The purpose of this study was to evaluate

quantitatively the effectiveness of adhesive dentin

bonding systems in decreasing microleakage at the

tooth-amalgam restoration interface. The results

indicated that microleakage was significantly reduced

when Amalgambond Plus or All-Bond 2

was used as liners in comparison to either

Copalite varnish or no liner under amalgam restorations.

No significant difference was found between

the two dentin bonding systems at all time

periods studied.