2)Dental Cements-II Traditional Classification of Glass Ionomer Cements
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What is the traditional classification of glass ionomer cements?

  • Type I, Type II.1, and Type II.2
  • Type I, Type II, Type III, Type IV, Type V, and Type VI
  • Type I - Luting, Type II - Restorative, and Type III - Liner or base (correct)
  • Type I, Type II, and Type III
  • Which component of the glass ionomer cement powder is the largest by percentage?

  • Aluminium fluoride
  • Alumina
  • Silica
  • Calcium fluoro-alumino-silicate (correct)
  • What is the recommended mixing time for glass ionomer cement?

  • 40-60 seconds (correct)
  • 60-90 seconds
  • 20-40 seconds
  • 90-120 seconds
  • Which component of the glass ionomer cement liquid is the largest by percentage?

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

    What is the working time for glass ionomer cement?

    <p>60-90 seconds</p> Signup and view all the answers

    Which of the following is not a traditional classification of glass ionomer cements?

    <p>Type IV - Fissure sealants</p> Signup and view all the answers

    What is the main purpose of a cavity varnish?

    <p>To act as a barrier and protect the tooth from chemical irritants from cements</p> Signup and view all the answers

    What is the main advantage of using a dual-cure resin cement system?

    <p>It can be polymerized by both chemical and light activation</p> Signup and view all the answers

    What is the main function of calcium hydroxide when used as a cavity liner?

    <p>To form a mechanical barrier on the dentin</p> Signup and view all the answers

    What is the main disadvantage of using calcium hydroxide as a cavity liner?

    <p>It has high solubility and can dissolve when exposed to the oral environment</p> Signup and view all the answers

    What is the main purpose of etching the tooth surface and the restoration surface before applying a resin cement?

    <p>To increase the strength of the bond between the tooth and the restoration</p> Signup and view all the answers

    What is the main function of a silane coupling agent when used in a resin cement system?

    <p>To create a chemical bond between the resin and the restoration surface</p> Signup and view all the answers

    What is the primary function of Glass Ionomer Cements?

    <p>To chemically bond to enamel and dentin</p> Signup and view all the answers

    What is a potential disadvantage of using Glass Ionomer Cements?

    <p>Water sensitivity during the setting phase</p> Signup and view all the answers

    What is the primary purpose of Resin Cements?

    <p>To cement inlays, crowns, and other appliances</p> Signup and view all the answers

    Which of the following is NOT a type of Resin Cement mentioned in the text?

    <p>Light-cured resin cements</p> Signup and view all the answers

    What is a key component of Filled Resin Cements?

    <p>Inorganic fillers like colloidal silica</p> Signup and view all the answers

    Which of the following is NOT mentioned as a clinical use of Resin Cements?

    <p>As a core build-up material</p> Signup and view all the answers

    What is the primary advantage of glass ionomer cement over other cements?

    <p>Good marginal seal</p> Signup and view all the answers

    Which cement type exhibits chemical bonding to both enamel and dentin?

    <p>Resin cements</p> Signup and view all the answers

    What is the primary disadvantage of resin cements compared to glass ionomer cements?

    <p>Low wear resistance</p> Signup and view all the answers

    What is the purpose of using a silane coupling agent in resin cement systems?

    <p>To promote adhesion</p> Signup and view all the answers

    Which type of resin cements is no longer used in modern dentistry?

    <p>Unfilled resin cements</p> Signup and view all the answers

    For what clinical use are resin cements commonly employed?

    <p>Cementation of orthodontic brackets</p> Signup and view all the answers

    What is the primary function of a cavity varnish?

    <p>To reduce microleakage</p> Signup and view all the answers

    What is the main purpose of etching the tooth surface and the restoration surface before applying a resin cement?

    <p>To improve the mechanical bond between the tooth and the restoration</p> Signup and view all the answers

    Which of the following is the main disadvantage of using calcium hydroxide as a cavity liner?

    <p>It has low strength and high solubility</p> Signup and view all the answers

    What is the primary function of a silane coupling agent when used in a resin cement system?

    <p>To form a chemical bond between the resin cement and the restoration surface</p> Signup and view all the answers

    What is the main advantage of using a dual-cure resin cement system?

    <p>It can be cured by both chemical and light polymerisation</p> Signup and view all the answers

    What is the primary purpose of Resin Cements?

    <p>To bond restorations to tooth structure</p> Signup and view all the answers

    What is the purpose of dividing the powder into two equal portions during the manipulation of glass ionomer cement?

    <p>To ensure proper mixing and incorporation of all powder particles.</p> Signup and view all the answers

    What is the significance of the loss of glossiness on the surface of the mixed glass ionomer cement?

    <p>It indicates the start of the setting reaction.</p> Signup and view all the answers

    Which component of the glass ionomer cement liquid serves as a chelating agent?

    <p>Tartaric acid</p> Signup and view all the answers

    What is the recommended maximum time for the mixing of glass ionomer cement?

    <p>40-60 seconds</p> Signup and view all the answers

    Which component of the glass ionomer cement powder serves as a source of fluoride ions?

    <p>Aluminium fluoride</p> Signup and view all the answers

    Which of the following statements about the manipulation of glass ionomer cement is correct?

    <p>The cement should be used before it loses its glossiness.</p> Signup and view all the answers

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