Dynamic finite element analysis and moving particle simulation of human enamel on a microscale

Satoshi Yamaguchi, Paulo G. Coelho, Van P. Thompson, Nick Tovar, Junpei Yamauchi, Satoshi Imazato

Research output: Contribution to journalArticlepeer-review


Background: The study of biomechanics of deformation and fracture of hard biological tissues involving organic matrix remains a challenge as variations in mechanical properties and fracture mode may have time-dependency. Finite element analysis (FEA) has been widely used but the shortcomings of FEA such as the long computation time owing to re-meshing in simulating fracture mechanics have warranted the development of alternative computational methods with higher throughput. The aim of this study was to compare dynamic two-dimensional FEA and moving particle simulation (MPS) when assuming a plane strain condition in the modeling of human enamel on a reduced scale. Methods: Two-dimensional models with the same geometry were developed for MPS and FEA and tested in tension generated with a single step of displacement. The displacement, velocity, pressure, and stress levels were compared and Spearman[U+05F3]s rank-correlation coefficients R were calculated (p<0.001). Results: The MPS and FEA were significantly correlated for displacement, velocity, pressure, and Y-stress. Conclusions: The MPS may be further developed as an alternative approach without mesh generation to simulate deformation and fracture phenomena of dental and potentially other hard tissues with complex microstructure.

Original languageEnglish (US)
Pages (from-to)53-60
Number of pages8
JournalComputers in Biology and Medicine
StatePublished - Dec 1 2014


  • Computer simulation
  • Dental enamel
  • Finite element analysis
  • In silico
  • Moving particle simulation

ASJC Scopus subject areas

  • Computer Science Applications
  • Health Informatics


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