Please help! what is the cure/treatment for nerve damage caused by oral surgery?

Paresthesia: Depending upon the individual circumstances, it may require antibiotics, anti-inflammatory medication, further surgery, time for the body to repair and recover or a combination of these. Your own oral surgeon can give you the best advice. See a second or even third oral surgeon for second opinions if necessary. Most patients with paresthesia eventually recover full feeling, but not all.

Dental paresthesia: Most cases of dental paresthesia will spontaneously resolve within days, weeks, or months. Those cases that last beyond 6 to 9 months are considered permanent. The sooner rather than later for a better outcome. Best of luck!