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Multiscale analysis of stress distribution in teeth under applied forces

Objectives The present study aimed to clarify stress distribution in teeth under an external applied load using microindentation and multiscale simulation. Methods Anisotropic material properties of enamel and dentin were measured using a microindentation method with a dynamic ultra microhardness te... Full description

Journal Title: Dental Materials 2009, Vol.25(1), pp.67-73
Main Author: Miura, Jiro
Other Authors: Maeda, Yoshinobu , Nakai, Hiroaki , Zako, Masaru
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0109-5641 ; E-ISSN: 1879-0097 ; DOI: 10.1016/j.dental.2008.04.015
Link: https://www.sciencedirect.com/science/article/pii/S0109564108001413
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recordid: elsevier_sdoi_10_1016_j_dental_2008_04_015
title: Multiscale analysis of stress distribution in teeth under applied forces
format: Article
creator:
  • Miura, Jiro
  • Maeda, Yoshinobu
  • Nakai, Hiroaki
  • Zako, Masaru
subjects:
  • Finite Element Analysis
  • Multiscale Simulation
  • Enamel Microstructure
  • Microindentation
  • Dentistry
ispartof: Dental Materials, 2009, Vol.25(1), pp.67-73
description: Objectives The present study aimed to clarify stress distribution in teeth under an external applied load using microindentation and multiscale simulation. Methods Anisotropic material properties of enamel and dentin were measured using a microindentation method with a dynamic ultra microhardness tester. The numerical model was constructed using the finite element mesh superposition method with a microscale (enamel rods), mesoscale (teeth), and macroscale (bone). Multiscale simulation was used to analyze different scale structures. A concentrated load (10 N) was applied to the labial surface of the central incisor. Results The results revealed stresses of 5 MPa (normal stress) and 6.5 MPa (shear stress) in the enamel sheath at the center of the labial region compared to 1.4 MPa (normal stress) and 21.4 MPa (shear stress) in the cervical region. Significance These results suggest that shear stresses in the enamel sheath may play significant roles in stress transmission....
language: eng
source:
identifier: ISSN: 0109-5641 ; E-ISSN: 1879-0097 ; DOI: 10.1016/j.dental.2008.04.015
fulltext: fulltext
issn:
  • 0109-5641
  • 01095641
  • 1879-0097
  • 18790097
url: Link


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descriptionObjectives The present study aimed to clarify stress distribution in teeth under an external applied load using microindentation and multiscale simulation. Methods Anisotropic material properties of enamel and dentin were measured using a microindentation method with a dynamic ultra microhardness tester. The numerical model was constructed using the finite element mesh superposition method with a microscale (enamel rods), mesoscale (teeth), and macroscale (bone). Multiscale simulation was used to analyze different scale structures. A concentrated load (10 N) was applied to the labial surface of the central incisor. Results The results revealed stresses of 5 MPa (normal stress) and 6.5 MPa (shear stress) in the enamel sheath at the center of the labial region compared to 1.4 MPa (normal stress) and 21.4 MPa (shear stress) in the cervical region. Significance These results suggest that shear stresses in the enamel sheath may play significant roles in stress transmission....
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