After a dental procedure involving local anesthesia, numbness in the face is a common temporary side effect. The duration of this numbness can vary depending on the type of anesthetic used, the location of the injection, and individual factors. Understanding how long the numbness lasts can help patients plan their activities and manage any discomfort.
The numbness typically starts to subside within a few hours after the injection. For most patients, it completely resolves within 4 to 8 hours. However, in some cases, it may take up to 12 hours or longer for the feeling to return fully. Factors that can influence the duration of numbness include the concentration and volume of anesthetic used, as well as the patient's metabolism and circulation.
