Restorative Resins Flashcards

1
Q

attributes to resins

A
  1. easy to shape and polish
  2. can be made of various shades and translucencies
  3. generally non-soluble
  4. soft, non-damaging to opposing tooth
  5. biocompatible in cured form
  6. good insulators
  7. compatible with adhesives
  8. comfortble, no galvanic responses
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2
Q

limitations of resins

A
  1. low modulus
  2. low resistance to wear
  3. high coefficient of thermal expansion
  4. polymerization process causes shrinkage
  5. often porous and degradable
  6. can accumulate plaque and deposits
  7. may release residual monomers
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3
Q

reinforced acrylic aka

A

filled resin

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4
Q

T/f concrete is a composite

A

true - type of one

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5
Q

concrete characteristics

A
  1. made of sand and gravel bonded with cement and wate
  2. poor tensile strength
  3. good compressive strength
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6
Q

how to overcome weak tensile strenght of concrete

A

use reinforced concrete with the addition of steal to make tensile strength better

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7
Q

matrix phase description of dental resin composites

A

resin paste with easy handling, shaping, and fast curing at room temperature

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8
Q

filler phase of dental resin composites

A

particles to reduce shrinkage and thermal coefficient

must be optically and chemically compatible

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9
Q

dental resin initiators

A

Camphoroquinone (CQ)

Propane phenyldione (PPD)

both Blue visible light

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10
Q

visible light activation initiates? via?

A

Camphoroquinone (CQ)

- reacts with amine activator and forms free radicals to initiate the addition polymerization

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