Mechanical behavior of implant-supported full-arch prostheses in different locations in the maxilla: 3D-FEA and strain gauge analysis

Authors

  • Mateus Favero Barra Grande São Paulo State University, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos, SP, Brasil. https://orcid.org/0000-0002-0996-0847
  • Guilherme da Rocha Scalzer Lopes São Paulo State University, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos, SP, Brasil. https://orcid.org/0000-0002-4310-0082
  • Marcelo Lucchesi Teixeira São Leopoldo Mandic University, Department of Dental Prosthodontics, Campinas, SP, Brasil. https://orcid.org/0000-0001-9916-5777
  • André Antônio Pelegrine São Paulo State University, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos, SP, Brasil. https://orcid.org/0000-0001-7935-1062
  • Jefferson David Melo de Matos São Paulo State University, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos, SP, Brasil. https://orcid.org/0000-0003-4507-0785
  • Renato Sussumo Nishioka São Paulo State University, Department of Dental Materials and Prosthodontics, Institute of Science and Technology, São José dos Campos, SP, Brasil. https://orcid.org/0000-0002-1458-601X

DOI:

https://doi.org/10.4322/bds.2023.e3771

Abstract

The maxillary bone restriction can limit the implants position to support a full-arch prosthesis. Objective: Therefore, this study evaluated the biomechanical behavior of a full-arch prosthesis supported by six implants in different configurations: group A (implants inserted in the region of canines, first premolars and second molars), group B (implants inserted in the region of first premolar, first molar and second molar) and group C (implants in second premolar, first premolar and second molar). Material and Methods: The models were analyzed by the finite element method validated by strain gauge. Three types of loads were applied: in the central incisors, first premolars and second molars, obtaining results of von-Mises stress peaks and microstrain. All registered results reported higher stress concentration in the prosthesis of all groups, with group C presenting higher values in all structures when compared to A and B groups. The highest mean microstrain was also observed in group C (288.8 ± 225.2 microstrain), however, there was no statistically significant difference between the evaluated groups. In both groups, regardless of the magnitude and direction of the load, the maximum von-Mises stresses recorded for implants and prosthesis displacements were lower in group A. Conclusion: It was concluded that an equidistant distribution of implants favors biomechanical behavior of full-arch prostheses supported by implants; and the placement of posterior implants seems to be a viable alternative to rehabilitate totally edentulous individuals.

KEYWORDS

Dental implants; Biomechanical phenomena; Dental prosthesis; Finite element analysis; Maxilla.

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Published

2023-06-15

Issue

Vol. 26 No. 2 (2023): Apr - Jun / 2023 - Published Mar 2023

Section

Clinical or Laboratorial Research

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All manuscript's copyright ownership of the article "____________________________________________________________________" is transferred from the author(s) to the BRAZILIAN DENTAL SCIENCE, in the event the work is published. The manuscript has not been published elsewhere and that it has not been submitted simultaneously for publication elsewhere.

We hereby attest the study is original and does not present manipulated data, fraud or plagiarism. We made significant scientific contribution to the study and we are aware of the presented data and in agreement with the final version of the manuscript. We assume complete responsibility for the ethical aspects of the study.

 

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