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Type: Artigo de periódico
Title: Photoelastic Analysis On Different Retention Methods Of Implant-supported Prosthesis
Author: Pimentel
Angelica Castro; Manzi
Marcello Roberto; Polo
Cristiane Ibanhes; Sendyk
Claudio Luiz; Naclerio-Homem
Maria da Graca; Sendyk
Wilson Roberto
Abstract: The aim of this study was to evaluate the stress distribution of different retention systems (screwed, cemented, and mixed) in 5-unit implant-supported fixed partial dentures through the photoelasticity method. Twenty standardized titanium suprastructures were manufactured, of which 5 were screw retained, 5 were cement retained, and 10 were mixed (with an alternating sequence of abutments), each supported by 5 external hexagon (4.0 mm x 11.5 mm) implants. A circular polariscope was used, and an axial compressive load of 100 N was applied on a universal testing machine. The results were photographed and qualitatively analyzed. We observed the formation of isochromatic fringes as a result of the stresses generated around the implant after installation of the different suprastructures and after the application of a compressive axial load of 100 N. We conclude that a lack of passive adaptation was observed in all suprastructures with the formation of low-magnitude stress in some implants. When cemented and mixed suprastructures were subjected to a compressive load, they displayed lower levels of stress distribution and lower intensity fringes compared to the screwed prosthesis.
Subject: Load-transfer Characteristics
Fixed Partial Dentures
Oral Rehabilitation
Occlusal Forces
Passive Fit
Citation: Photoelastic Analysis On Different Retention Methods Of Implant-supported Prosthesis. Allen Press Inc, v. 41, p. 258-263 JUN-2015.
Rights: fechado
Identifier DOI: 10.1563/AAID-JOI-D-12-00200
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

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