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Related Experiment Videos

Dynamic mechanical thermal analysis of maxillofacial elastomers

M Waters1, R Jagger, G Polyzois

  • 1Department of Basic Dental Science, University of Wales College of Medicine, Dental School, Cardiff, United Kingdom.

The Journal of Prosthetic Dentistry
|December 17, 1997
PubMed
Summary

Dynamic mechanical thermal analysis revealed silicone rubber materials vary in flexibility and resilience. Silbione offers greater energy absorption and flexibility, crucial for maxillofacial prostheses.

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Area of Science:

  • Materials Science
  • Biomaterials Engineering
  • Prosthodontics

Background:

  • Maxillofacial prosthetic materials require flexibility and resilience to mimic oral tissues.
  • Dynamic deformation properties are critical due to constant oral tissue movement.

Purpose of the Study:

  • To evaluate the deformation properties of five silicone rubber materials for facial prostheses.
  • Utilizing dynamic mechanical thermal analysis (DMTA) to assess material response to stress.

Main Methods:

  • Dynamic Mechanical Thermal Analysis (DMTA) was employed.
  • Application of oscillating stress to analyze elastic and viscoelastic responses.
  • Testing across various frequencies, temperatures, and time.

Main Results:

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  • Cosmesil and A-2186 demonstrated superior resilience.
  • Silbione exhibited higher energy absorption, especially at elevated frequencies.
  • Silbione showed a lower shear modulus (G'), indicating greater flexibility.

Conclusions:

  • DMTA is an effective method for assessing maxillofacial material viscoelasticity.
  • Material selection impacts prosthetic performance based on dynamic properties.