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Proceedings Paper

Digital moiré interferometric analysis on the effect of nanoparticle conditioning on the mechanical deformation in dentin
Author(s): Fang Chi Li; Anil Kishen
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Paper Abstract

Dentin is a biological composite that forms the major bulk of tooth structure. Understanding the biomechanical response of dentin structure to forces is essential to restore the loss of mechanical integrity associated with dentin loss during disease or treatment procedures. Moiré interferometry is an optical interferometry based method, which allows wholefield, real-time analysis of dental structures with high-sensitivity. The aim of this study was to investigate the deformation gradients in dentin during function and subsequent to surface conditioning with bioactive biopolymeric nanoparticle. Slab shaped dentin specimens were prepared and a customized loading jig was used to compressively load the specimens from 10 N to 50 N. Specific regions of interest was chosen on the dentin specimens for strain analysis. The digital moiré interferometry experiments showed a distinct deformation pattern in dentin in the direction perpendicular to the dentinal tubules, which increased with increase in dentin loss. The dentin conditioned with nanoparticles did not display marked increase in strain gradients with loads. The current photomechanical experiment highlighted the impact of nanoparticle treatment to improve the mechanical integrity of dentin.

Paper Details

Date Published: 29 February 2016
PDF: 8 pages
Proc. SPIE 9692, Lasers in Dentistry XXII, 969203 (29 February 2016); doi: 10.1117/12.2211977
Show Author Affiliations
Fang Chi Li, Univ. of Toronto (Canada)
Anil Kishen, Univ. of Toronto (Canada)


Published in SPIE Proceedings Vol. 9692:
Lasers in Dentistry XXII
Peter Rechmann; Daniel Fried, Editor(s)

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