The subreddit is called r/the10thdentist, under the assumption that there is always 1 dentist out of 10 who doesn't recommend the toothpaste.
Warning for transphobia in one of the top posts of all time, but not as bad as you'd think; and also a warning that this sub will make you hate a bunch of dudes for eating ramen with ketchup or some shit. it makes you feel insane.