Quantitative analysis of lead in polysulfide-based impression material

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.

Bibliographic Details

Main Authors:	Braga,Aparecida Silva, Braga,Sebastião Roberto Silva, Catirse,Alma Blásida Concepción Elizaur Benitez, Vaz,Luis Geraldo, Mollo Junior,Francisco de Assis
Format:	Digital revista
Language:	English
Published:	ABM, ABC, ABPol 2007
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392007000200011
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