Influence of a new experimental bonding agent on marginal seal of Class V restorations: an in-vitro study.

The performance of a new experimental dentin bonding agent (A.R.T. Bond) was evaluated in vitro. Its influence on the marginal seal of mixed class V restorations made on freshly extracted third molars, using 7 different restoration techniques was studied. When using the new dentin bonding agent, the results of the dye penetration test revealed the least dentinal leakage with the direct inlay technique. Dye penetration scores of bulk and incrementally placed restorations were higher, but not significantly different from the direct inlay. The absence of the dentin bonding agent in incrementally placed restorations resulted in significantly higher leakage values.