Related Experiment Videos
The elastic modulus of dentine determined by static and dynamic methods
J S Rees1, P H Jacobsen, J Hickman
1Department of Conservative Dentistry, University of Wales College of Medicine, Heath Park, Cardiff, UK.
Clinical Materials
|December 9, 1993
Summary
This study measured the static and dynamic elastic modulus of dentine. Dentine
Area of Science:
- Biomaterials Science
- Dental Materials Science
- Mechanical Engineering
Background:
- Dentine's mechanical properties are crucial for dental restorations.
- Understanding elastic modulus is key for material compatibility.
Purpose of the Study:
- To determine the static elastic modulus of dentine using a three-point beam test.
- To measure the dynamic elastic modulus of dentine across a frequency range (0.1-10 Hz) and temperature range (27-37°C).
Main Methods:
- Three-point beam test for static modulus.
- Dynamic mechanical analysis (DMA) for dynamic modulus at varying frequencies and temperatures.
- Statistical analysis of collected data.
Main Results:
- The mean static elastic modulus of dentine at body temperature was 8.6 GPa (SD 0.86 GPa).
- Dynamic modulus values ranged from 14.3 GPa at 0.1 Hz to 15.8 GPa at 10 Hz.
- Modulus increased with frequency within the tested range.
Conclusions:
- Dentine exhibits distinct static and dynamic elastic moduli.
- Results provide valuable data for designing and analyzing dental restorative materials.
- Temperature and frequency significantly influence dentine's dynamic mechanical behavior.