200">Nanoparticle cytotoxicity of interest for future oral healthcare formulations.
205">Nanoparticles characterised using SEM and DLS, in the absence of stabilisers.
210">H376 oral epithelial cell model was used for the first time in preliminary screening.
215">Hydroxyapatite, SiO2 and TiO2 nanoparticles were well tolerated in the model.
220">ZnO significantly more cytotoxic than other materials, but were not nano-dependent.