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Type: Artigo
Title: Evaluation Of Cyclic And Linear Mechanical Resistance Of Prebent And Manually-bent Plates Used For Maxillary Advancement In Orthognathic Surgery
Author: Lauria
Andrezza; de Medeiros
Raquel Correia; Rodrigues
Danillo Costa; Loureiro Sato
Fabio Ricardo; Fernandes Moreira
Roger William
Abstract: The aim of the present study was to compare prebent and manually-bent plates used in maxillary advancement. The prebent plates were fixed in polyurethane blocks for the linear test and aluminium blocks for the cyclic test, and the manually-bent plates were fixed in polyurethane and aluminium blocks. The linear load tests were done using an Instron (R) 4411 mechanical testing machine and the cyclic test with an Instron (R) E3000 testing machine. The linear mechanical test showed that there was no significant difference between the plates. In the cyclic test the prebent plates reached the limit of 500000 cycles without fracturing whereas the manually-bent plate group fractured before reaching the limit of cycles (p = 0.008). The decision to use prebent or manually-bent plates during operations should be influenced by the production of the bends and their consequent brittleness. (C) 2016 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
Subject: Bone Plates
Mechanical Stress
Maxillary Osteotomy
Editor: Churchill Livingstone
Rights: fechado
Identifier DOI: 10.1016/j.bjoms.2016.07.030
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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