Methods for treating and/or preventing periodontal disease with arginine silicate are disclosed. Methods may include the steps of identifying an individual in need of treatment for, or in need of prevention of, periodontal disease and administering an effective amount of an arginine-silicate complex to said individual. Arginine silicate may also be used to ameliorate one or more symptoms of periodontal disease. In some aspects, arginine silicate may be used to restore gum health and/or stop or reverse recession of the gums and/or the loss of gum tissue in the oral cavity.