36 Questions
What is the traditional classification of glass ionomer cements?
Type I - Luting, Type II - Restorative, and Type III - Liner or base
Which component of the glass ionomer cement powder is the largest by percentage?
Calcium fluoro-alumino-silicate
What is the recommended mixing time for glass ionomer cement?
40-60 seconds
Which component of the glass ionomer cement liquid is the largest by percentage?
Polyacrylic acid
What is the working time for glass ionomer cement?
60-90 seconds
Which of the following is not a traditional classification of glass ionomer cements?
Type IV - Fissure sealants
What is the main purpose of a cavity varnish?
To act as a barrier and protect the tooth from chemical irritants from cements
What is the main advantage of using a dual-cure resin cement system?
It can be polymerized by both chemical and light activation
What is the main function of calcium hydroxide when used as a cavity liner?
To form a mechanical barrier on the dentin
What is the main disadvantage of using calcium hydroxide as a cavity liner?
It has high solubility and can dissolve when exposed to the oral environment
What is the main purpose of etching the tooth surface and the restoration surface before applying a resin cement?
To increase the strength of the bond between the tooth and the restoration
What is the main function of a silane coupling agent when used in a resin cement system?
To create a chemical bond between the resin and the restoration surface
What is the primary function of Glass Ionomer Cements?
To chemically bond to enamel and dentin
What is a potential disadvantage of using Glass Ionomer Cements?
Water sensitivity during the setting phase
What is the primary purpose of Resin Cements?
To cement inlays, crowns, and other appliances
Which of the following is NOT a type of Resin Cement mentioned in the text?
Light-cured resin cements
What is a key component of Filled Resin Cements?
Inorganic fillers like colloidal silica
Which of the following is NOT mentioned as a clinical use of Resin Cements?
As a core build-up material
What is the primary advantage of glass ionomer cement over other cements?
Good marginal seal
Which cement type exhibits chemical bonding to both enamel and dentin?
Resin cements
What is the primary disadvantage of resin cements compared to glass ionomer cements?
Low wear resistance
What is the purpose of using a silane coupling agent in resin cement systems?
To promote adhesion
Which type of resin cements is no longer used in modern dentistry?
Unfilled resin cements
For what clinical use are resin cements commonly employed?
Cementation of orthodontic brackets
What is the primary function of a cavity varnish?
To reduce microleakage
What is the main purpose of etching the tooth surface and the restoration surface before applying a resin cement?
To improve the mechanical bond between the tooth and the restoration
Which of the following is the main disadvantage of using calcium hydroxide as a cavity liner?
It has low strength and high solubility
What is the primary function of a silane coupling agent when used in a resin cement system?
To form a chemical bond between the resin cement and the restoration surface
What is the main advantage of using a dual-cure resin cement system?
It can be cured by both chemical and light polymerisation
What is the primary purpose of Resin Cements?
To bond restorations to tooth structure
What is the purpose of dividing the powder into two equal portions during the manipulation of glass ionomer cement?
To ensure proper mixing and incorporation of all powder particles.
What is the significance of the loss of glossiness on the surface of the mixed glass ionomer cement?
It indicates the start of the setting reaction.
Which component of the glass ionomer cement liquid serves as a chelating agent?
Tartaric acid
What is the recommended maximum time for the mixing of glass ionomer cement?
40-60 seconds
Which component of the glass ionomer cement powder serves as a source of fluoride ions?
Aluminium fluoride
Which of the following statements about the manipulation of glass ionomer cement is correct?
The cement should be used before it loses its glossiness.
Learn about the traditional classification of glass ionomer cements including Type I for luting cements, Type II for restorative cements, Type II.1 for restorative esthetic, Type II.2 for restorative reinforced, Type III for liner or base. Explore the classification of GIC based on their use such as Type I for luting cements, Type II for restorations, Type III for liners and bases, Type IV for fissure sealants, and Type V for orthodontic applications.
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