Influence of Cross-Section Design and Vertical Misfit on Stress Distribution in Overdenture Retaining System: 3-Dimensional Finite Element Analysis

Moises C F Nogueira; Atais Bacchi; Marcelo F Mesquita; Mateus B F Santos; Rafael L X Consani

doi:10.1097/ID.0000000000000770

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Influence of Cross-Section Design and Vertical Misfit on Stress Distribution in Overdenture Retaining System: 3-Dimensional Finite Element Analysis

Journal article

Peer reviewed

Influence of Cross-Section Design and Vertical Misfit on Stress Distribution in Overdenture Retaining System: 3-Dimensional Finite Element Analysis

Moises C F Nogueira, Atais Bacchi, Marcelo F Mesquita, Mateus B F Santos and Rafael L X Consani

Implant dentistry, Vol.27(4), pp.445-451

08/01/2018

DOI: 10.1097/ID.0000000000000770

PMID: 29944484

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Abstract

To evaluate by 3-dimensional (3-D) finite element analysis the stress generated on overdenture-retaining bar system with different cross sections (round, ovoid, or Hader) and misfit levels (50, 100, and 200 μm) manufactured with different metallic alloys (Au type IV, Ag-Pd, Ti cp, and Co-Cr). Three-dimensional finite element models were modeled using specific 3-D software (SolidWorks) and imported into mechanical simulation software (ANSYS). A displacement simulating the settlement of the screw was performed until the infrastructure was settled properly on the prosthetic platform. Higher misfit levels caused higher stress on the overdenture-retaining bar system components, where (1) Hader bar presented the highest values (bar = 730.71; screw = 59.66, and periimplant bone tissue = 42.96, in megapascal) and (2) round bars made with type IV Au alloy presented lower stress values on the bar framework (193.99 MPa) and screw (10.27 MPa). Higher vertical misfit increased the stress values on the overdenture-retaining bar system; complex cross-sectional designs increased stress values on the bar framework, prosthetic screw, and periimplant bone tissue; stiffer alloys caused higher stress values on all the studied conditions.

Finite Element Analysis

Materials Testing

Software

Biomechanical Phenomena

Computer Simulation

Dental Alloys - chemistry

Dental Prosthesis, Implant-Supported

Dental Stress Analysis

Denture Design

Denture Retention - instrumentation

Denture, Overlay

Humans

Imaging, Three-Dimensional

In Vitro Techniques

Surface Properties

Details

Title: Subtitle: Influence of Cross-Section Design and Vertical Misfit on Stress Distribution in Overdenture Retaining System: 3-Dimensional Finite Element Analysis
Creators: Moises C F Nogueira - Universidade Estadual de Campinas (UNICAMP)
Atais Bacchi - Atitus Educação
Marcelo F Mesquita - Universidade Estadual de Campinas (UNICAMP)
Mateus B F Santos - University of Iowa, Prosthodontics
Rafael L X Consani - Universidade Estadual de Campinas (UNICAMP)
Resource Type: Journal article
Publication Details: Implant dentistry, Vol.27(4), pp.445-451
DOI: 10.1097/ID.0000000000000770
PMID: 29944484
NLM abbreviation: Implant Dent
ISSN: 1056-6163
eISSN: 1538-2982
Language: English
Date published: 08/01/2018
Academic Unit: Prosthodontics
Record Identifier: 9984946629802771

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