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Updated: May 26, 2026
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A Testing Platform for Durability Studies of Polymers and Fiber-reinforced Polymer Composites under Concurrent Hygrothermo-mechanical Stimuli
Published on: December 11, 2014
Viscoelastic stability of resin-composites under static and dynamic loading
Muhammad Kaleem1, Konstantinos Masouras, Julian D Satterthwaite
1Biomaterials Research Group, School of Dentistry, University of Manchester, Manchester, UK. dr kaleem78@hotmail.com
Summary
This study found a strong correlation between static and dynamic creep in dental resin-composites. Dynamic creep strain strongly correlates with both maximum static creep strain and permanent set, indicating predictable viscoelastic behavior under different loading conditions.
Area of Science:
- Materials Science
- Biomaterials Engineering
- Dental Materials
Background:
- Dental resin-composites are widely used restorative materials.
- Understanding their viscoelastic behavior, specifically creep, is crucial for predicting long-term performance.
- Static and dynamic loading conditions can influence material response differently.
Purpose of the Study:
- To compare the viscoelastic behavior (creep) of dental resin-composites under static and cyclic loading.
- To investigate the correlation between static creep and dynamic creep in these materials.
Main Methods:
- Four commercial resin-composites were tested.
- Cylindrical specimens were subjected to static loading (35 MPa constant) and cyclic loading (1-50 MPa at 0.25 Hz).
- Creep strain and permanent set were measured, and regression analysis was used to assess correlations.
Main Results:
- A good correlation (r = 0.92) was observed between dynamic creep strain and maximum static creep strain.
- A strong correlation (r = 0.97) was found between dynamic creep strain and permanent set.
- Maximum static creep was significantly higher than dynamic creep.
Conclusions:
- Despite differences in loading modes and duration, static and dynamic creep measurements in dental resin-composites are strongly correlated.
- These findings suggest that dynamic creep testing can provide valuable insights into the viscoelastic properties of resin-composites relevant to static loading scenarios.
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