Biomechanical evaluation of hindraft implant anglulation in total implant-supported mandible rehabilitations through finite element method

Authors

  • Bruno Salles Sotto-Maior Departamento de Odontologia Restauradora, Faculdade de Odontologia, Universidade Federal de Juiz de Fora
  • Breno Nogueira Silva Departamento de Cirurgia Oral e Maxilofacial , Faculdade de Odontologia, Universidade Federal de Juiz de Fora
  • Patrícia Zagoto Figueredo Instituto de Pesquisas São Leopoldo Mandic, Faculdade São Leopoldo Mandic, Área de Implantodontia, Campinas
  • Lucas Henriques Rosa Departamento de Pós-graduação, Faculdade de Odontologia, Universidade Federal de Juiz de Fora
  • Mateus Antunes Ribeiro Departamento de Pós-graduação, Faculdade de Odontologia, Universidade Federal de Juiz de Fora
  • Lucas Lactim Ferrarez Departamento de Pós-graduação, Faculdade de Odontologia, Universidade Federal de Juiz de Fora
  • Neuza Maria Souza Picorelli Assis Departamento de Cirurgia Oral e Maxilofacial , Faculdade de Odontologia, Universidade Federal de Juiz de Fora

DOI:

https://doi.org/10.34019/1982-8047.2019.v45.28675

Keywords:

Dental Implantation, Mandible, Mouth Rehabilitation

Abstract

Introduction: As a treatment option for mandibular edentulism, the All-on-4® concept was developed, an anchoring technique with the installation of four implants distributed in the anterior region of the edentulous mandible for total implant-supported rehabilitation. Objective: In this study, we analyzed by the finite element method the biomechanical behavior of implants and bone tissues. Material and methods: Three computerized three-dimensional models were used, each with 4 external hexagon 3.75x13mm implants in the mental interforam region, the anterior implants kept in the axial position and the variation occurred in the posterior implants: group 1, straight posterior implants; group 2, posterior implants inclined at 17° and group 3, posterior implants inclined at 30°. An axial load of 150 N was applied to the molars and 100 N to the premolars bilaterally. Results: After analysis, it was found that in the 17° (13.68Mpa, 34.76Mpa and 14.36Mpa groups for tensile, compressive and shear stresses respectively) and 30 ° (14.26Mpa, 23.14Mpa and 10.31Mpa for tensile, compressive and shear stresses respectively) presented lower stress peaks in the bone. The same pattern of stress distribution was observed for the implants, with reduction when the distal implants were tilted. Conclusion: The results showed that the angulation of the implants favored the distribution of stresses in the bone and implants, positively interfering in the biomechanical performance of the total implant-supported rehabilitations in edentulous jaws, considering that in the group of straight implants the stress values ​​were higher.

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Published

2019-11-28

How to Cite

1.
Sotto-Maior BS, Nogueira Silva B, Zagoto Figueredo P, Henriques Rosa L, Antunes Ribeiro M, Lactim Ferrarez L, Souza Picorelli Assis NM. Biomechanical evaluation of hindraft implant anglulation in total implant-supported mandible rehabilitations through finite element method. HU Rev [Internet]. 2019Nov.28 [cited 2024Nov.24];45(3):244-53. Available from: https://periodicos.ufjf.br/index.php/hurevista/article/view/28675

Issue

Vol. 45 No. 3 (2019): HU Revista 45 anos - Edição Comemorativa

Section

Artigos Originais

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