11 Questions
What is the composition of the powder in polymer-reinforced cement?
80% ZnO, 20% PMMA
What is the composition of the liquid in polymer-reinforced cement?
90% eugenol oil, 10% polystyrene
What is the compressive strength of EBA cement?
85 MPa
What is the purpose of using zinc oxide non-eugenol cements for cementation of temporary restorations on teeth that will receive final ceramic restorations?
To ensure that the tooth surface will not contain any eugenol, which would inhibit the polymerization of the resin cements during final cementation
What is the purpose of adding resin and copolymers to the powder of EBA cement?
To decrease the brittleness
Which of the following is a use of zinc oxide non-eugenol cements?
Cementation of temporary restorations on teeth that will receive final ceramic restorations
How was the setting time of rapid set ZnO/E cement reduced?
By modifying the powder particle size and shape, increasing the recommended P/L ratio, and increasing the amount of accelerators
What is the main difference between polymer-reinforced cement and EBA cement?
Polymer-reinforced cement contains ZnO and PMMA, while EBA cement contains ZnO, alumina, and resin & copolymers
Which of the following is a use of both polymer-reinforced cement and EBA cement?
All of the above
What is the purpose of adding polystyrene to the liquid component of polymer-reinforced cement?
To increase the compressive strength
What is the main difference between polymer-reinforced cement and zinc oxide non-eugenol cements?
Zinc oxide non-eugenol cements are used for patients sensitive to eugenol, while polymer-reinforced cement is not
Learn about the composition and uses of Zinc oxide eugenol cement, Zinc phosphate cement, and Polycarboxylate cement commonly used in dentistry. Explore the main constituents and accelerators of each type of cement, as well as their applications in dental procedures.
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