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.
its possible now but the world is pretty fucked. we can already reduce aging too and reverse it, we have cancer treatments that have near 100 percent success rates for many cancers, and many of these developments were only in recent years but when you watch how much gets done without making it into actual hospitals because of shitass companies and practices it makes you feel a little concerned if any of that will really have an impact, especially when everything is already burning anyway…