Scientists are regrowing human teeth

Discussion (155 points, 7 months ago, 79 comments) https://news.ycombinator.com/item?id=46438169

Or (41 points, 2 years ago, 23 comments) https://news.ycombinator.com/item?id=40644454

Or (73 points, 8/ years ago, 95 comments) https://news.ycombinator.com/item?id=16432024