How long does dental numbing last after a filling? Typically, numbness wears off within 1–3 hours, but it can sometimes linger longer. It depends on the type of anesthetic used and your body’s response. If you’re uncomfortable, there are ways on how to make numbness go away after dental procedures. Try gentle massage near the area, stay active, or apply a warm compress. Avoid biting your cheek or tongue while numb. If numbness persists beyond a few hours, contact your dentist. Understanding your recovery helps you feel more in control after any dental work.