We will take every measure to ensure that your procedure is comfortable and painless. We will inject a small amount of anesthetic to gently numb a concentrated area of your mouth. For most patients, the feeling of numbness usually subsides after 2-3 hours. Your tooth may feel sensitive for two to seven days after treatment. Your body needs time to repair the damage that the original irritant caused. This is normally relieved with over-the-counter medications such as Advil. We will provide you with thorough instructions for managing any discomfort. Your tooth may continue to feel slightly different than your other teeth for some time after your endodontic treatment is completed. However, if you have severe pain or pressure, or pain that lasts more than a few days, please do not hesitate to contact our office.