Abstract: The present invention provides a calcified tissue facing preparation characterized by having a polymerizable resin, and an antimicrobial agent of the formula: where R1 is a hydrocarbon radical having between 1 and 16 carbon atoms, n is an integer between 1 and 8 inclusive and X is a halogen atom selected from fluorine, chlorine or bromine. It is appreciated that R1 includes unsaturated hydrocarbon radicals, as well as heteroatom containing radicals. Preferably, the molecule of Formula (I) is associated with an adduct species. At least one of glutaraldehyde or a chelating agent are added to enhance the preparation characteristics.