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Nanostructure-Nanomechanical Properties of Enamel Rods in Mouse Incisor

Published online by Cambridge University Press:  02 July 2020

Hanson Fong ,
Mehmet Sarikaya ,
Malcolm L. Snead  and
Shane N. White
Hanson Fong
Affiliation:
Materials Science & Engineering, University of Washington, Seattle, WA98195, USA
Mehmet Sarikaya
Affiliation:
Materials Science & Engineering, University of Washington, Seattle, WA98195, USA
Malcolm L. Snead
Affiliation:
Center for Craniofacial Molecular Biology, USC, Los Angeles, CA90033, USA
Shane N. White
Affiliation:
School of Dentistry, University of California, Los Angeles, CA90095, USA
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Extract

The understanding of detailed structures and properties of enamel is essentia for designing new implant materials that faithfully resemble enamel structure or to regenerate enamel through biomimetics using proteins as templates. As part of a greater effort in enamel biomimetics, this work focused on nanostructures and mechanical properties of individual enamel rods using the mause as a test animal.

A mature mouse incisor consists of two layers - dentin and enamel. In order to perform its normal masticatory function, the incisor must have sufficiently high flexural strength, toughness, and wear resistance. Enamel, which is highly mineralized (∼100%) with a knitted micro-architecture, satisfies the mechanical property requirements. It is known that elongated hydroxyapatite (HAP) crystals mineralize in bundles, i.e., enamel rods, and organize in a 3-D cross pattern. [1,2] However the organizations of HAP crystals within and between rods are not well understood.

Type
Ceramics & Minerals
Information
Microscopy and Microanalysis , Volume 6 , Issue S2: Proceedings: Microscopy & Microanalysis 2000, Microscopy Society of America 58th Annual Meeting, Microbeam Analysis Society 34th Annual Meeting, Microscopical Society of Canada/Societe de Microscopie de Canada 27th Annual Meeting, Philadelphia, Pennsylvania August 13-17, 2000 , August 2000 , pp. 382 - 383
Copyright
Copyright © Microscopy Society of America

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References

1. Fincham, A.G., Moradian-Oldak, J., and Simmer, J.P., J. Str. Biol, 126, 270 (1999).CrossRefGoogle Scholar

2. Fong, H. et al., to be published in Mater. Sci. & Eng - C (2000).Google Scholar

3. Supported by NIDCR grant #DE60390 through NIH.Google Scholar