Infiltrant comprises crosslinking monomers and acid group-containing monomers (0.05-20 wt.%), where the infiltrate has a penetration coefficient of greater than 50 cm/second. An independent claim is included for a kit for preparing the infiltrant, comprising a first component with monomer and chemically activatable initiator and a second component with activators, where the kit additionally comprises etching and drying agents. ACTIVITY : Antibacterial. MECHANISM OF ACTION : None given.