Thanks for sharing your concern.
A successful root canal
will never cause pain,because there is no nerve
left in the tooth to cause pain.
The surrounding structure might cause mild irritation for two to three days but not an actual pain.
If you are experiencing constant pain in the RC treated tooth,then you must visit your dentist
and check clinically if any canal is left unexplored?
Also the swelling indicates periapical infection.
An x ray
is required to see the periapical pathology.The abscess
which has developed in your cheek, should be further drained and antibiotic coverage should be given.
I would also suggest you to re check about the duration of antibiotic,as the course you have mentioned is very long.
Generally it is given for 3 to 5 days.
Hope this information helps you.
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