| Autor: |
Aparecida Silva Braga, Sebastião Roberto Silva Braga, Alma Blásida Concepción Elizaur Benitez Catirse, Luis Geraldo Vaz, Francisco de Assis Mollo Junior |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Materials Research, Vol 10, Iss 2, Pp 161-163 (2007) |
| Druh dokumentu: |
article |
| ISSN: |
1516-1439 |
| DOI: |
10.1590/S1516-14392007000200011 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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