hello there ,
After extraction of the teeth under local anesthesia
usually it takes 4 to 5 hours or sometimes more than that for the sensation to return back to normal so dont worry about it .
you may feel heavy in the jaws , nausea
sensation ,numbess in the lips , gums and tongue which is temporary and will be normal with time .
sometimes peripheral nerve
fibres may damage during the extraction and they may take little longer to heal. these nerve fibres regenerate with time so dont worry.
follow the post extraction instructions , regular rinsing with lukewarm saline water or antiseptic mouthwash helps in preventing infection and fastens the healing process.
i hope this helps ,