I had two crowns prepped almost 3 weeks ago. Neither the upper nor the lower jaw ever went completely numb, especially the lower where I never lost sensatiton in my lip or tongue. I was given multiple injections (at least 8) using at least 6 carpules of anesthetic. When the anesthetic wore off the pain was horrible in both sites. It is so bad I am taking 800 mg ibuprophen every 4 hours and it just barely kills some of the pain. I am taking vicoden at night to sleep otherwise I am up with pain every 3 hours if i just take regular OTC NSAIDS. I am also taking Cipro. Nothing is helping. The dentist is putting in the permanent crowns in a few days with a temporary cement to see if one of the teeth may need a root canal. Can anyone advise me how to lessen the pain? It is fierce and I am afraid the dentist permanently damaged my nerves.