Implant Inclination and Horizontal Misfit in Metallic Bar Framework of Overdentures: Analysis By 3D-FEA Method

Ricardo Armini Caldas; Carmem Silvia Costa Pfeifer; Ataís Bacchi; Mateus Bertolini Fernandes Dos Santos; Vagner Flávio Reginato; Rafael Leonardo Xediek Consani

doi:10.1590/0103-6440201801672

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Implant Inclination and Horizontal Misfit in Metallic Bar Framework of Overdentures: Analysis By 3D-FEA Method

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Implant Inclination and Horizontal Misfit in Metallic Bar Framework of Overdentures: Analysis By 3D-FEA Method

Ricardo Armini Caldas, Carmem Silvia Costa Pfeifer, Ataís Bacchi, Mateus Bertolini Fernandes Dos Santos, Vagner Flávio Reginato and Rafael Leonardo Xediek Consani

Brazilian dental journal, Vol.29(2), pp.166-172

03/2018

DOI: 10.1590/0103-6440201801672

PMID: 29898063

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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.

Finite Element Analysis

Biomechanical Phenomena

Dental Implants

Dental Stress Analysis - methods

Denture Retention

Denture, Overlay

Humans

Metals - chemistry

Details

Title: Subtitle: Implant Inclination and Horizontal Misfit in Metallic Bar Framework of Overdentures: Analysis By 3D-FEA Method
Creators: Ricardo Armini Caldas - Universidade Estadual de Campinas (UNICAMP)
Carmem Silvia Costa Pfeifer - Biomaterials and Biomechanics, OHSU, Portland, OR, USA
Ataís Bacchi - Atitus Educação
Mateus Bertolini Fernandes Dos Santos - Universidade Federal de Pelotas
Vagner Flávio Reginato - Universidade Estadual de Campinas (UNICAMP)
Rafael Leonardo Xediek Consani - Universidade Estadual de Campinas (UNICAMP)
Resource Type: Journal article
Publication Details: Brazilian dental journal, Vol.29(2), pp.166-172
DOI: 10.1590/0103-6440201801672
PMID: 29898063
NLM abbreviation: Braz Dent J
ISSN: 0103-6440
eISSN: 1806-4760
Language: English
Date published: 03/2018
Academic Unit: Prosthodontics
Record Identifier: 9984946627902771

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