山西医科大学学报2017，Vol.48Issue(10)：1075-1078,4.DOI:10.13753/j.issn.1007-6611.2017.10.022
多尺度下人牙釉质微观结构特性观察
The microstructure properties of human enamel on the multi-scale
摘要
Abstract
Objective To clarify the microstructure properties of human enamel on the micro-and nano-scale and analyze its effects on the mechanical properties.Methods The intact extracted maxillary third molars were embedded using epoxy resin and cut by the precision cutting machine.The thickness of transverse and longitudinal sections was 1 mm.The samples were observed using scanning electron microscope and transmission electron microscope after polishing or ion thinning.Results Under micro scale,the microstructure of enamel varied from the occlusion surface to the dentin-enamel junction.The rods arranged parallel to each other on the surface and the rods intercrossed on the dentin-enamel junction.Under nano scale,the hydroxyapatite(HA) crystals arrangement of head rods had better directionality than that of tail rods.Conclusion Under different scales,the enamel has diverse microstructures at the different location and it could affect the mechanical properties of tooth enamel.关键词
牙釉质/多尺度/微观结构/力学性能Key words
enamel/multi-scale/microstructure/mechanical properties分类
医药卫生引用本文复制引用
牛林,张辉,董少杰,王译婕,邹蕊..多尺度下人牙釉质微观结构特性观察[J].山西医科大学学报,2017,48(10):1075-1078,4.基金项目
国家自然科学基金青年项目(81100787) （81100787）
陕西省社会发展科技攻关项目(2016SF-236) （2016SF-236）
