If enamel is as hard as bone how can so many toothpastes realistically claim to restore and protect it?
- Delete, Rewind.XLv 71 month ago
Certain peptides which can be used in gels and some toothpaste can create protein structures on the enamel surface. Calcium ions from salvia accumulates on these structures and mineralize, creating an enamel-like layer.
Enamel itself cannot regrow, but existing enamel can be rehardened or protected using technologies such as described above. It's a simple process really and is not new.
Comparing enamel to bone in your reasoning really has nothing to do with the question or the answer.