Dental Nerve Block: How It Works and What to Expect

A dental nerve block is an injection of local anesthetic near a major nerve trunk to numb all the teeth and tissues supplied by that nerve. The most common dental nerve block is the inferior alveolar nerve block (IANB), which numbs the lower teeth, lower lip, and chin on one side. Nerve blocks are used when a larger area needs to be anesthetized than what a single tooth injection can achieve, particularly for procedures on lower back teeth.

When administered by trained, credentialed providers with appropriate monitoring equipment, dental sedation has an excellent safety record. The risk of serious complications is very low. A pre-sedation health evaluation identifies patients at higher risk so that appropriate precautions can be taken.

Your dental provider will recommend the appropriate sedation level based on your anxiety, the type and duration of the procedure, and your medical history. Mild anxiety may only need nitrous oxide. Moderate anxiety or longer procedures may warrant oral or IV sedation. Severe phobia or extensive work may require general anesthesia.

For nitrous oxide alone, no driver is needed. For oral sedation, IV sedation, and general anesthesia, you must have a responsible adult drive you home and supervise you for the rest of the day.

Costs range from $50 to $200 for nitrous oxide, $150 to $500 for oral sedation, $250 to $1,000 for IV sedation, and $500 to $2,000 or more for general anesthesia. Insurance coverage varies and often depends on medical necessity.

Yes. If dental anxiety prevents you from getting care, sedation is a valid and appropriate option regardless of the procedure complexity. Discuss your concerns openly with your provider. If your current provider does not offer sedation, they can refer you to one who does.