The elastic modulus of dentine determined by static and dynamic methods.
The purpose of this investigation was to determine a static elastic modulus of dentine using a three point beam test and a dynamic modulus in the frequency range of 0.1 Hz and 10 Hz across a temperature range of 27-37 degrees C. At body temperature, the mean static modulus was 8.6 GPa, (standard deviation 0.86 GPa). The dynamic test produced a range of modulus values. At 0.1 Hz the modulus ranged from 14.3 to 15.2 GPa; for 1.0 Hz the range was 14.6-15.5 GPa and for 10 Hz the range was 14.9-15.8 GPa. The results are of value in the design and analysis of restorative materials.
Department of Conservative Dentistry, University of Wales College of Medicine, Heath Park, Cardiff, UK.
J S
JS
Rees
P H
PH
Jacobsen
J
J
Hickman
D001696:Biomechanical Phenomena; D003793:Dental Restoration, Permanent; D003804:Dentin / Q000502:physiology*; D004548:Elasticity; D005069:Evaluation Studies as Topic; D006801:Humans; D008954:Models, Biological; D011312:Pressure; D013696:Temperature; D014102:Torsion Abnormality