An emergency appointment can be made if you are in severe tooth pain and need to have treatment as soon as possible . The doctor can perform a procedure which opens the tooth to remove the nerve, and will try to finish the root canal procedure if that is not possible, then packs the tooth with medication to kill the infection. There will be a temporary filling put in the tooth when the treatment is finished. This procedure significantly reduces pain and starts the healing process. If needed an appointment will be made for you to return to finish the root canal.