The addition of 7 wt% zirconium oxide nanoparticles significantly improved hardness levels, flexural strength, and fracture toughness of the heat cured, these advantages are caused by the tribological behavior of the addition of nano-zirconium oxide. for more details can read;
Article The implications and applications of nanotechnology in denti...
@ Moaid, I think it is Bionic dental pulp which is a potential material for root canal therapy, helps to increase life-span of teeth like healthy pulp.