Does it hurt to kill nerves?

If there is a tooth decay in the mouth, the tooth decay is deep, and the tooth nerve is exposed when the caries is removed. In this case, it is not possible to directly fill the tooth, but to do nerve killing treatment first. After nerve killing treatment, the tooth can be filled again. If the tooth decay is deep, it has already caused pulpitis, such as acute pulpitis, such as chronic pulpitis. In this case, it is not possible to directly fill the tooth. It is necessary to do the treatment of the tooth nerve first. After nerve killing treatment, the tooth can be filled. If you feel pain, you can go back to see the doctor and take out the deactivator. The pain can be relieved by opening the pulp with cp. After the pulp is inactivated, the pulp will be taken out again. There is no pain when it is taken out. There is no pain when the root canal is changed and the root canal is filled. In general, the killer nerve has no obvious pain, occasionally shows pain, can be revisited, can be treated, and relieves pain.