Provided is compositions and methods for treating dental caries in individuals and animals. The compositions may be
zinc compositions of [Zn(NH3)4]F2. Also provided are methods of making inorganic
zinc compounds (e.g., ZnO, Zn(OH)2, or Zn(OH)F) onto the surface of a carious
lesion. The deposition of inorganic
zinc compound (e.g., ZnO, Zn(OH)2, or Zn(OH)F) may occur from
dilution of a Zn2+ / NH3 solution (e.g., an aqueous or
alcohol-based solution) into water (e.g., deionized water). The formation of inorganic zinc compound (e.g., ZnO, Zn(OH)2, or Zn(OH)F) may be instantaneous upon
dilution.