It can vary: How long the numbness lasts can depend on whether or not any infection is present, postoperative swelling, as well as what type of local anesthetic was used. In the lower jaw, we are always concerned about the close proximity of the roots of the wisdom teeth to the nerve that supplies sensations to the lower jaw. A risk of nerve involvement in the lower jaw may prolong the numbness.
Answered 6/4/2013
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