Finite element analysis of the mechanical behavior of a partially edentulous mandible as a function of cancellous bone density

Authors

  • André Ricardo Correia Faculdade de Medicina Dentária da Universidade do Porto
  • Paulo Piloto
  • José C. Reis Campos
  • Mário Vaz

Keywords:

Finite element analysis, mandible, stress analysis, mechanical behavior, bone density

Abstract

Purpose: To present a methodological procedure to obtain the geometric and discrete models of a human mandible for numerical simulation of the biomechanical behavior of a partially edentulous mandible as a function of cancellous bone density. Methods: A 3D finite element method was used to assess the model of a partially edentulous mandible, Kennedy Class I, with dental implants placed at the region of teeth 33 and 43. The geometric solid model was built from CT-scan images and prototyping. In the discrete model a parametric analysis was performed to analyze the influence of cancellous bone density (25 %, 50 %, 75 %) on the development of mandibular stress and strain during simulation of masticatory forces in the anterior region. Results: Maximum von Mises stress and equivalent strain values in cancellous bone were found close to the loading area (masticatory forces). The peak stress and strain values occurred in the mandibular anterior region, and for the same masticatory force the equivalent stresses increased with bone density. Conclusion: The results suggest that the stresses and strains developed in the mandibular model were affected by cancellous bone density during the simulation of masticatory activity. Key words: Finite element analysis; mandible; stress analysis; mechanical behavior; bone density.

Author Biography

André Ricardo Correia, Faculdade de Medicina Dentária da Universidade do Porto

Serviço de Anatomia Faculdade de Medicina Dentária da Universidade do Porto

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Published

2008-12-11

Issue

Vol. 24 No. 1 (2009)

Section

Original Article

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