title: Zinc and strontium analyses by energy dispersive X-ray fluorescence in human permanent teeth.
abstract: The zinc and strontium content of enamel and dentine from humans aged 9-64 yr was analysed, after systematic sampling, by X-ray fluorescence. Relatively high levels of zinc were found in both hard tissues but there was no significant increase with age. Zinc content decreased significantly from outer to inner enamel and increased significantly again from peripheral to pulpal coronal and root dentine. The strontium content was significantly higher in enamel than in dentine; there was a significant increase with age in enamel but not in dentine. However, outer and inner enamel showed no significant difference in strontium content. Almost similar amounts of strontium were found in coronal and root dentine.
authors.affiliation: Centre de Recherches (Unité INSERM, U 157, URA CNRS 588), Faculté de Chirurgie Dentaire, Université Louis Pasteur, Strasbourg, France.
authors.forename: R M
authors.initials: RM
authors.lastname: Frank
authors.forename: M L
authors.initials: ML
authors.lastname: Sargentini-Maier
authors.forename: J C
authors.initials: JC
authors.lastname: Turlot
authors.forename: M J
authors.initials: MJ
authors.lastname: Leroy
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000704:Analysis of Variance; D002648:Child; D003743:Dental Enamel / Q000032:analysis*; D003804:Dentin / Q000032:analysis*; D005602:France; D006801:Humans; D008875:Middle Aged; D013052:Spectrometry, X-Ray Emission; D013324:Strontium / Q000032:analysis*; D014505:Urban Population; D015032:Zinc / Q000032:analysis*
chemical_list: D015032:Zinc; D013324:Strontium