Endodontic Cements and Sealers
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Questions and Answers

What is the primary function of a root canal sealer in terms of filling material and dentin?

  • To act as a lubricant for the seating of filling cones
  • To create a hermetic seal
  • To fill irregularities and minor discrepancies between the filling material and dentin (correct)
  • To provide antibacterial properties

What is a requirement of an ideal root canal sealer?

  • It should be brittle when mixed
  • It should be insoluble in oral and tissue fluids (correct)
  • It should be non-radiopaque
  • It should have a low workable time

What is the purpose of a root canal sealer in relation to accessory canals and multiple foramina?

  • To provide antibacterial properties
  • To fill patent accessory canals and multiple foramina (correct)
  • To act as a lubricant for the seating of filling cones
  • To create a hermetic seal

What is a characteristic of zinc-oxide eugenol based sealers?

<p>They have a reasonable seal and antimicrobial properties (C)</p> Signup and view all the answers

What is a requirement of an ideal root canal sealer in terms of its physical properties?

<p>It should be tacky when mixed to provide good adhesion to the canal wall (C)</p> Signup and view all the answers

What is a function of a root canal sealer in relation to periradicular tissue?

<p>To be non-irritating to periradicular tissue (B)</p> Signup and view all the answers

What is the primary advantage of using a self-adhesive sealer?

<p>Reducing application time and errors (B)</p> Signup and view all the answers

Which type of sealer is known for its 0.2% expansion on setting, rather than polymerization shrinkage?

<p>Silicone-based sealer (A)</p> Signup and view all the answers

What is the primary disadvantage of using polycarboxylate cements as root canal sealers?

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

What is the ideal outcome of an endodontic treatment?

<p>Hard tissue closure (B)</p> Signup and view all the answers

What is the primary function of a root canal sealer?

<p>To permanently separate the root canal content from the periapical tissues (A)</p> Signup and view all the answers

What is a key requirement for an ideal root canal sealer?

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

What is one of the advantages of calcium hydroxide sealers?

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

What type of root canal sealer is Diaket?

<p>Polyvinyl resin sealer (B)</p> Signup and view all the answers

What is a disadvantage of medicated sealers?

<p>They dissolve, breaking the seal (D)</p> Signup and view all the answers

What is a unique property of glass-ionomer sealers?

<p>All of the above (D)</p> Signup and view all the answers

What is the catalyst in AH26 epoxy resin sealer?

<p>Hexamethylene-tetramine (D)</p> Signup and view all the answers

What is a characteristic of resin sealers?

<p>They contract slightly while setting (A)</p> Signup and view all the answers

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