Elastomeric (Rubber) Impression Materials - RIM
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Questions and Answers

What is the characteristic of elastomeric materials at a molecular level?

  • They have no interaction among molecules
  • They have strong interaction among molecules
  • They have small molecules with strong interaction among them
  • They have large molecules with weak interaction among them (correct)

    • What is the difference between elastomeric materials and hydrocolloid gels?

  • Elastomeric materials are thermoplastic, while hydrocolloid gels are thermoset
  • Elastomeric materials are hydrophilic, while hydrocolloid gels are hydrophobic
  • Elastomeric materials are thermoset, while hydrocolloid gels are thermoplastic
  • Elastomeric materials are hydrophobic, while hydrocolloid gels are hydrophilic (correct)

    • What is the classification of RIMs based on their properties?

  • Thermoplastic - Elastic IM
  • Thermoplastic - Rigid IM
  • Thermoset - Elastic IM (correct)
  • Thermoset - Rigid IM

    • What is the method of dispensing for silicone type of RIM?

    <p>Paste-liquid type</p> Signup and view all the answers

    Which of the following is NOT a use of RIMs?

    <p>Can be used for full mouth impression</p> Signup and view all the answers

    What is the reaction mechanism for the polymerization/cross-linking of RIMs?

    <p>Condensation reaction</p> Signup and view all the answers

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