Generally the trauma from the dental surgery can cause injury to the
majorMajor tears
Major-gesic nerve of the jaw resulting in numbness of the jaw. Her numbness hasn't improved in the month since the extractions? Did your surgeon recommend any medications or anti-inflammatories?
Generally there shouldn't be any throbbing afterwards if the area is healing well. It may have to do with the injury to the nerve.
I would recommend going back if the symptoms haven't improved.