Original title: "End of fillings in sight as scientists find Alzheimer's drug makes teeth grow back", but that is even more misleading. The drug doesn't make l

Original title: "End of fillings in sight as scientists find Alzheimer's drug makes teeth grow back", but that is even more misleading. The drug doesn't make lost teeth "grow back", but it can be used topically to prompt dentin regrowth/recovery in a decayed tooth, which is still pretty cool.