A
nanoparticle composition for oral care includes at least one of a first set of spherical nanoparticles or a second set of
coral shaped nanoparticles, and a stabilizing agent. The
nanoparticle composition is added to a carrier suitable for application to an
oral cavity, including to teeth and surrounding oral tissues. The
nanoparticle composition can be a stable, 1-part composition. The nanoparticle composition is configured to control the pH of the microenvironment to which it is applied, thereby preventing and / or treating a variety of oral conditions. The nanoparticle composition can be provided as a concentrated nanoparticle additive addable to a mouthwash,
mouth rinse,
dentifrice, mouth spray, oral gel, denture cleaning solution, or other carrier suitable for
oral application. The oral care composition is not a
nasal spray.