The idea in offering toothpaste with Nano Medical Hydroxyapatite as the main ingredient is to support a naturally occurring function in the mouth, the restorative role of saliva. In fact, enamel is made up of closely packed hydroxyapatite rods, separated by tiny channels about 50 nanometers wide. As demineralization occurs, the biofilm dissolves these hydroxyapatite rods. Saliva plays an important role by providing calcium and phosphate, the building block of hydroxyapatite. It neutralizes acids caused by plaque bacteria and restores lost mineral, so that the enamel becomes remineralize. If conditions such as excess biofilm, inadequate saliva flow or heavy intake of acidic food are present, sufficient mineral is necessary to protect against caries and tooth sensitivity. Nano Medical Hydroxyapatite supplements the salivary mineral and reverses incipient caries and white spot lesions.