18. A Comparative Study of the Microstructure -Property Relationship in Human Adult and Baby Teeth

  1. Mineo Mizuno
  1. I. M. Low1,
  2. N. Duraman1,
  3. J. Fulton1,
  4. N. Tezuka1 and
  5. I. J. Davies2

Published Online: 27 MAR 2008

DOI: 10.1002/9780470291269.ch18

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6

How to Cite

Low, I. M., Duraman, N., Fulton, J., Tezuka, N. and Davies, I. J. (2005) A Comparative Study of the Microstructure -Property Relationship in Human Adult and Baby Teeth, in Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6 (ed M. Mizuno), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291269.ch18

Author Information

  1. 1

    Materials Research Group, Dept of Applied Physics, Curtin University of Technology, Perth, WA 6845, Australia

  2. 2

    Materials Research Group, Dept of Mechanical Engineering, Curtin University of Technology, Perth, WA 6845, Australia

Publication History

  1. Published Online: 27 MAR 2008
  2. Published Print: 1 JAN 2005

ISBN Information

Print ISBN: 9781574982367

Online ISBN: 9780470291269

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Keywords:

  • microhardness;
  • catastrophic;
  • microscope;
  • crystallographic;
  • viscoclastic

Summary

The structure-property relationship in human adult and baby teeth was characterised by grazing-incidence synchrotron radiation diffraction, optical and atomic-force microscopy, in addition to Vickers indentation. Similarities and differences between both types of teeth have been highlighted and discussed. The depth profiling of hardness indicated a gradual change in microhardness from the enamel to dentine, thus confirming the graded nature of human teeth. Vickers hardness of the enamel was load-dependent but load-independent in the dentine. The use of a “bonded-interface” technique revealed the nature and evolution of deformation-microfracture damage around and beneath Vickers contacts.