الفهرس 
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Abstract
1. To measure and compare the rate of fluoride release from two
different types of fluoride releasing Glass-ionomer restoratives at
different time intervals namely; one week, and one month .
2. To measure and compare the amount of fluoride uptake by dentin
at the same selected time intervals.
3. To investigate whether leaching out of fluoride from fluoridereleasing
ionomers could affect their micro-shear bond strength to
dentin at the aforementioned time intervals