文献类型：期刊文献

英文题名：Anisotropic fatigue behavior of human enamel characterized by multi-cycling nanoindentation

作者：Jia, Yun-Fei[1];Xuan, Fu-Zhen[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Key Lab Pressure Syst & Safety, MOE, Shanghai 200237, Peoples R China

年份：2012

卷号：16

期号：1

起止页码：163

外文期刊名：JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS

收录：;EI(收录号：20130515951177);WOS:【SCI-EXPANDED(收录号:WOS:000313478400015)】；

基金：The authors are grateful for the supports provided by The National High Technology Research and Development Program of China (2012AA040106), National Key Technology R&D Program (2011BAK06B03) and the Natural Science Foundation of Shanghai (11JC1403200).

语种：英文

外文关键词：Multi-cycling nanoindentation; Fatigue; Enamel; Damage

摘要：Single- and multi-cycling nanoindentations were performed on occlusal surface and axial section of human enamel rod using Berkovich indenter. Deviation of load-depth curve under multi-cycle from single-cycle could indicate the anisotropic fatigue damage during repeated indentations. On occlusal surface, fatigue damage is ascribed to the partial interface debonding between crystals and protein and incomplete refolding of domain bonds of protein molecules. While on the axial section, additional damages, i.e., fracture of crystals and debonding at the end of crystals are supposed to be dominant. (c) 2012 Elsevier Ltd. All rights reserved.