10 months ago I was injected with Septocaine for a lower mandibul...

10 months ago I was injected with Septocaine for a lower mandibular nerve block for a root canal in my lower jaw, right side. Since then I've had a terrible paresthesia of my tongue, right side, with burning pain, numbness and tingling, stiffness, and terrible taste sensations 24/7. This drug is dangerous and should be banned IMO. I don't know what I'm going to do... there is no treatment for nerve damage. I contacted Dr. Tony Pogrel at UCSF in California who told me that surgery is not indicated for injectional injuries and that if it doesn't clear up by the third month then the chances of recovery are "very poor". Just great. How the heck did this drug EVER get FDA approval????????