If there is a broken elephant within the dental root canal, it must be removed before the nerve can be re-treated. Usually, special tools are used to remove the fractured elephant from the dental root canal, and this may require delicate surgical procedures to remove the elephant without damaging other normal tissues.
After the fractured elephant is removed, nerve regeneration can be performed normally. This is done by deeply cleaning the root canals and removing 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.
It is important to note that re-treatment of the nerve and removal of the fractured elephant can be very successful in many cases, however 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.