An innovative gel that forms a layer over teeth and then recruits calcium and phosphate ions from saliva to build new enamel has the potential to change dental treatment. To date, we don't have any way to regenerate the tough outer layer of enamel on our teeth as it erodes with age.
With enamel regrowing constantly after the smallest scratch, cavities cannot get to where they form.
This hokum story is promising no more cavities ever.