Discussion (669 points, 4 days ago, 256 comments) https://news.ycombinator.com/item?id=45826995
My Favorite comment is a reply by PaulKeeble: (parent comment https://news.ycombinator.com/item?id=45827075 )
> Just 7% of studies that do a preliminary study on humans actually get through phase 3 and get approved for use. This is before even the preliminary point, its a tooth (or even a tooth analogue) in a petri dish. No idea if the material will be safe in a human mouth yet. [...]
I keep reading that for couple months already. Wake me up when the dentist around the corner offers that.
[Dentist waiting room]
Me: [chanting] teeth, teeth-
Other patients: teeth, TEETH
Secretary: [pounding her clipboard] TEETH, TEETH, TEETH!