It could be a possible reinfection. .or maybe it has not been done properly in the first time. . Kindly get an X ray done and get it treated by an endodontist. .root canal specialist. .The pain will relieve and the tooth can be saved.
Mam,do visit an endodontist and get the root canal reviewed.Sometimes it can get reinfected.They will take an x-ray and check if any problem exists in the surrounding hard/soft tissues as well.
DR SUMAN MAKAM
Reasonable opinion cannot be provided without having a look at the X-ray to evaluate the status of the root canal treatment that was done 6 months ago..... you might require retreatment for the tooth if the RCT that was done previously was not done properly, or any other local infection or inflammation needs to be checked for and corrected, if found....
Need to have good x-ray n simultaneously need to see adjacent teeth as well... So many times not visible hidden root carries may b present n may cause problems... So have to rule out all possible reasons to find out cause for pain... Visit nearest dentist soon. Regards Dr. Sushma patne
Nothing to worry , pain may be due to so many reasons I cant tell exactly the cause for your pain.asap consult your dentist.Meanwhile you can take Tab Hifenac to have some temporary relief.
I need more info to give proper diagnosis of your problem.
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