if even after three weeks of root canal treatment and the pain is not relieved then you should show to the dentist as there may be some infection is remaining. your dentist should take an x-ray again to check for infection and either repeat the procedure or give you medicine and reduce the height of the tooth. if the root canal treatment fails then he will advice to extract that tooth. take care. for further doubts consult a dentist online --> <link>
my tooth pain continues even after three weeks of rct. kindly help.