I have terrible luck with dental stuff.
Got these two nasty cavities that I failed to take care of until it was already too late. Still have them (I think it's been at least 10 years now), and since my family is running on pauper-levels of insurance/income, I'm more or less doomed to some type of gum disease or some other issue concerning them. I take care of my teeth just fine now, but the damage has already been done, and nothing short of a complete removal will help, because a filling is no longer possible with how badly the teeth in question have decayed.
Also got the **** luck of both cavities being molars on either side of my mouth, so eating and drinking always hurts regardless. And when something gets stuck in the holes? Sweet mother of god the pain is immeasurable.
I also have an overbite, and need braces to fix them, and an accident when I was younger resulted in a root canal in which the dentist screwed up, resulting in me losing one of my healthy adult front teeth.