The abscesses that kill typically have pain, high fevers, and other symptoms.
I had one that actually was in my gums not me teeth. My teeth were hurting really badly but it ended up being in my gums. The pain was just radiating. My teeth were actually fine.
I went for about two weeks of pain on that before I took some antibiotics and it went away. After that they of course wanted more appointments. I hadn't been to a dentist in over a decade. I generally don't need to.
I also already decided I'll have a tooth pulled before I get a root canal. That ends up being not particularly healthy to do (root canal) from what I've researched. I had one tooth pulled. Strangely the empty socket that needed to heal and have my gums heal over hurt less than the tooth did before it was pulled.
That's my teeth woes... one pulled tooth, and one abscessed gum and I am 50.
Though I don't eat a lot of sugary things, and I haven't touched alcohol or drugs and such since I was 16 and at that time I'd done so little that I'd been stoned from marijuana maybe 6 times, and I'd never been drunk or had a hangover.
Why mention that? I know many of those things can contribute to teeth problems. Perhaps that is why I haven't had many. I don't know.
Some of my children who haven't done those things either have had far more problems with teeth than I ever have.
It is possible the abscessed gum would have healed itself. After two weeks of pain and a slight fever all I know is after the antibiotics it went away almost immediately.
Anecdotal yes. Yet I also think people are quick to brush aside anecdotal evidence when it can still have relevance. It should not be taken as proof. Yet it can still be considered as potentially relevant.