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To investigate the role of different environments in regulating the mechanical behaviour of mature human enamel.Healthy enamel samples were subjected to different environmental treatments such as ethanol dehydration, water re-hydration, desiccation at room temperature, and after heating (burnt) to 300°C. Nanoindentation tests were done on all samples for determination of elastic modulus, hardness...
Nano-indentation with a sharp (Berkovich) and two spherical indenters with nominal tip radii of 5 and 20μm was used to determine the elastic modulus and stress–strain response of human enamel. Indentation tests were made over a wide range of peak loads from 1 to 450mN in two orthogonal directions, i.e., parallel and perpendicular to enamel prisms. The elastic modulus and hardness (mean contact pressure)...
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