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[Fatigue of retentive clasps of removable partial dentures. Effect of alloys, thickness and casting techniques. 2]. / Fadiga de grampos de retenção em prótese parcial removível. Efeito de ligas, espessuras e técnicas de fusão. Parte II.
Machado Cucci, A L; Fuller, J B; Giampaolo, E T; Leonardi, P.
Afiliação
  • Machado Cucci AL; Faculdade de Odontologia-UNESP.
Rev Odontol UNESP ; 19(1): 251-8, 1990.
Article em Pt | MEDLINE | ID: mdl-2099555
The authors tested the T clasp of Roach in three differents proportions among width and thickness: E1-1.7; E2-2.0 and E3-2.3, with a constant length of 15 mm. These clasps were casted with three cobalt-chromium alloys (L1-Biosil; L2-Steldent and L3-Duracrom), through two casting techniques (F1-oxygen-gas and F2-oxygen-acetylene). The fatigue of the clasps were verified by using and assay machine, that through movements, simulate the insertion and removal of the clasps for a pattern which were obtained from a premolar, prepared in a surveyor. This machine detect the fatigue of the clasps and count the number of cycles of insertion and removal realized. The obtained results of the interaction between the analysed factors, were submitted to the statistic analysis and the authors concluded that: a) the interaction of factors, Alloy x Thickness, Alloy x Casting Technique and Thickness x Casting Technique did not change the order of effects that the factors showed separately but gave rise to effects of different magnitude for any observed sense; b) the simultaneous interaction of the factors Alloy x Thickness x Casting Technique confirmed the superiority of the L3 alloy, the thickness E3 and the F2 casting technique.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ligas de Cromo / Técnica de Fundição Odontológica / Retenção de Dentadura Limite: Humans Idioma: Pt Revista: Rev Odontol UNESP Ano de publicação: 1990 Tipo de documento: Article País de publicação: Brasil
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Ligas de Cromo / Técnica de Fundição Odontológica / Retenção de Dentadura Limite: Humans Idioma: Pt Revista: Rev Odontol UNESP Ano de publicação: 1990 Tipo de documento: Article País de publicação: Brasil