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Zn concentration of human subgingival calculus related to F, Mg and Cu contents
Author(s) -
KNUUTTILA MATTI,
LAPPALAINEN ROLF,
LAMMI SEPPO
Publication year - 1981
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1981.tb01701.x
Subject(s) - atomic absorption spectroscopy , calculus (dental) , linear regression , content (measure theory) , chemistry , mathematics , analytical chemistry (journal) , dentistry , chromatography , statistics , physics , mathematical analysis , medicine , quantum mechanics
– F and Zn content of human subgingival calculus was studied with respect to its Ca, Mg, Cu, Fe and Pb contents. The material consisted of 60 subgingival calculus samples from 60 persons. The element concentrations were determined with an atomic absorption spectrophotometer except for the F content, which was measured with an ion‐selective electrode. The data were analyzed using the multiple linear regression analysis. 24% of F content was explained by Zn and none of the other elements were significantly related to F content. Altogether 55.4% of Zn content was accounted for‐in all variables. The selected variables after the removal of nonsignificant ones explained 54.8%. The most important variable was F (24.0%) and the explanation power of Cu was 18.3% and of Mg 12.5%. The regression coefficients of these variables were positive. The mean ±s.d. concentration of Fin the samples was 221.2±174.1 μ/g and of Zn 498.6±499.1 μ/g, respectively.