Numbness after a dental appointment is a common side effect of local anesthesia. It typically goes away within a few hours, but there are a few things you can do to help speed up the process.
The most important thing is to avoid biting or chewing on the numb area. This can damage the nerves and prolong the numbness. You should also avoid hot or cold foods and drinks, as these can irritate the nerves and make the numbness worse.