Ace the 2026 ASPEN Dental Assisting Exam – Brighten Your Career Smile Today!

Local anesthesia is the loss of pain sensation in a defined area while the person remains awake. It works by temporarily blocking nerve signals in that region, so pain signals from the treated site don’t reach the brain during the procedure. You can still feel touch or pressure in that area, but pain is suppressed. This differs from analgesia, which reduces pain perception but doesn’t necessarily block all sensory input or numb a specific area. Sedation relaxes or drowses the patient and can alter awareness, but it doesn’t selectively eliminate pain signals in one spot. General anesthesia makes the person unconscious. In dentistry, local anesthesia is used to numb a tooth or surrounding tissues while the patient stays conscious and able to respond.