avaliação comparativa da perda de retenção de quatro sistemas de encaixes do tipo era e o-ring empregados sob overdentures em função do tempo de uso comparative evaluation of retention loss in four types of attachments used on overdentures in function of time of use

Clicks: 171
ID: 177652
2003
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Abstract
O objetivo deste trabalho foi avaliar e comparar a capacidade retentiva entre dois sistemas O-ring e O-SO (Grupo I) e dois sistemas ERA - cápsulas de retenção cinza e brancas - (Grupo II), em função simulada, com ciclos de inserção e remoção, do início, 6 meses, 1, 2, 3, 4 e 5 anos depois. Dois implantes do tipo Brånemark foram fixados em duas bases metálicas trapezoidais, sendo os testes de inserção e remoção feitos numa máquina de costura ajustada para este propósito, usando um sistema de correias e polias, movendo um virabrequim. Uma platina de delineador foi usada para fixação dos corpos de prova às bases metálicas na máquina de costura. Os testes de resistência ao movimento axial das cápsulas por tensão foram feitos numa máquina de ensaios universal em períodos de tempo pré-estabelecidos, antes e após o término do ciclo na máquina de costura. Baseado nos resultados, esse estudo pôde concluir que houve perda de retenção de todos os sistemas testados, porém o sistema ERA apresentou, desde o início, maior retenção quando comparado aos outros sistemas e a cápsula cinza mostrou o melhor resultado no final da simulação.
The aim of this study was to evaluate and compare the retentive capacity between two O-ring and O-SO system (Group I), and two ERA system types - white and gray retention caps - (Group II), respectively, in simulated function in database, 6 months, 1, 2, 3, 4, and 5 years later, with insertion and removal cycles. Two Brånemark implants were fixed in two trapezoidal metallic bases for the tests. Removal and insertion tests were done in a sewing machine, adjusted for this purpose using a belt and a pulley system, moving a steel crankshaft. A delineator platinum hold was used for body trial fixation to the metallic base of the sewing machine. Resistance test to axial movement of the caps by tension was done in a Universal test machine in an established period of time, before and after the cycle accomplishments in the adapted sewing machine. Based on the results, this study concludes that all the attachment systems tested showed retention loss during the experiment; the ERA system showed, since the beginning, higher retention compared to the other systems and the gray colored attachment showed the best result in the end of the simulated use test.
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bonachela2003journalavaliao Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Wellington Cardoso Bonachela, Ana Paula Ribeiro do Vale Pedreira, Luciana Marins, Tatiana Pereira
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Journal journal of animal and plant sciences
Year 2003
DOI
10.1590/S1678-77572003000100009
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572003000100009
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