Killing the nerve and then pumping the nerve is usually not painful, but if the nerve is pumped without completely killing the nerve, there may be some pain.
1. General: After the nerve is infected, the pulp chamber needs to be completely uncovered to fully expose the pulp chamber, and then an arsenic-free inactivator is placed inside the pulp chamber to kill the nerve, and the medication usually needs to be left in place for 7 to 10 days to basically kill the nerve. Upon re-visit, the doctor will use a pulpotomizing needle to make sure that the nerve has been completely inactivated and then the nerve will be extracted, so it is usually painless.
2. Special cases: If the nerve cannot be completely killed due to incomplete exposure of the pulp chamber, insufficient amount of medication, complex root canal morphology, etc., it is necessary to fully uncover the top of the pulp chamber and place enough inactivating agent to ensure that the nerve is killed and to prevent severe pain in the process of extracting the nerve.
After killing the nerve and then pumping the nerve, generally will not appear obvious pain, but the specific situation needs to be determined according to the degree of nerve killing, it is recommended that the best to the professional formal dental hospital treatment.