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18 Questions

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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?

They have a reasonable seal and antimicrobial properties Signup and view all the answers

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

It should be tacky when mixed to provide good adhesion to the canal wall Signup and view all the answers

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

To be non-irritating to periradicular tissue Signup and view all the answers

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

Reducing application time and errors Signup and view all the answers

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

Silicone-based sealer Signup and view all the answers

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

Viscosity Signup and view all the answers

What is the ideal outcome of an endodontic treatment?

Hard tissue closure Signup and view all the answers

What is the primary function of a root canal sealer?

To permanently separate the root canal content from the periapical tissues Signup and view all the answers

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

Biocompatibility Signup and view all the answers

What is one of the advantages of calcium hydroxide sealers?

Osteogenic effect Signup and view all the answers

What type of root canal sealer is Diaket?

Polyvinyl resin sealer Signup and view all the answers

What is a disadvantage of medicated sealers?

They dissolve, breaking the seal Signup and view all the answers

What is a unique property of glass-ionomer sealers?

All of the above Signup and view all the answers

What is the catalyst in AH26 epoxy resin sealer?

Hexamethylene-tetramine Signup and view all the answers

What is a characteristic of resin sealers?

They contract slightly while setting Signup and view all the answers