Journal of Dental Research, Vol 58, 1771-1779, Copyright © 1979 by International & American Associations for Dental Research Online Journals
The distribution of metallic constituents in dentin subjected to iontophoresis
T. Fujimasa, H. Matsumoto and K. Yasuda
The concentration gradient and distribution of a metallic constituent in
dentin which has been subjected to iontophoresis, using a water solution of
silver diamine hydroxide and zinc chloride, were analyzed by means of EPMA
as a basic study for pulp capping or cavity lining. Line scanning analyses
parallel to the tooth axis showed that the transportation distance of
metallic ions depends strongly on potential, period of iontophoresis and
structural differences in dentin. Although metallic silver or zinc was
found in the dentinal tubules, there was one case in which no metal was
observed. The change in the distribution can be described as power
function.
