Can your mouth stay permanently numb from the dentist?

Permanent numbness around the mouth from dental procedures is uncommon. However, temporary numbness following a dental procedure, particularly involving local anaesthesia, is normal. The duration of numbness varies depending on the type of anaesthetic used and individual factors.

Local anaesthesia temporarily blocks nerve signals, leading to a loss of sensation in a specific area. The numbness typically subsides within a few hours as the anaesthetic wears off. Sometimes, it can last for up to half a day.

However, in rare cases, prolonged or permanent numbness can occur due to nerve damage. This is more common with certain dental procedures, such as root canal treatments or wisdom teeth removal, which require injections near sensitive nerves. Nerve damage can result from direct injury, inflammation, or scar tissue formation during the procedure.

Factors that increase the risk of permanent numbness include:

Advanced age: Older individuals have a higher risk of nerve damage due to age-related changes in nerve structure and function.

Underlying health conditions: Certain medical conditions, such as diabetes, multiple sclerosis, and autoimmune diseases, can increase the risk of nerve damage.

Smoking: Smoking impairs blood circulation and oxygen supply to tissues, including nerves, making them more susceptible to damage.

If you experience numbness that persists for several days or weeks after a dental procedure, it's essential to consult your dentist immediately. They can evaluate your condition, determine the cause of the numbness, and recommend appropriate treatment options.