.If you have an abscess below the molar, the abscess must be treated first before re-treating the nerve and cleaning the tooth canals. Dental infection and contamination of the dental roots usually lead to the formation of an abscess in the gums or jaw, and the abscess can cause severe pain, swelling and redness.
As for the re-treatment of the nerve, it requires cleaning the tooth canals well to remove any remaining nervous tissue or bacteria remaining in the dental root. Special sterilization materials can be used to deeply clean the canals and then fill the root with a suitable material to prevent re-infection.
The nerve re-treatment and tooth canal cleaning are usually performed in several sessions, and the number of sessions depends on the condition of the tooth and its complexity. After the nerve re-treatment and cleaning of the tooth canals, the tooth must be monitored periodically to ensure that symptoms or infection do not return.
It is important to note that while root canal re-treatment can be very successful in many cases, it can be complex and take longer than the original treatment, and may require additional procedures to achieve a full recovery. Therefore, you should consult a specialist dentist to determine the most appropriate treatment plan for your condition.