They don't heal, so all your efforts are only to postpone their decay. Uh, no. Your enamel can't be replaced. However, your dentin is regenerated constantly, i

They don't heal, so all your efforts are only to postpone their decay. Uh, no. Your enamel can't be replaced. However, your dentin is regenerated constantly, in the same way that bone is regenerated. People with really good genetics can even over-generate dentin. Not only have I read about this, I know this firsthand, because I have developed "spurs" on the corners of some teeth where the enamel has gotten chipped. Dentin isn't as hard as enamel, but it's still pretty darn hard. Plenty hard enough to chew with.