Nano-structure and nano-mechanical properties of human teeth

Chung Jen Chung, Bo Hsiung Wu, Jen Fin Lin, Chang Fu Han, Shu Fen Chuang, Wang Long Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we investigate the nanostructure and nano-mechanical properties of human teeth. A nano-indenter is adopted to acquire the nano-mechanical properties of teeth, while a focused ion beam system (FIB) is used to prepare high quality transmission electron microscopy specimen. For nanomechanical properties, the tooth specimens are cut into horizontal and vertical sections separately within 1mm thick. All the sections contain dentin, dentinenamel junction (DEJ) and enamel. The hardness and Young's modulus of each compartment are systematically measured, both showing an increasing trend from the dentin to the enamel. As to the preparation for transmission electronic microscope (TEM) specimen, the teeth are cut into 50 nm thickness. High resolution images and diffraction patterns reveal that dentin is poly-crystallized and present anisotropic properties.

Original languageEnglish
Title of host publicationNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems
Pages593-596
Number of pages4
DOIs
Publication statusPublished - 2011 Oct 4
Event6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011 - Kaohsiung, Taiwan
Duration: 2011 Feb 202011 Feb 23

Publication series

NameNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems

Other

Other6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011
CountryTaiwan
CityKaohsiung
Period11-02-2011-02-23

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Chung, C. J., Wu, B. H., Lin, J. F., Han, C. F., Chuang, S. F., & Li, W. L. (2011). Nano-structure and nano-mechanical properties of human teeth. In NEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems (pp. 593-596). [6017425] (NEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems). https://doi.org/10.1109/NEMS.2011.6017425