Usually after a root canal,there can be slight discomfort in the area for a few days to almost a week...if you have taken your post treat ment medications regularly and followed your dentist's instructions, it should be okay in a week...
Next Steps
if the pain dosent subside even after two weeks please meet your dentist..
Health Tips
avoid chewing from the affected side till pain comes down..try warm salt water gargle for a week..