Análise quantitativa do conteúdo de carga inorgânica das resinas compostas Quantitative analysis of the content of load inorganic of the composite resin
DOI:
https://doi.org/10.14295/bds.2002.v5i2.153Abstract
O propósito deste estudo foi avaliar o conteúdo de carga em massa e volume das resinas compostas. Cinco corpos-de-prova cilíndricos, com 5mm de diâmetro por 2mm de profundidade, foram confeccionados para cada resina composta. Os corpos- de-provas foram fotoativados por 40 segundos e pesados em balança analítica (Sartorius) à seco e imersos em água destilada. Após a eliminação da matriz orgânica realizada em forno elétrico a 700 ºC por 3 horas, os corpos-de-prova foram pesados à seco e armazenados em água destilada, por 7 dias para pesagem em imersão. O conteúdo por massa foi calculado com base nas massas seca do compósito e do resíduo inorgânico e o conteúdo em volume foi baseado na aplicação do Princípio de Arquimedes. Os resultados percentuais em massa e volume, respectivamente, foram: 1) compósitos diretos: Z-100 (81% e 73%); Z-250 (79% e 62%); TPH (74% e 65%); Degufill Mineral (75% e 64%); Tetric Ceram (74% e 57%); Durafill (54% e 43%); Heliofill (55% e 43%); Concept ( 75% e 67%); Wave (58% e 50%); FillMagic (76% e 68%) e Omegaflow ( 62% e 40%). Concluindo, todos os materiais estudados apresentaram composição quantitativa de carga em massa e volume de acordo com o demonstrado na literatura.
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