Can antibiotics heal an abscessed tooth enough that a root canal is unnecessary?

Hey there buddy,Ive been doing some research on this matter due to the fact that Ive had 3 due to bad molars that should have been pulled years ago. First, Ive read that sometimes the doctor will take a knife and cut you like they did to "rocky" for his eye. It basically lets the blood that's causing the swelling and most of the pus/infection to drain out. After that u should feel better and notice the swelling to go down in a few hours, say 6+. But as far as i can tell it wont because the cavity is causing the abscess the root of your tooth is probably already dead just spreading the infection. Ive also heard that they can cause heart problems and breathing problems if it speads to those areas. I guess it all depends on how long you have had it and done nothing about it. Ive had mine for over 5 years but the last 2 years have been hell. Also ive heard that if your tooth is that bad but can be saved, most ppl end up getting it pulled 5-10 years anyway because it rotted out so you might be better to just have them pull it. I know steak and tuff meats will be off the menu but theres always mac and cheese and noodles. Besides when we all get old i bet we will have dentures too most older folks have them and i know our dental habits are worse than theirs so go get all your bad teeth pulled, drop the 2-4k for all the work and get a head start on your new chompers.... don't end up like me and have no choice left but to get dentures, Im looking at 12 teeth pulled. 3 bottom molers on both sides, my 2 beaver teeth, the 2 next to the beaver teeth and then i gotta get 2 teeth laser cut out because they broke at the gum line.... theres nothing to grab on to to pull them out...THATS BAD!!!!!