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
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.
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:
- 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.