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Related Experiment Videos

Some parameters for testing deformation of elastomeric impression materials.

P A Blomberg1, S Mahmood, R J Smales

  • 1Department of Dentistry, University of Adelaide, South Australia.

Australian Dental Journal
|August 1, 1992
PubMed
Summary
This summary is machine-generated.

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Dental impression materials show a slight temperature rise during setting. Clinical temperature increases were higher in the molar region, impacting dental procedure effectiveness.

Area of Science:

  • Materials Science
  • Biomedical Engineering
  • Dental Materials

Background:

  • Conflicting data exists on the exothermic reaction of elastomeric impression materials.
  • Understanding temperature changes during setting is crucial for clinical success.

Purpose of the Study:

  • To measure the temperature rise of four elastomeric materials during setting.
  • To compare temperature variations in the oral cavity versus in vitro molds.
  • To investigate the influence of anatomical location and material viscosity on temperature.

Main Methods:

  • Utilized thermistors to record temperature changes in four elastomeric materials.
  • Specimens were set in the oral cavity and in metal/plastic molds of varying shapes and volumes.
  • Recorded clinical temperature rise in molar and anterior regions.

Related Experiment Videos

  • Analyzed the thickness of syringe materials in custom trays.

    • Main Results:

    • Clinical temperature rise was 2-3°C higher in the molar region compared to the anterior region, with polysiloxane as an exception.
    • The temperature range during setting varied from 29°C to nearly 35°C for both clinical and in vitro specimens.
    • The syringe material layer in custom trays was thin (0-0.15 mm), with heavy viscosity material forming the elastic impression components.

    Conclusions:

    • Dental impression material setting generates a clinically relevant temperature increase, particularly in posterior regions.
    • Material viscosity and placement location influence the exothermic reaction during dental impression procedures.
    • Accurate temperature monitoring is essential for optimizing the use of elastomeric impression materials in dentistry.