Marginal leakage of palladium-enriched amalgam restorations: an in-vitro study

An in-vitro study of marginal leakage around class V restorations, prepared in freshly extracted upper central incisors, tested two types of high copper amalgam: spherical high copper amalgam (Tytin) and spherical high copper amalgam containing palladium (Valiant). No significant statistical difference was noted between the two types of amalgam at the three testing periods. It seemed that the addition of palladium did not improve the marginal leakage.