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Diametral tensile strength of two brazilian resin-modified glass ionomers cements: influence of the powder/liquid ratio
Lund, Rafael Guerra; Ogliari, Fabrício; Lima, Giana Silveira; Del-Pino, Francisco Augusto Burkert; Petzhold, César Liberato; Piva, Evandro.
Afiliação
  • Lund, Rafael Guerra; Federal University of Pelotas. Pelotas. BR
  • Ogliari, Fabrício; Federal University of Pelotas. Pelotas. BR
  • Lima, Giana Silveira; Federal University of Pelotas. Pelotas. BR
  • Del-Pino, Francisco Augusto Burkert; Federal University of Pelotas. Geoscience and Chemistry Institute. Department of Biochemistry. Pelotas. BR
  • Petzhold, César Liberato; Federal University of Pelotas. Geoscience and Chemistry Institute. Laboratory of Polymer Synthesis. Pelotas. BR
  • Piva, Evandro; Federal University of Pelotas. School of Dentistry. Department of Semiology. Pelotas. BR
Braz. j. oral sci ; 6(21): 1353-1356, Apr.-June 2007. tab, graf
Article em En | LILACS, BBO | ID: biblio-850539
Biblioteca responsável: BR28.1
Localização: BR28.1; BR97.1
ABSTRACT
The aim of this study was to evaluate the influence of powder/liquid ratio in the diametral tensile strength of two resin-modified glass ionomers cements (RMGIC). Two Brazilian brands of RMGIC Resiglass R (RG Biodinâmica) and Vitro Fil LC (VF DFL) were used. Each product was mixed in two different powder/liquid ratios, (11) 1 scoop of powder to one drop of liquid or (12) 1 scoop of powder to 2 drops of liquid. The control was considered the powder/liquid ratio recommended by each manufacturer (RG 11 and VF 12 P/L). Four groups (n=5) with sample dimensions of 2.5 and 5.0 mm (thickness and diameter respectively) were tested. Diametral Tensile Test was performed in a mechanical testing machine (EMIC DL 500). Data obtained were submitted to One-way ANOVA and Tukey's multiple comparisons test (α=5%). For both national RMGICs, the experimental variations in the powder/liquid ratio led to an increase in diametral tensile strength when compared to the ratios advocated by the manufacturers. Group VL manipulated with experimental ratio11 showed statistically the highest (25.54±2.38 MPa) DTS mean among the tested groups whereas Resinglass R manipulated with 11 ratio, as advocated by manufacturer, showed statistically the lowest DTS mean (9.27±1.37 MPa). A review and further adjustments in the ratios recommended by the manufacturers of both resin-modified glass ionomers cements investigated is necessary.
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Texto completo: 1 Coleções: 01-internacional Base de dados: BBO / LILACS Assunto principal: Resistência à Tração / Cimentos Dentários / Cimentos de Ionômeros de Vidro País/Região como assunto: America do sul / Brasil Idioma: En Revista: Braz. j. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2007 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: BBO / LILACS Assunto principal: Resistência à Tração / Cimentos Dentários / Cimentos de Ionômeros de Vidro País/Região como assunto: America do sul / Brasil Idioma: En Revista: Braz. j. oral sci Assunto da revista: ODONTOLOGIA Ano de publicação: 2007 Tipo de documento: Article País de afiliação: Brasil País de publicação: Brasil