This paper presents results from investigating indentation impressions on human enamel under micro-hardness tests. The experiments of hardness testing were performed on a microhardness indentation machine under different loading conditions. Images of indentation impressions were obtained using an environmental scanning electron microscope. Geometrical shapes of hardness indentations were visualized in three-dimensional space using computer graphics. Quantitative information was obtained through atomic force measurements to characterize pile-up, sink-in, and elastic recovery of enamel. Special efforts have been made to study the microstructural effect of the calcified rods orientations on the fracture patterns after indentation.
| Number of Pages : | 6 |
| Published : | 06/01/1997 |
