Davids Hydroxi Fluoride Free Nano Hydroxyapatite Toothpaste for Remineralizing,

Bioactive Sensitive Support - many sensitive toothpastes use Potassium Nitrate (a nerve numbing drug) to temporarily numb the tooth nerves. Davids use Nano Hydroxyapatite (n-HA) to support sensitive teeth by physically blocking (occluding) the passageways (tubules) to the nerves.