Objective:This study evaluated the fluoride release of four dental restorative
materials for a period of 28 days.
Materials And Methods:A total of 10 specimens (4 * 2 * 2)mm3 for each of the four
materials were prepared following manufacturer’s in
structions and immersed
independently in 2 ml of distilled water which was changed every period for all the
specimens.
Results:The results demonstrated that the glass ionomer cements (Fuji IX GP and
VivaglassCem) release high fluoride compared with the compomer and composite resin,
but rapidly decreased after the third day and continued this releasing for a period of 28
days , also showed low fluoride release of composite resin and lacking entirely with the
passage of time.
Conclusions:The fluoride released by the glass ionomer cements (GICs) was found
to be highest during the first 24 h and decreased significantly over the 1st week with lower
levels obtained on the 28th day, thus demonstrating the phenomenon of “initial burst”.
The composite resin and compomer used in this study did not show this “initial
burst”.
