Hello mam...   The pain in that tooth may be due to re infection of that teeth....your failure to put cap In that teeth also causes infection of the root canal treated tooth....X ray us to be taken to check for any reinfection.if it is so then you need to go for re root canal treatment to eliminate the infection followed by capping of that concerned teeth

You need a dental checkup to rectify by proper diagnosis. Yes a root canal can be performed again.... Provided it's favourable Procedure and treatment can be advised only after checking thoroughly

Yes, Root canal can be performed again if the tooth structure is sound and able to bear the masticatory forces. It is better to consult the dentist to examine the tooth properly to rule out the problem. Regards, Dr. Sandhya Lochav RS Dental Clinic

Hi First visit your dentist and do with a X-ray .If the pain in on root canal treated teeth then it it should be diagnosed whether re root canal is possible or not . Take Tablet Ketoral DT for immediate pain relief .