Example embodiments of the present invention utilize long term anti-microbial/bacteriostatic compounds that are dispersed throughout a tooth restoration material as a means to reduce or eliminate recurrent decay between the tooth restoration material and tooth structure. More specifically, the present invention utilizes metals, metal oxides, and metal salts, insoluble bacteriostatic organic compounds, soluble bacteriostatic organic compounds, and organometallic compounds as long term anti-microbial/bacteriostatic compounds that are dispersed throughout the tooth restoration material as a means to reduce or eliminate recurrent decay between the tooth restoration material and tooth structure.