From the end of the article: "That said, regenerating a tooth from within would only be useful in a relatively small number of cases. Most cavities would still need to be drilled and filled."
Still cool, I guess.
Still cool, I guess.
I'd also hope it'll be cheap. Getting a tooth drilled requires all sorts of infrastructure, and hours of time on the part of a trained PhD. Slapping some goop on? All you have to do is make the goop cheaper, and costs plummet.