BioMinF toothpaste is the latest development in those with sensitive teeth, or those just want to prevent further decay.
Teeth become sensitive when tubules open in the teeth, causing pain whenever hot or cold food is eaten. In the past teeth were desensitised by toothpaste that blocked these tubules. But the teeth were never repaired, just sealed with an artificial additive.
BioMinF toothpaste removes tooth sensitivity by rebuilding tooth damage, providing the damage is only moderate. It steadily releases calcium, phosphate and fluoride ions over an 8-12 hour period. This slow release is the key development. These same minerals in the past, particularity fluoride, were already been known to be beneficial for teeth; problems occurred as they needed to be applied to the teeth for substantial periods of time. Previous toothpastes contained the minerals, but lost effectiveness in less than an hour.
The steady application of the minerals helps teeth remineralize. If the outer surface of the tooth can remineralize faster than it is being demineralised any light damage to the tooth enamel can be reversed. Fluoride in drinking water has some benefits for this process, but the ingestion of the fluoride is controversial. And any drinking water only has minimal time in contact with the teeth. By contrast the newer BioMinF contains several remineralizing agents, and when used at night it is able to remain in contact with the teeth until morning.
A version of BioMinf is being developed that does not contain fluoride. The other active remineralisation agents should work sufficiently to achieve the same result.