Quantitative analysis of lead in polysulfide-based impression material
| Autor: | Alma Blasida Concepcion Elizaur B. Catirse, Francisco de Assis Mollo Junior, Luis Geraldo Vaz, S. R S Braga, A. S. Braga |
|---|---|
| Přispěvatelé: | Universidade de São Paulo (USP), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2007 |
| Předmět: |
lead
Materials science Mechanical Engineering Metallurgy Mineralogy Lead dioxide Condensed Matter Physics Impression impression materials chemistry.chemical_compound Lead (geology) chemistry Mechanics of Materials Permlastic® lcsh:TA401-492 polysulfides lcsh:Materials of engineering and construction. Mechanics of materials General Materials Science Permlastic Optical emission spectrometry Quantitative analysis (chemistry) Polysulfide |
| Zdroj: | SciELO Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Materials Research v.10 n.2 2007 Materials research (São Carlos. Online) Universidade Federal de São Carlos (UFSCAR) instacron:ABM ABC ABPOL Materials Research, Volume: 10, Issue: 2, Pages: 161-163, Published: JUN 2007 Materials Research, Vol 10, Iss 2, Pp 161-163 (2007) |
| ISSN: | 1516-1439 |
| DOI: | 10.1590/s1516-14392007000200011 |
| Popis: | Made available in DSpace on 2021-07-14T10:47:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2007-06. Added 1 bitstream(s) on 2021-07-14T11:38:28Z : No. of bitstreams: 1 S1516-14392007000200011.pdf: 101669 bytes, checksum: 8b71d41f6a4849a0bb125b8fb210fd80 (MD5) 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. Universidade de São Paulo, Ribeirão Preto School of Dentistry Universidade Estadual Paulista, Araraquara School of Dentistry Universidade Estadual Paulista, Araraquara School of Pharmaceutical Sciences Universidade Estadual Paulista, Araraquara School of Dentistry Universidade Estadual Paulista, Araraquara School of Pharmaceutical Sciences |
| Databáze: | OpenAIRE |
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