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Related Experiment Videos

Consistency, working time and setting time of elastomeric impression materials.

K D Jamani1, E Harrington, H J Wilson

  • 1Department of Dental Prosthetics, University of Birmingham, U.K.

Journal of Oral Rehabilitation
|July 1, 1989
PubMed
Summary

A new instrument, the Comprheometer, accurately measures the consistency, working time, and setting time of elastomeric impression materials. This device aids in understanding material properties under simulated oral conditions.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Rheology

Background:

  • Elastomeric impression materials are crucial in dentistry for accurate prosthodontic and orthodontic restorations.
  • Existing methods for evaluating material properties like working and setting times can be inconsistent or lack simulation of oral conditions.

Purpose of the Study:

  • To develop and describe a novel instrument, the Comprheometer, for precise measurement of elastomeric impression material properties.
  • To evaluate the performance of the Comprheometer under controlled temperature conditions simulating intraoral environments.

Main Methods:

  • Development of the Comprheometer, an instrument applying fixed compressive strain and measuring resultant stress.
  • Implementation of a water circulation system for precise temperature control (simulating room and oral temperatures).

Related Experiment Videos

  • Testing a range of elastomeric impression materials to determine consistency, working time, and setting time.

    • Main Results:

    • The Comprheometer successfully measured consistency and working time for various elastomeric materials at room temperature.
    • Setting times were accurately recorded under simulated oral conditions, providing valuable clinical data.
    • The instrument demonstrated reliable performance in characterizing material rheological properties.

    Conclusions:

    • The Comprheometer is a validated instrument for assessing key physical properties of elastomeric impression materials.
    • This device offers a standardized method for evaluating material performance, aiding in material selection and quality control.
    • The ability to simulate oral conditions enhances the clinical relevance of the obtained material data.