volume 2013 pages 1-6

Micro-Pop-In Issues in Nanoscale Contact Deformation Resistance of Tooth Enamel

Publication typeJournal Article
Publication date2013-11-27
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ISSN23144025
General Medicine
Abstract

Human tooth enamel is a natural nanocomposite with a hierarchical structural architecture that spans from macroscale to nanoscale. Thus it offers the unique opportunity to study the physics of deformation at the nanoscale in a controlled manner using the novel nanoindentation technique. In spite of the wealth of literature, however, the information about the effect of loading rate on the nanoindentation behavior of human tooth enamel is far from being significant. Therefore, the major objective of the present work was to study the loading rate effect on nanoindentation behavior of enamel with a view to improve our understanding that could be used for development of better bioinspired synthetic structures for functional as well as biomedical utilities. The nanoindentation experiments were conducted at loading rates in the range of 103 to ~0.3×106μN·s1 at peak load of 105μN at room temperature with a Berkovich tip on the longitudinal section from a freshly extracted premolar tooth enamel surface from a 65-year-old Indian male. To the best of our knowledge here we report for the first time the experimental observation of the increase in intrinsic resistance against contact-induced deformation at the nanoscale with the loading rate applied to the enamel surface. The results were explained by considering the microstructural details and the shear stress underneath the nanoindenter.

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Biswas N. et al. Micro-Pop-In Issues in Nanoscale Contact Deformation Resistance of Tooth Enamel // ISRN Biomaterials. 2013. Vol. 2013. pp. 1-6.
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Biswas N., Dey A., Mukhopadhyay A. K. Micro-Pop-In Issues in Nanoscale Contact Deformation Resistance of Tooth Enamel // ISRN Biomaterials. 2013. Vol. 2013. pp. 1-6.
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TY - JOUR
DO - 10.5402/2013/545791
UR - https://doi.org/10.5402/2013/545791
TI - Micro-Pop-In Issues in Nanoscale Contact Deformation Resistance of Tooth Enamel
T2 - ISRN Biomaterials
AU - Biswas, Nilormi
AU - Dey, Arjun
AU - Mukhopadhyay, Anoop Kumar
PY - 2013
DA - 2013/11/27
PB - Hindawi Limited
SP - 1-6
VL - 2013
SN - 2314-4025
ER -
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@article{2013_Biswas,
author = {Nilormi Biswas and Arjun Dey and Anoop Kumar Mukhopadhyay},
title = {Micro-Pop-In Issues in Nanoscale Contact Deformation Resistance of Tooth Enamel},
journal = {ISRN Biomaterials},
year = {2013},
volume = {2013},
publisher = {Hindawi Limited},
month = {nov},
url = {https://doi.org/10.5402/2013/545791},
pages = {1--6},
doi = {10.5402/2013/545791}
}