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Related Experiment Videos

Compressive strength of interocclusal recording materials.

F Keyf1, S Altunsoy

  • 1Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

Brazilian Dental Journal
|February 24, 2001
PubMed
Summary

Dental articulators require strong interocclusal record materials to prevent deformation. Minimal thickness is recommended for condensation silicone, recording wax, and polyvinylsiloxane to ensure accurate occlusal relationships.

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Prosthodontics

Background:

  • Interocclusal records are crucial for mounting dental casts on articulators.
  • Material deformation during mounting can lead to inaccurate occlusal relationships.
  • Selecting appropriate interocclusal recording materials is vital for dental restorations.

Purpose of the Study:

  • To compare the compressive deformation of three common interocclusal recording materials.
  • To evaluate the influence of material thickness on deformation under a standardized compressive force.
  • To determine optimal material selection and thickness for accurate dental articulator mounting.

Main Methods:

  • Three interocclusal recording materials were tested: condensation silicone, recording wax, and rubber-based polyvinylsiloxane.

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  • Specimens of four different thicknesses (2 mm, 5 mm, 10 mm, 20 mm) were prepared.
  • A 25 N compressive force was applied to each specimen, and deformation was measured.

    • Main Results:

    • Significant differences in deformation were observed across various thicknesses for all tested materials (20 mm, 10 mm, 2 mm).
    • No significant difference in deformation was found among the 5 mm thick specimens of the tested materials.
    • Thicker specimens generally exhibited greater deformation under compressive force.

    Conclusions:

    • Interocclusal record materials should be selected based on their resistance to compressive deformation.
    • Minimal thickness of interocclusal records is recommended to minimize distortion.
    • The 5 mm thickness group showed comparable stability, suggesting a potential optimal range for certain materials.