三种哺乳动物牙釉质超微结构与硬度关系的初步研究  

PRELIMINARY STUDY OF THE RELATION BETWEEN SUPER-MICROSTRUCTURE AND HARDNESS OF TOOTH ENAMEL SURFACE OF THREE KINDS OF MAMMALS

作　　者：黄炎[1] 吕晓迎[1] 陈亚明[2] 王学发[2] 张志强[3] 张卫兵[2] 

机构地区：[1]东南大学分子与生物分子电子学教育部重点实验室,南京210096 [2]南京医科大学附属口腔医院,南京210029 [3]东南大学校医院口腔科,南京210096

出　　处：《中国生物医学工程学报》2004年第3期265-269,共5页Chinese Journal of Biomedical Engineering

基　　金：国家自然科学基金资助项目 ( 3 0 2 70 3 91;60 12 110 1)

摘　　要：应用原子力显微镜 (AFM)和扫描电镜 (SEM )对三种哺乳动物牙釉质超微结构进行了表征 ,并应用维氏硬度计对其进行硬度测试。通过AFM观察发现 ,人的牙釉质表面主要含有圆形结构 ;猪的牙釉质表面以片状结构为主 ;牛的牙釉质表面基本都是圆形结构。从三种牙釉质的SEM图中都观察到釉质晶体结构。硬度测试测得的人、猪、牛牙釉质的维氏硬度值分别为 370kg/mm2 、336kg/mm2 、2 82kg/mm2 。对照AFM、SEM和硬度测试结果 。AFM and SEM were used to study the microstructure of tooth enamel of three kinds of mammals, Vickers hardness(VH) tests were carried out as well. AFM images show that there are round structures on the surface of human tooth enamel, sheet structures on the surface of pig tooth enamel mainly, while the surface of bovine tooth enamel includes round structures only. Enamel crystals were observed in these three kinds of mammals through SEM. The VH of human, pig and bovine enamel is 370kg/mm2, 336kg/mm2 and 282kg/mm2 respectively. Based on the of AFM, SEM images and VH, it is suggested that there is certain correlation between the hardness and the microstructure of enamel crystal.

关 键 词：原子力显微镜 扫描电镜 超微结构 牙釉质晶体 硬度 

分 类 号：R318.08[医药卫生—生物医学工程]