Quantitative analysis of lead in polysulfide-based impression material
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Data
2007-06
Autores
Braga, Aparecida Silva
Braga, Sebastião Roberto Silva [UNESP]
Catirse, Alma Blásida Concepción Elizaur Benitez
Vaz, Luis Geraldo [UNESP]
Mollo Junior, Francisco De Assis [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
ABM, ABC, ABPol
Resumo
Permlastic® is a polysulfide-based impression material widely used by dentists in Brazil. It is composed of a base paste and a catalyzer containing lead dioxide. The high toxicity of lead to humans is ground for much concern, since it can attack various systems and organs. The present study involved a quantitative analysis of the concentration of lead in the material Permlastic®. The lead was determined by plasma-induced optical emission spectrometry (Varian model Vista). The percentages of lead found in the two analyzed lots were 38.1 and 40.8%. The lead concentrations in the material under study were high, but the product’s packaging contained no information about these concentrations.
Descrição
Palavras-chave
Permlastic®, impression materials, polysulfides, lead
Como citar
Materials Research. São Carlos, SP, Brazil: ABM, ABC, ABPol, v. 10, n. 2, p. 161-163, 2007.