Journal Article10.1557/JMR.2006.0257
Nanoindentation: Application to dental hard tissue investigations
L. Angker,Michael V. Swain +1 more
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TL;DR: A review of relevant nanoindentation techniques and their applications to enamel, dentin, and cementum investigations can be found in this article, where the authors focus on the application of nanoindents to dental hard tissues.
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Abstract: In the last decade, most publications on the mechanical properties of dental calcified tissues were based on nanoindentation investigation. This technique has allowed a better understanding of the mechanical behavior of enamel, dentin, and cementum at a nanoscale. The indentations are normally carried out using pointed or spherical indenters. Hardness and elastic modulus are measured as a function of indenter penetration depth and from the elastic recovery upon unloading. The unique microstructure of each calcified tissue significantly contributes to the variations in the mechanical properties measured. As complex hydrated biological composites, the relative proportions of the composite components, namely, inorganic material (hydroxyapatite), organic material, and water, determines the mechanical properties of the dental hard tissues. Many pathological conditions affecting dental hard tissues cause changes in mineral levels, crystalline structures, and mechanical properties that may be probed by nanoindentation. This review focuses on relevant nanoindentation techniques and their applications to enamel, dentin, and cementum investigations.
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Citations
Spherical nanoindentation stress–strain curves
TL;DR: A review of the recent progress made in this respect in extracting meaningful indentation stress-strain curves from the raw datasets measured in instrumented spherical nanoindentation experiments can be found in this article.
Nanomechanical properties of dental resin-composites.
TL;DR: To determine by nanoindentation the hardness and elastic modulus of resin-composites, including a series with systematically varied filler loading, plus other representative materials that fall into the categories of flowable, bulk-fill and conventional nano-hybrid types, the group-average elastic moduli and nanohardnesses for bulk- Fill and flowable materials were lower than those for conventional nano
159
Hydroxyapatite Nanocrystals for Biomedical Applications
TL;DR: In this article, a biomolecule-assisted hydrothermal method was used to synthesize hydroxyapatite (HAP) nanocrystals, which can inhibit the proliferation of human HeLa cells in dose-and time-dependent manners.
127
Young's modulus of peritubular and intertubular human dentin by nano-indentation tests.
TL;DR: The local Young modulus of dry dentin viewed as a hierarchical composite was measured by nano-indentation using two types of experiments, both in a continuous stiffness measurement mode, and demonstrated that the intertubular dentin region may be considered to be quasi-isotropic, with a slightly higher modulus value when the indenting tip axis is parallel to the tubular direction.
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The distribution of carbonate in enamel and its correlation with structure and mechanical properties
TL;DR: Results suggest that enamel carbonate content and the associated change in the crystal structure of hydroxyapatite, i.e., degree of crystallinity, may have a direct effect on enamel mechanical properties.
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Sunita P. Ho,Harold E. Goodis,Mehdi Balooch,Nonomura G,Sally J. Marshall,Grayson W. Marshall +5 more
TL;DR: The results suggest ultrasectioned cementum was superior to polishing preparation technique since it allowed visualization of cementum structures similar to cryofractured specimens while providing a flat surface necessary for AFM-based nanoindentation techniques.
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Caries Rates for the Mesial Surface of the First Permanent Molar and the Distal Surface of the Second Primary Molar from 6 to 12 Years of Age in Sweden
I. Mejàre,H. Stenlund +1 more
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