It usually takes about 2-3 days for the antibiotics to really start being effective. How large is the swelling and does it interfere in any way? If it does, I would consider going to the ER to switch antibiotics or drain the swelling. If its a minor swelling of just the gum area with no problems of any other sort, I would give it another day to see if it improves.
Great. So whats the next step? Probably a re-treatment of the root canal I assume.
you were right.it start swelling down after 3 days.thank you