Flowable Composites in Dentistry
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Questions and Answers

What is the main advantage of flowable composites?

  • Decreased adaptability
  • Increased mechanical properties
  • Increased adaptability (correct)
  • Decreased elasticity

Which type of resin matrix is utilized in silorane resin composites?

  • Urethane resin matrix
  • Regular methyl methacrylate resin matrix
  • Polycarbonate resin matrix
  • Silorane resin matrix (correct)

What is the purpose of using a liner/base of flowable composites under other composites?

  • To decrease adaptability
  • To increase adaptability
  • To provide a hard layer
  • To provide an elastic layer to absorb shrinkage stresses (correct)

Which technique of polymerization is associated with using light to cure the composite material?

<p>Light cure composite (B)</p> Signup and view all the answers

What distinguishes bulk-fill composites from incrementally packed composites?

<p>Bulk-fill composites are filled in one go, while incrementally packed composites are built up incrementally (B)</p> Signup and view all the answers

Which resin composite type has superior wettability and adaptation compared to conventional methacrylate resins?

<p>Silorane resin composite (B)</p> Signup and view all the answers

Which type of composites is characterized by having small filler size but low mechanical properties due to high resin content?

<p>Microfilled composites (D)</p> Signup and view all the answers

What is a key advantage of packable composites?

<p>Good fracture resistance from large particle size (A)</p> Signup and view all the answers

What distinguishes packable composites from flowable composites?

<p>High filler loading and large particle size (A)</p> Signup and view all the answers

What is the main drawback of packable composites according to the text?

<p>Poor adaptation to cavity walls (B)</p> Signup and view all the answers

Which type of composites have a filler size below the wavelength range of visible light?

<p>Nanofilled composites (C)</p> Signup and view all the answers

What advantage do hybrid composites offer over microfilled composites?

<p>Improved esthetics combined with satisfactory mechanical properties (A)</p> Signup and view all the answers

What type of filler loading enhances the mechanical properties of a composite?

<p>Increased filler loading with very small particles (B)</p> Signup and view all the answers

Why is it difficult to load a composite with a large amount of small filler?

<p>It increases the surface area causing a marked increase in viscosity (C)</p> Signup and view all the answers

What is the function of a coupling agent in a composite material?

<p>Bind the filler particles to the organic resin matrix (C)</p> Signup and view all the answers

What is the role of the organo-silane used as a coupling agent?

<p>Bind the filler particles and copolymerize with the matrix monomers (B)</p> Signup and view all the answers

What type of composites are non-polishable due to their composition?

<p>Macrofilled composites (B)</p> Signup and view all the answers

Which classification of resin composites includes nanofilled composites?

<p>Nanofilled composites (C)</p> Signup and view all the answers

Flashcards

Flowable Composites Advantage

Increased adaptability to the shape of the cavity.

Silorane Resin Matrix

The type of resin used in silorane resin composites.

Liner/Base Purpose

Absorbs shrinkage stresses from the upper composite layers.

Light Cure Composite

Composite cured using light polymerization.

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Bulk-Fill vs. Incremental

Bulk-fill is placed in one layer, while incremental is placed in multiple layers.

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Silorane Resin Composite Wettability

Superior wettability and adaptation compared to methacrylate resins.

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Microfilled Composites

Contain small filler particles; low mechanical strength due to high resin content.

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Packable Composites Advantage

Good fracture resistance due to large particle size.

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Packable vs. Flowable Composites

Packable has high filler and larger particle size; flowable is more adaptable.

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Packable Composites Drawback

Poor adaptation to cavity walls.

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Nanofilled Composites Filler Size

Filler size smaller than the visible light wavelength.

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Hybrid Composites Advantage

Improved aesthetics and satisfactory mechanical properties.

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Increased Filler Loading Effect

Enhances mechanical properties when using small filler particles.

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High Filler Loading Difficulty

Increases viscosity due to large surface area.

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Coupling Agent Function

Binds filler particles to the resin matrix.

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Organo-Silane Role

Coupling agent that binds fillers and copolymerizes with matrix.

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Non-Polishable Composites

Macrofilled composites, due to their composition, cannot be polished.

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Nanofilled Composite Classification

A category of resin composites that include nanofilled composites, as specific type.

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