Secret to renewed teeth? Lasers show gleam of hope

What if a cavity could fill itself, a broken tooth regrow? That's the promise of work published today in the journal Science Translational Medicine.

By shining light from a low-powered laser – about the brightness of a sunlit day – researchers were able to turn on a natural healing program and regrow dentin, the material inside a tooth. So far, they can only do this in rodents, but they could receive approval to test it in people within a year.

[link to www.usatoday.com]