Strong teeth: Nanostructures under stress make teeth crack resistant http://bit.ly/1L7u4D3 pic.twitter.com/yJC5qknm5p
6:00 AM - 14 Jun 2015
0 replies
9 retweets
6 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.