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Fluoride uptake by cavity walls following application of Duraphat® around amalgam restorations
Author(s) -
BJØRGTVEIT ANNE
Publication year - 1980
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.1980.tb00433.x
Subject(s) - amalgam (chemistry) , fluoride , varnish , dentistry , fluoride varnish , oral cavity , chemistry , in vivo , electron probe microanalysis , materials science , nuclear chemistry , mineralogy , composite material , inorganic chemistry , medicine , biology , electrode , electron microprobe , coating , microbiology and biotechnology
Summary This study aimed to assess possible fluoride uptake by cavity walls following a single application of Duraphat® around class V or I amalgam restorations which were inserted in seventeen human premolars in vitro and in vivo . Six cavities were lined with one layer of Copalite® insertion of the restorations. After a week in vivo and 12–24 h in vitro , 200–300 μm thick longitudinal sections passing through the cavities were prepared. By electron probe microanalysis F concentrations ranging from 2000 to 6000 ppm were measured near the surface of the cavity walls. Copalite seemed to inhibit F uptake. The study indicates that F ions released from the Duraphat varnish have been taken up by the cavity walls. Such uptake may influence development of secondary caries (wall lesions) in connection with amalgam restorations.