Effects of the XR-bonding system on in vitro caries.

This study evaluated the effects of a dentin bonding system and glass ionomer liner on in vitro recurrent caries around resin composite restorations in dentin. The dentin adhesive significantly reduced the size of recurrent lesions. The glass ionomer liner, applied either to the axial wall or to the cavosurface margin, provided an even greater cariostatic effect. Both the adhesive and the liner reduced the size of cavity wall lesions. In addition, zones of caries inhibition were present around 75% of restorations lined with glass ionomer cement.