They don't do root canals either until you've taken antibiotics (which is weird since antibiotics cannot enter the tubules).
Far as swelling after
extractions this varies widely with the pre-extraction
the teeth. I had a week long swelling after my one and only root canal which I wish I hadn't had done. I only had it done be
cause I had ONE severe stab of pain in that tooth
and wished to avoid it happening again. Now it's loose, 5 years later.