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.
beaver have a different composition, its made of iron compounds, i dont think human mouths are adapted to have iron teeth, it might damage your other teeth, because iron is much harder than calcium hydroxyapatite.