I can just guarantee they'll lecture me.
I neglected my teeth as a kid, and it's the one thing I regret and it's still kicking my ass.
One time, I had a bit fall off, went to the dentist to get it fixed, but he decided to fix other minor issues first. That tooth completely collapsed in the wait for him to solve it. He wanted to pull it after that, but I wouldn't let him. Never went to that dentist again.
This tooth is one that had a root canal done about 5 years ago, too, so it being exposed is a bad thing.
Edit: Thankfully, as it was just a filling coming loose, they just gave me a new one in 10 minutes. Job done...£50 ;;