Finite element analysis of the stresses around endosseous implants in various reconstructed mandibular models

Tomohisa Nagasao, M. Kobayashi, Y. Tsuchiya, T. Kaneko, T. Nakajima

研究成果: Article査読

61 被引用数 (Scopus)

抄録

Purpose: To calculate the location and intensity of the maximum stresses occurring around implants in the reconstructed mandible. Material and Methods: Human preserved mandibles and fibulae were used to design 3-D mandibular models on a Desktop Computer. Various 3-D simulation models representing mandibles were made. Implants (fixtures) and superstructures were then embedded in each model and occlusal pressure was applied to the cantilever portion of the superstructure. Von Mises stress, the maximum and minimum principal stress on each model were calculated using finite element structural analysis software. Finally, evaluation of the stresses around each fixture hole was performed. Results: It appeared that for each fixture hole, the direction and the magnitude of the stresses were influenced by complex factors such as the thickness of the cortical bone where the fixtures were embedded, the degree of vertical displacement under load, and the relationship between adjacent fixtures. Conclusion: Location and intensity of the stresses occurring around fixtures differs significantly between various types of mandibular reconstruction.

本文言語English
ページ(範囲)170-177
ページ数8
ジャーナルJournal of Cranio-Maxillofacial Surgery
30
3
DOI
出版ステータスPublished - 2002 6

ASJC Scopus subject areas

  • Surgery
  • Oral Surgery
  • Otorhinolaryngology

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