Implant inclination and horizontal misfit in metallic bar framework of overdentures: Analysis by 3D-FEA method

Ricardo Armini Caldas, Carmem Pfeifer, Ataís Bacchi, Mateus Bertolini Fernandes dos Santos, Vagner Flávio Reginato, Rafael Leonardo Xediek Consani

Research output: Contribution to journalArticle

Abstract

The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. The studied factors were latero-lateral angulation in the right implant (-10,-5, 0, 5 and 10 degrees), and different bar cross-sections (circular, Hader and oval) presenting horizontal misfits (50 or 150 µm) on the opposite implant. Positive angulation (5 and 10 degrees) for implant inclination to mesial position, negative angulation (-5 and-10 degrees) for distal position, and zero degree for parallel implants. The von Mises stresses evaluated the bar, screw and the implant; maximum principal, minimum principal and shear stress analyses evaluated the peri-implant bone tissue. Parallel implants provide lower stress in alveolar bone tissue; mesial inclined bars showed the most negative effect on prosthetic structures and implants. In conclusion, bar cross-section showed no influence on stress distribution for peri-implant bone tissue, and circular bar provided better behavior to the prosthetic system. Higher stress concentration is provided to all system as the misfit increases.

Original languageEnglish (US)
Pages (from-to)166-172
Number of pages7
JournalBrazilian Dental Journal
Volume29
Issue number2
DOIs
StatePublished - Mar 1 2018

Fingerprint

Overlay Denture
Bone and Bones
Finite Element Analysis
Biomechanical Phenomena

Keywords

  • Dental implants
  • Finite element analysis
  • Misfit
  • Overdentures

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Implant inclination and horizontal misfit in metallic bar framework of overdentures : Analysis by 3D-FEA method. / Caldas, Ricardo Armini; Pfeifer, Carmem; Bacchi, Ataís; dos Santos, Mateus Bertolini Fernandes; Reginato, Vagner Flávio; Consani, Rafael Leonardo Xediek.

In: Brazilian Dental Journal, Vol. 29, No. 2, 01.03.2018, p. 166-172.

Research output: Contribution to journalArticle

Caldas, Ricardo Armini ; Pfeifer, Carmem ; Bacchi, Ataís ; dos Santos, Mateus Bertolini Fernandes ; Reginato, Vagner Flávio ; Consani, Rafael Leonardo Xediek. / Implant inclination and horizontal misfit in metallic bar framework of overdentures : Analysis by 3D-FEA method. In: Brazilian Dental Journal. 2018 ; Vol. 29, No. 2. pp. 166-172.
@article{aadfc599b41d4f0982338e2a3863b785,
title = "Implant inclination and horizontal misfit in metallic bar framework of overdentures: Analysis by 3D-FEA method",
abstract = "The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. The studied factors were latero-lateral angulation in the right implant (-10,-5, 0, 5 and 10 degrees), and different bar cross-sections (circular, Hader and oval) presenting horizontal misfits (50 or 150 µm) on the opposite implant. Positive angulation (5 and 10 degrees) for implant inclination to mesial position, negative angulation (-5 and-10 degrees) for distal position, and zero degree for parallel implants. The von Mises stresses evaluated the bar, screw and the implant; maximum principal, minimum principal and shear stress analyses evaluated the peri-implant bone tissue. Parallel implants provide lower stress in alveolar bone tissue; mesial inclined bars showed the most negative effect on prosthetic structures and implants. In conclusion, bar cross-section showed no influence on stress distribution for peri-implant bone tissue, and circular bar provided better behavior to the prosthetic system. Higher stress concentration is provided to all system as the misfit increases.",
keywords = "Dental implants, Finite element analysis, Misfit, Overdentures",
author = "Caldas, {Ricardo Armini} and Carmem Pfeifer and Ata{\'i}s Bacchi and {dos Santos}, {Mateus Bertolini Fernandes} and Reginato, {Vagner Fl{\'a}vio} and Consani, {Rafael Leonardo Xediek}",
year = "2018",
month = "3",
day = "1",
doi = "10.1590/0103-6440201801672",
language = "English (US)",
volume = "29",
pages = "166--172",
journal = "Brazilian Dental Journal",
issn = "0103-6440",
publisher = "Associacao Brasileira de Divulgacao Cientifica",
number = "2",

}

TY - JOUR

T1 - Implant inclination and horizontal misfit in metallic bar framework of overdentures

T2 - Analysis by 3D-FEA method

AU - Caldas, Ricardo Armini

AU - Pfeifer, Carmem

AU - Bacchi, Ataís

AU - dos Santos, Mateus Bertolini Fernandes

AU - Reginato, Vagner Flávio

AU - Consani, Rafael Leonardo Xediek

PY - 2018/3/1

Y1 - 2018/3/1

N2 - The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. The studied factors were latero-lateral angulation in the right implant (-10,-5, 0, 5 and 10 degrees), and different bar cross-sections (circular, Hader and oval) presenting horizontal misfits (50 or 150 µm) on the opposite implant. Positive angulation (5 and 10 degrees) for implant inclination to mesial position, negative angulation (-5 and-10 degrees) for distal position, and zero degree for parallel implants. The von Mises stresses evaluated the bar, screw and the implant; maximum principal, minimum principal and shear stress analyses evaluated the peri-implant bone tissue. Parallel implants provide lower stress in alveolar bone tissue; mesial inclined bars showed the most negative effect on prosthetic structures and implants. In conclusion, bar cross-section showed no influence on stress distribution for peri-implant bone tissue, and circular bar provided better behavior to the prosthetic system. Higher stress concentration is provided to all system as the misfit increases.

AB - The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. The studied factors were latero-lateral angulation in the right implant (-10,-5, 0, 5 and 10 degrees), and different bar cross-sections (circular, Hader and oval) presenting horizontal misfits (50 or 150 µm) on the opposite implant. Positive angulation (5 and 10 degrees) for implant inclination to mesial position, negative angulation (-5 and-10 degrees) for distal position, and zero degree for parallel implants. The von Mises stresses evaluated the bar, screw and the implant; maximum principal, minimum principal and shear stress analyses evaluated the peri-implant bone tissue. Parallel implants provide lower stress in alveolar bone tissue; mesial inclined bars showed the most negative effect on prosthetic structures and implants. In conclusion, bar cross-section showed no influence on stress distribution for peri-implant bone tissue, and circular bar provided better behavior to the prosthetic system. Higher stress concentration is provided to all system as the misfit increases.

KW - Dental implants

KW - Finite element analysis

KW - Misfit

KW - Overdentures

UR - http://www.scopus.com/inward/record.url?scp=85048559115&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048559115&partnerID=8YFLogxK

U2 - 10.1590/0103-6440201801672

DO - 10.1590/0103-6440201801672

M3 - Article

C2 - 29898063

AN - SCOPUS:85048559115

VL - 29

SP - 166

EP - 172

JO - Brazilian Dental Journal

JF - Brazilian Dental Journal

SN - 0103-6440

IS - 2

ER -