Microtribological behaviour of human tooth enamel and artificial hydroxyapatite
Tribology International(2013)
Abstract
The microtribological behaviour of human tooth enamel and artificial hydroxyapatite has been studied and compared in this paper using a nano-scratch tester, aiming to extend the understanding of the wear mechanism of enamel. Results showed that the microtribological behaviour of enamel differed obviously from that of artificial hydroxyapatite. Compared with the artificial hydroxyapatite, more significant plastic deformation happened to the enamel under low loads, but no brittle delamination mechanism occurred even under high loads. Enamel microstructure plays an extremely significant role in its microtribological behaviour. The results would be helpful for the development of new dental restorative materials.
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Key words
Human tooth enamel,Artificial hydroxyapatite,Microtribological behaviour
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