Hello, visit a dentist and get an X-ray done, if there is an infection depending upon the severity you need to go for Re-RCT or extraction. Let the dentist take the right decision.

Re infection happens rarely.better go for root canal treatment as soon as possible.

Your tooth is infected and needs immediate attention. The root canal needs to be repeated. You will need to see an Endodontist ( root canal specialist) who works with a dental microscope. Treatment will be painless and predictable. Please look up my profile on practo ( Dr. Shail Jaggi) .Please make an appointment and come in for a consultation . Regards Dr. Jaggi

Hi Sometimes reinfection occurs in root canal treated tooth...it may be because of either improperly done RCT or residual infection or recurring infection...since the infection is chronic there are chances of intra oral or extra oral swelling...in such cases you should not neglect...treatment protocol is always first non surgical re rct if still infection persists surgical treatment if at all nothing works lastly extraction of the tooth... Don't worry nowadays rerct is becomes more predictable because of better understanding of failure reasons through CBCT, treatment modality with intracanal medicaments, intracanal antibiotic pastes etc... Kindly visit Endodontist and get the necessary investigations done as early as possible before infection gets worsen

Hello.. It's very unfortunate that u hav got infected the same teeth again.. you have to undergo reRCT. Then rule out any other problems which might cause infection in future..

Hello, Mam,you need to visit an Endodontist and get the treatment started. Regards Dr Sumanmakam

Hi , Please get a xray done & get a repeat root canal if required done by Endodontist (root canal specialist) followed by cap.For the lump below the ear & viral fever you can visit your physician. Please do not afraid to visit a dentist as because of advancements in dentistry you will be comfortable.