University of Adelaide Library

Adelaide Research and Scholarship : Schools and Disciplines : School of Mechanical Engineering : Mechanical Engineering publications

Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/74597

Type: Journal article
Title: Structural integrity of enamel: experimental and modeling
Author: Xie, Zonghan
Swain, Michael V.
Hoffman, Mark J.
Citation: Journal of Dental Research, 2009; 88(6):529-533
Publisher: International and American Associations for Dental Research
Issue Date: 2009
ISSN: 0022-0345
School/Discipline: School of Mechanical Engineering
Statement of
Responsibility: 
Z. Xie, M.V. Swain and M.J. Hoffman
Abstract: Tooth enamel is the hardest tissue in the human body and is directly responsible for dental function. Due to its non-regenerative nature, enamel is unable to heal and repair itself biologically after damage. We hypothesized that with its unique microstructure, enamel possesses excellent resistance to contact-induced damage, regardless of loading direction. By combining instrumented indentation tests with microstructural analysis, we report that enamel can absorb indentation energy through shear deformation within its protein layers between apatite crystallites. Moreover, a near-isotropic inelastic response was observed when we analyzed indentation data in directions either perpendicular or parallel to the path of enamel prisms. An "effective" crystal orientation angle, 33 degrees -34 degrees, was derived for enamel microstructure, independent of the loading direction. These findings will help guide the design of the nanostructural architecture of dental restorative materials.
Keywords: Tooth enamel; contact damage resistance; stress-strain behaviour; crystal orientation angle; structural integrity
Rights: Copyright © 2012 by International & American Associations for Dental Research
RMID: 0020122911
DOI: 10.1177/0022034509337130
Appears in Collections:Materials Research Group Publications
Mechanical Engineering publications
View citing articles in: Google Scholar
Scopus

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

© 2008 The University of Adelaide
library@adelaide.edu.au
CRICOS Provider Number 00123M
Service Charter | Copyright | Privacy | Disclaimer