers

<p>The type of rubber dam used (D)</p> Signup and view all the answers

<p>Strength increases with increased polyacid concentration (B)</p> Signup and view all the answers

<p>Type of glass utilized (D)</p> Signup and view all the answers

<p>Repair of crown margins (C)</p> Signup and view all the answers

<p>It becomes slightly darker (C)</p> Signup and view all the answers

<p>It leads to weaker, slower-setting cements (D)</p> Signup and view all the answers

<p>Vinyl phosphonic acid (D)</p> Signup and view all the answers

<p>Significantly affects working and setting time (B)</p> Signup and view all the answers

<p>Alumino-silicate glass (A)</p> Signup and view all the answers

<p>Aluminium ions (B)</p> Signup and view all the answers

<p>Calcium ions (C)</p> Signup and view all the answers

<p>Color change and crumbling (D)</p> Signup and view all the answers

<p>7 days (C)</p> Signup and view all the answers

<p>It minimizes the risk of dissolution and contamination (C)</p> Signup and view all the answers

<p>The composition of glass (A)</p> Signup and view all the answers

<p>Zinc-containing fillers (B)</p> Signup and view all the answers

<p>Loss of components (B)</p> Signup and view all the answers

<p>Handling characteristics (D)</p> Signup and view all the answers

<p>Calcium ions promote initial gelation while aluminium ions drive hardening (C)</p> Signup and view all the answers

<p>Distilled water (A)</p> Signup and view all the answers

<p>Difficulty in achieving the correct powder-to-liquid ratio (D)</p> Signup and view all the answers

<p>Acid-base reaction (A)</p> Signup and view all the answers

<p>Calcium ions are loosely bound in the glass structure (A)</p> Signup and view all the answers

<p>They can be considered wasteful (A)</p> Signup and view all the answers

<p>Sodium and fluorine ions (B)</p> Signup and view all the answers

<p>Evaporation (A)</p> Signup and view all the answers

<p>They deplete, leading to the formation of a silica gel (D)</p> Signup and view all the answers

<p>They require rigorous mixing to incorporate the powder (D)</p> Signup and view all the answers

<p>It affects the mechanical properties and setting time (A)</p> Signup and view all the answers

<p>They bond to enamel and dentin and release fluoride. (A)</p> Signup and view all the answers

<p>Zinc oxide (B)</p> Signup and view all the answers

<p>They provided a more complex formulation than zinc-phosphate cements. (A)</p> Signup and view all the answers

<p>It undergoes a melting and rapid cooling process. (A)</p> Signup and view all the answers

<p>RMGICs set with light activation. (B)</p> Signup and view all the answers

<p>Cavity bases and liners in deciduous dentition (A)</p> Signup and view all the answers

<p>The requirement for translucency. (D)</p> Signup and view all the answers

<p>ASPA (A)</p> Signup and view all the answers

<p>Polyacrylic acid (A)</p> Signup and view all the answers

Dental cements that release fluoride ions into the oral environment, potentially increasing enamel caries resistance.

The process of dental cements dissolving in the oral environment, which can be a negative effect.

A type of dental cement known for its fluoride release and adhesive properties.

The ability of GICs to bond directly to tooth structure without the need for a separate adhesive.

The strength of a material measured by its resistance to compression forces.

The strength of a material measured by its resistance to tensile forces.

Dental cements that come in different formulations, including powder-liquid, anhydrous, and encapsulated.

A dental cement containing zinc oxide powder and phosphoric acid liquid, known for its strength and ability to bond to tooth structure.

A type of dental cement using polyacrylic acid as a liquid component, producing a strong bond to tooth enamel.

A dental cement that relies on a chemical reaction between an alumino-silicate glass powder and a liquid polyacid to set.

The concentration of polyacrylic acid in the liquid component of a GIC, influencing its strength and setting characteristics.

The size of glass particles used in GICs, impacting the cement's smoothness, handling, and release properties.

The precise chemical composition of the glass powder used in GICs, directly influencing the cement's strength, fluoride release, and aesthetics.

The addition of tartaric acid to the liquid component of GICs crucial for controlling setting time and achieving the desired consistency.

The type of GIC where powder and liquid are mixed to form the cement.

The combination of aluminosilicate glass, polyacid powder, and tartaric acid. This blend is used in the powder form of anhydrous GICs.

Pre-proportioned capsules containing all the necessary components for a GIC mix. Simplifies the process but may be more expensive.

The method of mixing the components of a GIC where the powder and liquid are combined in a predetermined proportion to produce a desired consistency.

The chemical reaction that occurs when the acid component of the GIC reacts with the glass powder to form a hardened cement.

The initial stage of GIC setting where the acid dissolves the glass powder.

The second stage in the setting process where a gel-like structure begins to form within the mixture.

The final stage of GIC setting where the gel structure hardens into a solid, strong cement.

The process where the acid in the GIC reacts with the glass, breaking down its structure and releasing ions like calcium, aluminium, sodium, and fluoride.

The material resulting from the reaction between the acid and glass, contributing to the strength and properties of the final GIC.

The initial setting of GICs, where calcium ions rapidly react with the carboxyl groups of the acid, creating a gel-like structure.

The secondary stage of GIC setting, where aluminium ions gradually strengthen the cement. It takes longer, typically up to 7 days, to fully harden and gain strength.

The process where moisture, such as saliva or blood, can significantly affect the hardening process of GICs, potentially resulting in weakened cement.

The structural makeup of GIC, consisting of glass particles embedded in a matrix with interconnected polyacrylic acid chains.

The ability of GICs to slowly release calcium and aluminium ions into the surrounding environment.

The specific chemical composition of the glass powder used in GICs, which greatly influences the material's strength, fluoride release, and aesthetics.

The ability of GICs to dissolve within the oral environment, which is a negative factor to minimize.

The process of protecting GICs from outside contamination during the initial setting period to ensure proper hardening.

The importance of using GICs during the initial setting phase to prevent dissolution and contamination.

The characteristics of GIC that relate to how easy it is to handle, its resistance to dissolving in the mouth, how well it releases fluoride, and how pleasing it looks in the mouth.

A type of dental cement developed in the 1970s that releases fluoride and bonds directly to tooth structure.

The powder component of GICs, consisting mainly of silica, alumina, calcium fluoride, and other fluorides, heated to a high temperature, melted, cooled, and finely ground for use.

A polyacid solution, usually containing polyacrylic acid, used to react with the glass powder to set the GIC.

The chemical reaction between the glass powder and polyacid solution that creates GICs.

The ability of GICs to bond directly to tooth structure, eliminating the need for a separate adhesive.

The process by which GICs release fluoride ions into the oral environment, which can help strengthen enamel and prevent decay.

A type of GIC that also contains resin monomers, which can be activated by light, making the setting faster and stronger.

GICs are commonly used for restorations in areas like proximal lesions, occlusal restorations, and core materials.

Previous dental cements, like zinc-phosphate cements, used phosphoric acid. GICs replaced phosphoric acid with polyacrylic acid, offering improved bonding.

The composition of GIC glass can be varied, leading to numerous suitable combinations for copolymerization, unlike the fixed powder-to-liquid ratio of zinc-phosphate cements.