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

doi:10.1016/j.compbiomed.2014.10.005

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

Comput Biol Med. 2014 Dec:55:53-60. doi: 10.1016/j.compbiomed.2014.10.005. Epub 2014 Oct 19.

Authors

Satoshi Yamaguchi¹, Paulo G Coelho², Van P Thompson³, Nick Tovar², Junpei Yamauchi⁴, Satoshi Imazato⁴

Affiliations

¹ Department of Biomaterials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan. Electronic address: yamagu@dent.osaka-u.ac.jp.
² Department of Biomaterials and Biomimetics, New York University College of Dentistry, 345 E 24th Street, New York, NY 10010, USA.
³ Department of Biomaterials, Biomimetics and Biophotonics, King׳s College London, Dental Institute, Guy׳s Hospital, London SE1 9RT, UK.
⁴ Department of Biomaterials Science, Osaka University Graduate School of Dentistry, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan.

PMID: 25450219
DOI: 10.1016/j.compbiomed.2014.10.005

Abstract

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׳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.

Keywords: Computer simulation; Dental enamel; Finite element analysis; In silico; Moving particle simulation.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Biomechanical Phenomena
Computer Simulation
Dental Enamel / physiology*
Finite Element Analysis
Humans
Models, Biological*
Pressure