Document Detail


Lead and cadmium in human teeth from Jordan by atomic absorption spectrometry: Some factors influencing their concentrations.
MedLine Citation:
PMID:  16740296     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to measure the concentrations of lead (Pb) and cadmium (Cd) in human teeth and to investigate the affecting factors. Teeth samples (n = 268) were collected from people living in different cities in Jordan including Amman, Zarqa, Al-Mafraq and Irbid and analyzed for Pb and Cd using atomic absorption spectrometry (AAS). A questionnaire was used to gather information on each person, such as age, sex, place where the patient lives, smoking, presence of amalgam fillings inside the mouth, and whether the patient uses toothpaste or not. The mean concentrations of Pb and Cd were 28.91 microg/g and 0.44 microg/g, respectively. The results indicate that there is a clear relation between Pb and Cd concentrations and the presence of amalgam fillings, smoking, and place of living. Pb was sex-dependent, whereas Cd was not. Our results show that Pb and Cd concentrations in samples obtained from Al-Mafraq and Irbid are higher than those obtained from Amman and Zarqa. Pb was highest in Mafraq, whereas Cd was highest in Irbid. The Pb and Cd concentrations in teeth from smokers (means: Pb = 31.89 microg/g, Cd = 0.49 microg/g) were significantly higher than those from nonsmokers (means: Pb = 24.07 microg/g, Cd = 0.37 microg/g). Pb and Cd concentrations in teeth of patients with amalgam fillings (means: Pb = 31.02 microg/g and Cd = 0.52 microg/g) were significantly higher than those from patients without amalgam fillings (means: Pb = 26.87 microg/g and Cd = 0.41 microg/g). Our results show that brushing the teeth daily with toothpaste does not significantly decrease the concentration of both Pb and Cd. The mean concentrations of Pb and Cd do not vary significantly between the ages 20-30, 31-40, and 41-50, but both increased rapidly at age 51-60.
Authors:
A Alomary; I F Al-Momani; A M Massadeh
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-06-05
Journal Detail:
Title:  The Science of the total environment     Volume:  369     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  2006 Oct 
Date Detail:
Created Date:  2006-09-04     Completed Date:  2006-11-27     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  69-75     Citation Subset:  IM    
Affiliation:
Department of Chemistry, Yarmouk University, Irbid, Jordan. ahmedalomary1000@hotmail.com
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Aged
Cadmium / analysis*
Dental Amalgam
Environmental Monitoring
Environmental Pollutants / analysis*
Female
Humans
Jordan
Lead / analysis*
Male
Middle Aged
Smoking
Spectrophotometry, Atomic
Tooth / chemistry*
Chemical
Reg. No./Substance:
0/Environmental Pollutants; 7439-92-1/Lead; 7440-43-9/Cadmium; 8049-85-2/Dental Amalgam

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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