Ja. Williams et al., SILVER AND FLUORIDE-ION RELEASE FROM METAL-REINFORCED GLASS-IONOMER FILING MATERIALS, Journal of oral rehabilitation, 24(5), 1997, pp. 369-375
This study was undertaken to examine whether a relationship exists bet
ween the composition of metal-containing glass-ionomer cements and ion
release from these materials. Conflicting data on silver release from
this type of material has been reported and it was felt that further
investigation was desirable in view of the increasing use of these mat
erials. In this study, the release of ions, particularly of silver and
fluoride, into deionized water and artificial saliva was measured for
up to one year. Low levels of silver and copper ions were found in bo
th media. The amounts released from alloy-containing materials were de
pendent on the amount of alloy present; lesser amounts were leached fr
om cermets. Fluoride ion release was less material-dependent but still
lowest for cermets. The use of artificial saliva reduced ion release
as did increasing the maturation time prior to immersion in either liq
uid.